IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-01-10 DOI: 10.1016/j.carbon.2026.121256

Jing Yu, Weizhi Lin, Hao Cheng, Feng Chen

Graphene films (GFs) have been widely used in thermal management for electronic devices due to their exceptional thermal conductivity. The ever-increasing power density has placed new demands on the heat flux carrying capacity of GFs, leading to efforts to produce thicker GFs. Nevertheless, increasing the thickness of GFs typically results in a rapid decline in thermal conductivity. Currently, commercial graphene thick films (GTFs) are primarily fabricated by bonding multiple graphene oxide films or GFs to increase thickness, but they usually suffer from poor structural stability and reduced thermal conductivity. Herein, a novel GTFs assembly strategy is proposed to achieve seamless and robust bonding of nano-silver to GFs via evaporative deposition and hot-pressing. The thickness of the composited graphene-silver thick film (GTF-Ag) is 200 μm, with an in-plane thermal conductivity of 1630 W m⁻¹ K⁻¹. Furthermore, GTF-Ag maintains stable structure and thermal conductivity after undergoing temperature treatment from −200 °C to 400 °C and 1200 thermal shock cycles. This work overcomes the traditional trade-off between thickness and thermal conductivity of GTFs, setting a new record for the thermal conductivity of GTFs and providing an efficient and reliable solution for thermal management in high-power devices and extreme environments.

石墨烯薄膜由于其优异的导热性，在电子器件的热管理中得到了广泛的应用。随着功率密度的不断提高，对热流通量承载能力提出了新的要求，导致人们努力生产更厚的热流通量。然而，增加GFs的厚度通常会导致导热系数的迅速下降。目前，商用石墨烯厚膜（GTFs）主要是通过粘合多个氧化石墨烯膜或GFs来增加厚度，但它们通常存在结构稳定性差和导热性降低的问题。本文提出了一种新的gtf组装策略，通过蒸发沉积和热压的方法实现纳米银与gtf的无缝粘合。合成的石墨烯-银厚膜（GTF-Ag）厚度为200 μm，面内导热系数为1630 W m−1 K−1。此外，GTF-Ag经过−200°C至400°C的温度处理和1200次热冲击循环后，仍保持稳定的结构和导热性。这项工作克服了传统gtf厚度和导热系数之间的权衡，创造了gtf导热系数的新记录，为大功率器件和极端环境中的热管理提供了高效可靠的解决方案。

{"title":"Graphene thick films with ultra-high thermal conductivity and robust stability via seamless nano-silver bonding strategy for extreme thermal management","authors":"Jing Yu, Weizhi Lin, Hao Cheng, Feng Chen","doi":"10.1016/j.carbon.2026.121256","DOIUrl":"10.1016/j.carbon.2026.121256","url":null,"abstract":"<div><div>Graphene films (GFs) have been widely used in thermal management for electronic devices due to their exceptional thermal conductivity. The ever-increasing power density has placed new demands on the heat flux carrying capacity of GFs, leading to efforts to produce thicker GFs. Nevertheless, increasing the thickness of GFs typically results in a rapid decline in thermal conductivity. Currently, commercial graphene thick films (GTFs) are primarily fabricated by bonding multiple graphene oxide films or GFs to increase thickness, but they usually suffer from poor structural stability and reduced thermal conductivity. Herein, a novel GTFs assembly strategy is proposed to achieve seamless and robust bonding of nano-silver to GFs via evaporative deposition and hot-pressing. The thickness of the composited graphene-silver thick film (GTF-Ag) is 200 μm, with an in-plane thermal conductivity of 1630 W m<sup>−1</sup> K<sup>−1</sup>. Furthermore, GTF-Ag maintains stable structure and thermal conductivity after undergoing temperature treatment from −200 °C to 400 °C and 1200 thermal shock cycles. This work overcomes the traditional trade-off between thickness and thermal conductivity of GTFs, setting a new record for the thermal conductivity of GTFs and providing an efficient and reliable solution for thermal management in high-power devices and extreme environments.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"249 ","pages":"Article 121256"},"PeriodicalIF":11.6,"publicationDate":"2026-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solar-driven interface evaporation of carbon materials: Design, mechanism and application 太阳能驱动碳材料界面蒸发：设计、机理及应用

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-01-10 DOI: 10.1016/j.carbon.2026.121257

Ying Zhang , Jiehui Li , Pu Feng , Hui Liu , Dachuan He , Leihuan Mu , Qinghua Liu , Jinmei He , Yating Zhang , Mengnan Qu

As global freshwater resources are increasingly depleted, solar-driven interfacial evaporation (SDIE), with its advantages of zero carbon and low-cost water production, is becoming a new focus in alleviating the water crisis. Carbon materials, with full-spectrum absorption, tunable porosity, cheap biomass origin, biocompatibility and easy functionalization, outperform costly narrow-band metals/semiconductors and set the indispensable benchmark for scalable green SDIE. This review systematically summarizes recent advances in carbon materials for SDIE, analyzing progress from both material dimensions and application scenarios. The article expounds the basic working mechanism of SDIE, analyzes the key factors for achieving efficient photothermal conversion, including broadband absorption, thermal localization management and water transport optimization. Furthermore, the review highlights that the SDIE technology has expanded from seawater desalination to multiple scenarios such as cogeneration of hydropower, wastewater treatment, oil-water separation, photothermal catalytic hydrogen production, and lithium extraction from seawater, demonstrating the potential of carbon materials in integrated resource-energy-environment management. In the future, this technology needs to focus on atomic-level material regulation, intelligent system design, multi-technology coupling and full life cycle assessment to promote its transition from the laboratory to large-scale application.

随着全球淡水资源的日益枯竭，太阳能驱动界面蒸发（SDIE）以其零碳和低成本的产水优势，成为缓解水资源危机的新热点。碳材料具有全光谱吸收、孔隙度可调、廉价的生物质来源、生物相容性和易于功能化的特点，优于昂贵的窄带金属/半导体，为可扩展的绿色SDIE设定了不可或缺的基准。本文系统总结了SDIE碳材料的最新进展，从材料维度和应用场景两方面分析了进展。阐述了SDIE的基本工作机制，分析了实现高效光热转换的关键因素，包括宽带吸收、热局部化管理和水运优化。此外，综述强调，SDIE技术已经从海水淡化扩展到水电热电联产、废水处理、油水分离、光热催化制氢和海水锂提取等多种场景，展示了碳材料在资源-能源-环境综合管理中的潜力。未来，该技术需要从原子级材料调控、智能系统设计、多技术耦合和全生命周期评估等方面入手，推动其从实验室向大规模应用过渡。

{"title":"Solar-driven interface evaporation of carbon materials: Design, mechanism and application","authors":"Ying Zhang , Jiehui Li , Pu Feng , Hui Liu , Dachuan He , Leihuan Mu , Qinghua Liu , Jinmei He , Yating Zhang , Mengnan Qu","doi":"10.1016/j.carbon.2026.121257","DOIUrl":"10.1016/j.carbon.2026.121257","url":null,"abstract":"<div><div>As global freshwater resources are increasingly depleted, solar-driven interfacial evaporation (SDIE), with its advantages of zero carbon and low-cost water production, is becoming a new focus in alleviating the water crisis. Carbon materials, with full-spectrum absorption, tunable porosity, cheap biomass origin, biocompatibility and easy functionalization, outperform costly narrow-band metals/semiconductors and set the indispensable benchmark for scalable green SDIE. This review systematically summarizes recent advances in carbon materials for SDIE, analyzing progress from both material dimensions and application scenarios. The article expounds the basic working mechanism of SDIE, analyzes the key factors for achieving efficient photothermal conversion, including broadband absorption, thermal localization management and water transport optimization. Furthermore, the review highlights that the SDIE technology has expanded from seawater desalination to multiple scenarios such as cogeneration of hydropower, wastewater treatment, oil-water separation, photothermal catalytic hydrogen production, and lithium extraction from seawater, demonstrating the potential of carbon materials in integrated resource-energy-environment management. In the future, this technology needs to focus on atomic-level material regulation, intelligent system design, multi-technology coupling and full life cycle assessment to promote its transition from the laboratory to large-scale application.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"249 ","pages":"Article 121257"},"PeriodicalIF":11.6,"publicationDate":"2026-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Uniformly confined heteroatoms in mesoporous carbon engineered by organic-inorganic hybrid template for ultrafast-charging sodium-ion batteries 超快充电钠离子电池用有机-无机杂化模板设计介孔碳中均匀限制杂原子

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-01-10 DOI: 10.1016/j.carbon.2026.121258

Yuxiao Chen , Youyu Duan , Xiaoyan Li , Xinran Wang , Zeyu Chen , Yuruo Qi , Xing Shen , Junmei Zhao

Sodium-ion batteries are promising for large-scale storage due to low material cost and abundant resources, but their commercialization is plagued by two anode bottlenecks: high cost stemming from energy-intensive synthesis and limited fast charging due to the slow ion diffusion rate. Herein, we develop an in situ carbonization-pore-forming strategy that enables the construction of N/O/S coupled mesoporous carbon through synergistic multiscale regulation. Comprehensive density functional theory calculations combined with multiscale characterization reveal that the optimized heteroatom-doped mesoporous carbon anode exhibits expanded interlayer spacing, dramatically enhanced specific surface area, and abundant heteroatom-derived active sites. The engineered anode demonstrates exceptional electrochemical performance, including a high initial coulombic efficiency (82.5 %), outstanding rate capability (193.5 mAh g⁻¹ at 6 A g⁻¹), and exceptional cycling stability (>10,000 cycles). Through systematic spectroscopy and X-ray technique analysis, a unique four-stage sodium storage elucidation mechanism of “surface adsorption-interlayer adsorption-intercalation-pore filling can be achieved. This work establishes a novel multiscale structural design paradigm for advanced carbon anodes, providing critical insights for developing high-performance and fast-charging sodium-ion batteries.

钠离子电池因其材料成本低、资源丰富而具有大规模存储的前景，但其商业化受到两大阳极瓶颈的困扰：一是能量密集型的合成成本高，二是离子扩散速度慢导致的快速充电受限。在此，我们开发了一种原位碳化成孔策略，可以通过协同多尺度调节构建N/O/S耦合介孔碳。综合密度泛函理论计算结合多尺度表征表明，优化后的杂原子掺杂介孔碳阳极层间距扩大，比表面积显著提高，杂原子衍生活性位点丰富。工程阳极表现出优异的电化学性能，包括高初始库仑效率（82.5%），出色的倍率能力（在6 a g−1时193.5 mAh g−1）和优异的循环稳定性（>10,000次循环）。通过系统光谱学和x射线技术分析，实现了独特的“表面吸附-层间吸附-插层-孔隙填充”四阶段钠储存解析机制。这项工作为先进的碳阳极建立了一种新的多尺度结构设计范式，为开发高性能和快速充电的钠离子电池提供了重要的见解。

{"title":"Uniformly confined heteroatoms in mesoporous carbon engineered by organic-inorganic hybrid template for ultrafast-charging sodium-ion batteries","authors":"Yuxiao Chen , Youyu Duan , Xiaoyan Li , Xinran Wang , Zeyu Chen , Yuruo Qi , Xing Shen , Junmei Zhao","doi":"10.1016/j.carbon.2026.121258","DOIUrl":"10.1016/j.carbon.2026.121258","url":null,"abstract":"<div><div>Sodium-ion batteries are promising for large-scale storage due to low material cost and abundant resources, but their commercialization is plagued by two anode bottlenecks: high cost stemming from energy-intensive synthesis and limited fast charging due to the slow ion diffusion rate. Herein, we develop an <em>in situ</em> carbonization-pore-forming strategy that enables the construction of N/O/S coupled mesoporous carbon through synergistic multiscale regulation. Comprehensive density functional theory calculations combined with multiscale characterization reveal that the optimized heteroatom-doped mesoporous carbon anode exhibits expanded interlayer spacing, dramatically enhanced specific surface area, and abundant heteroatom-derived active sites. The engineered anode demonstrates exceptional electrochemical performance, including a high initial coulombic efficiency (82.5 %), outstanding rate capability (193.5 mAh g<sup>−1</sup> at 6 A g<sup>−1</sup>), and exceptional cycling stability (>10,000 cycles). Through systematic spectroscopy and X-ray technique analysis, a unique four-stage sodium storage elucidation mechanism of “surface adsorption-interlayer adsorption-intercalation-pore filling can be achieved. This work establishes a novel multiscale structural design paradigm for advanced carbon anodes, providing critical insights for developing high-performance and fast-charging sodium-ion batteries.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"249 ","pages":"Article 121258"},"PeriodicalIF":11.6,"publicationDate":"2026-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetically trapped amorphous states and AB pairing in rGO: an in-situ XRD study of process–structure map 还原氧化石墨烯的动力学捕获非晶态和AB配对：过程结构图的原位XRD研究

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-01-09 DOI: 10.1016/j.carbon.2026.121247

Nicolò Galvani , Jasper R. Plaisier , Cosimo Anichini , Alicia Moya , Paolo Samorì , Andrea Liscio , Fabiola Liscio

Understanding and controlling the evolution of the graphene oxide (GO) structure during thermal reduction is critical for tailoring the reduced GO (rGO) properties for applications in energy storage and generation, electronics, and membrane. While previous in-situ diffraction studies have largely focused on interlayer collapse along the (00ℓ) direction, the fate of the in-plane lattice and stacking registry has remained elusive. Here, we use synchrotron powder X-ray diffraction, complemented by in-/out-of-plane laboratory measurements on films, to monitor the (100)/(101) region of GO during reduction. Applying the Basic Structural Components (BSC) model, we quantitatively track turbostratic single layers, AB-paired bilayers, and short Bernal ABA sequences, alongside the evolving in-plane lattice parameter. We uncover a transient, rate-selected amorphous-like regime (140–190 °C) where the (100) intensity nearly vanishes, followed by divergent kinetic pathways: fast ramps trap AB-enriched but ABA-deficient states even at 900 °C, whereas slow ramps (≤0.5 °C/min) below ∼240 °C enable progressive AB ordering and the emergence of short-range ABA. These results establish a process–structure map linking thermal history to stacking registry and in-plane strain. Beyond elucidating the reduction mechanism, our work outlines kinetic guidelines to deliberately trap amorphous-like 2D carbon or promote AB/ABA order, providing a controllable pathway to engineer interlayer coupling in rGO.

了解和控制氧化石墨烯（GO）在热还原过程中结构的演变对于调整还原氧化石墨烯（rGO）的性能至关重要，可以应用于储能和发电、电子和膜等领域。虽然以前的原位衍射研究主要集中在（00）方向的层间坍塌，但面内晶格和堆积登记的命运仍然难以捉摸。在这里，我们使用同步加速器粉末x射线衍射，辅以在薄膜上的平面内/平面外实验室测量，来监测还原过程中氧化石墨烯的(100)/(101)区域。应用基本结构成分（BSC）模型，我们定量跟踪涡轮层单层、ab配对双层和短Bernal ABA序列，以及不断变化的平面内晶格参数。我们发现了一种瞬时的、速率选择的非晶样状态（140-190°C），其中（100）强度几乎消失，随后是不同的动力学途径：即使在900°C下，快速坡道也能捕获富含ABA但缺乏ABA的状态，而低于~ 240°C的慢坡道（≤0.5°C/min）则能实现渐进的AB排序和短距离ABA的出现。这些结果建立了一个过程结构图，将热历史与堆积登记和面内应变联系起来。除了阐明还原机制外，我们的研究还概述了有意捕获非晶样2D碳或促进AB/ABA顺序的动力学指导方针，为工程还原氧化石墨烯层间耦合提供了一个可控的途径。

{"title":"Kinetically trapped amorphous states and AB pairing in rGO: an in-situ XRD study of process–structure map","authors":"Nicolò Galvani , Jasper R. Plaisier , Cosimo Anichini , Alicia Moya , Paolo Samorì , Andrea Liscio , Fabiola Liscio","doi":"10.1016/j.carbon.2026.121247","DOIUrl":"10.1016/j.carbon.2026.121247","url":null,"abstract":"<div><div>Understanding and controlling the evolution of the graphene oxide (GO) structure during thermal reduction is critical for tailoring the reduced GO (rGO) properties for applications in energy storage and generation, electronics, and membrane. While previous in-situ diffraction studies have largely focused on interlayer collapse along the (00ℓ) direction, the fate of the in-plane lattice and stacking registry has remained elusive. Here, we use synchrotron powder X-ray diffraction, complemented by in-/out-of-plane laboratory measurements on films, to monitor the (100)/(101) region of GO during reduction. Applying the Basic Structural Components (BSC) model, we quantitatively track turbostratic single layers, AB-paired bilayers, and short Bernal ABA sequences, alongside the evolving in-plane lattice parameter. We uncover a transient, rate-selected amorphous-like regime (140–190 °C) where the (100) intensity nearly vanishes, followed by divergent kinetic pathways: fast ramps trap AB-enriched but ABA-deficient states even at 900 °C, whereas slow ramps (≤0.5 °C/min) below ∼240 °C enable progressive AB ordering and the emergence of short-range ABA. These results establish a process–structure map linking thermal history to stacking registry and in-plane strain. Beyond elucidating the reduction mechanism, our work outlines kinetic guidelines to deliberately trap amorphous-like 2D carbon or promote AB/ABA order, providing a controllable pathway to engineer interlayer coupling in rGO.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"249 ","pages":"Article 121247"},"PeriodicalIF":11.6,"publicationDate":"2026-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cu-catalyzed carbonization microenvironment enables interfacial coupling in silicon-graphite anodes 铜催化碳化微环境使界面耦合在硅-石墨阳极

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-01-08 DOI: 10.1016/j.carbon.2026.121252

Yin Zhao , Jiali Li , Yuehua Liu , Zheng He , Yuzhe Qian , Zhi Wang , Junhao Liu , Deping Xu , Yonggang Wang , Xuzhong Gong

Commercial silicon-graphite anodes typically restrict the silicon fraction below 10 % to preserve structural integrity, yet this compromises their energy density. When the silicon content rises to ∼20 %, the severe volume mismatch between silicon and graphite generates interfacial delamination, SEI overgrowth, and rapid capacity decay. Conventional carbon coatings fail to resolve this conflict—soft carbons creep plastically, while hard carbons are rigid but disordered, causing brittle fracture and weak interfacial bonding. Here, we introduce a Cu-regulated carbonization microenvironment strategy to construct a robust silicon-graphite composite. Trace Cu catalytically redirects the pyrolysis of glucose toward aromatization-graphitization, yielding a high-sp², densely stacked carbon sheath with superior conductivity and mechanical strength. Simultaneously, Cu acts as a chemical welder, weakening Si–Si bonds and inducing covalent Si–C/Si–O–C linkages that anchor the carbon shell to the active core. The resulting Cu-templated composite maintains structural integrity and achieves 94.3 % capacity retention after 600 cycles at 0.2 A g⁻¹. This work establishes a dual catalytic-interfacial function of Cu, offering a new paradigm for carbon microenvironment regulation in high-silicon composite anodes.

为了保持结构的完整性，商用硅石墨阳极通常会将硅的含量限制在10%以下，但这会损害其能量密度。当硅含量上升到~ 20%时，硅和石墨之间严重的体积失配会产生界面分层、SEI过度生长和容量快速衰减。传统的碳涂层无法解决这一矛盾——软碳具有塑性蠕变，而硬碳具有刚性但无序性，导致脆性断裂和界面结合弱。在这里，我们介绍了一种cu调节碳化微环境策略来构建坚固的硅-石墨复合材料。微量Cu催化重定向葡萄糖的热解向芳构化-石墨化，产生高sp2，密集堆叠的碳鞘具有优异的导电性和机械强度。同时，Cu充当化学焊机，削弱Si-Si键，诱导共价Si-C / Si-O-C键，将碳壳固定在活性核心上。得到的cu模板复合材料在0.2 A g−1下循环600次后保持结构完整性，并达到94.3%的容量保持率。本研究建立了Cu的双催化界面功能，为高硅复合材料阳极中的碳微环境调控提供了新的范例。

{"title":"Cu-catalyzed carbonization microenvironment enables interfacial coupling in silicon-graphite anodes","authors":"Yin Zhao , Jiali Li , Yuehua Liu , Zheng He , Yuzhe Qian , Zhi Wang , Junhao Liu , Deping Xu , Yonggang Wang , Xuzhong Gong","doi":"10.1016/j.carbon.2026.121252","DOIUrl":"10.1016/j.carbon.2026.121252","url":null,"abstract":"<div><div>Commercial silicon-graphite anodes typically restrict the silicon fraction below 10 % to preserve structural integrity, yet this compromises their energy density. When the silicon content rises to ∼20 %, the severe volume mismatch between silicon and graphite generates interfacial delamination, SEI overgrowth, and rapid capacity decay. Conventional carbon coatings fail to resolve this conflict—soft carbons creep plastically, while hard carbons are rigid but disordered, causing brittle fracture and weak interfacial bonding. Here, we introduce a Cu-regulated carbonization microenvironment strategy to construct a robust silicon-graphite composite. Trace Cu catalytically redirects the pyrolysis of glucose toward aromatization-graphitization, yielding a high-<em>sp</em><sup>2</sup>, densely stacked carbon sheath with superior conductivity and mechanical strength. Simultaneously, Cu acts as a chemical welder, weakening Si–Si bonds and inducing covalent Si–C/Si–<em>O</em>–C linkages that anchor the carbon shell to the active core. The resulting Cu-templated composite maintains structural integrity and achieves 94.3 % capacity retention after 600 cycles at 0.2 A g<sup>−1</sup>. This work establishes a dual catalytic-interfacial function of Cu, offering a new paradigm for carbon microenvironment regulation in high-silicon composite anodes.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"249 ","pages":"Article 121252"},"PeriodicalIF":11.6,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of microporous oxygen- and nitrogen-rich carbon materials via pre-oxidation-hydrothermal synergistic regulation strategy and the nonlinear enhancement effect in zinc ion storage 预氧化-水热协同调控策略及锌离子存储非线性增强效应制备富氧富氮碳微孔材料

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-01-08 DOI: 10.1016/j.carbon.2026.121248

Yuming Cui , Ruiheng Jia , Yichao Su , Zhen Wei , Zhongxin Xue , Xiao Li , Yulin Li , Shihao Pei , Yan Song

We demonstrate a breakthrough in designing high-performance carbon cathodes for aqueous zinc-ion hybrid supercapacitors (ZIHSs) through synergistically regulating pore structure (including activation temperature and activator content) and doping with heteroatoms. Unlike conventional carbon materials limited by insufficient active sites and poor ion transport kinetics, our novel 3D networked porous carbon (N/O-APC-2) derived from asphaltene precursors achieves unprecedented performance via a unique triple-modification strategy combining HNO₃ pre-oxidation, hydrothermal N-doping, and KOH activation. The optimized material exhibits dual advantages: 1) A hierarchically porous structure (2222 m² g⁻¹ surface area) with precisely tuned 0.8–1.5 nm micropores matching hydrated Zn²⁺/SO₄²⁻ dimensions, and 2) Abundant redox-active O (14.07 at%) and N (2.35 at%) sites. DFT calculations reveal the synergistic enhancement (2.28 eV adsorption energy) from N/O co-doping, surpassing single-doped systems. The resulting ZIHSs deliver record-breaking performance: 220.1 mAh g⁻¹ capacity at 0.1 A g⁻¹, 160.1 Wh kg⁻¹ energy density at 3339.5 W kg⁻¹ power density, and 86.2 % capacity retention after 10,000 cycles. And N/O-APC-2-based flexible solid-state device demonstrates remarkable electrochemical stability across a wide range of bending conditions, maintaining consistent performance metrics throughout mechanical deformation tests. This work establishes a new paradigm for coal-derived functional carbons in energy storage applications.

通过协同调节孔隙结构（包括活化温度和活化剂含量）和掺杂杂原子，我们在设计高性能锌离子混合超级电容器（ZIHSs）的碳阴极方面取得了突破性进展。不像传统的碳材料受到活性位点不足和离子传输动力学差的限制，我们的新型3D网状多孔碳（N/O-APC-2）来源于沥青质前体，通过独特的三重改性策略，结合HNO3预氧化、水热N掺杂和KOH活化，实现了前所未有的性能。优化后的材料具有双重优势：1)分层多孔结构（2222 m2 g−1表面积），具有精确调谐的0.8-1.5 nm微孔，与水合Zn2+/SO42−尺寸匹配；2)丰富的氧化还原活性O （14.07 at%）和N （2.35 at%）位点。DFT计算表明，N/O共掺杂的协同增强（2.28 eV吸附能）超过了单掺杂体系。由此产生的zihs具有破纪录的性能：在0.1 A g−1时容量为220.1 mAh g−1，在3339.5 W kg−1功率密度下能量密度为160.1 Wh kg−1，在10,000次循环后容量保持率为86.2%。基于N/ o - apc -2的柔性固态器件在广泛的弯曲条件下表现出卓越的电化学稳定性，在整个机械变形测试中保持一致的性能指标。这项工作为煤衍生的功能碳在储能应用中建立了一个新的范例。

{"title":"Preparation of microporous oxygen- and nitrogen-rich carbon materials via pre-oxidation-hydrothermal synergistic regulation strategy and the nonlinear enhancement effect in zinc ion storage","authors":"Yuming Cui , Ruiheng Jia , Yichao Su , Zhen Wei , Zhongxin Xue , Xiao Li , Yulin Li , Shihao Pei , Yan Song","doi":"10.1016/j.carbon.2026.121248","DOIUrl":"10.1016/j.carbon.2026.121248","url":null,"abstract":"<div><div>We demonstrate a breakthrough in designing high-performance carbon cathodes for aqueous zinc-ion hybrid supercapacitors (ZIHSs) through synergistically regulating pore structure (including activation temperature and activator content) and doping with heteroatoms. Unlike conventional carbon materials limited by insufficient active sites and poor ion transport kinetics, our novel 3D networked porous carbon (N/O-APC-2) derived from asphaltene precursors achieves unprecedented performance via a unique triple-modification strategy combining HNO<sub>3</sub> pre-oxidation, hydrothermal N-doping, and KOH activation. The optimized material exhibits dual advantages: 1) A hierarchically porous structure (2222 m<sup>2</sup> g<sup>−1</sup> surface area) with precisely tuned 0.8–1.5 nm micropores matching hydrated Zn<sup>2+</sup>/SO<sub>4</sub><sup>2−</sup> dimensions, and 2) Abundant redox-active O (14.07 at%) and N (2.35 at%) sites. DFT calculations reveal the synergistic enhancement (2.28 eV adsorption energy) from N/O co-doping, surpassing single-doped systems. The resulting ZIHSs deliver record-breaking performance: 220.1 mAh g<sup>−1</sup> capacity at 0.1 A g<sup>−1</sup>, 160.1 Wh kg<sup>−1</sup> energy density at 3339.5 W kg<sup>−1</sup> power density, and 86.2 % capacity retention after 10,000 cycles. And N/O-APC-2-based flexible solid-state device demonstrates remarkable electrochemical stability across a wide range of bending conditions, maintaining consistent performance metrics throughout mechanical deformation tests. This work establishes a new paradigm for coal-derived functional carbons in energy storage applications.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"249 ","pages":"Article 121248"},"PeriodicalIF":11.6,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of carbon support on rhenium-catalyzed glyceric acid deoxydehydration into biobased acrylic acid 碳载体对铼催化甘油脱氧脱水制生物基丙烯酸的影响

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-01-08 DOI: 10.1016/j.carbon.2026.121244

Maja Gabrič , Brigita Hočevar , Anej Blažič , Janvit Teržan , Sašo Gyergyek , Blaž Likozar , Miha Grilc

The influence of carbon support structure on the dispersion, oxidation state, and catalytic activity of rhenium species was systematically investigated in the deoxydehydration (DODH) of bio-based glyceric acid towards acrylic acid. Rhenium-based catalysts (targeting 5 wt% Re) were prepared by incipient wetness impregnation on activated carbons, carbon black, graphite, glassy carbon, and multiwalled carbon nanotubes. Comprehensive characterization by N₂ physisorption, scanning transmission electron microscopy, X-ray fluorescence, CO pulse adsorption, and X-ray photoelectron spectroscopy revealed that the support choice strongly affected rhenium particle size distribution, accessibility, and stabilization of oxidation states. Catalytic tests conducted at 150 °C under inert atmosphere in methanol solvent, identified activated carbon supports as the most effective, reaching combined selectivities up to 83 % toward DODH products (acrylic acid and methyl acrylate), comparable to those of the commercial Re/C catalyst. In contrast, the carbon black – supported catalyst exhibited very low activity toward DODH products, while the other carbon materials were practically inactive. The superior performance of activated carbon supports is due to the high surface area and mesoporous structure, which promotes better dispersion and accessibility of the active high valent Re species. These results highlight the decisive role of carbon support morphology and surface chemistry in governing the performance of rhenium catalysts, providing guidelines for the rational design of carbon-supported systems for biomass valorization.

在生物基甘油对丙烯酸的脱氧脱水（DODH）过程中，系统地研究了碳载体结构对铼的分散、氧化态和催化活性的影响。以活性炭、炭黑、石墨、玻碳和多壁碳纳米管为载体，采用初湿浸渍法制备了5 wt% Re的铼基催化剂。通过N2物理吸附、扫描透射电镜、x射线荧光、CO脉冲吸附和x射线光电子能谱的综合表征表明，载体的选择对铼的粒径分布、可及性和氧化态的稳定性有很大影响。在150°C的惰性气氛下，在甲醇溶剂中进行的催化测试发现，活性炭载体是最有效的，对DODH产品（丙烯酸和丙烯酸甲酯）的总选择性高达83%，与商用Re/C催化剂相当。相比之下，炭黑负载的催化剂对DODH产物的活性很低，而其他碳材料几乎没有活性。活性炭载体的优异性能是由于其高比表面积和介孔结构，促进了活性高价稀土的良好分散和可及性。这些结果突出了碳载体形态和表面化学在控制铼催化剂性能中的决定性作用，为合理设计生物质增值碳载体系统提供了指导。

{"title":"The effect of carbon support on rhenium-catalyzed glyceric acid deoxydehydration into biobased acrylic acid","authors":"Maja Gabrič , Brigita Hočevar , Anej Blažič , Janvit Teržan , Sašo Gyergyek , Blaž Likozar , Miha Grilc","doi":"10.1016/j.carbon.2026.121244","DOIUrl":"10.1016/j.carbon.2026.121244","url":null,"abstract":"<div><div>The influence of carbon support structure on the dispersion, oxidation state, and catalytic activity of rhenium species was systematically investigated in the deoxydehydration (DODH) of bio-based glyceric acid towards acrylic acid. Rhenium-based catalysts (targeting 5 wt% Re) were prepared by incipient wetness impregnation on activated carbons, carbon black, graphite, glassy carbon, and multiwalled carbon nanotubes. Comprehensive characterization by N<sub>2</sub> physisorption, scanning transmission electron microscopy, X-ray fluorescence, CO pulse adsorption, and X-ray photoelectron spectroscopy revealed that the support choice strongly affected rhenium particle size distribution, accessibility, and stabilization of oxidation states. Catalytic tests conducted at 150 °C under inert atmosphere in methanol solvent, identified activated carbon supports as the most effective, reaching combined selectivities up to 83 % toward DODH products (acrylic acid and methyl acrylate), comparable to those of the commercial Re/C catalyst. In contrast, the carbon black – supported catalyst exhibited very low activity toward DODH products, while the other carbon materials were practically inactive. The superior performance of activated carbon supports is due to the high surface area and mesoporous structure, which promotes better dispersion and accessibility of the active high valent Re species. These results highlight the decisive role of carbon support morphology and surface chemistry in governing the performance of rhenium catalysts, providing guidelines for the rational design of carbon-supported systems for biomass valorization.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"249 ","pages":"Article 121244"},"PeriodicalIF":11.6,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Graphene oxide nanosheet trehalose-assisted lyophilization with enhanced stability and facile aqueous reconstitution for biopharmaceutical use 氧化石墨烯纳米片海藻糖辅助冻干，具有增强的稳定性和易于水重构的生物制药用途

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-01-08 DOI: 10.1016/j.carbon.2026.121254

Gloria Garcia-Ortega , Neus Lozano , Kostas Kostarelos

Graphene oxide (GO) has emerged as a nanomaterial of considerable interest owing to its unique physicochemical properties, including excellent water dispersibility, ease of functionalization, and favorable biocompatibility and safety profile. These features position GO as a promising and tunable platform for a wide range of technological and biomedical applications. Accordingly, as GO-based systems continue to advance toward real-world applications, considerations around long-term storage and stability are gaining relevance. Lyophilization is a widely adopted strategy to preserve the structural and functional integrity of nanomaterials to be reconstituted on demand, yet GO suspensions exhibited poor stability upon reconstitution following lyophilization. We present a simple and effective method using trehalose (T) as a lyoprotectant to stabilize GO during lyophilization. The resulting dried GO + T formulations exhibit improved reconstitution behavior at physiological pH, and characterization confirms the preservation of the nanosheet structural integrity. More specifically, such approach can enable the long-term storage of GO, facilitating its further development as a biopharmaceutical agent.

氧化石墨烯（GO）由于其独特的物理化学性质，包括优异的水分散性、易于功能化、良好的生物相容性和安全性，已成为一种备受关注的纳米材料。这些特点使GO成为广泛的技术和生物医学应用的有前途和可调的平台。因此，随着基于go的系统不断向现实应用发展，长期存储和稳定性的考虑变得越来越重要。冻干是一种广泛采用的策略，以保持纳米材料的结构和功能完整性，以根据需要进行重组，然而氧化石墨烯悬浮液在冻干后的重组中表现出较差的稳定性。我们提出了一种简单有效的方法，使用海藻糖(T)作为冻干保护剂在冻干过程中稳定氧化石墨烯。所得到的干燥GO + T配方在生理pH下表现出更好的重构行为，表征证实了纳米片结构完整性的保存。更具体地说，这种方法可以实现氧化石墨烯的长期储存，促进其作为生物制药剂的进一步发展。

{"title":"Graphene oxide nanosheet trehalose-assisted lyophilization with enhanced stability and facile aqueous reconstitution for biopharmaceutical use","authors":"Gloria Garcia-Ortega , Neus Lozano , Kostas Kostarelos","doi":"10.1016/j.carbon.2026.121254","DOIUrl":"10.1016/j.carbon.2026.121254","url":null,"abstract":"<div><div>Graphene oxide (GO) has emerged as a nanomaterial of considerable interest owing to its unique physicochemical properties, including excellent water dispersibility, ease of functionalization, and favorable biocompatibility and safety profile. These features position GO as a promising and tunable platform for a wide range of technological and biomedical applications. Accordingly, as GO-based systems continue to advance toward real-world applications, considerations around long-term storage and stability are gaining relevance. Lyophilization is a widely adopted strategy to preserve the structural and functional integrity of nanomaterials to be reconstituted on demand, yet GO suspensions exhibited poor stability upon reconstitution following lyophilization. We present a simple and effective method using trehalose (T) as a lyoprotectant to stabilize GO during lyophilization. The resulting dried GO + T formulations exhibit improved reconstitution behavior at physiological pH, and characterization confirms the preservation of the nanosheet structural integrity. More specifically, such approach can enable the long-term storage of GO, facilitating its further development as a biopharmaceutical agent.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"250 ","pages":"Article 121254"},"PeriodicalIF":11.6,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-functional atomic layer graphene enable bias-free photoelectrochemical iodide oxidation reaction for seawater splitting 双功能原子层石墨烯实现无偏置光电电化学碘化氧化反应，用于海水裂解

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-01-08 DOI: 10.1016/j.carbon.2026.121250

Yung-Hung Huang , Po-Hsien Wu , Yang-Sheng Lu , Yin-Cheng Lin , Chih-Ying Huang , Cheng-Yu Yu , Zih-Wei Cyue , Jou-Chun Lin , Chun-Chih Chang , Shao-Sian Li , Bing Joe Hwang , Chun-Wei Chen , Di-Yan Wang

Bias-free photoelectrochemical (PEC) seawater splitting has emerged as an attractive technology for solar-to-hydrogen (STH) conversion. This work demonstrates a promising alternative by replacing the sluggish kinetics of the oxygen evolution reaction (OER) with iodide oxidation reaction (IOR), which requires a much lower oxidation potential of 0.53 V vs. RHE. This approach facilitates bias-free solar-to-hydrogen (STH) conversion directly from natural seawater while simultaneously producing high-value triiodide (I₃⁻) chemicals. An atomic layer of graphene functions as an efficient catalyst for PEC IOR when integrated with a Si heterojunction photoanode, exhibiting a promising PEC IOR with a low onset potential of 0.05 V vs. RHE. The unique two-dimensional energy dispersion and delocalized π-electrons of graphene facilitate rapid charge transfer, thereby enhancing overall catalytic efficiency. In-situ Raman spectroscopic analysis was performed to manifest that In-situ Raman spectroscopy reveals that adsorbed iodide/iodine species will induce local lattice strain in graphene, which perturbs the coherence of phonon scattering in the π-system. Moreover, when coupled with a Pt/graphene/Si heterojunction photocathode for HER, a bias-free PEC system for STH and IOR can be simultaneously achieved. This system demonstrates remarkable performance and stability, yielding a high photocurrent density of 14.22 mA/cm² for simulated seawater and 13.13 mA/cm² for natural seawater without any applied bias under 1 sun illumination. The integrated graphene/Si heterojunction photoelectrodes provide a promising platform for developing stable and high-performance bias-free PEC cells, facilitating simultaneous STH conversion and producing valuable chemicals from seawater.

无偏压光电化学（PEC）海水分解已成为一种极具吸引力的太阳能制氢（STH）转化技术。这项工作证明了用碘化物氧化反应（IOR）取代缓慢的析氧反应（OER）动力学是一种有希望的替代方案，与RHE相比，它需要0.53 V的低氧化电位。这种方法促进了直接从天然海水中无偏太阳能制氢（STH）的转化，同时生产高价值的三碘化物（I3−）化学品。当石墨烯原子层与硅异质结光阳极集成时，可作为PEC IOR的有效催化剂，与RHE相比，具有0.05 V的低起始电位。石墨烯独特的二维能量分散和离域π电子有利于快速电荷转移，从而提高整体催化效率。原位拉曼光谱分析表明，吸附的碘化物/碘物质会在石墨烯中引起局部晶格应变，从而干扰π-体系中声子散射的相干性。此外，当与用于HER的Pt/石墨烯/Si异质结光电阴极耦合时，可以同时实现用于STH和IOR的无偏置PEC系统。该系统表现出卓越的性能和稳定性，在1个太阳照射下，模拟海水的光电流密度为14.22 mA/cm2，天然海水的光电流密度为13.13 mA/cm2，没有任何应用偏差。集成的石墨烯/硅异质结光电极为开发稳定和高性能的无偏置PEC电池提供了一个有前途的平台，促进了STH的同时转化，并从海水中产生有价值的化学物质。

{"title":"Dual-functional atomic layer graphene enable bias-free photoelectrochemical iodide oxidation reaction for seawater splitting","authors":"Yung-Hung Huang , Po-Hsien Wu , Yang-Sheng Lu , Yin-Cheng Lin , Chih-Ying Huang , Cheng-Yu Yu , Zih-Wei Cyue , Jou-Chun Lin , Chun-Chih Chang , Shao-Sian Li , Bing Joe Hwang , Chun-Wei Chen , Di-Yan Wang","doi":"10.1016/j.carbon.2026.121250","DOIUrl":"10.1016/j.carbon.2026.121250","url":null,"abstract":"<div><div>Bias-free photoelectrochemical (PEC) seawater splitting has emerged as an attractive technology for solar-to-hydrogen (STH) conversion. This work demonstrates a promising alternative by replacing the sluggish kinetics of the oxygen evolution reaction (OER) with iodide oxidation reaction (IOR), which requires a much lower oxidation potential of 0.53 V vs. RHE. This approach facilitates bias-free solar-to-hydrogen (STH) conversion directly from natural seawater while simultaneously producing high-value triiodide (I<sub>3</sub><sup>−</sup>) chemicals. An atomic layer of graphene functions as an efficient catalyst for PEC IOR when integrated with a Si heterojunction photoanode, exhibiting a promising PEC IOR with a low onset potential of 0.05 V vs. RHE. The unique two-dimensional energy dispersion and delocalized π-electrons of graphene facilitate rapid charge transfer, thereby enhancing overall catalytic efficiency. In-situ Raman spectroscopic analysis was performed to manifest that In-situ Raman spectroscopy reveals that adsorbed iodide/iodine species will induce local lattice strain in graphene, which perturbs the coherence of phonon scattering in the π-system. Moreover, when coupled with a Pt/graphene/Si heterojunction photocathode for HER, a bias-free PEC system for STH and IOR can be simultaneously achieved. This system demonstrates remarkable performance and stability, yielding a high photocurrent density of 14.22 mA/cm<sup>2</sup> for simulated seawater and 13.13 mA/cm<sup>2</sup> for natural seawater without any applied bias under 1 sun illumination. The integrated graphene/Si heterojunction photoelectrodes provide a promising platform for developing stable and high-performance bias-free PEC cells, facilitating simultaneous STH conversion and producing valuable chemicals from seawater.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"249 ","pages":"Article 121250"},"PeriodicalIF":11.6,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Graphene oxide quantum dots as an additive in the electrolyte for enhanced cycle retention of zinc-ion secondary battery 氧化石墨烯量子点作为锌离子二次电池电解液中增强循环保持的添加剂

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2026-01-07 DOI: 10.1016/j.carbon.2026.121246

Jinyoung Lee , Youjin Park , Kangpyo Lee , Hyuksu Han , Kang min Kim , Sungwook Mhin

The increasing global demand for renewable energy has intensified the need for efficient and stable energy storage systems capable of compensating for the intermittent nature of renewable power sources. Among various candidates, aqueous zinc-ion batteries have attracted significant attention as promising alternatives to conventional lithium-ion batteries, owing to their abundant zinc resources, high theoretical capacity, and excellent intrinsic safety derived from aqueous electrolytes. However, several technological limitations, such as zinc dendritic growth, hydrogen evolution reaction, corrosion, and byproduct formation, still hinder their practical application. Here, graphene oxide quantum dots (GOQDs) synthesized via pulsed laser ablation in liquid media are introduced as multifunctional electrolyte additives to stabilize the interface between Zn and electrolyte. The oxygen-rich GOQDs reconstruct the Zn²⁺ solvation shell and homogenize interfacial charge distribution, thereby suppressing dendrite formation and hydrogen evolution while accelerating Zn²⁺ transport. The Zn//Zn symmetric cell with GOQDs-added electrolyte exhibits an extended lifespan exceeding 150 h, which was approximately three times longer than that of the pristine electrolyte. Also, the Na₂V₆O₁₆·2H₂O//Zn full cell delivers 81.0 % capacity retention after 3000 cycles at 1 A g⁻¹. This work establishes a laser-engineered nanocarbon strategy that enables controlled interfacial chemistry and facet-selective stabilization, providing molecular-level insight into electrolyte design principles for achieving dendrite-free, durable, and intrinsically safe batteries.

随着全球对可再生能源需求的不断增长，对能够补偿可再生能源间歇性的高效、稳定的能源储存系统的需求也随之增加。在众多候选材料中，由于锌资源丰富、理论容量高、水性电解质具有优异的本质安全性，水性锌离子电池作为传统锂离子电池的替代品受到了广泛关注。然而，锌枝晶生长、析氢反应、腐蚀和副产物形成等技术限制仍然阻碍了它们的实际应用。本文介绍了通过脉冲激光烧蚀在液体介质中合成氧化石墨烯量子点（GOQDs）作为稳定锌与电解质界面的多功能电解质添加剂。富氧GOQDs重构了Zn2+的溶剂化壳层，使界面电荷分布均匀，从而抑制了枝晶的形成和析氢，同时加速了Zn2+的输运。添加goqds的锌/锌对称电池的寿命超过150小时，约为原始电解质的3倍。此外，Na2V6O16·2H2O//Zn全电池在1 A g−1下循环3000次后，容量保持率为81.0%。这项工作建立了一种激光工程纳米碳策略，可以控制界面化学和表面选择性稳定，为实现无枝晶、耐用和本质安全的电池提供分子水平的电解质设计原则。

{"title":"Graphene oxide quantum dots as an additive in the electrolyte for enhanced cycle retention of zinc-ion secondary battery","authors":"Jinyoung Lee , Youjin Park , Kangpyo Lee , Hyuksu Han , Kang min Kim , Sungwook Mhin","doi":"10.1016/j.carbon.2026.121246","DOIUrl":"10.1016/j.carbon.2026.121246","url":null,"abstract":"<div><div>The increasing global demand for renewable energy has intensified the need for efficient and stable energy storage systems capable of compensating for the intermittent nature of renewable power sources. Among various candidates, aqueous zinc-ion batteries have attracted significant attention as promising alternatives to conventional lithium-ion batteries, owing to their abundant zinc resources, high theoretical capacity, and excellent intrinsic safety derived from aqueous electrolytes. However, several technological limitations, such as zinc dendritic growth, hydrogen evolution reaction, corrosion, and byproduct formation, still hinder their practical application. Here, graphene oxide quantum dots (GOQDs) synthesized via pulsed laser ablation in liquid media are introduced as multifunctional electrolyte additives to stabilize the interface between Zn and electrolyte. The oxygen-rich GOQDs reconstruct the Zn<sup>2+</sup> solvation shell and homogenize interfacial charge distribution, thereby suppressing dendrite formation and hydrogen evolution while accelerating Zn<sup>2+</sup> transport. The Zn//Zn symmetric cell with GOQDs-added electrolyte exhibits an extended lifespan exceeding 150 h, which was approximately three times longer than that of the pristine electrolyte. Also, the Na<sub>2</sub>V<sub>6</sub>O<sub>16</sub>·2H<sub>2</sub>O//Zn full cell delivers 81.0 % capacity retention after 3000 cycles at 1 A g<sup>−1</sup>. This work establishes a laser-engineered nanocarbon strategy that enables controlled interfacial chemistry and facet-selective stabilization, providing molecular-level insight into electrolyte design principles for achieving dendrite-free, durable, and intrinsically safe batteries.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"249 ","pages":"Article 121246"},"PeriodicalIF":11.6,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbon最新文献