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Engineering interfacial charge redistribution in Sb2Te3/MoS2 topological heterojunction for enhanced bifunctional electrocatalysis Sb2Te3/MoS2拓扑异质结中增强双功能电催化的工程界面电荷重分配
IF 15.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-10 DOI: 10.1016/j.cej.2026.174016
Shoujun Ma, Shouyi Wang, Dingxuan Zhang, Xuan Fang, Ying Yang, Dan Fang, Haiyan Tao, Baitong Zhou, Jiayao Jiang, Junjie Pan, Dengkui Wang, Yong Wang, Hao Yan, Jinhua Li, Xiaohua Wang, Dongbo Wang
The development of efficient bifunctional electrocatalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is critical for achieving sustainable hydrogen production through water splitting. A fundamental challenge lies in combining high catalytic activity with rapid charge transport, as conventional electrocatalysts must often strike a balance between these properties. For instance, transition metal dichalcogenides such as MoS2 provide abundant active sites, but suffer from limited conductivity, whereas topological insulators such as Sb2Te3 possess highly conductive surface states, yet lack sufficient catalytic activity. To address this limitation, we constructed a heterojunction by integrating MoS2 with Sb2Te3 on nickel–molybdenum foam (MoS2/Sb2Te3@NMF). The resulting hybrid catalyst exhibited exceptional bifunctional performance in an alkaline electrolyte, achieving ultralow overpotentials of 14 mV for HER and 16 mV for OER at 10 mA·cm−2, with Tafel slopes of 16 and 70 mV·dec−1, respectively, comparable with those of noble metal benchmarks. Mechanistic analysis revealed that the metallic topological surface states of Sb2Te3 promote a significant charge redistribution and the formation of a built-in electric field at the heterointerface, which collectively enhance the charge transfer and optimize the adsorption free energy of reaction intermediates. This work shows that the combination of topological insulators with transition metal dichalcogenides represents an ideal design strategy for high-performance bifunctional electrocatalysts, highlighting the broad potential of topological heterointerfaces in advancing electrocatalytic hydrogen production.
为析氢反应(HER)和析氧反应(OER)开发高效的双功能电催化剂是实现水裂解可持续制氢的关键。一个基本的挑战在于将高催化活性与快速电荷传输结合起来,因为传统的电催化剂通常必须在这些特性之间取得平衡。例如,过渡金属二硫族化合物如MoS2提供丰富的活性位点,但导电性有限,而拓扑绝缘体如Sb2Te3具有高导电性的表面状态,但缺乏足够的催化活性。为了解决这一限制,我们通过将MoS2与Sb2Te3集成在镍钼泡沫(MoS2/Sb2Te3@NMF)上构建了异质结。所制备的杂化催化剂在碱性电解质中表现出优异的双功能性能,在10 mA·cm−2下,HER和OER的过电位分别为14 mV和16 mV, Tafel斜率分别为16和70 mV·dec−1,与贵金属基准相当。机理分析表明,Sb2Te3的金属拓扑表面态促进了显著的电荷重分配,并在异质界面处形成了内置电场,共同增强了电荷转移,优化了反应中间体的吸附自由能。这项工作表明,拓扑绝缘体与过渡金属二硫族化合物的结合代表了高性能双功能电催化剂的理想设计策略,突出了拓扑异质界面在推进电催化制氢方面的广阔潜力。
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引用次数: 0
A high-dielectric additive for enhanced supercapacitor performance with N-doped carbon electrodes 一种用于增强n掺杂碳电极超级电容器性能的高介电添加剂
IF 15.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-10 DOI: 10.1016/j.cej.2026.174038
Hongyu Liang, Hui Li, Shengda Tang, Jiahui Li, Zhaomin Zhu, Li Pan, Yongfeng Bu
Carbon-based supercapacitors represent one of the most widely utilized commercial capacitive energy storage devices. Organic electrolyte systems, particularly tetraethylammonium tetrafluoroborate/acetonitrile (TEABF4/AN), have maintained market dominance for decades due to their superior cost-effectiveness and performance characteristics. However, the potential of conventional carbon-tuning methods to enhance capacitance is now largely exhausted. Herein, we demonstrate that introducing a high dielectric constant organic salt (triethylmethylammonium tetrafluoroborate, TEMABF4) as an electrolyte additive can dramatically increase capacitance. At an optimal concentration of 2 wt% TEMABF4, the capacitance increases by 26% to exceed 200 F g−1, achieving an exceptional energy density of 50 Wh kg−1. This enhancement is due to the smaller radius and asymmetric structure of TEMA+ that compresses the double-layer thickness, surpassing traditional capacitance limits. The underlying mechanism is validated through in situ Raman spectroscopy and molecular dynamics simulations. This electrolyte additive paves the way for high-energy-density supercapacitors by transcending current capacitance limits.
碳基超级电容器是应用最广泛的商用电容储能装置之一。有机电解质系统,特别是四氟硼酸四乙基铵/乙腈(TEABF4/AN),由于其优越的成本效益和性能特点,几十年来一直保持着市场主导地位。然而,传统碳调谐方法提高电容的潜力现在基本上已经耗尽。在此,我们证明了引入高介电常数有机盐(三乙基甲基四氟硼酸铵,TEMABF4)作为电解质添加剂可以显着增加电容。当TEMABF4的最佳浓度为2 wt%时,电容增加26%,超过200 F g−1,实现了50 Wh kg−1的特殊能量密度。这种增强是由于TEMA+的半径更小,结构不对称,压缩了双层厚度,超越了传统的电容限制。通过原位拉曼光谱和分子动力学模拟验证了其潜在机制。这种电解质添加剂通过超越电流电容限制为高能量密度超级电容器铺平了道路。
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引用次数: 0
Preparation of the core-shell grained Li4SiO4 pebble with an excellent CO2 adsorption capacity by solidification of suspension 采用悬浮液固化法制备具有优异CO2吸附性能的核-壳粒状Li4SiO4卵石
IF 15.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-10 DOI: 10.1016/j.cej.2026.174037
Shuxian Wu, Jingli Shi, Hailiang Wang, Peng Yang, Aixia Guo, Penghe Xu, Chaoyang Jia, Lina Zheng, Feng Yu, Hongxia Lu, Hongliang Xu, Hailong Wang
Li4SiO4 has the expansive prospect for high-temperature CO₂ capture. However, the traditional Li4SiO4 powders or pebble adsorbents have a low adsorption efficiency and ordinary cycle stability. In the study, the core-shell grained Li4SiO4 adsorbent pebble was fabricated by using a novel solidification of suspension. The phase composition, microstructure, crushing load, and specific surface area were characterized. And the dynamic and cyclic adsorption/desorption properties were investigated. The core-shell grained Li4SiO4 pebbles displayed excellent dynamic adsorption capacity of 32.7 wt%, and high cyclic adsorption capacity of 29.8–32.4 wt% during 20 cycles. DFT calculations revealed that the presence of Li and O vacancies on the rough poriferous core significantly lowered the diffusion energy barrier to improve CO2 adsorption capacity. Besides, the dense shell prevented the structure from collapsing. In generally, the core-shell grained Li4SiO4 pebbles by solidification of suspension, as an efficient CO2 ceramic adsorbent, will have great application potential in the field of high-temperature CO2 adsorption.
Li4SiO4在高温捕集CO₂方面具有广阔的前景。然而,传统的Li4SiO4粉末或鹅卵石吸附剂的吸附效率较低,循环稳定性一般。在本研究中,采用新型悬浮液凝固法制备了核-壳粒型Li4SiO4吸附剂卵石。表征了材料的相组成、显微组织、破碎载荷和比表面积。并对其动态和循环吸附/解吸性能进行了研究。核壳粒状Li4SiO4鹅卵石在20次 循环中表现出优异的动态吸附容量为32.7 wt%,较高的循环吸附容量为29.8 ~ 32.4 wt%。DFT计算表明,粗孔岩心上Li和O空位的存在显著降低了扩散能垒,提高了CO2吸附能力。此外,致密的外壳防止了结构的倒塌。总体而言,经悬浮液固化而成的核壳粒状Li4SiO4鹅卵石作为一种高效的CO2陶瓷吸附剂,在高温CO2吸附领域将具有很大的应用潜力。
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引用次数: 0
Tailoring electronic and interfacial synergy in Cu-FeGa/Al2O3 for direct CO2 hydrogenation to ethanol Cu-FeGa/Al2O3中的电子和界面协同作用直接将CO2加氢成乙醇
IF 15.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-10 DOI: 10.1016/j.cej.2026.173969
Shiquan Huang, Ling Fang, Siling Luo, Hao Deng, Tomas Ramirez Reina, Guangting Zou, Qing Liu, Rongbin Zhang, Maohong Fan, Jinshu Tian, Gang Feng, Runping Ye
Chemical CO2 recycling via direct CO2 hydrogenation to ethanol represents a forward-looking route to curb greenhouse gases emissions while simultaneously alleviating the pressure from fossil fuel extraction and consumption. However, this is a complex chemical process whose successful implementation requires a careful trade-off among its key reaction steps: CO2 activation, selective CC coupling, and hydrogenation termination. Achieving optimal ethanol synthesis requires a balance of surface intermediates and promoting CC coupling, as indicated by thermodynamic and kinetic constraints. Herein, we have developed an efficient FeGa-doped Cu/Al2O3 catalyst prepared by the sol-gel method, achieving a space-time yield of 1.48 mmol·gcat−1·h−1 for ethanol. The Al2O3 support could disperse Cu active sites and generate oxygen vacancies for CO2 activation. Furthermore, Fe doping and Ga modification synergistically enhance both CC coupling capability and the non-dissociative CO activation ability of the Cu/Al2O3 catalyst, ultimately boosting CO2 conversion to ethanol. In-situ DRIFTS spectra reveal a potential catalytic mechanism for ethanol formation: CHx species couple with non-dissociated CO at the Cu-FeGaOx interface, followed by hydrogenation to ethanol. Overall, this work proposes a dual-promoter strategy that incorporates both Fe and Ga in a multi-competent Cu-based formulation, offering a novel approach to designing tunable catalysts for low-carbon ethanol synthesis.
通过直接将二氧化碳加氢转化为乙醇来回收化学二氧化碳,这是一条具有前瞻性的途径,既能抑制温室气体排放,又能减轻化石燃料开采和消耗带来的压力。然而,这是一个复杂的化学过程,其成功实施需要在其关键反应步骤之间进行谨慎的权衡:CO2活化,选择性CC偶联和氢化终止。如热力学和动力学约束所示,实现最佳的乙醇合成需要表面中间体的平衡和促进CC耦合。本文采用溶胶-凝胶法制备了fega掺杂Cu/Al2O3催化剂,对乙醇的时空产率为1.48 mmol·gcat−1·h−1。Al2O3载体可以分散Cu的活性位点,并产生氧空位进行CO2活化。此外,Fe掺杂和Ga修饰协同增强了Cu/Al2O3催化剂的CC偶联能力和非解离CO活化能力,最终促进了CO2转化为乙醇。原位漂移光谱揭示了乙醇形成的潜在催化机制:CHx与未解离的CO在Cu-FeGaOx界面偶联,然后加氢成乙醇。总的来说,这项工作提出了一种双启动子策略,将Fe和Ga结合在多活性cu基配方中,为设计低碳乙醇合成的可调催化剂提供了一种新方法。
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引用次数: 0
Fluorinated dynamic imine-based porous materials with excellent hydrophobicity and closed-loop recycling 具有优异疏水性和闭环回收的氟化动态亚胺基多孔材料
IF 15.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-10 DOI: 10.1016/j.cej.2026.173959
Wei Hong, Ping Yu, Haiyue Wang, Changyi You, Hongfei He, Hongying Qiu, Ruiqiang Ding, Guanxiang Ma, Bin Yu
{"title":"Fluorinated dynamic imine-based porous materials with excellent hydrophobicity and closed-loop recycling","authors":"Wei Hong, Ping Yu, Haiyue Wang, Changyi You, Hongfei He, Hongying Qiu, Ruiqiang Ding, Guanxiang Ma, Bin Yu","doi":"10.1016/j.cej.2026.173959","DOIUrl":"https://doi.org/10.1016/j.cej.2026.173959","url":null,"abstract":"","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"99 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic integration of oil-mediated adhesion and post-crosslinking imprinting technology for surface imprinted polymers to precision separation of 2′-deoxyadenosine 表面印迹聚合物的油介导黏附和后交联印迹技术协同集成以精确分离2 ' -脱氧腺苷
IF 15.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-10 DOI: 10.1016/j.cej.2026.173960
Zhuangxin Wei, Tao Wang, Pan Wang, Jianming Pan
{"title":"Synergistic integration of oil-mediated adhesion and post-crosslinking imprinting technology for surface imprinted polymers to precision separation of 2′-deoxyadenosine","authors":"Zhuangxin Wei, Tao Wang, Pan Wang, Jianming Pan","doi":"10.1016/j.cej.2026.173960","DOIUrl":"https://doi.org/10.1016/j.cej.2026.173960","url":null,"abstract":"","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"16 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bioinspired reaction engineering of CO2 mineralization assisted by tannic acid and ultrasonication 单宁酸与超声辅助下CO2矿化的生物激发反应工程
IF 15.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-10 DOI: 10.1016/j.cej.2026.173601
Leila Shahriari, Tyrus Antonson, Sang Eon Han, Sang M. Han, Maryam Hojati, Sungjin Kim
Carbon dioxide (CO2) mineralization offers a promising strategy to convert waste carbon into valuable carbonate feedstocks. Practical industrial implementation, however, requires precise reaction engineering to optimize efficiency while controlling particle morphology and polymorphism. We present a systematically designed reaction-engineering framework that elucidates the mechanistic controls governing catechol-mediated CO2 mineralization, inspired by biomineralization processes in marine environments, enabling tunable control over calcium carbonate (CaCO3) phase, morphology, and particle size. Within this framework, we integrate tannic acid (TA) and ultrasonic irradiation to enhance reaction kinetics and CO2 utilization. The combined use of TA and ultrasonication enhances the product yield by up to ∼300% compared with the control without polyphenol and ultrasonication. The improvement is attributed to the Ca-binding of TA, which accelerates nucleation and stabilizes the metastable vaterite phase, along with ultrasound-induced improvements in CO2 dissolution and mass transfer. Under these conditions, uniform spherical vaterite particles with diameters of 1–2 μm are produced as a result of intensified nucleation, enhanced CO2 dissolution, and the generation of smaller CO2 bubbles that serve as nucleation templates. These findings highlight a bioinspired organic-inorganic reaction engineering framework for scalable, efficient CO2 utilization toward sustainable manufacturing applications.
二氧化碳矿化提供了一种很有前途的策略,将废碳转化为有价值的碳酸盐原料。然而,实际的工业应用需要精确的反应工程来优化效率,同时控制颗粒的形态和多态性。我们提出了一个系统设计的反应工程框架,阐明了儿茶酚介导的二氧化碳矿化的机制控制,受到海洋环境中生物矿化过程的启发,实现了对碳酸钙(CaCO3)相、形态和粒径的可调控制。在这个框架内,我们将单宁酸(TA)和超声波照射结合起来,以提高反应动力学和二氧化碳利用。与不加多酚和超声处理的对照相比,TA和超声处理的联合使用使产物收率提高了约300%。这种改善归因于TA的ca结合,它加速了成核并稳定了亚稳水晶石相,同时超声波诱导的CO2溶解和传质改善。在此条件下,形成直径1 ~ 2 μm的均匀球形水晶石颗粒,这主要是由于成核增强、CO2溶解增强以及作为成核模板的CO2小气泡的产生。这些发现突出了生物启发的有机-无机反应工程框架,可扩展,高效利用二氧化碳,实现可持续制造应用。
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引用次数: 0
A biomimetic nanozyme enabling prolonged blood circulation for precise Theranostics in hyperuricemia and gouty arthritis 一种能延长血液循环的仿生纳米酶,用于高尿酸血症和痛风性关节炎的精确治疗
IF 15.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-10 DOI: 10.1016/j.cej.2026.173944
Lujie Yu, Qin Liu, Shutong Wu, Jian Zhang, Lin Chen, Huifang Hao, Mingxin Zhao, Chunmei Jiang, Weiwei Zhang, Ziliang Zheng, Ruiping Zhang
Gouty arthritis (GA), caused by monosodium urate crystal deposition in the context of persistent hyperuricemia, remains difficult to treat due to the inability of conventional therapies to simultaneously control uric acid (UA) levels, oxidative stress, and inflammation. To overcome this, we develop a biomimetic nanozyme composed of AuPt bimetallic nanozymes cloaked with erythrocyte membrane (AuPt@EM). It integrates prolonged circulation with cascade enzyme activities to achieve systemic UA reduction, local crystal clearance, and modulation of the inflammatory hypoxic microenvironment. AuPt@EM exhibits superoxide dismutase-like and catalase-like activities, efficiently scavenging ROS and generating oxygen, thereby amplifying its uricase-like activity to sustainably reduce UA. This nanozyme reduces ROS, suppresses the PI3K/AKT/HIF-1α pathway, and promotes HIF-1α degradation, which reprograms macrophages from the pro-inflammatory M1 phenotype toward the anti-inflammatory M2 phenotype. In vivo, AuPt@EM facilitates crystal clearance, alleviates joint inflammation, and preserves cartilage integrity. Moreover, it restores systemic immune balance by elevating IL-10 while decreasing IL-1β and IL-6. This study establishes an integrated therapeutic paradigm that combines UA level control, crystal dissolution, and inflammatory hypoxic microenvironment modulation, offering a promising strategy for precise and effective intervention in hyperuricemia and gouty arthritis.
痛风性关节炎(GA)是在持续性高尿酸血症背景下由尿酸钠晶体沉积引起的,由于常规疗法无法同时控制尿酸(UA)水平、氧化应激和炎症,因此仍然难以治疗。为了克服这一点,我们开发了一种由红细胞膜包裹的AuPt双金属纳米酶组成的仿生纳米酶(AuPt@EM)。它将延长循环与级联酶活性结合起来,实现全身UA还原、局部晶体清除和炎症性缺氧微环境的调节。AuPt@EM表现出类似超氧化物歧化酶和过氧化氢酶的活性,能够有效清除ROS并产生氧气,从而增强其类似尿酸酶的活性,从而持续降低UA。这种纳米酶减少ROS,抑制PI3K/AKT/HIF-1α通路,促进HIF-1α降解,使巨噬细胞从促炎M1表型重编程为抗炎M2表型。在体内,AuPt@EM促进晶体清除,减轻关节炎症,并保持软骨完整性。此外,它通过提高IL-10,降低IL-1β和IL-6来恢复全身免疫平衡。本研究建立了一种结合UA水平控制、晶体溶解和炎症性缺氧微环境调节的综合治疗模式,为精确有效地干预高尿酸血症和痛风性关节炎提供了一种有希望的策略。
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引用次数: 0
Driving superionic transport in high-entropy oxide/fluorite heterostructure electrolytes for boosting fuel cell performance 驱动高熵氧化物/萤石异质结构电解质中的超离子传输以提高燃料电池性能
IF 15.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-10 DOI: 10.1016/j.cej.2026.174004
Yanbei Liu, Ruoming Wang, Xiao Lin, Taimoor Raza, Muhammad Qadeer, Wen-Feng Lin, Sining Yun
Compared with conventional ionic electrolyte-based solid oxide fuel cells, mixed ionic electronic conductor (MIEC) electrolytes enable high power at relatively low temperatures. Here, we design a hybrid ionic-electronic conductor electrolyte based on p-n heterojunctions: a layered perovskite-type high-entropy oxide (La0.2Pr0.2Nd0.2Sm0.2Sr0.2)2CuO4 (HEO) as the p-type semiconductor combined with the n-type fluorite Nd0.05Ce0.95O2-δ (NDC). This study marks their first application in fuel-cell electrolyte composites. The multielemental composition of the HEO tailors the electronic structure to stabilize the interfacial charge dynamics and enhance ionic conduction via lattice disorder, which reduces the migration barriers. Integration with NDC induces band bending at heterogeneous interfaces and synergistically improves the carrier dynamics. In this heterostructure, the built-in electric field generated by the Fermi-level alignment suppresses electron penetration while driving ion/proton transport; concurrently, interfacial charge compensation induces oxygen vacancy formation, synergistically enhancing superionic conduction. Consequently, systematic optimization of HEO-NDC mass ratios combined with multiscale characterization identifies the 3HEO:7NDC composite as optimal, achieving a peak power density of 995.3 mW cm−2 with an open-circuit voltage (OCV) of 1.067 V at 550 °C and approximately 50-h stability. This study demonstrates a new strategy for the development of HEO-based hybrid conductor electrolytes.
与传统的基于离子电解质的固体氧化物燃料电池相比,混合离子电子导体(MIEC)电解质可以在相对较低的温度下实现高功率。本文设计了一种基于p-n异质结的混合离子电子导体电解质:层状钙钛矿型高熵氧化物(La0.2Pr0.2Nd0.2Sm0.2Sr0.2)2CuO4 (HEO)作为p型半导体与n型荧石Nd0.05Ce0.95O2-δ (NDC)结合。这项研究标志着它们在燃料电池电解质复合材料中的首次应用。HEO的多元素组成调整了电子结构,稳定了界面电荷动力学,并通过晶格无序增强了离子传导,从而降低了迁移障碍。与NDC的集成诱导了非均质界面的带弯曲,并协同改善了载流子动力学。在这种异质结构中,费米能级排列产生的内置电场抑制电子穿透,同时驱动离子/质子输运;同时,界面电荷补偿诱导氧空位形成,协同增强超离子传导。因此,系统优化HEO-NDC质量比并结合多尺度表征,确定3HEO:7NDC复合材料是最佳的,在550°C下实现峰值功率密度995.3 mW cm−2,开路电压(OCV)为1.067 V,稳定性约为50 h。本研究为开发heo基混合导体电解质提供了新的思路。
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引用次数: 0
Zincophilic ultrathin Zn metal anode enabling uniform deposition and corrosion suppression in aqueous zinc ion batteries 在水性锌离子电池中实现均匀沉积和抑制腐蚀的亲锌超薄锌金属阳极
IF 15.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2026-02-10 DOI: 10.1016/j.cej.2026.174034
Jong Chan Choi, Da-Eun Hyun, Jae Sol Sim, Inuk Lee, Yun Chan Kang
Zn metal anodes are promising for rechargeable aqueous zinc-ion batteries; however, practical deployment requires the use of thin Zn layers to preserve the energy density and suppress dendrite growth and corrosion driven by the hydrogen evolution reaction (HER). Herein, an ultrathin Zn anode (~9 μm) is constructed with a zincophilic ZnSe layer with a thickness of approximately 100 nm. Electroplating is introduced to form the Zn anode, the deposition time is adjusted to control the thickness, and the resulting thin layer exhibits improved mechanical flexibility. Density functional theory and COMSOL analyses indicate that the ZnSe interphase facilitates interfacial supply of Zn2+, consistent with the observed uniform plating/stripping and low interfacial resistance. ZnSe treatment limits the direct contact between the electrolyte and Zn metal and increases the Zn (002) texture, thereby suppressing HER-induced corrosion. Consequently, when paired with V2O5 cathodes under a low N/P ratio of 2.6 in full cells, the anode maintains a capacity of 160 mAh g−1 for more than 1500 cycles at 5 A g−1. In contrast to surface treatment of thick commercial Zn foil, this scalable interfacial engineering strategy for ultrathin Zn metal anodes enables high energy density and long cycle life in practical cells.
锌金属阳极在可充电水性锌离子电池中具有广阔的应用前景;然而,实际部署需要使用薄锌层来保持能量密度,抑制析氢反应(HER)驱动的枝晶生长和腐蚀。本文用厚度约为100 nm的亲锌ZnSe层构建了超薄Zn阳极(~9 μm)。采用电镀法制备锌阳极,通过调整沉积时间来控制锌阳极的厚度,得到的锌阳极薄层具有更好的机械柔韧性。密度泛函理论和COMSOL分析表明,ZnSe界面相有利于Zn2+的界面供应,与观察到的均匀镀/剥离和低界面电阻一致。ZnSe处理限制了电解液与Zn金属之间的直接接触,增加了Zn(002)织构,从而抑制了her引起的腐蚀。因此,当在全电池中与低N/P比为2.6的V2O5阴极配对时,阳极在5a g−1下保持超过1500次 循环的容量为160 mAh g−1。与厚商业锌箔的表面处理相比,这种用于超薄锌金属阳极的可扩展界面工程策略可在实际电池中实现高能量密度和长循环寿命。
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