Advanced Powder Materials最新文献_第5页

Interfacial electric field effects enhance the kinetics and stability of magnesium metal anodes for rechargeable magnesium batteries 界面电场效应增强了可充电镁电池金属镁阳极的动力学和稳定性

Advanced Powder Materials

Pub Date : 2025-08-21 DOI: 10.1016/j.apmate.2025.100335

Qi Sun , Shaohua Luo , Yicheng Lin , Xin Yan , Rui Huang , Qiuyue Liu , Shengxue Yan , Xiaoping Lin

Rechargeable magnesium batteries (RMBs) are considered promising candidates for next–generation energy storage systems due to their high theoretical capacity. However, the non–uniform deposition/stripping behavior of Mg metal hinders the practical application of RMBs. This study demonstrates that the designed interfacial electric field effect, driven by a copper phthalocyanine (CuPc) conductive interlayer, enhances the kinetics and stability of the Mg anode. In situ electrochemical impedance spectroscopy coupled with distribution of relaxation times analysis reveals that the highly delocalized electron cloud network of CuPc establishes a low-energy-barrier electron transport pathway, significantly reducing charge transfer resistance. Electrochemical characterization and density functional theory calculations indicate that the interfacial electric field effect effectively improves interfacial Mg²⁺ diffusion by enhancing electron delocalization and reducing the Mg²⁺ migration energy barrier. Furthermore, finite element simulations substantiate that the interfacial electric field imparts uniform interfacial charge distribution and homogeneous Mg deposition during plating/stripping processes. Consequently, the symmetric cell with CuPc@Mg achieves an ultra-long lifetime (1,400 h at 5 mA cm⁻²) and a high Coulombic efficiency (99.3%). Furthermore, the CuPc@Mg||Mo₆S₈ cell achieves high capacity retention (92%). This work highlights the potential of metal phthalocyanines in stabilizing Mg anodes.

可充电镁电池（RMBs）由于具有较高的理论容量，被认为是下一代储能系统的有前途的候选者。然而，Mg金属的不均匀沉积/剥离行为阻碍了RMBs的实际应用。研究表明，在酞菁铜（CuPc）导电中间层的驱动下，所设计的界面电场效应增强了镁阳极的动力学和稳定性。原位电化学阻抗谱结合弛豫时间分布分析表明，CuPc的高度离域电子云网络建立了低能垒电子传递途径，显著降低了电荷转移阻力。电化学表征和密度泛函理论计算表明，界面电场效应通过增强电子离域和降低Mg2+迁移能垒有效地改善了界面Mg2+的扩散。此外，有限元模拟证实了界面电场使镀/剥离过程中界面电荷分布均匀，Mg沉积均匀。因此，含有CuPc@Mg的对称电池实现了超长寿命（在5 mA cm−2下1400 h）和高库仑效率（99.3%）。此外，CuPc@Mg||Mo6S8电池实现了高容量保持（92%）。这项工作突出了金属酞菁在稳定镁阳极方面的潜力。

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引用次数: 0

Machine learning application in thermal CO2 hydrogenation: Catalyst design, process optimization, and mechanism insights 机器学习在CO2热加氢中的应用：催化剂设计、工艺优化和机理洞察

Advanced Powder Materials

Pub Date : 2025-08-20 DOI: 10.1016/j.apmate.2025.100333

Rasoul Salami , Tianlong Liu , Xue Han , Ying Zheng

The growing demand for carbon neutrality has heightened the focus on CO₂ hydrogenation as a viable strategy for transforming carbon dioxide into valuable chemicals and fuels. Advanced machine learning (ML) approaches integrate materials science with artificial intelligence, enabling scientists to identify hidden patterns in datasets, make informed decisions, and reduce the need for labor-intensive, repetitive experimentation. This review provides a comprehensive overview of ML applications in the thermocatalytic hydrogenation of CO₂. Following an introduction to ML tools and workflows, various ML algorithms employed in CO₂ hydrogenation are systematically categorized and reviewed. Next, the application of ML in catalyst discovery is discussed, highlighting its role in identifying optimal compositions and structures. Then, ML-driven strategies for process optimization, particularly in enhancing CO₂ conversion and product selectivity, are examined. Studies modeling descriptors, spanning catalyst properties and reaction conditions, to predict catalytic performance are analyzed. Consequently, ML-based mechanistic studies are reviewed to elucidate reaction pathways, identify key intermediates, and optimize catalyst performance. Finally, key challenges and future perspectives in leveraging ML for advancing CO₂ hydrogenation research are presented.

对碳中和日益增长的需求使人们更加关注二氧化碳加氢，将其作为一种将二氧化碳转化为有价值的化学品和燃料的可行策略。先进的机器学习（ML）方法将材料科学与人工智能相结合，使科学家能够识别数据集中隐藏的模式，做出明智的决策，并减少对劳动密集型重复实验的需求。本文综述了ML在CO2热催化加氢中的应用。在介绍机器学习工具和工作流程之后，系统地对CO2氢化中采用的各种机器学习算法进行了分类和审查。其次，讨论了机器学习在催化剂发现中的应用，重点介绍了机器学习在确定最佳组成和结构方面的作用。然后，机器学习驱动的工艺优化策略，特别是在提高二氧化碳转化和产品选择性，进行了检查。研究建模描述符，跨越催化剂性质和反应条件，以预测催化性能。因此，回顾了基于ml的机理研究，以阐明反应途径，确定关键中间体，并优化催化剂性能。最后，提出了利用机器学习推进二氧化碳加氢研究的关键挑战和未来前景。

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引用次数: 0

In-situ alloying interface inducing Zn(002) texture towards stable high-utilization zinc anodes 原位合金化界面诱导Zn（002）织构形成稳定的高利用率锌阳极

Advanced Powder Materials

Pub Date : 2025-08-09 DOI: 10.1016/j.apmate.2025.100332

Xiancheng Bu , Mingzhu Li , Zhexuan Liu , Shuquan Liang , Guozhao Fang

Aqueous zinc ion batteries (AZIBs) have emerged as a promising energy storage technology due to their high safety and low cost. However, the practical application of AZIBs is severely hindered by unstable Zn anodes especially under high depth of discharge (DOD). This study proposes an in-situ interface alloying engineering based on Ce³⁺ additive to regulate Zn deposition behaviors, significantly enhancing the cycling stability and reversibility of Zn anodes. Ce³⁺ undergoes in-situ formation of ZnCe alloy on Zn anode interface, inducing preferential deposition of dense Zn (002) plane and effectively mitigating concentration polarization. Zn//Zn symmetric cells with Ce³⁺ electrolytes achieve stable cycling for 3000 h at 1 mA cm⁻² and deliver a cumulative capacity of 27 Ah cm⁻² (5400 h) at a high current density of 5 mA cm⁻². Even under a high DOD of 68.4%, it maintains stable cycling for 420 h. Full cells with a low Negative/Positive capacity (N/P) ratio of 4.30 and high cathode loading of 10 mg cm⁻² can stably cycle over 1000 cycles at 2 A g⁻¹. Furthermore, an 80 mAh-level pouch cell with N/P ratio of 4.68 retains 85% capacity after 100 cycles. This article provides new insights into the interfacial engineering for practical AZIBs.

水锌离子电池（azib）由于其高安全性和低成本的优点，已成为一种很有前途的储能技术。然而，锌阳极的不稳定性严重阻碍了azib的实际应用，特别是在高放电深度（DOD）下。本研究提出了一种基于Ce3+添加剂的原位界面合金化工程，以调节Zn沉积行为，显著提高Zn阳极的循环稳定性和可逆性。Ce3+在Zn阳极界面上原位形成ZnCe合金，诱导致密Zn（002）平面优先沉积，有效缓解浓度极化。采用Ce3+电解质的Zn/ Zn对称电池在1 mA cm - 2下可稳定循环3000小时，在5 mA cm - 2的高电流密度下可提供27 Ah cm - 2 （5400 h）的累积容量。即使在68.4%的高DOD下，也能保持420 h的稳定循环。负/正容量（N/P）比为4.30，阴极负载为10 mg cm−2，在2 a g−1下可稳定循环1000次以上。此外，一个80 mah级的袋状电池，N/P比为4.68，在100次循环后仍保持85%的容量。本文为实际azib的接口工程提供了新的见解。

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引用次数: 0

Machine learning-driven insights into the microstructure and properties of high-entropy alloys 机器学习驱动的高熵合金微观结构和性能研究

Advanced Powder Materials

Pub Date : 2025-08-05 DOI: 10.1016/j.apmate.2025.100331

Xiaoyi Zhang , Wenhan Zhou , Xiang Li , Tong Xu , Yongzhen Yu , Lei Zheng , Guanhua Jin , Shengli Zhang

High entropy alloys (HEAs) have recently become a popular category of alloys, composed of five or more elements. These alloys are of particular interest in the field of materials due to their unique structure and excellent properties. However, the multi-component nature of these alloys poses challenges to traditional calculation methods, necessitating the development of alternative approaches for their analysis. Machine learning, a branch of artificial intelligence, has emerged as a promising solution to address the complexity inherent in the composition and structure of HEAs. The present review focuses on the fundamental definition and process of machine learning and its application in the research field of HEAs. The primary focus of this research field is the prediction of phase structure, hardness, strength, thermodynamic properties, and catalytic properties. In addition, future perspectives on the challenges in this research area are also presented.

高熵合金（High entropy alloys, HEAs）是由五种或五种以上元素组成的一种新型合金。这些合金由于其独特的结构和优异的性能而在材料领域受到特别关注。然而，这些合金的多组分性质对传统的计算方法提出了挑战，需要开发替代方法来分析它们。机器学习作为人工智能的一个分支，已经成为解决高等教育系统组成和结构固有复杂性的一个有前途的解决方案。本文综述了机器学习的基本定义、过程及其在高等教育领域的应用。该研究领域的主要重点是相结构、硬度、强度、热力学性质和催化性质的预测。此外，还对该研究领域面临的挑战提出了未来的展望。

引用次数: 0

Single-atom catalysts supported on atomically thin materials for water splitting 单原子催化剂支持的原子薄材料水分解

Advanced Powder Materials

Pub Date : 2025-07-24 DOI: 10.1016/j.apmate.2025.100330

Xiaomin Chen , Ding Yuan , Chao Rong , Chao Wu , Porun Liu , Hua Kun Liu , Dingsheng Wang , Shi Xue Dou , Yuhai Dou

Single-atom catalysts (SACs) have demonstrated exceptional performance in electrocatalytic water splitting, owing to their maximized atomic utilization efficiency and superior reaction kinetics. The incorporation of SACs typically depends on robust metal-support interactions, which stabilize the single atoms on the support through various unsaturated chemical sites or spatial confinement. A critical challenge lies in precisely modulating the electronic structure and coordination environment of metal atoms. However, current research primarily focuses on single-atom metals, often neglecting the significant role of support materials in SACs. Two-dimensional (2D) atomically thin materials (ATMs) possess unique physicochemical properties and tunable reaction environments, which can modulate catalytic performance via metal-support interactions, positioning them as promising platforms for SAC loading. This paper reviews the recent advancements and the current status of SACs supported on 2D ATMs (SACs@ATMs). The structural design theory and synthesis strategies of SACs@ATMs are systematically discussed. The significance of advanced characterization techniques in elucidating the coordination environment and metal-support interactions is highlighted. Additionally, the reaction mechanisms and applications of SACs in electrocatalytic water splitting are summarized. Finally, the future challenges and opportunities for SACs@ATMs are outlined. This paper aims to provide insights and guidance for the rational design of SACs@ATMs with high-performance electrocatalytic water splitting capabilities.

单原子催化剂（SACs）由于其最大的原子利用率和优异的反应动力学特性，在电催化水分解中表现出优异的性能。SACs的加入通常依赖于强大的金属-载体相互作用，这种相互作用通过各种不饱和化学位点或空间限制来稳定载体上的单个原子。一个关键的挑战在于精确调制金属原子的电子结构和配位环境。然而，目前的研究主要集中在单原子金属上，往往忽视了支撑材料在sac中的重要作用。二维（2D）原子薄材料（atm）具有独特的物理化学性质和可调的反应环境，可以通过金属支撑相互作用调节催化性能，使其成为有前途的SAC装载平台。本文综述了二维atm （SACs@ATMs）上支持的sac的最新进展和现状。系统地论述了SACs@ATMs的结构设计理论和综合策略。强调了先进表征技术在阐明配位环境和金属-载体相互作用方面的意义。综述了SACs的反应机理及其在电催化水分解中的应用。最后，概述了SACs@ATMs未来的挑战和机遇。本文旨在为具有高效电催化水分解能力的SACs@ATMs的合理设计提供见解和指导。

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引用次数: 0

High-entropy type Fe-Ni-P-O-C amorphous Nanospheres: Remarkable Fe-ion migration induced efficient surface reconstruction for oxygen evolution reaction 高熵型Fe-Ni-P-O-C非晶纳米球：显著的铁离子迁移诱导出氧反应的高效表面重构

Advanced Powder Materials

Pub Date : 2025-07-22 DOI: 10.1016/j.apmate.2025.100329

Shiliu Yang , Xinhe Liu , Xunlu Wang , Yan Lin , Sina Cheng , Hongyang Gao , Fan Zhang , Li Li , Jiabiao Lian , Ulla Lassi , Ruguang Ma

Amorphous transition metal compounds (a-TMC) become one of the most promising pre-catalysts toward oxygen evolution reaction (OER) due to their high-entropy nature and flexible self-reconstruction to highly active derivatives. However, the loosen bonds inside the amorphous structure make it an electronic insulator with unstable structure. Here, monodispersed Ni²⁺-phytate nanospheres implanted by Fe³⁺ ions (NS_FeNiPA) were firstly prepared and subsequently transferred into homogeneous high-entropy type Fe-Ni-P-O-C amorphous nanospheres (CNS_FeNiPO). It is shown that the CNS_FeNiPO presents robust structure and remarkable Fe ions migration during potential-driven activation process, which benefits efficient surface reconstruction and spherical morphology preservation. The CNS_FeNiPO with low mass loading of 0.1 mg/cm² could deliver small overpotential of 270 mV at 10 mA cm⁻² and almost 100% retention of the initial current density after 10 h test. The improved electrocatalytic activity is attributed to the boosted electron transfer from Ni sites to O-containing intermediates by introduction of Fe and P atoms. Moreover, rechargeable Zn-air battery with CNS_FeNiPO + Pt/C could achieve lower charge potential platform and better cycling performance than that with commercial RuO₂+Pt/C. This work provides new insights into the design and understanding of high-entropy amorphous pre-catalysts toward OER.

非晶态过渡金属化合物（a-TMC）因其高熵性质和可灵活地自重构成高活性衍生物而成为最有前途的析氧反应（OER）预催化剂之一。然而，非晶结构内部的松散键使其成为结构不稳定的电子绝缘体。本文首先制备了Fe3+离子注入的单分散Ni2+-植酸纳米球（NSFeNiPA），然后将其转化为均匀的高熵型Fe-Ni-P-O-C非晶纳米球（CNSFeNiPO）。结果表明，在电位驱动活化过程中，CNSFeNiPO具有坚固的结构和显著的铁离子迁移，有利于有效的表面重建和球形形态保存。在0.1 mg/cm2的低质量负载下，CNSFeNiPO在10 mA cm - 2下可以提供270 mV的小过电位，并且在10 h后几乎保持了100%的初始电流密度。电催化活性的提高是由于Fe和P原子的引入促进了电子从Ni位点向含o中间体的转移。与商用RuO2+Pt/C相比，CNSFeNiPO +Pt/C可充电锌空气电池具有更低的充电电位平台和更好的循环性能。这项工作为设计和理解面向OER的高熵非晶预催化剂提供了新的见解。

{"title":"High-entropy type Fe-Ni-P-O-C amorphous Nanospheres: Remarkable Fe-ion migration induced efficient surface reconstruction for oxygen evolution reaction","authors":"Shiliu Yang , Xinhe Liu , Xunlu Wang , Yan Lin , Sina Cheng , Hongyang Gao , Fan Zhang , Li Li , Jiabiao Lian , Ulla Lassi , Ruguang Ma","doi":"10.1016/j.apmate.2025.100329","DOIUrl":"10.1016/j.apmate.2025.100329","url":null,"abstract":"<div><div>Amorphous transition metal compounds (<em>a</em>-TMC) become one of the most promising pre-catalysts toward oxygen evolution reaction (OER) due to their high-entropy nature and flexible self-reconstruction to highly active derivatives. However, the loosen bonds inside the amorphous structure make it an electronic insulator with unstable structure. Here, monodispersed Ni<sup>2+</sup>-phytate nanospheres implanted by Fe<sup>3+</sup> ions (NS<sub>FeNiPA</sub>) were firstly prepared and subsequently transferred into homogeneous high-entropy type Fe-Ni-P-O-C amorphous nanospheres (CNS<sub>FeNiPO</sub>). It is shown that the CNS<sub>FeNiPO</sub> presents robust structure and remarkable Fe ions migration during potential-driven activation process, which benefits efficient surface reconstruction and spherical morphology preservation. The CNS<sub>FeNiPO</sub> with low mass loading of 0.1 mg/cm<sup>2</sup> could deliver small overpotential of 270 mV at 10 mA cm<sup>−2</sup> and almost 100% retention of the initial current density after 10 h test. The improved electrocatalytic activity is attributed to the boosted electron transfer from Ni sites to O-containing intermediates by introduction of Fe and P atoms. Moreover, rechargeable Zn-air battery with CNS<sub>FeNiPO</sub> + Pt/C could achieve lower charge potential platform and better cycling performance than that with commercial RuO<sub>2</sub>+Pt/C. This work provides new insights into the design and understanding of high-entropy amorphous pre-catalysts toward OER.</div></div>","PeriodicalId":7283,"journal":{"name":"Advanced Powder Materials","volume":"4 5","pages":"Article 100329"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144770793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Submonolayered Ru-modified Pd mesoporous nanosheets as multifunctional electrocatalyst for hydrogen evolution and alcohol oxidation reactions 亚单层ru修饰Pd介孔纳米片作为析氢和醇氧化反应的多功能电催化剂

Advanced Powder Materials

Pub Date : 2025-07-09 DOI: 10.1016/j.apmate.2025.100320

Xinran Jiao , Chaoqun Ma , Biao Huang , Dengke Zhao , Fukai Feng , Sumei Han , Nailiang Yang , Qipeng Lu , Yiyao Ge , Qian Xu

The structural modulation of metal-based heterostructure plays a vital role in achieving enhanced performances for highly efficient electrocatalysis. Here we design submonolayered Ru-modified Pd mesoporous nanosheets (Pd-Ru MNSs) with the exposure of both Pd and Ru active sites as well as the high atomic utilization of two-dimensional structure. The obtained Pd-Ru MNSs can act as a highly efficient multifunctional catalyst for hydrogen evolution reaction (HER) and alcohol oxidation reactions including ethylene glycol oxidation (EGOR) and ethanol oxidation (EOR), offering new opportunities towards the alcohol oxidation assisted hydrogen production. Specifically, Pd-Ru MNSs demonstrate excellent HER performance in alkaline electrolyte, requiring an overpotential of only 16 mV to reach 10 mA cm⁻², significantly outperforming Pd mesoporous nanosheets and commercial catalysts. Density functional theory calculations reveal that the Ru sites in Pd-Ru MNSs could facilitate the water adsorption, accelerate the water dissociation, and optimize the hydrogen desorption, leading to the superior HER activity. Pd-Ru MNSs also exhibit high mass activities of 11.19 A mg⁻¹_Pd for EGOR and 8.84 A mg⁻¹_Pd for EOR, which is 7.8 and 9.6 times than that of commercial Pd/C, respectively. The EGOR reaction pathway over Pd-Ru MNSs was further investigated by using in situ Fourier-transform infrared spectroscopy.

金属基异质结构的结构调制对于提高高效电催化性能起着至关重要的作用。在这里，我们设计了亚单层的Ru修饰Pd介孔纳米片（Pd-Ru MNSs），同时暴露了Pd和Ru的活性位点，并且具有二维结构的高原子利用率。所制得的Pd-Ru MNSs可作为析氢反应（HER）和醇氧化反应（EGOR）、乙醇氧化（EOR）的高效多功能催化剂，为醇氧化辅助制氢提供了新的机遇。具体来说，Pd- ru MNSs在碱性电解质中表现出优异的HER性能，只需要16 mV的过电位就可以达到10 mA cm - 2，明显优于Pd介孔纳米片和商用催化剂。密度泛函理论计算表明，Pd-Ru MNSs中的Ru位点可以促进水吸附，加速水解离，优化氢脱附，从而使其具有较好的HER活性。Pd- ru MNSs的EGOR质量活性为11.19 A mg - 1Pd， EOR质量活性为8.84 A mg - 1Pd，分别是商业Pd/C的7.8倍和9.6倍。利用原位傅里叶变换红外光谱进一步研究了Pd-Ru MNSs上的EGOR反应途径。

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引用次数: 0

Second-phase composite engineering endows Gd3TaO7-based ceramic with broadband infrared radiation 二期复合工程使gd3tao7基陶瓷具有宽带红外辐射

Advanced Powder Materials

Pub Date : 2025-07-04 DOI: 10.1016/j.apmate.2025.100318

Enyu Xie , Shuqi Wang , Guoliang Chen , Yongchun Zou , Jianghong Zhang , Yaming Wang , Qingyuan Zhao , Zijian Peng , Junteng Yao , Jiahu Ouyang , Dechang Jia , Yu Zhou , Valentina L. Stolyarova

High-temperature infrared (IR) radiation materials with broadband high emissivity, low thermal conductivity, and high fracture toughness are urgently needed for radiative heat management. Here, we report a Gd₃TaO₇/GdFeO₃ composite ceramic that integrates a broadband (0.78–14 μm) high emissivity (close to 0.9), low thermal conductivity (1.62 W m⁻¹ K⁻¹), and fracture toughness (2.3 MPa m^1/2, close to YSZ). Through the introduction of second-phase GdFeO₃, many lattice distortions, multimode vibrations, and additional oxygen vacancies (O_v) contribute to an increase in the broad-band emissivity of the composite ceramics (especially in the 2.5–6 μm band, nearly 5 times greater than that of Gd₃TaO₇). This high IR emissivity significantly suppresses the elevated photonic thermal conductivity at high temperatures, resulting in ultralow thermal conductivity. Moreover, the stable atomic arrangement within the two phases contributed to the impressive high-temperature stability (1773 K, 200 h). The improved fracture toughness is attributed primarily to the presence of the second phase promoting crack tip deflection, bridging and branching, which prevent crack expansion. All the advantages render this second-phase composite strategy fully competitive in the development of a new generation of superhigh-temperature radiative heat management materials.

具有宽带高发射率、低导热系数和高断裂韧性的高温红外辐射材料是辐射热管理的迫切需要。在这里，我们报道了一种Gd3TaO7/GdFeO3复合陶瓷，它集成了宽带（0.78-14 μm）高发射率（接近0.9），低导热系数（1.62 W m−1 K−1）和断裂韧性（2.3 MPa m1/2，接近YSZ）。通过引入第二相GdFeO3，许多晶格畸变、多模振动和额外的氧空位（Ov）有助于提高复合陶瓷的宽带发射率（特别是在2.5-6 μm波段，几乎是Gd3TaO7的5倍）。这种高红外发射率显著抑制了高温下光子热导率的升高，导致超低热导率。此外，两相内稳定的原子排列有助于令人印象深刻的高温稳定性（1773 K, 200 h）。断裂韧性的提高主要是由于第二相的存在促进了裂纹尖端的挠曲、桥接和分支，从而阻止了裂纹的扩展。所有这些优点使这种第二阶段复合材料在新一代超高温辐射热管理材料的开发中具有充分的竞争力。

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引用次数: 0

Photo-assisted Li/Zn-air batteries and supercapacitors: material design, working mechanism and challenges 光辅助锂/锌空气电池和超级电容器：材料设计、工作机理和挑战

Advanced Powder Materials

Pub Date : 2025-06-27 DOI: 10.1016/j.apmate.2025.100316

Muhammad Arif , Xinyu Li , Zhaoming Fu , Yu Lin Zhong , Guangzhi Hu , Ting Zhu , Xiaobo Feng

In recent years, photo-powered energy storage devices have attracted considerable research attention due to their potential applications in smart electronics. In this review, we present a comprehensive summary of recent developments in two distinct but highly promising energy storage technologies, photo-assisted metal-air batteries and photo-supercapacitors. The section on metal-air batteries primarily describes the electrochemical performance of Zn-air and Li-air systems, innovative photo-electrode designs, and mechanisms that enhance oxygen evolution and reduction reactions. A brief discussion is also provided of other metal-air systems, including Mg, Fe, and Al. In contrast, the section on photo-supercapacitors explores recent advancements in light-driven charge storage, electrode materials, and device architectures, presenting a comparative performance analysis of materials such as metal oxides, sulfides, and perovskites. Various critical challenges, including material stability, efficiency under varying light conditions, and scalability, are also thoroughly examined. Despite their different working principles, both technologies hold great potential to increase energy efficiency and sustainability through the use of photo-assisted processes. The purpose of this review is to bridge existing knowledge gaps and propose future directions for research in these emerging fields.

近年来，光能储能器件因其在智能电子领域的潜在应用而引起了广泛的研究关注。在这篇综述中，我们全面总结了两种截然不同但极具前景的储能技术，光辅助金属-空气电池和光超级电容器的最新发展。金属-空气电池部分主要介绍了锌-空气和锂-空气系统的电化学性能，创新的光电极设计，以及增强氧释放和还原反应的机制。简要讨论了其他金属-空气系统，包括Mg、Fe和Al。相比之下，光超级电容器部分探讨了光驱动电荷存储、电极材料和器件架构方面的最新进展，并对金属氧化物、硫化物和钙钛矿等材料进行了性能比较分析。各种关键的挑战，包括材料的稳定性，在不同的光条件下的效率，和可扩展性，也进行了彻底的检查。尽管它们的工作原理不同，但这两种技术都有很大的潜力，可以通过使用光辅助工艺来提高能源效率和可持续性。这篇综述的目的是弥合现有的知识差距，并提出未来在这些新兴领域的研究方向。

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引用次数: 0

Accelerated sintering and microstructural regulation of tungsten powder compact by novel modulation of particle configuration 新型粒子结构调制对钨粉致密体的加速烧结及微观结构的调控

Advanced Powder Materials

Pub Date : 2025-06-24 DOI: 10.1016/j.apmate.2025.100317

Peng Hu , Yijie Gao , Hexiong Liu , Yunfei Yang , Qinqin Zhou , Jung-Sik Kim , Yaowu Hao , Jinshu Wang

Increasing the sintering rate of powder compact is a critical challenge of powder metallurgical materials, and adjusting component distribution in particles aggregate present significant effect on the microstructure of sintered product, especially for multi-phase compact with local heterogeneity. Here, a case study of W–Ni–Co powder compact was adopted to illustrate the novel strategy to enhance the sintering of multi-phase compact with desired microstructure by adjusting the particle configurations. The plasma synthesis route was developed for the first time to independently adjust the configurations of W–Ni–Co nanopowders with core-shell and homogeneous structures, which facilitates to ascertain the sintering response induced exclusively by particle configurations. Comparison on sintering response further indicates that core-shell powder presents greatly promoted sintering than homogeneous one, and full-dense and uniform compact with grain size of 1.37 μm was obtained by solid sintering, which is several to dozens of times smaller than that obtained by conventional liquid sintering. Theoretical and experimental Investigation on elemental immigration visualized the distinct mass diffusion behavior of powder compacts, and clarified the mass transport path promoted densification mechanism determined by powder configurations. Importantly, full-coherent phase interface induced superior strength and plasticity in alloy sintered using core-shell powder, which highlights the importance of microstructural regulation on improving the mechanical property that superior than most of previously reported tungsten heavy alloys. In summary, this work paves a new way for fast sintering of multi-phase compacts, and provides intrinsic understandings on densification mechanism of powder compact.

提高粉末压坯的烧结速率是粉末冶金材料面临的一个重要挑战，而调整颗粒聚集体中组分的分布对烧结产物的微观组织有重要影响，特别是对于具有局部非均匀性的多相压坯。本文以钨镍钴粉末致密体为例，阐述了通过调整颗粒结构来提高多相致密体烧结性能的新策略。首次建立了等离子体合成路线，可以独立调节核壳均质结构的W-Ni-Co纳米粉体的结构，从而确定了单粒子结构引起的烧结响应。烧结响应对比进一步表明，核壳粉末比均相粉末具有明显的烧结促进作用，固相烧结可获得晶粒尺寸为1.37 μm的致密均匀的致密体，比常规液相烧结可获得的致密体小几到几十倍。元素迁移的理论和实验研究揭示了粉末压实体不同的质量扩散行为，阐明了由粉末结构决定的质量传递路径促进致密化的机理。重要的是，全相干相界面诱导了核壳粉末烧结合金优异的强度和塑性，这突出了微观组织调节对提高合金力学性能的重要性，优于以往报道的大多数重钨合金。本研究为多相压块的快速烧结开辟了新途径，并对粉末压块的致密化机理有了更深入的认识。

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引用次数: 0