Pub Date : 2025-08-01DOI: 10.1016/j.matre.2025.100355
Min Liu , Chuyi Zhang , Yuzhe Ying , Yanyi Zhao , Zhuoya Zhao , Yansong Jia , Yubo Chen , Jianfeng Shi , Yang Li
Electrocatalytic carbon dioxide reduction (ECO2RR) serves as a promising approach for converting CO2 into energy-dense fuels and high-value chemicals, garnering substantial interest across academic and industrial sectors. Copper (Cu)-based electrocatalysts are widely acknowledged as highly effective for ECO2RR, primarily due to their optimal adsorption energy for ∗CO. Nonetheless, significant challenges remain to be addressed in transitioning Cu-based catalysts from research settings to industrial applications, including the low stability and unavoidable side reactions. This article aims to i) systematically examine the deactivation mechanisms of Cu-based catalysts, including changes in valence states, surface poisoning, and restructuring (agglomeration, dissolution, Ostwald ripening); ii) provide a timely overview of cutting-edge strategies to enhance the stability of Cu-based catalysts, such as ligand effects, heteroatom doping, support optimization, size effect, and restructuring; iii) highlight critical areas and prospective development directions that warrant further exploration to expedite the industrial adoption of Cu-based catalysts in ECO2RR.
{"title":"Optimization strategies for enhancing the stability of Cu-based catalysts","authors":"Min Liu , Chuyi Zhang , Yuzhe Ying , Yanyi Zhao , Zhuoya Zhao , Yansong Jia , Yubo Chen , Jianfeng Shi , Yang Li","doi":"10.1016/j.matre.2025.100355","DOIUrl":"10.1016/j.matre.2025.100355","url":null,"abstract":"<div><div>Electrocatalytic carbon dioxide reduction (ECO<sub>2</sub>RR) serves as a promising approach for converting CO<sub>2</sub> into energy-dense fuels and high-value chemicals, garnering substantial interest across academic and industrial sectors. Copper (Cu)-based electrocatalysts are widely acknowledged as highly effective for ECO<sub>2</sub>RR, primarily due to their optimal adsorption energy for ∗CO. Nonetheless, significant challenges remain to be addressed in transitioning Cu-based catalysts from research settings to industrial applications, including the low stability and unavoidable side reactions. This article aims to i) systematically examine the deactivation mechanisms of Cu-based catalysts, including changes in valence states, surface poisoning, and restructuring (agglomeration, dissolution, Ostwald ripening); ii) provide a timely overview of cutting-edge strategies to enhance the stability of Cu-based catalysts, such as ligand effects, heteroatom doping, support optimization, size effect, and restructuring; iii) highlight critical areas and prospective development directions that warrant further exploration to expedite the industrial adoption of Cu-based catalysts in ECO<sub>2</sub>RR.</div></div>","PeriodicalId":61638,"journal":{"name":"材料导报:能源(英文)","volume":"5 3","pages":"Article 100355"},"PeriodicalIF":13.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916618","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}
Pub Date : 2025-05-01DOI: 10.1016/j.matre.2025.100325
Yanqi Tang , Jiehui Hao , Jiafu Qu , Yahui Cai , Xiaogang Yang , Chang Ming Li , Jundie Hu
Hydrogen peroxide (H2O2) photosynthesis represents an advanced on-site production method with significant potential for on-demand supply. However, various challenges hinder the efficiency of H2O2 yield, including weak oxygen adsorption capacity, reliance on sacrificial agents, low charge separation and transfer efficiency. In this regard, doping design and defect engineering have emerged as robust and effective strategies for catalyst modification, particularly through their synergistic effects. Additionally, advanced in situ characterization techniques for investigating reaction mechanisms are gaining momentum. Herein, this review provides a comprehensive analysis of the fundamentals and challenges associated with photocatalytic H2O2 production, and highlights the advantages of doping and defect engineering. Subsequently, it outlines preparation methods and applications of these strategies. More importantly, it emphasizes the advanced characterization techniques utilized to validate doping and defects, as well as to investigate underlying mechanisms. Finally, the potential prospects and challenges of this reaction are anticipated. This review aims to offer valuable insights for researchers from both experimental and theoretical perspectives.
{"title":"Robust synergistic effects of doping and defect engineering in photocatalytic H2O2 production","authors":"Yanqi Tang , Jiehui Hao , Jiafu Qu , Yahui Cai , Xiaogang Yang , Chang Ming Li , Jundie Hu","doi":"10.1016/j.matre.2025.100325","DOIUrl":"10.1016/j.matre.2025.100325","url":null,"abstract":"<div><div>Hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) photosynthesis represents an advanced on-site production method with significant potential for on-demand supply. However, various challenges hinder the efficiency of H<sub>2</sub>O<sub>2</sub> yield, including weak oxygen adsorption capacity, reliance on sacrificial agents, low charge separation and transfer efficiency. In this regard, doping design and defect engineering have emerged as robust and effective strategies for catalyst modification, particularly through their synergistic effects. Additionally, advanced in situ characterization techniques for investigating reaction mechanisms are gaining momentum. Herein, this review provides a comprehensive analysis of the fundamentals and challenges associated with photocatalytic H<sub>2</sub>O<sub>2</sub> production, and highlights the advantages of doping and defect engineering. Subsequently, it outlines preparation methods and applications of these strategies. More importantly, it emphasizes the advanced characterization techniques utilized to validate doping and defects, as well as to investigate underlying mechanisms. Finally, the potential prospects and challenges of this reaction are anticipated. This review aims to offer valuable insights for researchers from both experimental and theoretical perspectives.</div></div>","PeriodicalId":61638,"journal":{"name":"材料导报:能源(英文)","volume":"5 2","pages":"Article 100325"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185106","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}
Pub Date : 2025-05-01DOI: 10.1016/j.matre.2025.100331
Long Cheng , Yuanyi Luo , Hao Wang , Zhiyue Zhou , Mengkai Yang , Chen Li , Yujie Zheng , Meng Li , Lei Wang , Kuan Sun
The superior adaptability of Prussian blue analogues (PBAs) in interacting with potassium ions has shifted research focus toward their potential application as cathodes of potassium-ion batteries (PIBs). The large interstitial space formed between metal ions and –C≡N– in PBAs can accommodate large-radius K+. However, the rapid nucleation in the co-precipitation synthesis process of PBAs induces many lattice defects of [M(CN)6]4− vacancies (V[M–C≡N]), interstitial and coordinated H2O molecules, which will directly lead to performance degradation. Moreover, originating from various transition metal elements in low/high-spin electron configuration states, PBAs exhibit diverse electrochemical behaviors, such as low reaction kinetics of low-spin iron (II), Jahn-Teller distortion and dissolution of manganese (III), and electrochemical inertness of nickel (II) and copper (II). Here, we summarize recently reported structures and properties of PBAs, classifying them based on the types of transition metals (iron, cobalt, manganese, copper, nickel) employed. Advanced synthesis strategies, including control engineering of crystallinity based on H2O molecules and V[M–C≡N], were discussed. Also, the approaches for enhancing the electrochemical performance of PBAs were highlighted. Finally, the challenges and prospects towards the future development of PBAs are put forward. The review is expected to provide technical and theoretical support for the design of high-performance PBAs.
{"title":"Optimized synthesis and electrochemical behaviors of Prussian blue analogues cathodes for potassium-ion batteries","authors":"Long Cheng , Yuanyi Luo , Hao Wang , Zhiyue Zhou , Mengkai Yang , Chen Li , Yujie Zheng , Meng Li , Lei Wang , Kuan Sun","doi":"10.1016/j.matre.2025.100331","DOIUrl":"10.1016/j.matre.2025.100331","url":null,"abstract":"<div><div>The superior adaptability of Prussian blue analogues (PBAs) in interacting with potassium ions has shifted research focus toward their potential application as cathodes of potassium-ion batteries (PIBs). The large interstitial space formed between metal ions and –C≡N– in PBAs can accommodate large-radius K<sup>+</sup>. However, the rapid nucleation in the co-precipitation synthesis process of PBAs induces many lattice defects of [M(CN)<sub>6</sub>]<sup>4−</sup> vacancies (V<sub>[M–C</sub><sub>≡</sub><sub>N]</sub>), interstitial and coordinated H<sub>2</sub>O molecules, which will directly lead to performance degradation. Moreover, originating from various transition metal elements in low/high-spin electron configuration states, PBAs exhibit diverse electrochemical behaviors, such as low reaction kinetics of low-spin iron (II), Jahn-Teller distortion and dissolution of manganese (III), and electrochemical inertness of nickel (II) and copper (II). Here, we summarize recently reported structures and properties of PBAs, classifying them based on the types of transition metals (iron, cobalt, manganese, copper, nickel) employed. Advanced synthesis strategies, including control engineering of crystallinity based on H<sub>2</sub>O molecules and V<sub>[M–C</sub><sub>≡</sub><sub>N]</sub>, were discussed. Also, the approaches for enhancing the electrochemical performance of PBAs were highlighted. Finally, the challenges and prospects towards the future development of PBAs are put forward. The review is expected to provide technical and theoretical support for the design of high-performance PBAs.</div></div>","PeriodicalId":61638,"journal":{"name":"材料导报:能源(英文)","volume":"5 2","pages":"Article 100331"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185107","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}
Pub Date : 2025-05-01DOI: 10.1016/j.matre.2025.100328
Georgios Charalampopoulos , Maria K. Daletou
Proton exchange membrane fuel cells (PEMFCs) constitute a promising avenue for environmentally friendly power generation. However, the reliance on unsustainable platinum-based electrocatalysts used at the electrodes poses challenges to the commercial viability of PEMFCs. Non-platinum group metal (non-PGM) alternatives, like nitrogen-coordinated transition metals in atomic dispersion (M–N–C catalysts), show significant potential. This work presents a comparative study of two distinct sets of Fe–N–C materials, prepared by pyrolyzing hybrid composites of polyaniline (PANI) and iron (II) chloride on a hard template. One set uses bipyridine (BPy) as an additional nitrogen source and iron ligand, offering an innovative approach. The findings reveal that the choice of pyrolysis temperature and atmosphere influences the catalyst properties. The use of ammonia in pyrolysis emerges as a crucial parameter for promoting atomic dispersion of iron, as well as increasing surface area and porosity. The optimal catalyst, prepared using BPy and ammonia, exhibits a half-wave potential of 0.834 V in 0.5 M H2SO4 (catalyst loading of 0.6 mg cm−2), a mass activity exceeding 3 A g−1 and high stability in acidic electrolyte, positioning it as a promising non-PGM structure in the field.
质子交换膜燃料电池（pemfc）是一种很有前途的环保发电技术。然而，依靠不可持续的铂基电催化剂用于电极，对pemfc的商业可行性提出了挑战。非铂族金属（non-PGM）替代品，如氮配位原子分散过渡金属（M-N-C催化剂），显示出巨大的潜力。本文介绍了两种不同的Fe-N-C材料的比较研究，这些材料是通过在硬模板上热解聚苯胺（PANI）和氯化铁（II）的杂化复合材料制备的。一组使用联吡啶（BPy）作为额外的氮源和铁配体，提供了一种创新的方法。结果表明，热解温度和气氛的选择影响催化剂的性能。在热解过程中，氨的使用成为促进铁原子分散、增加表面积和孔隙率的关键参数。在0.5 M H2SO4（催化剂负载为0.6 mg cm−2）中，催化剂的半波电位为0.834 V，质量活性超过3 a g−1，在酸性电解质中具有很高的稳定性，是一种很有前途的非pgm结构。
{"title":"Comparative development and evaluation of Fe–N–C electrocatalysts for the oxygen reduction reaction: The effect of pyrolysis and iron-bipyridine structures","authors":"Georgios Charalampopoulos , Maria K. Daletou","doi":"10.1016/j.matre.2025.100328","DOIUrl":"10.1016/j.matre.2025.100328","url":null,"abstract":"<div><div>Proton exchange membrane fuel cells (PEMFCs) constitute a promising avenue for environmentally friendly power generation. However, the reliance on unsustainable platinum-based electrocatalysts used at the electrodes poses challenges to the commercial viability of PEMFCs. Non-platinum group metal (non-PGM) alternatives, like nitrogen-coordinated transition metals in atomic dispersion (M–N–C catalysts), show significant potential. This work presents a comparative study of two distinct sets of Fe–N–C materials, prepared by pyrolyzing hybrid composites of polyaniline (PANI) and iron (II) chloride on a hard template. One set uses bipyridine (BPy) as an additional nitrogen source and iron ligand, offering an innovative approach. The findings reveal that the choice of pyrolysis temperature and atmosphere influences the catalyst properties. The use of ammonia in pyrolysis emerges as a crucial parameter for promoting atomic dispersion of iron, as well as increasing surface area and porosity. The optimal catalyst, prepared using BPy and ammonia, exhibits a half-wave potential of 0.834 V in 0.5 M H<sub>2</sub>SO<sub>4</sub> (catalyst loading of 0.6 mg cm<sup>−</sup><sup>2</sup>), a mass activity exceeding 3 A g<sup>−</sup><sup>1</sup> and high stability in acidic electrolyte, positioning it as a promising non-PGM structure in the field.</div></div>","PeriodicalId":61638,"journal":{"name":"材料导报:能源(英文)","volume":"5 2","pages":"Article 100328"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185649","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}
Pub Date : 2025-05-01DOI: 10.1016/j.matre.2025.100332
Yu Zou , Yang Lyu , Hanxin Wei , Baohui Chen , Xiansi Wang , Ming Zhang
Although graphite (G) materials dominate the commercial lithium-ion battery (LIBs) anode market due to their excellent overall performance, their limited rate performance and cycle life hinder applications in high-performance fields. To improve the cycling and rate performance of graphite anodes, this study first employed economical and eco-friendly tannic acid (TA) as a carbon coating precursor to coat graphite surfaces via π-π stacking interactions. In an oxygen-rich alkaline environment, tannic acid undergoes oxidation polymerization and crosslinks with formaldehyde to form a polymer matrix that coats the graphite surface. After subsequent carbonization, carbon-coated graphite material (G@C) was successfully synthesized. Carbon coatings on graphite effectively lower LIB resistance, enhance lithium-ion diffusion, and prevent exfoliation during cycling, thereby significantly boosting rate performance and prolonging the cycle life of graphite. After 500 cycles at 2C, the specific capacity of G@C was 103.7 mAh g−1, with a retention of 89%. However, G exhibited only 68.7 mAh g−1 and 85% retention under identical conditions. This carbon-coated graphite modification strategy offers a novel, green, and economical approach for designing and tailoring graphite anode materials for lithium-ion batteries with long cycle life and high rate.
虽然石墨(G)材料由于其优异的整体性能在商用锂离子电池（LIBs）阳极市场占据主导地位，但其有限的倍率性能和循环寿命阻碍了其在高性能领域的应用。为了提高石墨阳极的循环性能和速率性能，本研究首先采用经济环保的单宁酸（TA）作为碳涂层前驱体，通过π-π堆叠相互作用涂覆石墨表面。在富氧的碱性环境中，单宁酸与甲醛发生氧化聚合和交联，形成覆盖石墨表面的聚合物基质。经后续碳化后，成功合成了碳包覆石墨材料（G@C）。石墨表面的碳涂层能有效降低锂离子放电阻力，增强锂离子扩散，防止循环过程中的脱落，从而显著提高石墨的倍率性能，延长石墨的循环寿命。在2C下循环500次后，G@C的比容量为103.7 mAh g−1，保持率为89%。而在相同条件下，G仅表现出68.7 mAh G−1和85%的保留率。这种碳包覆石墨改性策略为长循环寿命、高倍率锂离子电池石墨负极材料的设计和定制提供了一种新颖、绿色、经济的方法。
{"title":"A green route based on π-π interactions to coat graphite for high-rate and long-life anodes in lithium-ion batteries","authors":"Yu Zou , Yang Lyu , Hanxin Wei , Baohui Chen , Xiansi Wang , Ming Zhang","doi":"10.1016/j.matre.2025.100332","DOIUrl":"10.1016/j.matre.2025.100332","url":null,"abstract":"<div><div>Although graphite (G) materials dominate the commercial lithium-ion battery (LIBs) anode market due to their excellent overall performance, their limited rate performance and cycle life hinder applications in high-performance fields. To improve the cycling and rate performance of graphite anodes, this study first employed economical and eco-friendly tannic acid (TA) as a carbon coating precursor to coat graphite surfaces via π-π stacking interactions. In an oxygen-rich alkaline environment, tannic acid undergoes oxidation polymerization and crosslinks with formaldehyde to form a polymer matrix that coats the graphite surface. After subsequent carbonization, carbon-coated graphite material (G@C) was successfully synthesized. Carbon coatings on graphite effectively lower LIB resistance, enhance lithium-ion diffusion, and prevent exfoliation during cycling, thereby significantly boosting rate performance and prolonging the cycle life of graphite. After 500 cycles at 2C, the specific capacity of G@C was 103.7 mAh g<sup>−</sup><sup>1</sup>, with a retention of 89%. However, G exhibited only 68.7 mAh g<sup>−</sup><sup>1</sup> and 85% retention under identical conditions. This carbon-coated graphite modification strategy offers a novel, green, and economical approach for designing and tailoring graphite anode materials for lithium-ion batteries with long cycle life and high rate.</div></div>","PeriodicalId":61638,"journal":{"name":"材料导报:能源(英文)","volume":"5 2","pages":"Article 100332"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185650","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}
Pub Date : 2025-05-01DOI: 10.1016/j.matre.2025.100333
Shiyao Sun , Jialin Zhao , Yijia Lei , Jingyi Wu , Jian Gao , Na Li , Jiayao Yang , Jiahao Lu , Liying Yin , Zhe Wang
Anion exchange membranes (AEMs) combining high hydroxide conductivity and alkali-resistant stability have become a major challenge for the long-term development of anion exchange membrane fuel cells (AEMFCs). Here, we designed a series of poly(mequitazine-terphenyl piperidinium) (QPMTP-X) AEMs with dual-functionalized quaternary ammonium cations by introducing a certain proportion of large steric hindrance mequitazine (MEQ) molecular building unit into the poly(aryl piperidinium) backbone. QPMTP-X retains the excellent mechanical properties of the poly(aryl piperidinium), while also combining the alkaline stability and high ionic conductivity exhibited by MEQ with flexible quinuclidinium side chains, achieving an overall improvement of membrane performance. Notably, QPMTP-30 exhibits an ultra-high conductivity of up to 206.83 mS cm−1 and excellent alkaline stability (over 95% conductivity is maintained after 1000 h of conditioning in 2 M NaOH at 80 °C). In fuel cell performance test, QPMTP-30 achieves a peak power density (PPD) of 974.5 mW cm−2 and operates stably at 80 °C for more than 60 h (0.1 A cm−2). Incorporating large steric hindrance building blocks and multi-cations into the poly(aryl piperidinium) backbone not only synergizes the development of high-performance AEMs but also opens up new ideas for the structural design of future AEMs.
阴离子交换膜（AEMs）兼具高氢氧导率和耐碱性稳定性，已成为阴离子交换膜燃料电池（aemfc）长期发展的主要挑战。本研究通过在聚芳基哌啶骨架中引入一定比例的大位阻甲喹嗪（MEQ）分子构建单元，设计了一系列双官能化季铵阳离子聚甲喹嗪-terphenyl哌啶（QPMTP-X） AEMs。QPMTP-X既保留了聚芳基胡椒啶优异的力学性能，又将MEQ所具有的碱性稳定性和高离子电导率与柔性喹核素侧链相结合，实现了膜性能的整体提升。值得注意的是，QPMTP-30表现出高达206.83 mS cm - 1的超高电导率和出色的碱性稳定性（在80°C的2 M NaOH中调理1000小时后，电导率保持在95%以上）。在燃料电池性能测试中，QPMTP-30达到974.5 mW cm - 2的峰值功率密度（PPD），在80°C （0.1 a cm - 2）下稳定工作60小时以上。在聚芳基哌替啶骨架中加入大空间位阻构件和多阳离子，不仅可以协同发展高性能的AEMs，而且为未来的AEMs结构设计开辟了新的思路。
{"title":"Constructing main/side chain dual-cation poly(mequitazine-terphenyl piperidinium) anion exchange membranes for high-performance fuel cells","authors":"Shiyao Sun , Jialin Zhao , Yijia Lei , Jingyi Wu , Jian Gao , Na Li , Jiayao Yang , Jiahao Lu , Liying Yin , Zhe Wang","doi":"10.1016/j.matre.2025.100333","DOIUrl":"10.1016/j.matre.2025.100333","url":null,"abstract":"<div><div>Anion exchange membranes (AEMs) combining high hydroxide conductivity and alkali-resistant stability have become a major challenge for the long-term development of anion exchange membrane fuel cells (AEMFCs). Here, we designed a series of poly(mequitazine-terphenyl piperidinium) (QPMTP-<em>X</em>) AEMs with dual-functionalized quaternary ammonium cations by introducing a certain proportion of large steric hindrance mequitazine (MEQ) molecular building unit into the poly(aryl piperidinium) backbone. QPMTP-<em>X</em> retains the excellent mechanical properties of the poly(aryl piperidinium), while also combining the alkaline stability and high ionic conductivity exhibited by MEQ with flexible quinuclidinium side chains, achieving an overall improvement of membrane performance. Notably, QPMTP-30 exhibits an ultra-high conductivity of up to 206.83 mS cm<sup>−</sup><sup>1</sup> and excellent alkaline stability (over 95% conductivity is maintained after 1000 h of conditioning in 2 M NaOH at 80 °C). In fuel cell performance test, QPMTP-30 achieves a peak power density (PPD) of 974.5 mW cm<sup>−</sup><sup>2</sup> and operates stably at 80 °C for more than 60 h (0.1 A cm<sup>−</sup><sup>2</sup>). Incorporating large steric hindrance building blocks and multi-cations into the poly(aryl piperidinium) backbone not only synergizes the development of high-performance AEMs but also opens up new ideas for the structural design of future AEMs.</div></div>","PeriodicalId":61638,"journal":{"name":"材料导报:能源(英文)","volume":"5 2","pages":"Article 100333"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185647","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}
Pub Date : 2025-05-01DOI: 10.1016/j.matre.2025.100327
Jian Luo , Junjie Zheng , Mingjie Wu , Fang Dong , Yuyu Liu , Jinli Qiao , Yingkui Yang
Beyond conventional electrocatalyst engineering, recent studies have demonstrated the effectiveness of manipulating the local reaction environment to enhance the performance of electrocatalytic reactions. The general principles and strategies of local environmental engineering for different electrocatalytic processes have been extensively investigated. This perspective critically appraises the recent advancements in local reaction environment engineering for water activation, aiming to provide a comprehensive assessment of this emerging field.
{"title":"Local microenvironment reactive zone engineering promotes water activation","authors":"Jian Luo , Junjie Zheng , Mingjie Wu , Fang Dong , Yuyu Liu , Jinli Qiao , Yingkui Yang","doi":"10.1016/j.matre.2025.100327","DOIUrl":"10.1016/j.matre.2025.100327","url":null,"abstract":"<div><div>Beyond conventional electrocatalyst engineering, recent studies have demonstrated the effectiveness of manipulating the local reaction environment to enhance the performance of electrocatalytic reactions. The general principles and strategies of local environmental engineering for different electrocatalytic processes have been extensively investigated. This perspective critically appraises the recent advancements in local reaction environment engineering for water activation, aiming to provide a comprehensive assessment of this emerging field.</div></div>","PeriodicalId":61638,"journal":{"name":"材料导报:能源(英文)","volume":"5 2","pages":"Article 100327"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185105","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}
Pub Date : 2025-05-01DOI: 10.1016/j.matre.2025.100329
Jiankai Liu , Xiaoping Dong , Duolong Jin , Qianran Pang , Liying Yang , Cuibiao Wang
Manganese dioxide is widely used as a cathode material in aqueous zinc-ion batteries, and the cathode material is a key factor limiting the performance of these batteries. In this study, β-manganese dioxide was used as the base material to synthesize two hybrid materials, i.e. manganese dioxide-3D graphene carbon nanotube hybrids (MnO2@3D-GPE/CNT) and manganese dioxide-3D-graphene hybrids (MnO2@3D-GPE), via intermittent high-energy vibration ball milling. Electrochemical tests revealed that the CNT-containing hybrid materials exhibited a higher specific capacity of 480 mAh g−1 and superior cycling stability, maintaining over 80% of its initial capacity after 1000 cycles at 500 mA g−1 with a Coulombic efficiency close to 100%. MnO2@3D-GPE/CNT had a smaller particle size distribution and a larger specific surface area than MnO2@3D-GPE, explaining its enhanced electrochemical performance. Additionally, MnO2@3D-GPE/CNT exhibited lower electrode impedance, further supporting its efficacy as a cathode material.
二氧化锰作为正极材料广泛应用于水性锌离子电池中，而正极材料是制约水性锌离子电池性能的关键因素。本研究以β-二氧化锰为基材，通过间歇高能振动球磨法制备了二氧化锰- 3d石墨烯碳纳米管杂化材料（MnO2@3D-GPE/CNT）和二氧化锰- 3d石墨烯杂化材料（MnO2@3D-GPE）。电化学测试表明，含碳纳米管的杂化材料具有更高的480 mAh g−1比容量和优异的循环稳定性，在500 mA g−1下循环1000次后保持80%以上的初始容量，库仑效率接近100%。MnO2@3D-GPE/CNT比MnO2@3D-GPE具有更小的粒径分布和更大的比表面积，这解释了其增强的电化学性能。此外，MnO2@3D-GPE/CNT表现出较低的电极阻抗，进一步支持其作为阴极材料的功效。
{"title":"Comparative study on the electrochemical performance of β-manganese dioxide-3D graphene mixtures with (without) carbon nanotubes","authors":"Jiankai Liu , Xiaoping Dong , Duolong Jin , Qianran Pang , Liying Yang , Cuibiao Wang","doi":"10.1016/j.matre.2025.100329","DOIUrl":"10.1016/j.matre.2025.100329","url":null,"abstract":"<div><div>Manganese dioxide is widely used as a cathode material in aqueous zinc-ion batteries, and the cathode material is a key factor limiting the performance of these batteries. In this study, β-manganese dioxide was used as the base material to synthesize two hybrid materials, i.e. manganese dioxide-3D graphene carbon nanotube hybrids (MnO<sub>2</sub>@3D-GPE/CNT) and manganese dioxide-3D-graphene hybrids (MnO<sub>2</sub>@3D-GPE), via intermittent high-energy vibration ball milling. Electrochemical tests revealed that the CNT-containing hybrid materials exhibited a higher specific capacity of 480 mAh g<sup>−1</sup> and superior cycling stability, maintaining over 80% of its initial capacity after 1000 cycles at 500 mA g<sup>−1</sup> with a Coulombic efficiency close to 100%. MnO<sub>2</sub>@3D-GPE/CNT had a smaller particle size distribution and a larger specific surface area than MnO<sub>2</sub>@3D-GPE, explaining its enhanced electrochemical performance. Additionally, MnO<sub>2</sub>@3D-GPE/CNT exhibited lower electrode impedance, further supporting its efficacy as a cathode material.</div></div>","PeriodicalId":61638,"journal":{"name":"材料导报:能源(英文)","volume":"5 2","pages":"Article 100329"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185651","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}
Transition metal dichalcogenides (TMDs) have emerged as promising electrocatalysts for various electrocatalytic processes. Molybdenum disulfide has been widely used, but a single electrocatalyst can hardly be applied to all reactions, making it essential to understand the electrochemistry of selected TMDs. Tungsten diselenide (WSe2) is reactive in gas evolution processes, similar to molybdenum, yet has received limited attention. This work explores how different exfoliation powers affect WSe2 structural configurations and their impact on catalytic performance in hydrogen evolution, oxygen evolution, and capacitive behaviour. The study investigates the structural properties of WSe2 nanosheets in both liquid (dispersion) and solid (electrode) phases. Low exfoliation power (90.4 W) contributes to well-defined WSe2, while higher power (814 W) leads to an increased number of selenium vacancies. These modifications influence key properties such as thickness, band gaps (1.518 to 1.578 eV), exfoliation yield (0.27 to 0.12 mg mL−1), and oxide content (44.3% to 53.9%), resulting in distinct electrochemical behaviours in different electrolytes. WSe2 nanosheets exfoliated at higher power exhibit reduced activity in the hydrogen evolution reaction (HER) due to the loss of W–Se bonds and the formation of an amorphous structure, but they show enhanced oxygen evolution reaction (OER) performance, particularly in alkaline media. Additionally, a higher concentration of selenium vacancies improves capacitive performance in acidic conditions due to proton contributions but are less favourable in neutral and basic electrolytes. This study highlights the importance of exfoliation power in tuning the structural properties of WSe2 for specific electrochemical applications, advancing the understanding of its synthesis and performance.
{"title":"Tunable properties of WSe2 nanosheets and nano-dispersion via energy dependent exfoliation","authors":"Panwad Chavalekvirat , Thanit Saisopa , Nichakarn Sornnoei , Wisit Hirunpinyopas , Weekit Sirisaksoontorn , Wutthikrai Busayaporn , Pawin Iamprasertkun","doi":"10.1016/j.matre.2025.100326","DOIUrl":"10.1016/j.matre.2025.100326","url":null,"abstract":"<div><div>Transition metal dichalcogenides (TMDs) have emerged as promising electrocatalysts for various electrocatalytic processes. Molybdenum disulfide has been widely used, but a single electrocatalyst can hardly be applied to all reactions, making it essential to understand the electrochemistry of selected TMDs. Tungsten diselenide (WSe<sub>2</sub>) is reactive in gas evolution processes, similar to molybdenum, yet has received limited attention. This work explores how different exfoliation powers affect WSe<sub>2</sub> structural configurations and their impact on catalytic performance in hydrogen evolution, oxygen evolution, and capacitive behaviour. The study investigates the structural properties of WSe<sub>2</sub> nanosheets in both liquid (dispersion) and solid (electrode) phases. Low exfoliation power (90.4 W) contributes to well-defined WSe<sub>2</sub>, while higher power (814 W) leads to an increased number of selenium vacancies. These modifications influence key properties such as thickness, band gaps (1.518 to 1.578 eV), exfoliation yield (0.27 to 0.12 mg mL<sup>−</sup><sup>1</sup>), and oxide content (44.3% to 53.9%), resulting in distinct electrochemical behaviours in different electrolytes. WSe<sub>2</sub> nanosheets exfoliated at higher power exhibit reduced activity in the hydrogen evolution reaction (HER) due to the loss of W–Se bonds and the formation of an amorphous structure, but they show enhanced oxygen evolution reaction (OER) performance, particularly in alkaline media. Additionally, a higher concentration of selenium vacancies improves capacitive performance in acidic conditions due to proton contributions but are less favourable in neutral and basic electrolytes. This study highlights the importance of exfoliation power in tuning the structural properties of WSe<sub>2</sub> for specific electrochemical applications, advancing the understanding of its synthesis and performance.</div></div>","PeriodicalId":61638,"journal":{"name":"材料导报:能源(英文)","volume":"5 2","pages":"Article 100326"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185108","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}
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