V 2 O 5 Nanospheres with Mixed Vanadium Valences as High Electrochemically Active Aqueous Zinc-Ion Battery Cathode Fei Liu, Zixian Chen, Guozhao Fang, Ziqing Wang, Yangsheng Cai, Boya Tang, Jiang Zhou * andShuquan Liang * Nano-Micro Lett. (2019) 11: 25 https://doi.org/10.1007/s40820-019-0256-2 本文亮点 1 以 VOOH 为前驱体，采用一种简便新颖的方法合成混合钒价态的 V 4+ -V 2 O 5 空心纳米球。 2 首次将混合钒价态的 V 4+ -V 2 O 5 用作水系锌离子电池的正极材料。 3 V 4+ -V 2 O 5 用作水系锌离子电池正极材料时表现出优异的循环性能和倍率性能。 内容简介 可充电水系锌离子电池（ ZIBs ） 因为其低成本、环境友好、安全可靠等优点，同时兼顾高能量高功率的特性，有望应用于大规模储能领域。 目前针对水系 ZIBs 开发的正极材料很多，但锰基材料倍率性能差，普鲁士蓝类似物容量低。 钒基材料 资源丰富，并且表现出高比容量和长循环稳定性，作为水系 ZIBs 正极材料很有潜力。 但是， 纯相的 V 2 O 5 由于电子和离子电导率低，表现出较差的 Zn 2+ 扩散动力学，阻碍了其进一步应用。 钒基化合物如 K 0.25 V 2 O 5 ， Na 0.33 V 2 O 5 ， NH 4 V 4 O 10 等已经被报道用作水系 ZIBs 正极材料且表现出较好的电化学性能。 但是 客体离子的嵌入其实增加了材料的摩尔质量，一定程度上也降低了材料的比容量。 需要注意的是，上述材料中的钒元素都处于一种混合价态。 混合价态的引入对电化学性能有显著的提升 ，这点在锂 ( 钠 ) 离子电池的研究中均有报道。 👇 中南大学梁叔全教授和周江特聘教授团队 首次以 VOOH 为前驱体采用一种新颖简单的合成方法制备了 混 合钒价态的 V 4+ -V 2 O 5 空心纳米球作为水系 ZIBs 的正极材料。 V 4+ 的存在可能促进电化学反应的相变过程，增加电极与电解液之间的有效接触面积，而且像电极保护层一样维持电极材料的稳定性。 通过对比实验，我们发现与纯相的 V 2 O 5 相比， V 4+ -V 2 O 5 表现出 更高的电化学活性、更低的极化程度、更快的离子传输和更好的导电性。 同时 V 4+ -V 2 O 5 用作水系 ZIBs 正极材料时表现出 较好的储锌能力 。在以低成本的 2 M ZnSO 4 水溶液作为电解液的情况下，不仅比容量高，长循环稳定性好，还表现出 极佳的倍率性能 。 图文导读 前驱体VOOH及V 4+ -V 2 O 5 的形貌表征 前驱体 VOOH 在温度升高的过程中，先经历一段无定型的状态（少数宽泛而又微弱的衍射峰），最后转变成稳定的 V 2 O 5 相。 VOOH 和 V 4+ -V 2 O 5 都是纳米球的形貌。 图 1 （ a ） VOOH 的 XRD 图 ; （ b ） VOOH 的动态高温 XRD 图 ; （ c ） VOOH 的 SEM 图 ; （ d ） V 4+ -V 2 O 5 的 SEM 图。 👇 V 4+ - V 2 O 5 和 V 2 O 5 正极 材料的电化学性能表征对比 V 4+ -V 2 O 5 电极相比于 V 2 O 5 电极而言具有 更高的电化学活性、更低的极化程度，更快的离子传输能力，更好的导电性。 同时 V 4+ -V 2 O 5 用作水系 ZIBs 正极材料时表现出 优越的储锌能力 。在以低成本的 2 M ZnSO 4 水溶液作为电解液的情况下，不仅比容量高，长循环稳定性好，还表现出 极佳的倍率性能 。 Zn/ V 4+ -V 2 O 5 电池在 10 A g -1 下循环 1000 圈后仍能保持 140 mA h g -1 的比容量。 图 3 （a） V 4+ -V 2 O 5 和 V 2 O 5 电极在 0.1 mV s -1 扫速下的 CV 图 ； （ b ） V 4+ -V 2 O 5 和 V 2 O 5 的 GITT 曲线及其计算的扩散系数图 ； （ c ） V 4+ -V 2 O 5 和 V 2 O 5 电极循环前的阻抗拟合图； （ d ） Zn/ V 4+ -V 2 O 5 电池和 Zn/ V 2 O 5 电池在 1 A g -1 下的循环性能 ； （ e ） V 4+ -V 2 O 5 和 V 2 O 5 电极在 1 A g -1 下循环第二圈的充放电平台 ； （ f ） Zn/ V 4+ -V 2 O 5 电池和 Zn/ V 2 O 5 电池的倍率性能 ； （ g ） Zn/ V 4+ -V 2 O 5 电池在 10 A g -1 下的长循环性能 。 👇 V 4+ -V 2 O 5 电极 的储 Zn 机理分析 Zn/V 4+ -V 2 O 5 电池放电 / 充电过程中，伴随着 Zn 2 + 的嵌入 / 脱出。 首次循环后部分 Zn 2 + 不能完全脱出，留在 V 4+ -V 2 O 5 结构中起着支柱的作用 ，使 V 4+ -V 2 O 5 结构在后续循环过程更加稳定。 图 4 （ a ）不同充放电状态下的首圈非原位 XRD 图 ; （ b,c ）首次完全放电 / 充电状态下的 HRTEM 和 TEM-EDS 图 ； （ d, e ）首次完全放电 / 充电状态下， V 2 p 和 Zn 2 p 的非原位 XPS 光谱图。 作者简介 梁叔全 （本文通讯作者） 教授 中南大学材料科学与工程学院 中南大学材料学院新能源材料研究团队 学术带头人。 芙蓉学者特聘教授，享受国务院特殊津贴专家 ，澳大利亚Monash大学工学约翰莫纳士爵士奖章获得者。 在国家自然科学基金计划、863计划、973计划等支持资助下，从事 能源存储材料、粉末冶金、轻合金 等 研究。 相关研究成果发表高水平论文100余篇，其中包括国际著名权威学术刊物：Energy environmental science，Advanced Energy Materials, Nano Energy, Journal of American Ceramic Society, Journal of European Ceramic Society等。 申请专利10余项，获国家科技进步二等奖1项、部级科技进步一等奖1项、省级科技进步二等奖1项。 E-mail: lsq@csu.edu.cn 主页链接： http://mse.csu.edu.cn/bk/?id=Liang%20Shuquan 周江 （本文通讯作者） 特聘教授 中南大学材料科学与工程学院 工学博士，麻省理工学院博士后，中南大学特聘教授。主要研究方向为 锂(钠)离子电池、水系锌离子电池、超级电容器以及催化电极材料 等。 以一作或通讯作者在Energy Environ. Sci., Adv. Energy Mater., Adv. Funct. Mater., ACS Energy Lett., Nano Energy, Energy Storage Mater., Adv. Sci., 等国际SCI期刊发表学术论文40余篇。 E-mail: zhou_jiang@csu.edu.cn 主页链接： http://mse.csu.edu.cn/bk/?id=zhou-jiang 刘菲 （本文第一作者） 硕士研究生 中南大学材料科学与工程学院 主要研究方向： 水系锌离子电池正极材料 E-mail: liufei0317@csu.com 关于我们 Nano-Micro Letters 是上海交通大学主办的英文学术期刊，主要报道纳米/微米尺度相关的最新高水平科研成果与评论文章及快讯，在 Springer 开放获取（ open-access ）出版。可免费获取全文，欢迎关注和投稿。 E-mail： editorial_office@nmletters.org Tel： 86-21-34207624
曹余良教授团队EER最新综述︱钠离子电池材料的最新发展 最新综述： 可持续能源系统需要成本低廉、电极性能好的电网规模的储能系统。由于钠资源的丰富性和低成本及其与较成熟的锂离子电池相似的电化学性质，钠离子电池（ SIBs ）有潜力成为电网规模的储能系统，吸引了极大的关注。在过去的十年中，尽管为了促进 SIBs 的发展，研究人员已经做出了巨大的努力，并且已经取得了显著的进展，但还有待改进，以实现 SIBs 在能量 / 功率密度和长循环稳定性方面的商业化。本文综述了 SIBs 电极材料的最新进展，包括各种有前景的正极和负极材料。此外，讨论了储钠机理，电化学性能、结构和成分优化，还有 SIBs 电极材料方面的挑战和前景。尽管还存在巨大的挑战，但我们相信，经过深入研究，成本低、寿命长的钠离子电池很快将有大规模的储能商业化应用。 Recent Advances in Sodium-Ion Battery Materials Abstract Grid-scale energy storage systems with low-cost and high-performance electrodes are needed to meet the requirements of sustainable energy systems. Due to the wide abundance and low cost of sodium resources and their similar electrochemistry to the established lithium-ion batteries, sodium-ion batteries (SIBs) have attracted considerable interest as ideal candidates for grid-scale energy storage systems. In the past decade, though tremendous efforts have been made to promote the development of SIBs, and significant advances have been achieved, further improvements are still required in terms of energy/power density and long cyclic stability for commercialization. In this review, the latest progress in electrode materials for SIBs, including a variety of promising cathodes and anodes, is briefly summarized. Besides, the sodium storage mechanisms, endeavors on electrochemical property enhancements, structural and compositional optimizations, challenges and perspectives of the electrode materials for SIBs are discussed. Though enormous challenges may lie ahead, we believe that through intensive research efforts, sodium-ion batteries with low operation cost and longevity will be commercialized for large-scale energy storage application in the near future. 文章信息 文章将发表于 EER 期刊 2018 年第 1 卷第 3 期，详情请点击阅读全文，可免费下载。 文章题目： Recent Advances in Sodium-Ion Battery Materials 引用信息： Fang, Y., Xiao, L., Chen, Z. et al. Electrochem. Energ. Rev. (2018). https://doi.org/10.1007/s41918-018-0008-x 关键词： 正极材料，负极材料，钠离子电池，储能 全文链接： https://link.springer.com/article/10.1007/s41918-018-0008-x/fulltext.html 扫描或长按二维码，识别后直达原文页面 Biographies of Authors YONGJIN FANG (FIRST AUTHOR) received Ph.D. degree (2016) in physical chemistry from Wuhan University. His recent research interests focus on novel electrode materials for sodium-ion batteries, energy storage mechanism and electrode characterizations. LIFEN XIAO received her Ph.D. in Physical Chemistry from Wuhan University in 2003. She is now a professor at Wuhan University of Technology. Her research is focused on novel electrode materials for electrochemical energy conversion and storage. ZHONGXUE CHEN received her Ph.D. in Physical Chemistry from Wuhan University in 2011. He now works at School of Power and Mechanical Engineering, Wuhan University. His research interest includes advanced materials for electrochemical energy conversion and storage. XINPING AI received her Ph.D. in Physical Chemistry from Wuhan University. He is a professor of Wuhan University. Her research interest mainly focuses on electrode materials for next-generation rechargeable batteries, such as lithium–sulfur batteries and Si anodes. YULIANG CAO (CORRESPONDING AUTHOR) received his Ph.D. (2003) in Wuhan University, and then he worked as a visiting scholar in Pacific Northwest National Laboratory from 2009 to 2011. He is now a professor at physical chemistry, Wuhan University. His research interests focus on developing advanced materials (e.g., alloy nanocomposite anodes, transition metal oxide cathodes, phosphate framework materials and novel electrolytes) for sodium-ion batteries. HANXI YANG received his M.Sc. degree (1981) in Wuhan University, and received his Ph.D. degree (1987) in University of Southampton, UK. He has been working in the field of energy storage technologies for a long time. He is interested in new materials, new technologies and new systems for energy storage. 杂志 杂志介绍 杂志介绍 Electrochemical Energy Reviews (《电化学能源评论》，简称EER)，该期刊旨在及时反映国际电化学能源转换与存储领域的最新科研成果和动态，促进国内、国际的学术交流，设有专题综述和一般综述栏目。EER是国际上第一本专注电化学能源的综述性期刊。EER覆盖化学能源转换与存储所有学科，包括燃料电池，锂电池，金属-空气电池，超级电容器，制氢-储氢，CO 2 转换等。 EER为季刊，每年3月、6月、9月以及12月出版。 创刊号在2018年3月正式出版。 欢迎关注和投稿 期刊执行严格的同行评议，提供英文润色、图片精修、封面图片设计等服务。出版周期3个月左右，高水平论文可加快出版。欢迎关注和投稿。 联系我们 Contact us E-mail: eer@oa.shu.edu.cn Website: http://www.springer.com/chemistry /electrochemistry/journal/41918 http://www.eer.shu.edu.cn Tel.: 86-21-66136010 长按二维码关注我们
汪国秀教授团队EER最新综述︱钠离子电池电极材料：晶体结构和储钠机理研究 最新综述： 由于钠资源丰富、成本低廉，钠离子电池技术对大规模电能存储和转换有一定吸引力。然而，钠离子电池的发展面临着巨大的挑战，主要是因为难以确定它所适合的正极材料和负极材料。本文详细综述了钠离子电池正极材料和负极材料的研究进展，重点围绕正极材料的结构研究和负极材料的储钠机理。在全世界的共同努力下，高性能钠离子电池将会得到充分发展，获得实际应用。 EER’s Latest Review from Prof. Guoxiu Wang’s Group︱Electrode Materials for Sodium-Ion Batteries: Considerations on Crystal Structures and Sodium Storage Mechanisms Abstract Sodium-ion batteries have been emerging as attractive technologies for large-scale electrical energy storage and conversion, owing to the natural abundance and low cost of sodium resources. However, the development of sodium-ion batteries faces tremendous challenges, which is mainly due to the difficulty to identify appropriate cathode materials and anode materials. In this review, the research progresses on cathode and anode materials for sodium-ion batteries are comprehensively reviewed. We focus on the structural considerations for cathode materials and sodium storage mechanisms for anode materials. With the worldwide effort, high-performance sodium-ion batteries will be fully developed for practical applications. 文章信息 文章将发表于 EER 期刊 2018 年第 1 卷第 2 期，详情请阅读全文，可免费下载。 文章题目： Electrode Materials for Sodium-Ion Batteries: Considerations on Crystal Structures and Sodium Storage Mechanisms 引用信息： Wang, T., Su, D., Shanmukaraj, D. et al. Electrochem. Energ. Rev. (2018). https://doi.org/10.1007/s41918-018-0009-9 关键词： 钠离子电池，正极材料 , 负极材料, 晶体结构, 储钠机理，储能 全文链接： https://link.springer.com/article/10.1007/s41918-018-0009-9/fulltext.html 扫描或长按二维码，识别后直达原文页面 Biographies of Authors TIANYI WANG (FIRST AUTHOR) received his B.S. in 2017 from Yangzhou University. He is now pursuing his Ph.D study in the Centre for Clean Energy Technology, University of Technology Sydney (UTS), Australia. His current research focuses on developing novel nanostructured materials for Na-ion batteries and Li-S batteries. DR. DAWEI SU (FIRST AUTHOR) is Senior Lecturer in School of Mathematical and Physical Sciences in Faculty of Science. He is also the winner of the Discovery Early Career Researcher Award (DECRA). His original research is related to advanced energy storage and conversion, including rechargeable lithium-ion, sodium-ion, potassium-ion, lithium-sulfur, and lithium-air (O2) batteries. Especially, He is a pioneer in the study of sodium-ion batteries. His research activities involve the design, investigation and development of novel nanostructured materials for batteries applications. Tianyi Wang and Dawei Su have contributed equally to this work. DR. DEVARAJ SHANMUKARAJ obtained his Ph.D (Physics) in 2008 with a specialization in “Solid State Ionics” from Pondicherry University, India after completing his Master degree in Materials Science and Technology. From 2008-2012 he was working as a Post-Doctoral Researcher at the Laboratoire de R è activité et Chimie des Solides (LRCS), Université de Picardie Jules Verne, France with Prof. Michel Armand and Prof. Jean Marie Tarascon. Since 2013 he is as an Associate Researcher at CIC Energigune. His expertise includes Li, Na, Li/S and Li-air batteries with activities on new cathodes, Polymer electrolytes, electrolyte additives and sacrificial salts. PROFESSOR TEOFILO ROJO received his PhD in chemistry from the University of the Basque Country in 1981. He became Full Professor of Inorganic Chemistry at the UPV/EHU in 1992. His research has been focused on Solid State Chemistry and Materials Science. Since 2010 he is the Scientific Director of the CIC Energigune developing materials research for advanced batteries (lithium, sodium, etc.). In 2015 he was appointed as an Academic Member of the Royal Spanish Academy of Exacts, Physical and Natural Sciences and in 2016 he was named member of the Working Party on Chemistry and Energy of EuCheMS (European Chemical Science). PROFESSOR MICHEL ARMAND(CORRESPONDING AUTHOR) received his Ph.D degree in Physics in 1978 from University of Joseph Fourier. He has been the Directeur de Recherche at Centre National de la Recherche Scientifique (CNRS) since 1989 and Professor at University of Montreal (1995– 2004). During his career he pioneered several theoretical concepts and practical applications in the field of energy-related electrochemistry: electrode materials, inorganic/organic materials. He ushered the concept of intercalation compounds (1972) and the introduction of polymer electrolytes for battery application (1978), followed by the introduction of new families of highly conductive salts (perfluoroimides like TFSI and FSI) for liquid and polymer electrolytes. Since 2013 he has been a Group Leader at CIC Energigune. PROFESSOR GUOXIU WANG(CORRESPONDING AUTHOR) is the Director of the Centre for Clean Energy Technology and a Distinguished Professor at University of Technology Sydney (UTS), Australia. He is an expert in materials chemistry, electrochemistry, energy storage and conversion, and battery technologies. His research interests include lithium-ion batteries, lithium-air batteries, sodium-ion batteries, lithium-sulfur batteries, supercapacitors, hydrogen storage materials, fuel-cells, graphene, MXene and other 2D functional materials for energy storage and conversion. Professor Wang has published more than 400 refereed journal papers with an h-index of 87. His publications have attracted over 25,000 citations. 杂志介绍 Electrochemical Energy Reviews (《电化学能源评论》，简称EER)，该期刊旨在及时反映国际电化学能源转换与存储领域的最新科研成果和动态，促进国内、国际的学术交流，设有专题综述和一般综述栏目。EER是国际上第一本专注电化学能源的综述性期刊。EER覆盖化学能源转换与存储所有学科，包括燃料电池，锂电池，金属-空气电池，超级电容器，制氢-储氢，CO 2 转换等。 EER为季刊，每年3月、6月、9月以及12月出版。 创刊号在2018年3月正式出版。 欢迎关注和投稿 期刊执行严格的同行评议，提供英文润色、图片精修、封面图片设计等服务。出版周期3个月左右，高水平论文可加快出版。欢迎关注和投稿。 联系我们 Contact us E-mail: eer@oa.shu.edu.cn Website: http://www.springer.com/chemistry /electrochemistry/journal/41918 http://www.eer.shu.edu.cn Tel.: 86-21-66136010 长按二维码关注我们
标签: 正极材料
