气候变化领域集成服务门户(CCPortal): Manganese buffer induced high-performance disordered MnVO cathodes in zinc batteries

CCPortal

DOI	10.1039/d1ee00590a
	Manganese buffer induced high-performance disordered MnVO cathodes in zinc batteries
	Wei S.; Chen S.; Su X.; Qi Z.; Wang C.; Ganguli B.; Zhang P.; Zhu K.; Cao Y.; He Q.; Cao D.; Guo X.; Wen W.; Wu X.; Ajayan P.M.; Song L.
发表日期	2021
ISSN	17545692
起始页码	3954
结束页码	3964
卷号	14 期号:7
英文摘要	Buffer reactions can prevent changes induced by external causes. Here, we demonstrate the significant buffer role of a very small amount of Mn in a self-optimized cathode for an aqueous Zn-ion battery. Our operando X-ray characterization studies reveal that the dissolution of most of the Mn in MnV2O4 during the first charging cycle induces atomic re-arrangement to form a disordered vanadium oxide phase with 0.88 at% Mn. Interestingly, the residual Mn ions exhibit voluntary migration between tetrahedral and octahedral sites during Zn2+ de/intercalation. This Mn migration not only stabilizes the main structure of the vanadium-based electrode, but also modulates the Fermi surface of V 3d against excessive drift. As result, the optimized cathode delivers an excellent capacity of 610.2 mA h g-1 at 0.2 A g-1 and long-term cycling stability over 4000 cycles. This buffer contribution via tunable metal ions exhibits high potential for applications in long-life metal-ion batteries and related fields. © The Royal Society of Chemistry.
英文关键词	Cathodes; Manganese; Metal ions; Secondary batteries; Zinc; Cycling stability; External cause; High potential; Main structure; Octahedral sites; Re-arrangement; Vanadium oxides; X-ray characterization; Vanadium compounds; buffer zone; electrode; fuel cell; induced response; manganese; performance assessment; zinc
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190622
作者单位	National Synchrotron Radiation Laboratory, Cas Center for Excellence in Nanoscience, University of Science and Technology of China, Anhui, Hefei, 230029, China; Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China; Department of Materials Science and Nano Engineering, Rice University, Houston, TX 77005, United States; School of Chemistry and Material Sciences, University of Science and Technology of China, Anhui, Hefei, 230026, China
推荐引用方式 GB/T 7714	Wei S.,Chen S.,Su X.,et al. Manganese buffer induced high-performance disordered MnVO cathodes in zinc batteries[J],2021,14(7).
APA	Wei S..,Chen S..,Su X..,Qi Z..,Wang C..,...&Song L..(2021).Manganese buffer induced high-performance disordered MnVO cathodes in zinc batteries.Energy & Environmental Science,14(7).
MLA	Wei S.,et al."Manganese buffer induced high-performance disordered MnVO cathodes in zinc batteries".Energy & Environmental Science 14.7(2021).