Rate Performance Modification of a Lithium-Rich Manganese-Based Material through Surface Self-Doping and Coating Strategies

doi:10.1021/acs.langmuir.1c00225

	Rate Performance Modification of a Lithium-Rich Manganese-Based Material through Surface Self-Doping and Coating Strategies
	Li, Wanyun 1,2; Zhao, Bangchuan 2; Bai, Jin 2; Ma, Hongyang 1,2; Li, Kunzhen 1,2; Wang, Peiyao 1,2; Mao, Yunjie 1,2; Zhu, Xuebin 2; Sun, Yuping 2,3
刊名	LANGMUIR
	2021-03-16
卷号	37
ISSN号	0743-7463
DOI	10.1021/acs.langmuir.1c00225
通讯作者	Zhao, Bangchuan(bchzhao@issp.ac.cn) ; Sun, Yuping(ypsun@issp.ac.an)
英文摘要	Lithium-rich manganese-based materials are currently considered to be highly promising cathode materials for next-generation lithium-ion batteries due to their high specific capacity (>250 mA h g(-1)) and low cost. A key challenge for the commercialization of these lithium-rich manganese-based materials is their poor rate performance, which is caused by the low electronic conductivity and increasing interface charge transfer resistance produced by the side reaction during the cycling procedure. In this work, we try to improve the rate performance of a lithium-rich manganese-based material Li1.2Mn0.54Co0.13Ni0.13O2 using a collaborative approach with Co-doping and NaxCoO2-coating methods. Cobalt doping can improve the electronic conductivity, and NaxCoO2 coating provides a convenient lithium-ion diffusion channel and moderately alleviates the inevitable decrease in cycling stability caused by cobalt doping. Under the synergistic effect of these two modification strategies, the surface and internal dynamics of the Li1.2Mn0.54Co0.13Ni0.13O2 material are enhanced and its rate performance is considerably improved without decay of the cycle stability.
资助项目	National Key Research and Development program[2017YFA0402800] ; National Natural Science Foundation of China[U1732160]
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000636732300024
资助机构	National Key Research and Development program ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/121560]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhao, Bangchuan; Sun, Yuping
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China 3.Chinese Acad Sci, High Magnet Field Lab, HFIPS, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Li, Wanyun,Zhao, Bangchuan,Bai, Jin,et al. Rate Performance Modification of a Lithium-Rich Manganese-Based Material through Surface Self-Doping and Coating Strategies[J]. LANGMUIR,2021,37.
APA	Li, Wanyun.,Zhao, Bangchuan.,Bai, Jin.,Ma, Hongyang.,Li, Kunzhen.,...&Sun, Yuping.(2021).Rate Performance Modification of a Lithium-Rich Manganese-Based Material through Surface Self-Doping and Coating Strategies.LANGMUIR,37.
MLA	Li, Wanyun,et al."Rate Performance Modification of a Lithium-Rich Manganese-Based Material through Surface Self-Doping and Coating Strategies".LANGMUIR 37(2021).