Understanding the role of Mg-doped on core-shell structured layered oxide LiNi0.6Co0.2Mn0.2O2

doi:10.1016/j.electacta.2019.07.048

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Understanding the role of Mg-doped on core-shell structured layered oxide LiNi0.6Co0.2Mn0.2O2
	Zhang, Ningshuang 1,3; Ai, Ling 3; Mao, Liping 1,3; Feng, Yaohua 3; Xie, Yingchun 3; Wang, Shengxian 1,3; Liang, Youwei 1,3; Cui, Xiaoling 1,3; Li, Shiyou 1,2,3
刊名	ELECTROCHIMICA ACTA
	2019-10
卷号	319 页码:822-831
关键词	Lithium-ion battery LiNi0.6Co0.2Mn0.2O2 Core-shell Mg-doped Co-precipitation
ISSN号	0013-4686
DOI	10.1016/j.electacta.2019.07.048
英文摘要	Mg-doped on core-shell structured layered oxide LiNi0.6Co0.2Mn0.2O2 cathodes are synthesized by doping Mg into LiNi0.8Co0.1Mn0.1O2 core and LiNi0.2Co0.4Mn0.4O2 shell, respectively or Mg co-doped both in core and shell. The influence of Mg doping on crystal structure are characterized by XRD, EDS, XPS and ICPES. Electrochemical tests show that doping Mg in the shell layer of Li[(Ni0.8Co0.1Mn0.1)(2/3)(Ni0.2Co0.4Mn0.4)(1/3)]O-2 (S-Mg) exhibits the optimized electrochemical performance, with retention of 85.79% after 100 cycles at 0.2 C and a high discharge capacity of 128.4 mAh g(-1) at 5 C, compared with C-S, C-Mg, and F-Mg cathodes. Mg-doped in shell layer of Ni-rich cathode material LiNi0.6Mn0.2Co0.2O2 can not only maintains the stability of material surface, but also reduces the material impedance. The expansion space of the crystalline host lattice caused by Mg doping in the shell will also promote the transport of Li thorn during charging and discharging. Cation doping in shell is conductive to electrochemical performance of core-shell materials. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	Gansu Province Science and Technology Major Project[17ZD2GC011] ; High Value Patent Conversion Implementation Project[18ZC1LA014]
WOS研究方向	Electrochemistry
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000480706000084
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31532]
专题	石油化工学院
通讯作者	Li, Shiyou
作者单位	1.Gansu Engn Lab Cathode Mat Lithium Ion Battery, Lanzhou 730050, Gansu, Peoples R China 2.Qinghai Green Grass New Energy Technol Co Ltd, Qinghai Res Ctr Low Temp Lithium China Ion Batter, Xining 810000, Qinghai, Peoples R China 3.Lanzhou Univ Technol, Coll Petrochem Technol, 36 Pengjiaping Rd, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Ningshuang,Ai, Ling,Mao, Liping,et al. Understanding the role of Mg-doped on core-shell structured layered oxide LiNi0.6Co0.2Mn0.2O2[J]. ELECTROCHIMICA ACTA,2019,319:822-831.
APA	Zhang, Ningshuang.,Ai, Ling.,Mao, Liping.,Feng, Yaohua.,Xie, Yingchun.,...&Li, Shiyou.(2019).Understanding the role of Mg-doped on core-shell structured layered oxide LiNi0.6Co0.2Mn0.2O2.ELECTROCHIMICA ACTA,319,822-831.
MLA	Zhang, Ningshuang,et al."Understanding the role of Mg-doped on core-shell structured layered oxide LiNi0.6Co0.2Mn0.2O2".ELECTROCHIMICA ACTA 319(2019):822-831.