Understanding the role of Mg-doped on core-shell structured layered oxide LiNi0.6Co0.2Mn0.2O2 | |
Zhang, Ningshuang1,2; Ai, Ling1; Mao, Liping1,2; Feng, Yaohua1; Xie, Yingchun1; Wang, Shengxian1,2; Liang, Youwei1,2; Cui, Xiaoling1,2; Li, Shiyou1,2,3 | |
2019-10 | |
发表期刊 | ELECTROCHIMICA ACTA |
ISSN | 0013-4686 |
卷号 | 319页码:822-831 |
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. |
关键词 | Lithium-ion battery LiNi0.6Co0.2Mn0.2O2 Core-shell Mg-doped Co-precipitation |
DOI | 10.1016/j.electacta.2019.07.048 |
收录类别 | SCI ; SCIE |
语种 | 英语 |
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 |
WOS类目 | Electrochemistry |
WOS记录号 | WOS:000480706000084 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/31532 |
专题 | 石油化工学院 |
通讯作者 | Li, Shiyou |
作者单位 | 1.Lanzhou Univ Technol, Coll Petrochem Technol, 36 Pengjiaping Rd, Lanzhou 730050, Gansu, Peoples R China; 2.Gansu Engn Lab Cathode Mat Lithium Ion Battery, Lanzhou 730050, Gansu, Peoples R China; 3.Qinghai Green Grass New Energy Technol Co Ltd, Qinghai Res Ctr Low Temp Lithium China Ion Batter, Xining 810000, Qinghai, Peoples R China |
第一作者单位 | 石油化工学院 |
通讯作者单位 | 石油化工学院 |
第一作者的第一单位 | 石油化工学院 |
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. |
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