Surface modification single crystal Li-rich Li1.2Mn0.54Ni0.13Co0.13O2 as high performance cathode materials for Li-ion batteries

被引：7
|
作者：
Jiao, Changmei [1 ]
Wang, Meng [2 ]
Huang, Bing [1 ]
Zhang, Mengxia [2 ]
Xu, Guodong [1 ]
Liu, Yuxin [1 ]
Zhao, Yunfeng [3 ]
Hu, Xuebu [4 ]
机构：
[1] Yancheng Teachers Univ, Coll Chem & Environm Engn, Yancheng 224007, Peoples R China
[2] Beijing Inst Technol Chongqing Innovat Ctr, Chongqing 401120, Peoples R China
[3] Yancheng Inst Technol, Anal & Testing Ctr, Yancheng 224051, Peoples R China
[4] Chongqing Univ Technol, Coll Chem & Chem Engn, Chongqing 400054, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 937卷
基金：
国家重点研发计划;
关键词：
Li -rich cathode materials; Single crystal; Surface modification; Diffusion coefficient; ENHANCED ELECTROCHEMICAL PERFORMANCE; LAYERED OXIDE CATHODES; VOLTAGE DECAY; RATE CAPABILITY; TAP DENSITY; LINI1/3CO1/3MN1/3O2; ACTIVATION; SUPPRESS; KINETICS; NI;
D O I：
10.1016/j.jallcom.2022.168389
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
To improve electrochemical performance and structure stability, Li3PO4 surface modification and single crystallization are applied for Li1.2Mn0.54Ni0.13Co0.13O2 to improve structural stability and upgrade electro-chemical performance. The electrochemical characterization indicates that single crystal cathode material with Li3PO4 surface modification has high cycle stability and superior Li+ diffusion coefficient. Li-ion con-ductor Li3PO4 can supply diffusion channels for Li+ migration and inhibit phase transition. Coating Li3PO4 on Li-rich cathode materials is an effective method to improve the electrochemical performance and structure stability of the materials. (c) 2022 Elsevier B.V. All rights reserved.
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页数：12
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