Systematic study of the effect of calcination temperature and Li/M molar ratio on high performance Ni-rich layered LiNi0.9Co0.1O2 cathode materials

被引：26

作者：

Iqbal, Azhar ^{[1
]}

Li, Daocong ^{[1
]}

机构：

[1] Hefei Guoxuan High Tech Power Energy CO Ltd, Inst Engn Res, Hefei 230011, Anhui, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2019年 / 720卷

关键词：

Ni-rich layered materials; Cation mixing; Cycling performance; Calcination temperature; LITHIUM-ION BATTERIES; LINI0.8CO0.15AL0.05O2; CATHODE; ELECTROCHEMICAL PERFORMANCE; STRUCTURAL DEFECTS; FACILE SYNTHESIS; LONG-LIFE; LIMO2; M; OXIDE; MICROSPHERES; ELECTRODES;

D O I：

10.1016/j.cplett.2019.01.044

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：

Ni-rich layered LiNi0.9Co0.1O2 cathode materials have been prepared by co-precipitation and solid-state reaction, and the effect of calcination temperature and Li/M molar ratio on the structure and electrochemical performance is systematically investigated. Sample fired at 730 degrees C with Li/M = 1.03 provided the best structural and electrochemical performance. The optimized sample delivered 220 mAh g(-1) discharge capacity at 0.1 C, and 92.5% capacity retention after 50 cycles at 1 C along with better rate capability (192 mAh g(-1) discharge capacity at 2 C). Such excellent performance is possibly attributed to the uniform clean spherical particles and well-developed layered structure with low cation mixing.

引用

页码：97 / 106

页数：10

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