Effects of the Li:(Mn+ Co+Ni) molar ratio on the electrochemical properties of LiMn1/3Co1/3Ni1/3O2 cathode material

被引：97

作者：

Todorov, YM ^{[1
]}

Numata, K ^{[1
]}

机构：

[1] Mitsui Min & Smelting Co Ltd, Battery Mat Div, Tech Dept, Takehara, Hiroshima 7250025, Japan

来源：

ELECTROCHIMICA ACTA | 2004年 / 50卷 / 2-3期

关键词：

lithium ion battery; layered material; cathode; rate performance; Li/M ratio;

D O I：

10.1016/j.electacta.2004.05.050

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Li1+x(Mn1/3Co1/3Ni1/3)(1-x)O-2 (x greater than or equal to 0) mixed oxides with different Li/M molar ratios (M = Mn1/3Co1/3Ni1/3) were obtained. The materials were characterized using chemical analysis, X-ray diffraction measurement, particle size distribution measurement, BET, and QOCV measurement. Rate performance and cycling performance were evaluated. Increased Li/M molar ratio, especially 1.10 < Li/M < 1.15, resulted in better cycling and rate performance as well as higher first cycle coulombic efficiency. As the discharge capacity is lower when Li/M molar ratio is greater than 1.10, the optimum ratio seems to be around 1.10. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：495 / 499

页数：5

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