Effect of fluorine in the preparation of Li(Ni1/3Co1/3Mn1/3)O2 via hydroxide co-precipitation

被引：14

作者：

Dai, Ke-Hua ^{[1
]}

Xie, Yan-Ting ^{[1
]}

Wang, Yin-Jie ^{[2
]}

Song, Zhao-Shuang ^{[1
]}

Lu, Qi ^{[1
]}

机构：

[1] Peking Univ, Coll Chem & Mol Engn, Dept Appl Chem, Beijing 100871, Peoples R China

[2] Beijing Inst Technol, Natl Lab Flame Retarded Mat, Beijing 100081, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2008年 / 53卷 / 08期

关键词：

lithium ion secondary battery; cathode material; co-precipitation; Li(Ni1/3Co1/3Mn1/3)O-2; F doping;

D O I：

10.1016/j.electacta.2007.10.017

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Uniform and spherical Li(Ni1/3Co1/3Mn1/3)O(2-delta)F delta powders were synthesized via NH3 and F- coordination hydroxide co-precipitation. The effect of F- coordination agent on the morphology, structure and electrochemical properties of the Li(Ni1/3Co1/3Mn1/3)O(2-delta)F delta were studied. The morphology, size, and distribution of (Ni1/3Co1/3Mn1/3)(OH)((2-delta))F-delta particle diameter were improved in a shorterreaction time through the addition of F-. The study suggested that the added F improves the layered characteristics of the lattice and the cyclic performance of Li(Ni1/3Co1/3Mn1/3)O-2 in the voltage range of 2.8-4.6 V. The initial capacity of the Li(Ni1/3Co1/3Mn1/3)O1.96F0.04 was 178 mAh g(-1), the maximum capacity was 186 mAh g(-1) and the capacity after 50 cycles was 179 mAh g(-1) in the voltage range of 2.8-4.6 V. (C) 2007 Published by Elsevier Ltd.

引用

页码：3257 / 3261

页数：5

共 27 条

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