Low-temperature performance of the Li[Li0.2Co0.4Mn0.4]O2 cathode material studied for Li-ion batteries

被引：1

作者：

Wang, Yuhui ^{[2
]}

Li, Zhe ^{[2
]}

Zhu, Kai ^{[1
]}

Li, Gang ^{[1
]}

Wei, Yingjin ^{[1
]}

Chen, Gang ^{[1
]}

Wang, Chunzhong ^{[1
]}

机构：

[1] Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China

[2] Jilin Univ, Coll Mat Sci & Engn, Changchun 130012, Peoples R China

来源：

RENEWABLE AND SUSTAINABLE ENERGY, PTS 1-7 | 2012年 / 347-353卷

关键词：

Cathode material; low temperature; electrochemical kinetics; CV; LITHIUM BATTERIES; MN;

D O I：

10.4028/www.scientific.net/AMR.347-353.3662

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The Li[Li0.2Co0.4Mn0.4]O-2 cathode material was prepared by a sol-gel method. Combinative X-ray diffraction (XRD) studies showed that the material was a solid solution of LiCoO2 and Li2MnO3. The material showed a reversible discharge capacity of 155.0 mAhg(-1) at -20 degrees C, which is smaller than that at room temperature (245.5 mAhg(-1)). However, the sample exhibited capacity retention of 96.3 % at -20 degrees C, only 74.2 % at 25 degrees C. The good electrochemical cycle performance at low temperature was due to the inexistence of Mn3+ in the material.

引用

页码：3662 / +

页数：2

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