Study on the decline mechanism of cathode material LiCoO2 for Li-ion battery

被引：18

作者：

Zhou, Qinghua ^{[1
]}

Xu, Huihui ^{[1
]}

Lv, Lu ^{[1
]}

Liu, Wenhua ^{[1
]}

Liang, Yan ^{[1
]}

Li, Huili ^{[2
]}

Chen, Tong ^{[3
]}

机构：

[1] Jiangxi Univ Technol, Nanchang 330098, Jiangxi, Peoples R China

[2] Jiangxi Univ Tradit Chinese Med, Nanchang 330004, Jiangxi, Peoples R China

[3] Jiangxi Univ Sci & Technol, Nanchang 330013, Jiangxi, Peoples R China

来源：

VACUUM | 2020年 / 177卷

关键词：

LIB; Decline; Delithiated state; LixCoO(2); LITHIUM; CHALLENGES; LIFEPO4;

D O I：

10.1016/j.vacuum.2020.109313

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Decline mechanism of cathode material LiCoO2 for Li-ion battery are studied based on density functional theory (DFT). For LiCoO2, as the Li-ions are pulled out during charging, the volume increases and it is easy to cause deformation of the battery, especially the dimension in the c direction changes greatly, resulting in a large Li layer space, which provides a very convenient condition for the transition metal ion Co to enter the Li layer, leads to the decline of LiCoO2 battery. Meanwhile, alkaline environment can also cause to decline of LiCoO2 battery.

引用

页数：6

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