Degradation mechanism of spinel LiAl0.2Mn1.8O4 cathode materials on high temperature cycling

被引：62

作者：

Sun, YK ^{[1
]}

Yoon, CS

Kim, CK

Youn, SG

Lee, YS

Yoshio, M

Oh, IH

机构：

[1] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea

[2] Hanyang Univ, Div Mat Sci & Engn, Seoul 133791, South Korea

[3] Saga Univ, Dept Appl Chem, Saga 840, Japan

[4] Korea Inst Sci & Technol, Div Chem Engn, Seoul 130650, South Korea

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2001年 / 11卷 / 10期

关键词：

D O I：

10.1039/b103709a

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：

The structural degradation of the Al-doped spinel material, LiAl0.2Mn1.8O4, before and after charge-discharge cycling in the 4 V region at elevated temperature has been studied by X-ray diffraction and high-resolution transmission electron microscopy. The capacity loss during cycling was noticeably increased with cell operation temperature from 50 to 80 degreesC. The formation of tetragonal Li(2)Mn2O(4) and the rocksalt phase Li2MnO3 in the spinel electrode cycled at elevated temperature could be responsible for the main cause of the capacity loss.

引用

页码：2519 / 2522

页数：4

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