Issue 10, 2001
From the journal:

Journal of Materials Chemistry

Y.-K. Sun,*a   C. S. Yoon,b   C. K. Kim,b   S. G. Youn,b   Y.-S. Lee,c   M. Yoshioc  and  I.-H. Ohd  

* Corresponding authors

a Department of Chemical Engineering, Hanyang University, Seoul, Korea
E-mail: yksun@hanyang.ac.kr

b Division of Materials Science and Engineering, Hanyang University, Seoul, Korea

c Department of Applied Chemistry, Saga University, Saga, Japan

d Division of Chemical Engineering, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Korea

Abstract

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 °C. The formation of tetragonal Li2Mn2O4 and the rocksalt phase Li2MnO3 in the spinel electrode cycled at elevated temperature could be responsible for the main cause of the capacity loss.

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

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Article information

DOI
https://doi.org/10.1039/B103709A
Article type
Paper
Submitted
25 Apr 2001
Accepted
20 Jun 2001
First published
16 Aug 2001

J. Mater. Chem., 2001,11, 2519-2522

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

Y.-K. Sun, C. S. Yoon, C. K. Kim, S. G. Youn, Y.-S. Lee, M. Yoshio and I.-H. Oh, J. Mater. Chem., 2001, 11, 2519 DOI: 10.1039/B103709A

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