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Issue 10, 2001
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Degradation mechanism of spinel LiAl0.2Mn1.8O4 cathode materials on high temperature cycling

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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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Publication details

The article was received on 25 Apr 2001, accepted on 20 Jun 2001 and first published on 16 Aug 2001


Article type: Paper
DOI: 10.1039/B103709A
Citation: 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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