Characterization of SEI layers on LiMn2O4 cathodes with in situ spectroscopic ellipsometry

被引：80

作者：

Lei, JL ^{[1
]}

Li, LJ ^{[1
]}

Kostecki, R ^{[1
]}

Muller, R ^{[1
]}

McLarnon, F ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2005年 / 152卷 / 04期

关键词：

D O I：

10.1149/1.1867652

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In situ spectroscopic ellipsometry was employed to study the initial stage of solid electrolyte interphase (SEI) layer formation on thin-film LiMn2O4 electrodes. The SEI layer formed immediately upon exposure of the electrode to ethylene carbonate/dimethyl carbonate (1:1 by vol) 1.0 M LiPF6 electrolyte. The SEI layer thickness then increased in proportion to a logarithmic function of elapsed time. In comparison, the SEI layer thickness on a cycled electrode increased in proportion to a linear function of the number of cycles. (c) 2005 The Electrochemical Society.

引用

页码：A774 / A777

页数：4

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