Raman spectro-electrochemistry of LiCoxMn2-xO4 thin film electrodes for 5 V lithium batteries

被引：45

作者：

Dokko, K

Anzue, N

Mohamedi, M

Itoh, T ^{[1
]}

Uchida, I

机构：

[1] Tohoku Univ, Interdisciplinary Res Ctr, Aoba Ku, Sendai, Miyagi 9808578, Japan

[2] Tohoku Univ, Dept Appl Chem, Aoba Ku, Sendai, Miyagi 9808578, Japan

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2004年 / 6卷 / 04期

关键词：

in situ Raman spectroscopy; 5 V lithium batteries; lithium manganese oxide; thin film electrode;

D O I：

10.1016/j.elecom.2004.02.005

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Raman spectra of thin films of LiCoxMn2-xO4 (0 < x < 1) were recorded in a mixture of ethylene carbonate and dimethyl carbonate (1:1 by volume) containing 1 M LiBF4 at electrode potentials of 3.5-5.5 V. The thin film electrodes were fabricated on gold substrates by electrostatic spray deposition (ESD). The in situ Raman spectra exhibited changes correlatable with the crystallographic structure and oxidation state of manganese and cobalt. The spectral changes were reversible by changing the electrode potential, indicating that lithium ion extraction and insertion proceeds in a reversible manner. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：384 / 388

页数：5

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