In situ Raman spectroscopic study of LixCoO2 electrodes in propylene carbonate solvent systems

被引：75

作者：

Itoh, T ^{[1
]}

Sato, H ^{[1
]}

Nishina, T ^{[1
]}

Matue, T ^{[1
]}

Uchida, I ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Appl Chem, Aoba Ku, Sendai, Miyagi 98077, Japan

来源：

JOURNAL OF POWER SOURCES | 1997年 / 68卷 / 02期

关键词：

Raman spectroscopy; cobalt; lithium secondary batteries; optical skin depth; lithium intercalation; lithium insertion;

D O I：

10.1016/S0378-7753(97)02539-1

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：

Simultaneous measurements of in situ Raman spectroscopy and cyclic voltammetry have been carried out for thin film electrodes of LixCoO2 in propylene carbonate containing 1 M LiClO4. The Raman lines of 485 and 587 cm(-1) observed at LixCoO2 electrodes were attributed to the A(1g) and E-g modes of the LiCoO2, respectively. The Raman intensity of two lines changed drastically during the insertion/extraction of lithium ions. This effect can be explained by the reduction of the optical skin depth due to the conductivity change of LixCoO2. Phase transition from Raman-active phase to Raman-inactive phase is also conceivable. (C) 1997 Elsevier Science S.A.

引用

页码：333 / 337

页数：5

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