LiCoO2 electrode/electrolyte interface of Li-ion rechargeable batteries investigated by in situ electrochemical impedance spectroscopy

被引：97

作者：

Itagaki, M ^{[1
]}

Kobari, N

Yotsuda, S

Watanabe, K

Kinoshita, S

Ue, M

机构：

[1] Tokyo Univ Sci, Fac Sci & Technol, Dept Pure & Appl Chem, Noda, Chiba 2788510, Japan

[2] Mitsubishi Chem Grp, Sci & Technol Res Ctr, Ibaraki 3000332, Japan

来源：

JOURNAL OF POWER SOURCES | 2005年 / 148卷

关键词：

Li-ion rechargeable battery; LiCoO2; EIS; SEI; vinylene carbonate; ethylene sulfite;

D O I：

10.1016/j.jpowsour.2005.02.007

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：

An in situ electrochemical impedance spectroscopy was applied to the investigation of LiCoO2 electrode in ethylene and ethyl methyl carbonates electrolyte. The electrode impedance was plotted on the three-dimensional diagram, which has real, imaginary and time axes, with the measurements of the charge (deintercalation) and discharge (intercalation) curves. The formation of the solid electrolyte interface (SEI) on LiCoO2 electrode was discussed by the variation of impedance spectra. It was found that the SEI structure was constructed on LiCoO2 electrode and its resistance changed by the reversible process. Moreover, the effects of vinylene carbonate and ethylene sulfite as additives into the electrolyte were investigated. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：78 / 84

页数：7

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