Electrochemical impedance spectroscopy study of SnO and nano-SnO anodes in lithium rechargeable batteries

被引：114

作者：

Li, H ^{[1
]}

Huang, XJ ^{[1
]}

Chen, LQ ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Lab Solid State Ion, Beijing 100080, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 1999年 / 81卷

基金：

中国国家自然科学基金;

关键词：

SnO anodes; nanometer anodes; impedance spectroscopy; passivating film;

D O I：

10.1016/S0378-7753(99)00214-1

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：

Nano-SnO and normal SnO anodes for Lithium rechargeable batteries have been investigated by electrochemical impedance spectroscopy (EIS). Three types of equivalent circuits have been used to fit the spectra at different discharge states. The variations of impedance spectra, charge-transfer resistance and double layer capacitance have been discussed. The electrochemical reaction mechanism of SnO anode for Lithium ion batteries can be deduced as follows: a passivating film forms on the surface of SnO particles firstly, then Lif ions pass through the surface film and react with SnO to produce amorphous Li2O and to form fine grains of Li-Sn alloys in the core region underneath the passivating film. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：340 / 345

页数：6

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