Surface Films Formed on SnO_2 Anode in Lithium Secondary Batteries by FTIR Spectroscopy

作     者：黄峰 HUANG Feng1, ZHOU Yunhong2, ZHAN Hui2, LU Xiangzhong1 1. Hubei Refractories and High-temperature Ceramics Key Laboratory, Wuhan University of Science and Technology, Wuhan 430081, China;2. College of Chemical & Molecular Science, Wuhan University, Wuhan 430072, China

作者机构：Hubei Refractories and High-temperature Ceramics Key Laboratory Wuhan University of Science and Technology 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2008年第23卷第5期

页      面：662-665页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the Natural Science Foundation of Hubei Provine (No.2007ABA320) National 973 Key Program 

主　　题：nano-SnO2 anode lithium rechargeable batteries FTIR passivating layer 

摘      要：The chemical composition of the passivating layer formed on nano SnO2 anodes in 1 M LiClO4＋ （ethylene carbonate）EC ＋ （dimethyl carbonate）DMC at different charge/discharge states in lithium secondary batteries was studied using extra reflectance FTIR spectra. Results show that solvent decomposition reaction that generally occurs on the surface of carbon and alkali metal electrodes also takes place on nano-SnO2 anode, and the major constituent of the passivating layer is Li2CO3 and ROCO2Li. Formation of the passivating layer would certainly lead to the irreversible capacity loss.