In situ microscope FTIR spectroscopic studies of interfacial reactions of Sn-Co alloy film anode of lithium ion battery

被引：49

作者：

Li, Jun-Tao ^{[1
,2
]}

Chen, Shu-Ru ^{[1
]}

Ke, Fu-Sheng ^{[1
]}

Wei, Guo-Zhen ^{[1
]}

Huang, Ling ^{[1
]}

Sun, Shi-Gang ^{[1
]}

机构：

[1] Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Sch Energy Res, Xiamen 361005, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2010年 / 649卷 / 1-2期

关键词：

In situ MFTIRS; Interfacial reactions; Sn-Co alloy thin film; Anode; SEI layer; Lithium ion battery; ORGANIC ELECTROLYTE-SOLUTIONS; ETHYLENE CARBONATE; LI-ION; TIN; SOLVATION; MIXTURES; GRAPHITE; LAYER; EQCM;

D O I：

10.1016/j.jelechem.2010.03.032

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Sn-Co alloy thin films with high IR reflectivity were prepared by electroplating on a copper substrate and served as anodes of lithium ion battery The interfacial properties of the Sn-Co alloy anode in an electrolyte of 1 M LiPF(6)/EC + DMC (1 1 vol %) during discharge/charge (or lithiation/delithiation) processes were investigated by using in situ microscope Fourier transform Infrared reflection spectroscopy (in situ MFTIRS) The results demonstrated that the solvation/desolvation reactions of lithium ions with solvent molecules in discharge/charge processes vary with the concentration of both solvated and free solvent molecules leading to the shift of C=O C-O and C-H IR bands The effect of solvation/desolvation which provides a possibility to probe the lithiation/delithiation processes by in situ MFTIRS is observed and analyzed clearly The solid electrolyte interphase (SEI) layer on a cycled Sn-Co alloy anode has also been investigated by ex situ MFTIRS which determined that the main chemical composition of the SEI layer is ROCO(2)Li The current studies are of significance in understanding the interfacial reactions involving in lithium ion battery at molecular level (C) 2010 Elsevier B V All rights reserved

引用

页码：171 / 176

页数：6

共 29 条

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