Investigation of interfacial processes in graphite thin film anodes of lithium-ion batteries by both in situ and ex situ infrared spectroscopy

被引：0

作者：

LI JunTao ^{[1
]}

SU Hang ^{[2
,3
]}

HUANG Ling ^{[2
,3
]}

SUN ShiGang ^{[1
,2
,3
]}

机构：

[1] School of Energy Research, Xiamen University

[2] State Key Laboratory of Physical Chemistry of Solid Surfaces

[3] Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University

来源：

Science China(Chemistry) | 2013年 / 56卷 / 07期

关键词：

graphite anode; interfacial process; FTIR spectroscopy; lithium-ion battery;

D O I：

暂无

中图分类号：

TM912 [蓄电池];

学科分类号：

0808 ;

摘要：

Graphite thin film anodes with a high IR reflectivity have been prepared by a spin coating method. Both ex situ and in situ microscope FTIR spectroscopy (MFTIRS) in a reflection configuration were employed to investigate interfacial processes of the graphite thin film anodes in lithium-ion batteries. A solid electrolyte interphase layer (SEI layer) was formed on the cycled graphite thin film anode. Ex situ MFTIRS revealed that the main components of the SEI layer on cycled graphite film anodes in 1 mol L -1 LiPF6 /ethylene carbonate + dimethyl carbonate (1:1) are alkyl lithium carbonates (ROCO2 Li). The desolvation process on graphite anodes during the initial intercalation of lithium ion with graphite was also observed and analyzed by in situ MFTIRS.

引用

页码：992 / 996

页数：5

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