A RAMAN MICROPROBE INSITU AND EXSITU STUDY OF FILM FORMATION AT LITHIUM ORGANIC ELECTROLYTE INTERFACES

被引：65

作者：

ODZIEMKOWSKI, M

KRELL, M

IRISH, DE

机构：

[1] Department of Chemistry, University of Waterloo

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1992年 / 139卷 / 11期

关键词：

D O I：

10.1149/1.2069032

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Surface films formed on lithium metal in contact with THF and 2Me-THF solutions of LiAsF6, were analyzed with in situ and ex situ Raman microspectroscopy. The main reaction product detected by in situ Raman spectroscopy in LiAsF6/THF electrolyte was polytetrahydrofuran (PTHF). The conditions for the polymerization reaction in the presence of lithium metal have been determined. THF decomposition reaction mechanisms are discussed. The formation of a brown film on the lithium surface was observed in both solvents. This brown film appears to be thermodynamically unstable, moisture and laser sensitive. Decomposition reaction products have been determined as arsenolite (As2O3) and arsenious oxyfluorides F2As-O-AsF2.

引用

页码：3052 / 3063

页数：12

共 52 条

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