锂电池中负极表面固体电解质膜的SERS研究

被引：6

作者：

李桂峰

李泓

莫育俊

黄学杰

陈立泉

机构：

[1] 河南大学物理系

[2] 中科院物理所

[3] 中科院物理所开封

[4] 北京

[5] 开封

来源：

光散射学报 | 2002年 / 04期

关键词：

锂电池; 固体电解质膜; 表面增强拉曼光谱;

D O I：

10.13883/j.issn1004-5929.2002.04.009

中图分类号：

O657.37 [拉曼光谱分析法];

学科分类号：

070302 ; 081704 ;

摘要：

本文对锂电池中负极材料表面固体电解质膜 (SEI膜 )的SERS谱进行了研究 :极化低电位下对贵重金属的研究表明 ,非水电解质溶液中痕量水的存在将对SEI膜产生重要影响。在微量水存在的情况下 ,RCOCO2 Li不是SEI膜的稳定成份 ,Li2 CO3、LiF、LiOH或LiOH·H2 O等物种才是其稳定组成。进一步的研究表明 :SEI膜的某些谱带具有不同的光吸收特性 ;它是对外界条件非常敏感的一种表面膜。通过对比分析 ,SEI膜的特征谱带得到了进一步归属 ,并对其形成机理做了讨论。

引用

页码：224 / 230

页数：7

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