Structural and electronic features of Sb-based electrode materials:: 121Sb Mossbauer spectrometry

被引：11

作者：

Ionica, CM ^{[1
]}

Aldon, L ^{[1
]}

Lippens, PE ^{[1
]}

Morato, F ^{[1
]}

Olivier-Fourcade, J ^{[1
]}

Jumas, JC ^{[1
]}

机构：

[1] Univ Montpellier 2, CNRS, UMR 5072, Lab Agregats Mol & Mat Inorgan, F-34095 Montpellier 5, France

来源：

HYPERFINE INTERACTIONS | 2004年 / 156卷 / 01期

关键词：

electrode materials; lithium insertion mechanism; antimony-based compounds; Sb-121 Mossbauer data;

D O I：

10.1023/B:HYPE.0000043277.88328.4f

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Lithium insertion mechanisms in two antimony based compounds: CoSb3 and CoSb have been studied by means of Sb-121 Mossbauer spectrometry. Structural and electronic modifications induced by insertion of lithium have been characterised for different depths of discharge. In all cases the insertion mechanisms can be described from several steps. In the first step antimony is partially dispersed in the metallic matrix with amorphisation of the electrode material and in a second step we can observe the alloy forming (Li3Sb). However this amorphous alloy remains in interaction with the matrix allowing then a good reversibility.

引用

页码：555 / 561

页数：7

共 17 条

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