XPS study of electrode/electrolyte interfaces of η-Cu6Sn5 electrodes in Li-ion batteries

被引：76

作者：

Naille, S. ^{[1
]}

Dedryvere, R. ^{[2
]}

Martinez, H. ^{[2
]}

Leroy, S. ^{[2
]}

Lippens, P-E. ^{[1
]}

Jumas, J. -C. ^{[1
]}

Gonbeau, D. ^{[2
]}

机构：

[1] Univ Montpellier 2, LAMMI, F-34095 Montpellier 5, France

[2] Univ Pau & Pays Adour, LCTPCM, F-64053 Pau 9, France

来源：

JOURNAL OF POWER SOURCES | 2007年 / 174卷 / 02期

关键词：

XPS; Cu6Sn5; intermetallic alloys; interfaces;

D O I：

10.1016/j.jpowsour.2007.06.043

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Research into new negative electrode materials as an alternative to carbonaceous materials brings new questions about electrode/electrolyte interface mechanisms. For graphite, these mechanisms have great importance on the ageing phenomena. What about intermetallic alloys, such as Cu-Sn systems? The nature of the electrode and its potential of lithium ions uptake (different from graphite) may have a great influence on the passivation film formed at the surface of the electrode. In this paper, we report on the XPS study of the electrode/electrolyte interface of a Cu6Sn5-based electrode. The main difference with graphite is not the nature and composition of the passivation layer, but its poor dependence on the electrochemical reaction during cycling. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1086 / 1090

页数：5

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