Electrochemistry of CuxSi1-x Alloys in Li Cells

被引：21

作者：

Du, Zhijia ^{[1
]}

Liu, Hui ^{[2
,3
]}

Ellis, S. N. ^{[2
]}

Dunlap, R. A. ^{[1
,4
,5
]}

Zhu, M. ^{[3
]}

Obrovac, M. N. ^{[1
,2
,4
]}

机构：

[1] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 4R2, Canada

[2] Dalhousie Univ, Dept Chem, Halifax, NS B3H 4R2, Canada

[3] S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China

[4] Dalhousie Univ, Inst Mat Res, Halifax, NS B3H 4R2, Canada

[5] Dalhousie Univ, Coll Sustainabil, Halifax, NS B3H 4R2, Canada

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2016年 / 163卷 / 07期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

COMBINATORIAL INVESTIGATIONS; ELECTRODE MATERIALS; ION BATTERIES; TI-SI; SILICON; ANODE; COMPOSITE; SYSTEM; SI/CU; NI;

D O I：

10.1149/2.0811607jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The structure and electrochemistry in lithium cells of sputtered thin films and ball milled alloys in the Cu-Si system (0 <= x <= 0.60 in CuxSi1-x) were investigated. Both thin films and ball milled Cu-Si alloys showed the co-existence of amorphous Si and a nanocrystalline Cu3Si phase. The lithiation potential of Cu-Si alloys was found to be significantly shifted to potentials below that of pure Si. In addition, the Cu3Si phase was found to be involved in the electrochemical reaction of the alloys with lithium, however not all of the Si could be reacted with Li to its full theoretical extent. This suggests that a ternary Cu-Li-Si phase may be formed at full lithiation of these alloys. (C) The Author(s) 2016. Published by ECS. All rights reserved.

引用

页码：A1275 / A1279

页数：5

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