Study of Co-Sn and Ni-Sn alloys prepared in molten chlorides and used as negative electrode in rechargeable lithium battery

被引：32

作者：

Groult, H. ^{[1
]}

El Ghallali, H. ^{[2
]}

Barhoun, A. ^{[2
]}

Briot, E.

Julien, C. M.

Lantelme, F.

Borensztjan, S. ^{[3
]}

机构：

[1] Univ Paris 06, CNRS, UPMC,PECSA, Case 51,UMR 7195, F-75005 Paris, France

[2] Univ Abdelmalek Essaudi, Fac Sci, LPCIE, Tetouan 93000, Morocco

[3] Univ Paris 06, CNRS, UPMC, Lab Interfaces & Syst Electrochim,LISE,UPR 15, F-75005 Paris, France

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 06期

关键词：

Tin alloys; Lithium battery; Molten LiCl-KCl; Electrodeposition; X-RAY-DIFFRACTION; LI-ION BATTERIES; SECONDARY BATTERIES; THIN-FILM; INSERTION ELECTRODE; ANODE MATERIAL; TIN; SYSTEM; ETA'-CU6SN5; COMPOSITES;

D O I：

10.1016/j.electacta.2010.12.015

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Ni3Sn2 and several Co-Sn alloys prepared by electrodeposition in molten LiCl-KCl were studied as anode materials in rechargeable Li-ion battery. In the case of Ni3Sn2, the charge-discharge curves do not exhibit any plateau in contrast with Co-Sn alloys. For Ni3Sn2, the reversible capacity and the coulombic efficiency tend to constant values of about 225 mAh/g and 85%, respectively, after subsequent cycles. Among the studied Co-Sn alloys, the best electrochemical performances was observed when CoSn2 was used as anode material: the reversible capacity and the coulombic efficiency observed after 60 cycles were about 530 mAh/g and 96%, respectively. Whatever the alloys. SEM investigations performed before and after cycling do not reveal any significant difference between the original material and the cycled material, indicating a good stability of the electrodeposited films upon cycling. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2656 / 2664

页数：9

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