Study of Co-Sn and Ni-Sn alloys prepared in molten chlorides and used as negative electrode in rechargeable lithium battery - Sorbonne Université Access content directly
Journal Articles Electrochimica Acta Year : 2011

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

Abstract

Ni(3)Sn(2) 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 Ni(3)Sn(2), the charge-discharge curves do not exhibit any plateau in contrast with Co-Sn alloys. For Ni(3)Sn(2), 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 CoSn(2) 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.

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hal-00825164 , version 1 (23-05-2013)

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H. Groult, H. El Ghallali, A. Barhoun, E. Briot, C.M. Julien, et al.. Study of Co-Sn and Ni-Sn alloys prepared in molten chlorides and used as negative electrode in rechargeable lithium battery. Electrochimica Acta, 2011, 56 (6), pp.2656-2664. ⟨10.1016/j.electacta.2010.12.015⟩. ⟨hal-00825164⟩
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