Journal of Zhejiang University-SCIENCE A

, Volume 5, Issue 4, pp 418–421 | Cite as

Electrochemical properties of CoFe3Sb12 as potential anode material for lithium-ion batteries

  • Zhao Xin-bing 
  • Zhong Yao-dong 
  • Cao Gao-shao 
Chemical & Material Science

Abstract

A skutterudite-related antimonide, CoFe3Sb12, was prepared with vacuum melting. XRD analysis showed the material contained Sb, FeSb2, CoSb2 and CoSb3 phases. The electrochemical properties of the ball-milled CoFe3Sb12−10 wt% graphite composite were studied using pure lithium as the reference electrode. A maximal lithium inserting capacity of about 860 mAh/g was obtained in the first cycle. The reversible capacity of the material was about 560 mAh/g in the first cycle and decreased toca. 320 mAh/g and 250 mAh/g after 10 and 20 cycles respectively.Ex-situ XRD analyses showed that the antimonides in the pristine material were decomposed after the first discharge and that antimony was the active element for lithium to insert into the host material.

Key words

CoFe3Sb12 Anode materials Lithium-ion batteries Electrochemical properties 

Document code

CLC number

TQ150.9 O646.5 X783 

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Copyright information

© Zhejiang University Press 2004

Authors and Affiliations

  • Zhao Xin-bing 
    • 1
  • Zhong Yao-dong 
    • 1
  • Cao Gao-shao 
    • 1
  1. 1.Department of Materials Science and EngineeringZhejiang UniversityHangzhouChina

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