Acta Metallurgica Sinica (English Letters) ›› 2010, Vol. 23 ›› Issue (5): 363-369.DOI: 10.11890/1006-7191-105-363

• 研究论文 • 上一篇    下一篇

Study of Lithium storage properties of the Sn-Ni alloys prepared by magnetic sputtering technology

侯贤华1,胡社军2   

  1. 1. 华南师范大学
    2.
  • 收稿日期:2010-05-21 修回日期:2010-07-26 出版日期:2010-10-25 发布日期:2010-10-14
  • 通讯作者: 侯贤华

Study of lithium storage properties of the Sn-Ni alloys prepared by magnetic sputtering technology

Xianhua HOU, Shejun HU, Wei PENG, Zhiwen ZHANG, Qiang RU   

  1. School of Physics and Telecommunication Engineering, South China Normal University,Guangzhou 510006, China
  • Received:2010-05-21 Revised:2010-07-26 Online:2010-10-25 Published:2010-10-14
  • Contact: Shejun HU

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关键词: 锂离子电池, Sn-Ni 合金, 电化学性能 lithium ion battery, Sn-Ni alloy, electrochemical property

Abstract: Nano-level Sn-Ni alloy thin-film electrode materials prepared by magnetic sputtering technology are characterized with X-ray diffraction (XRD), atom force microscopy (AFM) and scanning electron microscopy (SEM). The charge/discharge and cyclic voltammograms (CV) of the films electrodes are tested by the battery testing system of high precision. The results indicate that the materials prepared by direct current (DC) and radio frequency (RF) methods differ greatly in their performance. Ni3Sn2 alloy phase constitutes the main components prepared by DC method, the particles on the surface are tiny and show steady cycling performance, the deficiency is that they have low initial efficiency and small discharge capacity of 72 % and 108 mA.h/g, respectively. Contrary to the former, Ni3Sn4 alloy phase constitutes the main components prepared by RF method, the particles on the surface appear comparatively larger, their discharge capacity did not decline in the first 15 times, keeping above 500 mA·h/g, but began to decline after 15 times.

Key words: Lithium ion battery, Sn-Ni alloy, Electrochemical property