Paper Title:
Investigation on Lithiation Mechanism of Interphase Ni3Sn4 Alloy Used as Anode Material for Lithium-Ion Batteries
  Abstract

Sn-based anode materials have poor cycling performance due to mechanical fatigue caused by volume expansion during lithium insertion and extraction processes. In this work, the mechanism of lithium insertion/extraction in the Ni3Sn4 alloy electrode is investigated using the first-principle plane-wave pseudopotential and experimnetal method. The calculated results indicate that the Ni3Sn4 alloy phase has relatively minor expansion ratio and fluctuating electrochemical potential, which the tendency is consistent with the experimental result. On the other hand, the Sn-Ni alloy thin films with different tin content are prepared by electrodepostion on copper as an anode for lithium-ion batteries. The structural and electrochemical characteristics of Sn-Ni alloy are examined using X-ray diffraction (XRD) and repeated constant current charge/discharge (CC). The results show Tthheat Ni3Sn4 alloy phase has best cyclic stability during the lithium insertion and extraction processes.

  Info
Periodical
Materials Science Forum (Volumes 610-613)
Main Theme
Edited by
Zhongwei Gu, Yafang Han, Fusheng Pan, Xitao Wang, Duan Weng and Shaoxiong Zhou
Pages
506-511
DOI
10.4028/www.scientific.net/MSF.610-613.506
Citation
X. H. Hou, S. J. Hu, H. W. Yu, L. Z. Zhao, Q. Ru, C. L. Tan, W. S. Li, "Investigation on Lithiation Mechanism of Interphase Ni3Sn4 Alloy Used as Anode Material for Lithium-Ion Batteries", Materials Science Forum, Vols. 610-613, pp. 506-511, 2009
Online since
January 2009
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$32.00
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