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CoSn phase: Crystal structure resolving and stable high capacity as anodes for Li ion batteries

Journal of Physical Chemistry Letters, ISSN: 1948-7185, Vol: 3, Issue: 11, Page: 1488-1492
2012
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Article Description

Tin alloys form a class of interesting high-energy-density anode materials for Li ion batteries, but the improvement of their cycling stability is elusive. Here, we provide new insight on this fatal issue by synthesizing novel CoSn -phase nanospheres via a conversion chemistry route and directly comparing their cell behavior with that of recently found FeSn -phase nanospheres. The CoSn phase is absent in previous Co-Sn phase diagrams. Co Sn nanospheres show a much longer cycle life, which partially is related to milder evolution of their cycling profiles over time. © 2012 American Chemical Society.

Bibliographic Details

Wang, Xiao-Liang; Chen, Haiyan; Bai, Jianming; Han, Wei-Qiang

American Chemical Society (ACS)

Materials Science; Chemistry

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