Self-assembly of a CoFe sub(2)O sub(4)/graphene sandwich by a controllable and general route: towards a high-performance anode for Li-ion batteries

A CoFe sub(2)O sub(4)-nanocrystal/g raphene-nanosheet (CFO/GS) nanohybrid has been synthesized by a facile in situsolvothermal route and has been investigated as a promising high-performance anode material for Li-ion batteries. The crystal size of CoFe sub(2)O sub(4) can be controlled to 10-20 nm by...

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Bibliographic Details
Published in:Journal of materials chemistry 2012-08, Vol.22 (37), p.19738-19743
Main Authors: Liu, Shuangyu, Xie, Jian, Fang, Chengcheng, Cao, Gaoshao, Zhu, Tiejun, Zhao, Xinbing
Format: Article
Language:English
Subjects:
Anodes
Batteries
Graphene
Nanocomposites
Nanomaterials
Nanostructure
Self assembly
Stability
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Summary:A CoFe sub(2)O sub(4)-nanocrystal/g raphene-nanosheet (CFO/GS) nanohybrid has been synthesized by a facile in situsolvothermal route and has been investigated as a promising high-performance anode material for Li-ion batteries. The crystal size of CoFe sub(2)O sub(4) can be controlled to 10-20 nm by pre-treating the precursors before the solvothermal reactions. The method for synthesizing the CFO/GS hybrid can be extended to synthesize MFe sub(2)O sub(4)/graphene (MFe sub(2)O sub(4)/G, M = Mn and Ni) hybrids. The CFO/GS hybrid exhibits superior cycling stability and rate capability compared to bare CoFe sub(2)O sub(4). The improved electrochemical performance can be attributed to a combination of the conducting, confining and dispersing effects of graphene.
ISSN:0959-9428
1364-5501
DOI:10.1039/c2jm34019d