Electric Papers of Graphene-Coated Co3O4 Fibers for High-Performance Lithium-Ion Batteries

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• 作者：Xiaoling Yang ; Kaicai Fan ; Yihua Zhu ; Jianhua Shen ; Xin Jiang ; Peng Zhao ; Shaorong Luan ; Chunzhong Li
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2013
• 出版时间：February 13, 2013
• 年：2013
• 卷：5
• 期：3
• 页码：997-1002
• 全文大小：379K
• 年卷期：v.5,no.3(February 13, 2013)
• ISSN：1944-8252

文摘

A facile strategy to synthesize the novel composite paper of graphene nanosheets (GNS) coated Co₃O₄ fibers is reported as an advanced anode material for high-performance lithium-ion batteries (LIBs). The GNS were able to deposit onto Co₃O₄ fibers and form the coating via electrostatic interactions. The unique hybrid paper is evaluated as an anode electrode for LIBs, and it exhibits a very large reversible capacity (840 mA h g^鈥? after 40 cycles), excellent cyclic stability and good rate capacity. The substantially excellent electrochemical performance of the graphene/Co₃O₄ composite paper is the result from its unique features. Notably, the flexible structure of graphenic scaffold and the strong interaction between graphene and Co₃O₄ fibers are beneficial for providing excellent electronic conductivity, short transportation length for lithium ions, and elastomeric space to accommodate volume varies upon Li⁺ insertion/extraction.

Keywords:

graphene paper; Co₃O₄ fiber; anode; lithium-ion batteries