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Fabrication of flexible graphene paper and its electrochemical properties used in lithium ion batteries

Published online by Cambridge University Press:  10 June 2014

Xiaowen Liu ,
Huang Zhao ,
Xuemei Huang ,
Yuehua Hu ,
Haiqing Gao ,
Xiaoxu Liu  and
Lingyan Shen
Xiaowen Liu*
Affiliation:
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, P.R. China
Huang Zhao
Affiliation:
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, P.R. China
Xuemei Huang
Affiliation:
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, P.R. China
Yuehua Hu
Affiliation:
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, P.R. China
Haiqing Gao
Affiliation:
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, P.R. China
Xiaoxu Liu
Affiliation:
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, P.R. China
Lingyan Shen
Affiliation:
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, P.R. China
*
ae-mail: [email protected]
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Abstract

Recent studies have shown that graphene paper (GP) is a promising candidate for novel applications in energy storage systems such as electrical batteries and supercapacitors. In this study, a low-cost and free-standing GP was produced by graphene oxide paper (GOP) in the thermal reduction method which heated GOP slowly to 500 °C in a special fixture. In the process of reduction, oxygen functional groups were decomposed and graphene oxide (GO) sheets were reduced to grapene sheets. Moreover, the smooth paper-like structure was maintained by the protection of the special fixture during the heat treatment. The GP paper showed good electrochemical property. The electrical conductivity of the GP reached 182 S cm−1 after the decomposition of oxygen functional groups. The GP as binder-free anodes of lithium ion batteries afforded a capacity of 576 mAh g−1 with good cycling stability.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 66 , Issue 3 , June 2014 , 30301
Copyright
© EDP Sciences, 2014

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