https://doi.org/10.1051/epjap/2014140086
Fabrication of flexible graphene paper and its electrochemical properties used in lithium ion batteries
School of Minerals Processing and Bioengineering, Central South University, Changsha
410083, P.R. China
a e-mail: lxwdr@csu.edu.cn
Received:
2
March
2014
Revised:
29
April
2014
Accepted:
2
May
2014
Published online:
10
June
2014
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.
© EDP Sciences, 2014
