WANG Yong-zhen, WANG Yan, HAN Fei, CAI Xiao-lan. The effect of heat treatment on the electrical conductivity of highly conducting graphene films. New Carbon Mater., 2012, 27(04): 266-270.
Citation:
WANG Yong-zhen, WANG Yan, HAN Fei, CAI Xiao-lan. The effect of heat treatment on the electrical conductivity of highly conducting graphene films. New Carbon Mater., 2012, 27(04): 266-270.
WANG Yong-zhen, WANG Yan, HAN Fei, CAI Xiao-lan. The effect of heat treatment on the electrical conductivity of highly conducting graphene films. New Carbon Mater., 2012, 27(04): 266-270.
Citation:
WANG Yong-zhen, WANG Yan, HAN Fei, CAI Xiao-lan. The effect of heat treatment on the electrical conductivity of highly conducting graphene films. New Carbon Mater., 2012, 27(04): 266-270.
Funds:
National Natural Science Foundation of China(51172152), Key Project of Ministry of Education of China (200918) and Science Research Project in Shanxi Province (20090321031).
WANG Yong-zhen(1967-), male, Aassociate Professor, engaged in research of graphene and its application. Tel: +86-351-6011757, E-mai: wangyongzhen@tyut.edu.cn
Graphene oxide films were prepared by the modified Hummers method, which includes sonication, aggregation and self-assembly. The graphene films were obtained by vacuum heat treatment of the graphene oxide films. XRD, SEM, FTIR and Raman spectroscopy were used to investigate the microstructure evolution of the films during preparation. It is found that self-assembly is a simple method to produce graphene oxide films with controllable size and perfect stacks of graphene oxide layers. Heat treatment gives the graphene films high electrical conductivities. The electrical conductivity of the films increases up to 536S/cm with increasing heat treatment temperature under vacuum.
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