期刊
JOURNAL OF POWER SOURCES
卷 203, 期 -, 页码 243-249出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2011.11.055
关键词
Reduced graphene oxide; Nickel oxide; Supercapacitors; Homogeneous coprecipitation
资金
- Natural Science Foundation of Hubei Province [2011CDB161]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (SRF for ROCS, SEM)
Reduced graphene oxide and NiO composite is prepared by homogeneous coprecipitation and subsequent annealing. Characterizations show that NiO particles have a nanosheet-based microsphere structure and anchor uniformly on the surface of reduced graphene oxide platelets. The RG-O/NiO-based supercapacitors exhibit high specific capacitance of 770 F g(-1), and enhanced rate capability. It is found that the electrochemical performance can be enhanced by anchoring NiO particles on the surface of RG-O platelets in the RG-O/NiO composite. This method provides a facile and straightforward approach to distribute NiO nanoparticles onto the surface of RG-O sheets and can be extended to the preparation of other RG-O/metal oxides composite for electrochemical energy storage. (C) 2011 Elsevier B.V. All rights reserved.
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