Journal
NANOSCALE RESEARCH LETTERS
Volume 8, Issue -, Pages -Publisher
SPRINGER
DOI: 10.1186/1556-276X-8-473
Keywords
Zinc oxide nanorods; Graphene nanosheets; Solid-state supercapacitor
Funding
- National Natural Science and Henan Province United Foundation of China [U1204601, 51072063]
- Natural Science Foundation of Henan Province [122300410298]
- Natural Science Foundation of Education Department of Henan Province [13A480365]
- PhD Foundation of Zhengzhou University of Light Industry [2010 BSJJ 029]
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In this paper, we report a facile low-cost synthesis of the graphene-ZnO hybrid nanocomposites for solid-state supercapacitors. Structural analysis revealed a homogeneous distribution of ZnO nanorods that are inserted in graphene nanosheets, forming a sandwiched architecture. The material exhibited a high specific capacitance of 156 F g(-1) at a scan rate of 5 mV.s(-1). The fabricated solid-state supercapacitor device using these graphene-ZnO hybrid nanocomposites exhibits good supercapacitive performance and long-term cycle stability. The improved supercapacitance property of these materials could be ascribed to the increased conductivity of ZnO and better utilization of graphene. These results demonstrate the potential of the graphene-ZnO hybrid nanocomposites as an electrode in high-performance supercapacitors.
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