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Type: Journal article
Title: Hydrothermal growth of MnO₂/RGO/Ni(OH)₂ on nickel foam with superior supercapacitor performance
Other Titles: Hydrothermal growth of MnO(2)/RGO/Ni(OH)(2) on nickel foam with superior supercapacitor performance
Author: Min, S.
Zhao, C.
Zhang, Z.
Wang, K.
Chen, G.
Qian, X.
Guo, Z.
Citation: RSC Advances: an international journal to further the chemical sciences, 2015; 5(77):62571-62576
Publisher: Royal Society of Chemistry
Issue Date: 2015
ISSN: 2046-2069
Statement of
Shudi Min, Chongjun Zhao, Zhuomin Zhang, Kun Wang, Guorong Chen, Xiuzhen Qiana and Zaiping Guo
Abstract: A MnO2/reduced graphene oxide (RGO)/Ni(OH)2 composite with arrays of mushroom-headed needle-like nanostructures on its top surface was designed and directly grown on nickel foam through a one-pot hydrothermal process without the addition of any source of extra Ni ions. Based on the redox reaction of elemental Ni and graphene oxide (GO), along with electrostatic forces between Mn ions from the solution and GO, there was good contact and strong interaction between the different components, as well as between the active materials and the Ni substrate. Hence, the as-synthesized MnO2/RGO/Ni(OH)2 composite can be utilized as a supercapacitor electrode with a high areal mass loading of 5.4 mg cm−2. It exhibits superior performance: 17.8 F cm−2 (i.e., 3296.9 F g−1) at 7 mA cm−2 (1.3 A g−1), as well as a capacity retention of 90.2%, even after 5000 cycles at 20 mA cm−2 (3.7 A g−1).
Rights: This journal is © The Royal Society of Chemistry 2015
DOI: 10.1039/c5ra10842j
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Chemistry and Physics publications

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