文献类型：期刊文献

英文题名：Hydrothermal growth of MnO2/RGO/Ni(OH)2 on nickel foam with superior supercapacitor performance

作者：Min, Shudi[1,2];Zhao, Chongjun[1];Zhang, Zhuomin[1];Wang, Kun[1];Chen, Guorong[1];Qian, Xiuzhen[1];Guo, Zaiping[2]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

年份：2015

卷号：5

期号：77

起止页码：62571

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20153101096686);WOS:【SCI-EXPANDED(收录号:WOS:000358620100027)】；

基金：We are grateful for the support of the National Natural Science Foundation of China (No. 20504026), the Shanghai Natural Science Foundation (No. 13ZR1411900), the Shanghai Leading Academic Discipline Project (B502), the Shanghai Key Laboratory Project (08DZ2230500), the Australian Research Council (ARC) through an ARC Discovery project (DP1094261), and the China Scholarship Council. The authors would like to thank Dr T. Silver for critical reading of the manuscript.

语种：英文

外文关键词：Supercapacitor - Manganese oxide - Foams - Nickel oxide - Redox reactions

摘要：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)).