文献类型：期刊文献

英文题名：One-pot Hydrothermal Synthesis of 3D Flower-like RGO/CO3O4/Ni(OH)2 Composite Film on Nickel Foam for High-performance Supercapacitors

作者：Min, Shudi[1];Zhao, Chongjun[1];Chen, Guorong[1];Zhang, Zhuomin[1];Qian, Xiuzhen[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2014

卷号：135

起止页码：336

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20142417814915);WOS:【SCI-EXPANDED(收录号:WOS:000339692600045)】；

基金：We are grateful for the support of the National Natural Science Foundation of China (No.20504026), Shanghai Natural Science Foundation (No. 13ZR1411900), Shanghai Leading Academic Discipline Project (B502), and Shanghai Key Laboratory Project (08DZ2230500), EU FP7 Staff Exchange program (No. PIRSES-GA-2012-318990-ELEKTRONANOMAT).

语种：英文

外文关键词：Reduced graphene oxide/Cobaltosic; oxide/Nickel hydroxide composites; Nickel foam; Hydrothermal process; Redox reaction; Supercapacitors

摘要：Reduced graphene oxide (RGO)/Co3O4/Ni(OH)(2) composites on nickel foam (NF) were hydrothermal-assisted synthesized by using a modified "active metal substrate" route, in which nickel foam acted as both a reductant of GO and Ni source, and a substrate for composite film. As-synthesized samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscope (FESEM), and transmission electron microscopy (TEM). The electrochemical performances of the supercapacitor with the as-synthesized RGO/Co3O4/Ni(OH)(2)/NF electrodes are evaluated using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectrometry (EIS) in 1 M KOH aqueous solution. It is found that the RGO/Co3O4/Ni(OH)(2) /NF electrode exhibits superior capacitive performance with high capability (10.24 F cm(-2) at a current density of 11 mA cm(-2), i.e., 2133.3 F g(-1) at 2.3 A g(-1)), compared with the Co3O4/Ni(OH)(2) /NF electrode (1.71 F cm(-2)) and the RGO/Ni(OH)(2)/NF electrode (0.95 F cm(-2)) prepared under identical conditions. (C) 2014 Elsevier Ltd. All rights reserved.