文献类型：期刊文献

英文题名：One-pot hydrothermal synthesis of reduced graphene oxide/Ni(OH)2 films on nickel foam for high performance supercapacitors

作者：Min, Shudi[1];Zhao, Chongjun[1];Chen, Guorong[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：115

起止页码：155

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20134817033839);WOS:【SCI-EXPANDED(收录号:WOS:000331424300021)】；

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).

语种：英文

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

摘要：Reduced graphene oxide (RGO) on nickel hydroxide (Ni(OH)(2)) film. was synthesized via a green and facile hydrothermal approach. In this process, graphene oxide (GO) was reduced by nickel foam (NF) while the nickel metal was oxidized to Ni(OH)(2) film simultaneously, which resulted in RGO on Ni(OH)(2) structure. The RGO/Ni(OH)(2) composite film was characterized using by X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and field-emission scanning electron microscope (FESEM). The electrochemical performances of the supercapacitor with the as-synthesized RGO/Ni(OH)(2) composite films as electrodes were evaluated using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), electrochemical impedance spectrometry (EIS) in 1 M KOH aqueous solution. Results indicated that the RGO/Ni(OH)(2)/NF composite electrodes exhibited superior capacitive performance with high capability (2500 mF cm(-2) at a current density of 5 mA cm(-2), or 1667 F g(-1) at 3.3 A g(-1)), compared with pure Ni(OH)(2)/NF (450 mF cm(-2) at 5 mA cm(-2), 409 F g(-1) at 3.3 A g(-1)) prepared under the identical conditions. Our study highlights the importance of anchoring RGO films on Ni(OH)(2) surface for maximizing the optimized utilization of electrochemically active Ni(OH)(2) and graphene for energy storage application in supercapacitors. (C) 2013 Elsevier Ltd. All rights reserved.