文献类型：期刊文献

英文题名：Facile Synthesis of Cu2O/RGO/Ni(OH)2 Nanocomposite and its Double Synergistic Effect on Supercapacitor Performance

作者：Wang, Kun[1];Zhao, Chongjun[1];Min, Shudi[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：2015

卷号：165

起止页码：314

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20151200654821);WOS:【SCI-EXPANDED(收录号:WOS:000353499400041)】；

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 (No. B502), the Shanghai Key Laboratory Project (No. 08DZ2230500), and the EU FP7 Staff Exchange program (No. PIRSES-GA-2012-318990-ELEKTRONANOMAT).

语种：英文

外文关键词：Supercapacitor; Cu2O/RGO/Ni(OH)(2); Hydrothermal; Cycling stability; Double synergistic effect

摘要：A nanocomposite for supercapacitor electrode materials was designed and developed by integrating partially disabled Cu2O (low specific capacity, but high cycling ability) and Ni(OH)(2) (low cyclability and high specific capacity) in the presence of reduced graphene oxide (RGO) nanosheets. Nanocomposite of Cu2O/RGO/Ni(OH)(2) was directly grown on nickel foam (NF) through a facile one-pot hydrothermal process without any other reductant or oxidant, in which nickel foam acted as both a reductant of GO and Ni source, and a substrate for nanocomposite. The resultant Cu2O/RGO/Ni(OH)(2) nanocomposites were characterized by X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectrometer (XPS), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The electrochemical performance of the as-synthesized Cu2O/RGO/Ni(OH)(2)/NF electrodes were evaluated using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectrometry (EIS) in 6 mol L-1 KOH aqueous solution. This Cu2O/RGO/Ni(OH)(2) nanocomposite exhibits superior capacitive performance: high capability (3969.3 mF cm(-2) at 30 mA cm(-2), i.e., 923.1 F g(-1) at 7.0 A g(-1)), excellent cycling stability (92.4% retention even after 4,000 cycles, for RGO/Ni(OH)(2)/NF, 92.3% after 1,000 cycles), and good rate capacitance (50.3% capacity remaining at 200 mA cm(-2)). (C) 2015 Elsevier Ltd. All rights reserved.