文献类型：期刊文献

英文题名：Direct synthesis of RGO/Cu2O composite films on Cu foil for supercapacitors

作者：Dong, Xiangmao[1];Wang, Kun[1];Zhao, Chongjun[1,2];Qian, Xiuzhen[1];Chen, Shi[3];Li, Zhen[2];Liu, Huakun[2];Dou, Shixue[2]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Sch Mat Sci & Engn, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2500, Australia;[3]Wuhan Univ Technol, Sch Informat Engn, Wuhan 430070, Peoples R China

年份：2014

卷号：586

起止页码：745

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20134817022314);WOS:【SCI-EXPANDED(收录号:WOS:000329856800120)】；

基金：Financial support was provided by the National Natural Science Foundation of China (No. 20504026), the Shanghai Natural Science Foundation (No. 13ZR1411900), the Shanghai Leading Academic Discipline Project (B502), and the Shanghai Key Laboratory Project (08DZ2230500). Z. Li acknowledges support from the Australian Research Council through Discovery Projects DP130102699 and DP130102274.

语种：英文

外文关键词：RGO/Cu2O/Cu composites; Thin films; Hydrothermal synthesis; Supercapacitors

摘要：Reduced graphene oxide/cuprous oxide (RGO/Cu2O) composite films were directly synthesized on the surface of copper foil substrates through a straight redox reaction between GO and Cu foil via a hydrothermal approach. Characterization of the resultant composites with X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and field emission scanning electron microscope (FESEM) confirms the formation of Cu2O and reduction of GO, in which Cu2O nanoparticles were well covered by RGO. The resultant composites (referred to as RGO/Cu2O/Cu) were directly used as electrodes for supercapacitors, and their electrochemical performance was assessed by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectrometry (EIS) in 1 M KOH aqueous solution. A specific capacitance of 98.5 F g(-1) at 1 A g(-1) was obtained, which is much higher than that of pure Cu2O prepared under the same conditions, due to the presence of RGO. (C) 2013 Elsevier B.V. All rights reserved.