Electrochemical reduction of graphene oxide films:Preparation,characterization and their electrochemical properties

查看全文 作　　者：ZHANG Xiong ZHANG DaCheng CHEN Yao SUN XianZhong MA [1]YanWei

机构地区：[1]Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China

出　　处：《Chinese Science Bulletin》索引2012年第57卷第23期,共6页

基　　金：supported by the Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX2-YW-W26);Beijing Municipal Science and Technology Commission(Z111100056011007);the National Natural Science Foundation of China(21001103and51025726) 摘　　要：Graphene oxide (GO) film was electrochemically reduced by a cyclic voltammetry technique in 6 mol L-1 KOH aqueous solution.Electrochemically reduced graphene oxide (ER-GO) film was characterized by X-ray diffraction,X-ray photoelectron spectroscopy,atomic force microscopy,and Raman spectroscopy.The oxygen content (with the O/C atomic ratio of 1.29%) was significantly decreased after electrochemical reduction.The ER-GO film exhibited a specific capacitance of 152 F g-1 at the current density of 5 A g-1 and a good rate capability.Furthermore,the ER-GO film showed an excellent cycling ability.The capacitance retention remained 99% after 3000 cycles at the current density of 10 A g-1. 关键词：graphene, ELECTROCHEMICAL reduction, ELECTROCHEMICAL DOUBLE-LAYER capacitor, ELECTRODE material

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Electrochemical reduction of graphene oxide films:Preparation,characterization and their electrochemical properties

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