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

• 来源期刊: 科学通报(英文版)
• 学科: 工学
• 年，卷（期）: 2012,（23）
• 页码范围: 3045-3050
• 页数: 6页
• 分类号: TB383.2
• 语种: 中文

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.