CuS nanoplatelets arrays grown on graphene nanosheets as advanced electrode materials for supercapacitor applications
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2018年第12期
论文作者：Xianfu Li Kaixuan Zhou Jianyu Zhou Jianfeng Shen Mingxin Ye
文章页码：2342 - 2349
摘 要：CuS nanoplatelets arrays grown on graphene nanosheets are successfully synthesized via a facile lowtemperature solvothermal reaction with graphene oxide（GO）, CH3 CSNH2 and Cu（CH3 COO）2·H2O as the reactants. CH3CSNH2 plays an important role in being the reducing agent for GO and the sulfur source of CuS. Supercapacitive performance of the graphene/CuS nanocomposite as active electrode materials has been evaluated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy measurements. The results indicate that graphene/CuS electrode delivers a high capacitance of 497.8 F g-1 at a current density of 0.2 A g-1, which outperforms bare CuS electrode. This excellent performance is ascribed to the short diffusion path and large surface area of the unique hierarchical nanostructure with nanoflakes building blocks for bulk accessibility of faradaic reaction.
Xianfu Li1,2，Kaixuan Zhou1，Jianyu Zhou1，Jianfeng Shen2，Mingxin Ye2
1. School of Biological and Chemical Engineering,Anhui Polytechnic University2. Institute of Special Materials and Technology,Fudan University
摘 要：CuS nanoplatelets arrays grown on graphene nanosheets are successfully synthesized via a facile lowtemperature solvothermal reaction with graphene oxide（GO）, CH3 CSNH2 and Cu（CH3 COO）2·H2O as the reactants. CH3CSNH2 plays an important role in being the reducing agent for GO and the sulfur source of CuS. Supercapacitive performance of the graphene/CuS nanocomposite as active electrode materials has been evaluated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy measurements. The results indicate that graphene/CuS electrode delivers a high capacitance of 497.8 F g-1 at a current density of 0.2 A g-1, which outperforms bare CuS electrode. This excellent performance is ascribed to the short diffusion path and large surface area of the unique hierarchical nanostructure with nanoflakes building blocks for bulk accessibility of faradaic reaction.
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