期刊
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
卷 34, 期 12, 页码 2342-2349出版社
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2018.06.013
关键词
Electrochemical capacitor; Solvothermal method; Nanostructures; Composites
资金
- General Project of Anhui Provincial Education Department [TSKJ20161313]
- Key Project of Anhui Provincial Education Department [KJ2018A0104]
- AHPU [2015YQQ007]
CuS nanoplatelets arrays grown on graphene nanosheets are successfully synthesized via a facile low-temperature solvothermal reaction with graphene oxide (GO), CH3CSNH2 and Cu(CH3COO)(2)center dot 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. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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