期刊
JOURNAL OF ENERGY CHEMISTRY
卷 25, 期 4, 页码 587-593出版社
ELSEVIER
DOI: 10.1016/j.jechem.2016.03.017
关键词
Supercapacitor; Electrospinning; Nanofiber; Phase separation
资金
- National Natural Science Foundation of China [51203071, 51363014, 51362018]
- China Postdoctoral Science Foundation [2014M552509]
- Opening Project of State Key Laboratory of Polymer Materials Engineering (Sichuan University) [sklpme2014-4-25]
- Program for Hongliu Distinguished Young Scholars in Lanzhou University of Technology [J201402]
- University Scientific Research Project of Gansu Province [2014B-025]
Microporous carbon nanofibers (MCNFs) derived from polyacrylonitrile nanofibers were fabricated via electrospinning technology and phase separation in the presence of polyvinylpyrrolidone (PVP). PVP together with a mixed solvent of N, N-Dimethylformamide and dimethyl sulfoxide was used as pore forming agent. The influences of PVP content in casting solution on the structure and electrochemical performance of the MCNFs were also investigated. The highest capacitance of 200 F/g was obtained on a three-electrode system at a scan rate of 0.5 A/g. The good performance was owing to the high specific surface area and the large amount of micro-pores, which enhanced the absorption and the transportation efficiency of electrolyte ion during charge/discharge process. This research indicated that the combination of electrospinning and phase separation technology could be used to fabricate microporous carbon nanofibers as electrode materials for supercapacitors with high specific surface area and outstanding electrochemical performance. (C) 2016 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
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