期刊
ELECTROCHIMICA ACTA
卷 259, 期 -, 页码 1110-1119出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.12.079
关键词
Supercapacitor; Carbon nanofiber composites; Specific capacitance; Cycling stability
资金
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Ministry of Trade, Industry Energy (MOTIE) [20174010201160]
- National Research Foundation of Korea (NRF) - Ministry of Education, Republic of Korea [20090093816]
The carbon nanofiber-carbon nanotube (CNF-CNT) composites were fabricated by simple electrospinning and carbonization of polyacrylonitrile (PAN)-CNT solution prepared by first sonicating and stirring the CNT in N, N-dimethylformamide (DMF) as solvent. Aniline monomer was then coated on the composite materials via in situ chemical polymerization to form CNF-CNT-PANI composite. The as-prepared samples were then characterized. Importantly, the dispersed CNTs in the CNF-CNT composites were crucial for the CNF-CNTs acting as supports for the CNF-CNT-PANI composites to attain high electrochemical properties. The composite electrode material is found to be used as effective electrode material for supercapacitors with specific capacitance as high as 1119 F g(-1) at 1 A g(-1) compared to the bare CNF film with a specific capacitance of 278 F g(-1). The composite electrode displaced excellent cyclic stability with retention of 98% even after 2000 cycles at a current density of 10 A g(-1). (C) 2017 Elsevier Ltd. All rights reserved.
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