期刊
CARBON
卷 160, 期 -, 页码 80-87出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2020.01.017
关键词
Coaxial electrospinning; Porous carbon nanofiber; Self-standing; Mechanical flexibility; Supercapacitors
资金
- National Natural Science Foundation of China [21704038, 51763018]
- NSFC-DFG Joint Research Project [51761135114]
- Natural Science Foundation of Jiangxi Province [20171ACB21009, 2018ACB21021, 20192BCB23001]
- National Postdoctoral Program for Innovative Talents [BX201700112]
- China Postdoctoral Science Foundation [2018M632599]
- Jiangxi Postdoctoral Science Foundation [13009394]
The preparation of electrode materials with superior electrochemical performance and excellent mechanical properties are essential for the fabrication of flexible supercapacitors. However, the compatibility of the porosity and flexibility for the electrode materials remains challenging. Herein, free-standing porous coaxial carbon nanofiber (PCCNF) membranes with large specific surface area (648 m(2) g(-1)) and suitable pore size distribution were fabricated by a facile coaxial electrospinning technique and template method. PCCNF possesses superb capacitance of 261 and 48 F g(-1) (1 A g(-1)) in three-electrode and two-electrode system, respectively, result in remarkable energy density (48.6 +/- 3 Wh kg(-1)) and power density (67.5 +/- 1 Wh kg(-1)). Moreover, supercapacitor devices based on PCCNF show superb flexibility as well as excellent electrochemical and mechanical stability. PCCNF-based high performance supercapacitors may be suitable for flexible electronic energy storage devices. (C) 2020 Elsevier Ltd. All rights reserved.
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