期刊
JOURNAL OF MATERIOMICS
卷 6, 期 3, 页码 523-531出版社
ELSEVIER
DOI: 10.1016/j.jmat.2020.03.008
关键词
Flexible film; Supercapacitor; Energy density; ORR; Strain sensor
资金
- China Postdoctoral Science Foundation [2019M653853XB]
- State Key Laboratory of Solidification Processing in NWPU [SKLSP201815]
- Opening Project of Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control [2019KF21]
- Natural science advance research foundation of Shaanxi University of Science and Technology [2018QNBJ-03]
- National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science Technology)
- High-level Foreign Experts Project [GDT20186100425]
- Biomass Chemistry and Materials Academician Workstation Project in SUST [134090002]
A flexible 3D N-doped reduced graphene oxide (N-RGO)/carbon nanotube (CNT)-MnO2 hybrid film was constructed with outstanding supercapacitor, excellent oxygen reduction reaction (ORR) and good sensing performances. The resultant hybrid film possessed large specific capacitances of 418 F g(-1) and 209 mF cm(-2) in aqueous and solid electrolytes, and outstanding capacitance retentions of 95% and 94% were obtained for both electrolytes after experiencing 5000 cycles. A simple supercapacitor based on the resultant flexible hybrid film was further fabricated with a much smaller time constant tau(0) (0.38 s) than that of typical activated-carbon supercapacitors, suggesting a quick response frequency. Moreover, the assembled supercapacitor device showed high energy densities of 45.72 and 92.13 Wh kg(-1) and simultaneously sustained large power densities of 12,526 and 15873 W kg(-1) under a scan rate of 50 mV s(-1) in aqueous and solid electrolytes, respectively. Furthermore, the resultant flexible film showed excellent performance in the ORR and can also be used to assemble a strain sensor with an excellent sensing performance for bending strain. (C) 2020 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.
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