Abstract
Free-standing polyaniline@MnO2@porous carbon nanofiber (PANI@MnO2@PCNF) supercapacitor electrodes were fabricated through the electrodeposition of MnO2 nanoparticles onto electrospun PCNFs and subsequent chemical polymerization of aniline on the MnO2@PCNF composite. The introduced PANI@MnO2@PCNF electrodes combined the high pseudo capacitance of both MnO2 nanoparticles and conducting PANI polymer with the good cycling stability of PCNFs, and hence they exhibited high capacitance retention (91%) after 1000 cycles with high capacitance of 289 F/g. In order to further improve the performance, asymmetric cell configuration was employed by using PANI@MnO2@PCNF and PCNF electrodes. Electrochemical test results showed that asymmetric cell configuration led to improved energy density (119 Wh/kg) as well as power density (322 W/kg). It is, therefore, demonstrated that binder-free PANI@MnO2@PCNF composites are promising electrode candidate for high-performance supercapacitor applications.
Original language | English |
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Article number | 113995 |
Journal | Journal of Electroanalytical Chemistry |
Volume | 861 |
DOIs | |
Publication status | Published - 15 Mar 2020 |
Bibliographical note
Publisher Copyright:© 2020
Funding
This research was supported by Research Fund of the Istanbul Technical University . Project Number: MGA2017-40754 .
Funders | Funder number |
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Istanbul Teknik Üniversitesi | MGA2017-40754 |
Keywords
- MnO nanoparticles
- Polyaniline
- Porous carbon nanofiber
- Supercapacitor