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- Title
N-Doped Porous Carbon-Nanofiber-Supported Fe 3 C/Fe 2 O 3 Nanoparticles as Anode for High-Performance Supercapacitors.
- Authors
Li, Li; Xie, Fengting; Wu, Heyu; Zhu, Yuanyuan; Zhang, Pinghua; Li, Yanjiang; Li, Hengzheng; Zhao, Litao; Zhu, Guang
- Abstract
Exploring anode materials with an excellent electrochemical performance is of great significance for supercapacitor applications. In this work, a N-doped-carbon-nanofiber (NCNF)-supported Fe3C/Fe2O3 nanoparticle (NCFCO) composite was synthesized via the facile carbonizing and subsequent annealing of electrospinning nanofibers containing an Fe source. In the hybrid structure, the porous carbon nanofibers used as a substrate could provide fast electron and ion transport for the Faradic reactions of Fe3C/Fe2O3 during charge–discharge cycling. The as-obtained NCFCO yields a high specific capacitance of 590.1 F g−1 at 2 A g−1, superior to that of NCNF-supported Fe3C nanoparticles (NCFC, 261.7 F g−1), and NCNFs/Fe2O3 (NCFO, 398.3 F g−1). The asymmetric supercapacitor, which was assembled using the NCFCO anode and activated carbon cathode, delivered a large energy density of 14.2 Wh kg−1 at 800 W kg−1. Additionally, it demonstrated an impressive capacitance retention of 96.7%, even after 10,000 cycles. The superior electrochemical performance can be ascribed to the synergistic contributions of NCNF and Fe3C/Fe2O3.
- Subjects
SUPERCAPACITOR electrodes; FERRIC oxide; SUPERCAPACITORS; DOPING agents (Chemistry); CARBON nanofibers; ANODES; NANOPARTICLES
- Publication
Molecules, 2023, Vol 28, Issue 15, p5751
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules28155751