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N-Doped Porous Carbon-Nanofiber-Supported Fe 3 C/Fe 2 O 3 Nanoparticles as Anode for High-Performance Supercapacitors.
- Source :
- Molecules; Aug2023, Vol. 28 Issue 15, p5751, 14p
- Publication Year :
- 2023
-
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 Fe<subscript>3</subscript>C/Fe<subscript>2</subscript>O<subscript>3</subscript> 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 Fe<subscript>3</subscript>C/Fe<subscript>2</subscript>O<subscript>3</subscript> during charge–discharge cycling. The as-obtained NCFCO yields a high specific capacitance of 590.1 F g<superscript>−1</superscript> at 2 A g<superscript>−1</superscript>, superior to that of NCNF-supported Fe<subscript>3</subscript>C nanoparticles (NCFC, 261.7 F g<superscript>−1</superscript>), and NCNFs/Fe<subscript>2</subscript>O<subscript>3</subscript> (NCFO, 398.3 F g<superscript>−1</superscript>). The asymmetric supercapacitor, which was assembled using the NCFCO anode and activated carbon cathode, delivered a large energy density of 14.2 Wh kg<superscript>−1</superscript> at 800 W kg<superscript>−1</superscript>. 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 Fe<subscript>3</subscript>C/Fe<subscript>2</subscript>O<subscript>3</subscript>. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14203049
- Volume :
- 28
- Issue :
- 15
- Database :
- Complementary Index
- Journal :
- Molecules
- Publication Type :
- Academic Journal
- Accession number :
- 169908823
- Full Text :
- https://doi.org/10.3390/molecules28155751