Electrospinning Preparation of Fe3O4/Porous Carbon Nanofibres for use as Supercapacitor Electrode Materials-易丝帮

Electrospinning Preparation of Fe3O4/Porous Carbon Nanofibres for use as Supercapacitor Electrode Materials

2020/9/27 13:08:06 Jiang, X. Shi, G. F. Wang, G. Y. Mishra, P. Wang, Z. Zhang, Q. Zhang, H. Q. Niu, X. L.

A Fe3O4/porous carbon nanofibre (Fe3O4/CNF) was prepared by carbonization of electrospun polyacrylonitrile (PAN)/polymethylmethacrylate (PMMA) composite nanofibres and used as electrode materials for supercapacitors. The introduction of PMMA as a pore- forming agent in PAN results in an optimum pore distribution and a more suitable specific surface area for Fe3O4/CNF; the improved pores and surface area contribute to the diffusion of the electrolyte from the surface to the inside of the electrode material. Electrochemical measurements of the Fe3O4/CNF in three- and two- electrode systems reveal a maximum specific capacitance of 540 F g(-1 )in the three-electrode system and a capacitance retention of 76.3 % after 5000 continuous cycles in the two-electrode system. Due to the synergistic effect of redox pseudocapacitance behaviour and bilayer capacitance, the excellent electrochemical performance of the Fe3O4/CNF electrode highlights the importance of adding PMMA into composite materials.

Journal: International Journal Of Electrochemical Science
Volume: 15
Issue:
Pages: 4602-4618
ISSN: 1452-3981
DOI:
Year: 2020
Number: 4
Type: Journal Article

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