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Porous Graphitic Carbon Fibers for Fast‐Charging Supercapacitor Applications
Author(s) -
Pang Xin,
Zhou Tong,
Jiang Qinting,
Kumar Parveen,
Geng Shitao,
Jia Minyu,
Zhou Jin,
Liu Bo,
Qin Hua
Publication year - 2020
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.202000050
Subject(s) - supercapacitor , materials science , polyacrylonitrile , carbonization , electrolyte , carbon fibers , specific surface area , chemical engineering , porosity , electrochemistry , amorphous carbon , nanotechnology , electrode , amorphous solid , catalysis , composite material , polymer , scanning electron microscope , chemistry , organic chemistry , composite number , engineering
Large accessible surface area, facile pore engineering, and high electrical conductivity are highly desirable properties of efficient electrode materials. Herein, porous carbon fibers with a graphitic carbon skeleton and amorphous carbon body are successfully synthesized from directly carbonized polyacrylonitrile (PAN)/FeCl 3 electrospun fibers via in situ catalytic graphitization and subsequent chemical activation. Due to the graphitic carbon skeleton, which facilitates fast electron transfer, and porous carbon body, which gives a large specific surface area for charge accumulation and fast ion diffusion, optimal porous graphitic carbon fibers are developed that exhibit a fast‐charging electrochemical performance with a capacitance of 165 F g −1 at high current densities of 300 A g −1 in an alkaline electrolyte. These findings can prove to be beneficial for realizing a supercapacitor with rapid charging and discharging ability at high current densities.