한국재료학회지 (Korean Journal of Materials Research)

  • 제27권11호
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  • Pages.617-623
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  • 2017
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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전기 이중층 커패시터용 메조 다공성 탄소 나노섬유의 제조

Fabrication of Mesoporous Carbon Nanofibers for Electrical Double-Layer Capacitors

  • 이도영 (서울과학기술대학교 신소재공학과) ;
  • 안건형 (서울과학기술대학교 의공학-바이오소재 융합 협동과정 신소재공학프로그램) ;
  • 안효진 (서울과학기술대학교 신소재공학과)
  • Lee, Do-Young (Department of Materials Science and Engineering, Seoul National University of Science and Technology) ;
  • An, Geon-Hyoung (Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology) ;
  • Ahn, Hyo-Jin (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
  • 투고 : 2017.09.20
  • 심사 : 2017.10.19
  • 발행 : 2017.11.27
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초록

Mesoporous carbon nanofibers as electrode material for electrical double-layer capacitors(EDLCs) are fabricated using the electrospinning method and carbonization. Their morphologies, structures, chemical bonding states, porous structure, and electrochemical performance are investigated. The optimized mesoporous carbon nanofiber has a high sepecific surface area of $667m^2\;g^{-1}$, high average pore size of 6.3 nm, and high mesopore volume fraction of 80 %, as well as a unifom network structure consiting of a 1-D nanofiber stucture. The optimized mesoporous carbon nanofiber shows outstanding electrochemical performance with high specific capacitance of $87F\;g^{-1}$ at a current density of $0.1A\;g^{-1}$, high-rate performance ($72F\;g^{-1}$ at a current density of $20.0A\;g^{-1}$), and good cycling stability ($92F\;g^{-1}$ after 100 cycles). The improvement of the electrochemical performance via the combined effects of high specific surface area are due to the high mesopore volume fraction of the carbon nanofibers.

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