화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.27, No.11, 617-623, November, 2017
DOI10.3740/MRSK.2017.27.11.617  Export Citation
전기 이중층 커패시터용 메조 다공성 탄소 나노섬유의 제조
Fabrication of Mesoporous Carbon Nanofibers for Electrical Double-Layer Capacitors
이도영1, 안건형2, 안효진1, 2, †
  • 1서울과학기술대학교 신소재공학과
  • 2서울과학기술대학교 의공학-바이오소재 융합 협동과정 신소재공학프로그램
Do-Young Lee1, Geon-Hyoung An2, and Hyo-Jin Ahn1, 3, †
  • 1Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
  • 2Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineeringand Biomaterials, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
  • 3Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
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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 667 m2 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 87 F g-1 at a current density of 0.1 A g-1, high-rate performance (72 F g-1 at a current density of 20.0 A g-1), and good cycling stability (92 F 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.
Keywords:electrical double layer capacitors;electrode;mesoporous structure;carbon nanofiber
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