Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Characterization of Electric Double-Layer Capacitors with Carbon Nanotubes Directly Synthesized on a Copper Plate as a Current Collector

구리 집전판에 직접 합성한 탄소나노튜브의 전기이중층 커패시터 특성

  • Jung, Dong-Won (School of Chemical Engineering & Bioengineering, University of Ulsan) ;
  • Lee, Chang-Soo (School of Materials Science and Engineering, University of Ulsan) ;
  • Park, Soon (School of Materials Science and Engineering, University of Ulsan) ;
  • Oh, Eun-Souk (School of Chemical Engineering & Bioengineering, University of Ulsan)
  • 정동원 (울산대학교 생명화학공학부) ;
  • 이창수 (울산대학교 첨단소재공학부) ;
  • 박순 (울산대학교 첨단소재공학부) ;
  • 오은석 (울산대학교 생명화학공학부)
  • Received : 2010.11.17
  • Published : 2011.05.25
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Abstract

Carbon nanotubes (CNTs) were directly synthesized on a copper (Cu) plate as a current collector by the catalytic thermal vapor deposition method for an electric double-layer capacitor (EDLC) electrode. The diameters of vertically aligned CNTs grown on the Cu plate were 20~30 nm. From cyclic voltammetry (CV) results, the CNTs/Cu electrode showed high specific capacitance with typical profiles of EDLCs. Rectangularshaped CV curves suggested that the CNTs/Cu electrode could be an excellent candidate for an EDLC electrode. The specific capacitances were in a range of 25~75 F/g with a scan rate of 10~100 mV/s and KOH electrolyte concentration 1~6 M, and were maintained up to 1000 charge/discharge cycles due to strong adhesion between the Cu substrate and the CNTs.

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