Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The Effect of CNT Electrode on the Charging and Discharging Characteristics of Supercapacitor

CNT를 이용한 Supercapacitor의 충.방전 특성

  • Hur, Geun (Department of Materials Science and Engineering, Hanyang University) ;
  • Myoung, Seong-Jae (Advanced Materials and Components lab, Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Yong-Hyun (Department of Materials Science and Engineering, Hanyang University) ;
  • Chun, Myoung-Pyo (Advanced Materials and Components lab, Korea Institute of Ceramic Engineering and Technology) ;
  • Cho, Jeong-Ho (Advanced Materials and Components lab, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Byung-Ik (Advanced Materials and Components lab, Korea Institute of Ceramic Engineering and Technology) ;
  • Shim, Kwang-Bo (Department of Materials Science and Engineering, Hanyang University)
  • 허근 (한양대학교 신소재공학부) ;
  • 명성재 (요업기술원 첨단소재부품팀) ;
  • 이용현 (한양대학교 신소재공학부) ;
  • 전명표 (요업기술원 첨단소재부품팀) ;
  • 조정호 (요업기술원 첨단소재부품팀) ;
  • 김병익 (요업기술원 첨단소재부품팀) ;
  • 심광보 (한양대학교 신소재공학부)
  • Published : 2007.11.01
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Abstract

Two sorts of electrode composed of Sulpur/CNT/PVDF and Silver/CNT/PVDF were prepared by in situ chemical method and their electrochemical performance were evaluated by using cyclic voltammetry, impedance measurement and constant-current charge/discharge cycling technique. Also, composite electrodes were characterized by FE-SEM and BET. Raw materials such as CNT/Silver and CNT/Sulfur were mixed in ethanol, dried. These mixed materials were heated at 900 and $320^{\circ}C$ for 2hr, respectively in order to enhance contact among CNT electrodes. Electric double layer capacitor cells were fabricated using these mixed powder with polymer of PVDF. For the charging and discharging characteristics measured at scan rate of 1 mA/s, Supercapacitor of Sulphur-CNT-PVDF electrode showed a better performance than that of Ag-CNT-PVDF, which seems to be related with lower contact resistance of Sulphur-CNT-PVDF electrode.

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