Optimum Condition of Conducting Materials on Carbon-PTFE Electrode for Electric Double Layer Capacitor

EDLC용 Carbon-PTFE 전극에서의 도전재 조성 최적화

  • 이선영 (한국 전기 연구원 전지연구그룹) ;
  • 김익준 (한국 전기 연구원 전지연구그룹) ;
  • 문성인 (한국 전기 연구원 전지연구그)
  • Published : 2004.09.01


This work describes the effect of conducting materials on the electrochemical performances of electric double layer capacitor. Three kinds of Carbon black, such as Acethylene Black, Super P Black, Ketjen black supplied by Denki Kagaku Kogyo, MMM Carbon, Ketjen Black International Co. respectively, was added in carbon-Polytetrafluoroethylene (PTFE) electrode, which composition is activated carbon : carbon black : PTFE = 80 : 15 : 5 wt.%, and were compared with their electrochemical properties. The electrode with Ketjen Black has showed the lowest resistance than other carbon black, and also exhibited the better rate capability between 0.5 mA/cm$^2$ ∼ 100 mA/cm$^2$ current density in unit cell capacitor. On the other hand, as increasing the composition of Ketjen Black, the specific resistances of electrodes were decreased and Ketjen Black content higher than 15 wt% increased. The best rate capability was obtained at the electrode with 15 wt.% of Ketjen Black in unit cell capacitor. This behaviors would be correlated with the dense structure of electrode.


  1. Procedings of the 8th International Seminar on Double Layer Capacitors and Similar Energy Storage Devices C. J. Farahmandi;R. Spee
  2. Electrochim. Acta v.45 Polythiohene S, S dioxides; an investigation on electrochemical doping C. Arbizzani;M. Mastragostino;F. Soavi
  3. Proceedings of the 38th Power Sources Conference J. P. Ferraris;I. D. Brotherston;D. C. Loveday
  4. 한국전기전자재료학회 2002하계학술대회논문집 유기 전해액에서 루테늄산화물 전극의 전기화학적 특성 도칠훈;최상진;문성인
  5. J. of Power Sources v.74 Studies of activated carbons used in double-layer capacitors Deyang, Qu;Hang Shi
  6. J. of Power Sources v.80 Electrode composition for carbon power supercapacitors L. Bonnefoi;P. Simon;J. F. Fauvarque;C. Sarrazin;J. F. Sarrau;A. Dugast
  7. Proc. 7th International Seminar on Double Layer Capacitors and Similar Energy Storage Devices P. Konsweil;O. Scchmid;A. Loffier
  8. J. of Power Sources v.47 Limiting factors for carbon-based chemical double -layer capacitors M. F. Rose;C. Johnson;T. Owen;B. Stephen
  9. J. of Power Sources v.101 Studies and charaterisations of various activated carbons used for carbon/ carbon supercapacitors J. Gamby;P. L. Taberna;P. Simon;J. F. Fauvarque;M. Chesneau
  10. 한국전기전자재료학회 2002하계학술대회논문집 MnO₂입자크기에 따른 아연 공기 전지의 특성연구 김지훈;엄승욱;문성인;윤문수;김주용;육경창;박정후
  11. 전기전자재료학회논문지 v.17 전기이중층 커패시터의 특성에 미치는 혼성 도전재의 영향 김익준;이선영;도칠훈;문성인
  12. Electrochemical Acta v.45 Principles and applications of electrochemical capacitors R. Kotz;M. Carlen