Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Electrochemical Properties of Polyaniline with Carbon Nanotube and RuO2 as Supercapacitor Electrodes

탄소나노섬유 및 RuO2가 폴리아닐린의 초고용량 캐폐시턴스 특성에 미치는 효과

  • Yoon, Yu Il (Division of Applied Chemistry and Biotechnology, Hanbat National University) ;
  • Ko, Jang Myoun (Division of Applied Chemistry and Biotechnology, Hanbat National University)
  • 윤여일 (한밭대학교 응용화학생명공학부) ;
  • 고장면 (한밭대학교 응용화학생명공학부)
  • Received : 2008.02.26
  • Accepted : 2008.04.13
  • Published : 2008.10.31
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Abstract

Prepared are three types of composite supercapacitor electrode, such as electroactive polyaniline(PAN), PAN/multi-walled carbon nanotube(CNT), and $CNT/PAN/RuO_2$. Cyclic voltammetry was performed to investigate the supercapacitive properties of these electrodes in an electrolyte solution of 1.0M $H_2SO_4$. The $CNT/PAN/RuO_2$ electrode showed the highest specific capacitance at all scan rates(e.g., 441 and $392F\;g^{-1}$ at 100 and $1,000mV\;s^{-1}$, respectively). In cycle performance, however, the PAN/CNT electrode demonstrated the best capacitance retention (66%) at $10^4th$ cycle.

Polyaniline(PAN), multi-walled carbon nanotube(CNT)/PAN, $CNT/PAN/RuO_2$로 구성된 초고용량캐폐시터 전극을 제조하여 cyclic voltammetry(CV)를 이용하여 1 M $H_2SO_4$ 수용액에서 캐패시턴스 특성을 조사하였다. PAN, CNT/PAN 그리고 $CNT/PAN/RuO_2$ 복합전극은 높은 주사속도인 1,000 mV/s에서 199, 304, 392 F/g의 비용량을 각각 나타내었다. 수명시험 결과, $CNT/PAN/RuO_2$, CNT/PAN, PAN 전극은 10,000 번의 싸이클에서 각각 61, 66 그리고 51%의 초기용량을 유지하였다. PAN 전극은 CNT와 복합화하여 축전용량 및 수명특성을 향상시킬 수 있으며, $RuO_2$ 도입은 축전용량 향상에는 기여하나 수명 증가 효과는 미미하였다.

Keywords

References

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