Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Electrochemical Characteristics of Polyoxometalate/Polypyrrole/Carbon Cloth Electrode Synthesized by Electrochemical Deposition Method

전기화학 증착법에 의해 합성된 폴리옥소메탈레이트/폴리피롤/탄소천 전극의 전기화학적 특성

  • Yoon, Jo Hee (Department of Chemical Engineering, Kangwon National University) ;
  • Choi, Bong Gill (Department of Chemical Engineering, Kangwon National University)
  • 윤조희 (강원대학교 화학공학과) ;
  • 최봉길 (강원대학교 화학공학과)
  • Received : 2016.06.30
  • Accepted : 2016.07.11
  • Published : 2016.08.10
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Abstract

In this report, polyoxometalte (POM)-doped polypyrrole (Ppy) was deposited on surface of three-dimensional carbon cloth (CC) using an electrodeposition method and its pseudocapacitive behavior was investigated using cyclic voltammetry and galvanostatic charge-discharge. The POM-Ppy coating was thin and conformal which can be controlled by electrodeposition time. As-prepared POM-Ppy/CC was characterized using scanning electron microscope and energy-dispersive X-ray spectroscopy. The unique 3D nanocomposite structure of POM-Ppy/CC was capable of delivering excellent charge storage performances: a high areal capacitance ($561mF/cm^2$), a high rate capability (85%), and a good cycling performance (97% retention).

본 연구에서는 폴리옥소메탈레이트(polyoxometalate, POM)가 도핑된 폴리피롤(polypyrrole, Ppy)을 3차원 구조의 탄소천(carbon cloth, CC) 표면 위에 전기화학적 증착법을 이용하여 합성하고 이의 의사커패시터 특성을 순환전압전류법과 정전류 충전-방전법을 사용하여 분석하였다. POM-Ppy의 코팅은 전기화학적 증착 시간에 따라서 얇은 conformal형태의 코팅으로 조절되었다. 제조된 POM-Ppy/CC의 재료 특성은 전자주사현미경과 X-선 분광분석을 사용하여 분석하였다. POM-Ppy/CC의 3차원 나노복합체 구조는 높은 비정전용량($561mF/cm^2$), 고속 충방전(85% 용량 유지율) 및 장수명 특성(97% 용량 유지율)을 나타내었다.

Keywords

References

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