A Study on the Electrochemical Behavior of Carbon Material with Compact Surface Using Impedance Spectroscopy

조밀한 표면조직을 갖는 탄소재료의 Impedance Spectroscopy를 통한 전기화학적 거동의 해석

  • Oh, Han Jun (Department of Material Science, Hanseo University) ;
  • Lee, Jong Ho (Department of Chemistry, Hanseo University) ;
  • Lee, Young Hoon (Department of Chemistry, Hanseo University) ;
  • Ko, Young Shin (Department of Science Education, Seoul National University of Education)
  • Published : 19960500

Abstract

The electrochemical behavior of glassy carbon and PVDF synthesis graphite materials with compact surface have been characterized by impedance spectroscopy. The Faraday-impedance both carbon materials were depended highly on polarization and the difference of electrochemical behavior accord to structure of surface between glassy carbon and synthesis graphite was represented, in these evaluated equivalent circuits, PVDF synthesis graphite was indicated with form that is added resistance and capacitance by the hydrophobic binder to glassy carbon equivalent circuit.

Impedance Spectroscopy를 통하여 조밀한 표면조직을 갖는 glassy carbon과 PVDF 합성흑연의 표면에 대한 전기화학적 거동을 조사하였다. 이들 두 탄소재료는 모두 전압에 대한 높은 Faraday-임피던스의존성이 나타났으며, 이를 평가하기 위한 등가회로는 PVDF 흑연의 경우 lassy carbon의 등가회로에 소수성 결합제에 의한 저항과 축전용량이 추가된 형태로 나타났다. 또한 디들 재료는 표면의 차이로 인한 전기화학적 거동의 차이도 나타났다.

Keywords

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