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Korean Chemical Engineering Research,
Vol.42, No.2, 228-234, 2004
Vol.42, No.2, 228-234, 2004
전해중합법에 의한 폴리피롤 전극 제조 및 전기화학적 특성
Preparations and Electrochemical Characteristics of Polypyrrole Electrode by Electropolymeriztion
본 연구에서는 도펀트를 달리하여 정전류법으로 폴리피롤 막을 ITO 전극위에 제조하였다. 4단자법으로 전도도를 측정한 결과, BDS를 도핑물질로 하는 폴리피롤 필름의 전도도가 0.3 S/cm로 가장 우수하였다. BDS를 도펀트로 사용한 폴리피롤 제조 조건으로 BDS 농도, 전류 밀도, 전기량에 대한 영향을 고찰하였다. 또한 양이온 교환 특성을 향상시키기위해 BDS를 도펀트로 사용한 폴리피롤 위에 거대 음이온 PVS를 도펀트로 적층 중합한 복합체 필름을 제조하였으며, 양이온에 대한 교환특성이 향상되는 것을 확인할 수 있었다.
In the present study, the polypyrrole films were prepared by constant current method on indium tin oxide electrode with different doping materials. From the results of measurements by the four-point probe method, the maximum electrical conductivity of polypyrrole doped with 1,3-benzenedisulfonic acid (BDS) was 0.3 S/cm. In the case of BDS, the effects of polymerization variable were examined with respect to BDS concentration, current density, and electricity. In order to improve the cation exchange property, the layered polypyrrole composite films were fabricated by electrochemical oxidation of pyrrole in BDS solutions as dopant material followed by electropolymerization in polyvinylsulfonic acid (PVS) solutions. The resulting composite films showed higher redox behaviors for cation transfer than polypyrrole film doped with PVS.
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