Measurement and Analysis of Open Circuit Potential in PEFC

고분자 전해질 연료전지의 개방회로 전위차 측정 및 분석

  • 김홍건 (전주대학교 기계공학과) ;
  • 김유신 (전주대학교 대학원 기계공학과) ;
  • 김홍열 (전주대학교 공학기술종합연구소)
  • Published : 2004.10.01

Abstract

The discrepancies between theoretical values and measured data of PEFC(Proton Exchange Fuel Cell) is carried out for the machine tool power generation. Rudimental approach of theoretical fuel cell open circuit potential using Gibbs free energy is employed for the examination of PEFC module. The stack temperature, stack voltage and stack current are measured during the operation of PEFC module. It is found that stack voltage and current values show the pronounced discrepancy with the results calculated by Gibbs free energy approach. It is analysed that the discrepancy is due to activation polarization, concentration overvoltage and ohmic overvoltage.

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