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Electric Voltage and Current Characteristics of Fuel Cell for Machine Tool Power Supply  

Kim H. G. (전주대학교 기계공학과)
Kim Y. S. (전주대학교 대학원 기계공학과)
KIm H. Y. (전주대학교 공학기술 종합연구소)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.14, no.1, 2005 , pp. 1-7 More about this Journal
Abstract
PEMFC (Proton Exchange Membrane Fuel Cell) is considered as an attractive option to produce electric power in manyapplications. A fundamental step of theoretical fuel cell open circuit potential is examined and compared with the measured data from 1.2KW PEMFC module. The hydrogen pressure and stack temperature are also measured during the operation of PEMFC module. It is found that the stack voltage and current data agree in general with the results calculated by chemical potential approach though they still have a discrepancy. It is analysed that the discrepancy is due to activation polarization, concentration overvoltage and ohmic overvoltage.
Keywords
PEMFC; Open circuit potential; Stack voltage; Stack current; Polarization;
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