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Prediction of Fuel Cell Performance and Water Content in the Membrane of a Proton Exchange Membrane Fuel Cell  

Yang, Jang-Sik (RIMT, Pusan National University)
Choi, Gyung-Min (School of Mechanical Engineering, and RIMT, Pusan National University)
Kim, Duck-Jool (School of Mechanical Engineering, and RIMT, Pusan National University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.14, no.6, 2006 , pp. 151-159 More about this Journal
Abstract
A one-dimensional numerical analysis is carried out to investigate the effects of inlet gas humidities, inlet gas pressures, and thicknesses of membrane on the performance of a proton exchange membrane fuel cell. It is found that the relative humidity of inlet gases at anode and cathode sides has a significant effect on the fuel cell performance. Especially, the desirable fuel cell performance occurs at low relative humidity of the cathode side and at high humidity of the anode side. In addition, an increase in the pressure ranging from 1 atm to 4 atm at the cathode side results in a significant improvement in the fuel cell performance due to the convection effect by a pressure gradient toward the anode side, and with decreasing the thickness of membrane, the fuel cell performance is enhanced reasonably.
Keywords
Proton exchange membrane fuel cell; Electro-osmotic drag; Back diffusion; Pressure gradient;
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