Abstract
Water management in the alkaline-exchange-membrane fuel cell (AEMFC) was investigated to gain insight into the coupling of electrochemical reaction kinetics and water transport. We developed a two-dimensional nonisothermal model that can predict the response of an AEMFC according to variations of operating parameters, such as the inlet relative humidity and temperature. The results demonstrated how the performance is enhanced with increasing anode and cathode humidification. Water management and ion-transport characteristics of an AEMFC assembly are discussed in detail. Our model can be used to examine and elucidate performance bottlenecks and enable strategies to overcome them, significantly increasing the possibility of AEMFC commercialization.
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