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The effect of PEMFC stack performance at air supply condition  

Park, Chang-Kwon (Dept. of Mechanical Engineering, Chonnam National University)
Oh, Byeong-Soo (Dept. of Mechanical Engineering, Chonnam National University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.19, no.3, 2008 , pp. 232-238 More about this Journal
Abstract
Research has been proceeded on fuel cell which is fueled by hydrogen. Polymer electrolyte membrane fuel cell (PEMFC) is promising power source due to high power density, simple construction and operation at low temperature. But it has problems such as high cost, temperature dependent performance. These problems could be solved by experiment which is useful for analysis and optimization of fuel cell performance and heat management. In this paper, when hydrogen flows constantly at the stoichiometry of ${\xi}=1.6$, the performance of the fuel cell stack was increased and the voltage difference between each cells was decreased according to the increase of air stoichiometry by 2.0, 2.5, 3.0. Therefore, the control of air flow rate in the same gas channel is important to get higher performance. Purpose of this research is to expect operation temperature, flow rate, performance and mass transportation through experiment and to help actual manufacture of PEM fuel cell stack.
Keywords
stoichiometry; PEMFC; performance; optimization;
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