TY - JOUR AU - 이성철 DA - 2012/05 PY - 2012 UR - https://www.sciencedirect.com/science/article/pii/S0306261911005459?via%3Dihub UR - http://hdl.handle.net/20.500.11754/66965 AB - A two-dimensional, non-isothermal model of a proton exchange membrane fuel cell was implemented to elucidate heat balance through the membrane electrode assembly (MEA). To take local utilization of platinum catalyst into account, the model was presented by considering the formation of agglomerated catalyst structure in the electrodes. To estimate energy balance through the MEA, various modes of heat generation and depletion by reversible/irreversible heat release, ohmic heating and phase change of water were included in the present model. In addition, dual-pathway kinetics, that is a combination of Heyrovsky-Volmer and Tafel-Volmer kinetics, were employed to precisely describe the hydrogen oxidation reaction. The proposed model was validated with experimental cell polarization, resulting in excellent fit. The temperature distribution inside the MEA was analyzed by the model. Consequently, a thorough investigation was made of the relation between membrane thickness and the temperature distribution inside the MEA. PB - Elsevier Science B.V., Amsterdam. KW - PEMFC KW - Non-isothermal KW - Agglomerate KW - Nafion KW - CFD TI - Investigations of the temperature distribution in proton exchange membrane fuel cells IS - SI VL - 93 Special DO - 10.1016/j.apenergy.2011.08.035 T2 - APPLIED ENERGY ER -