J0802-1-4 流入ガス条件とセパレーターのガス流路形状が固体高分子形燃料電池単セル内物質・温度分布に及ぼす影響の理論的検討([J0802-1]PEFC)

概要

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The aim of this study is pointing out the dominant factors of transfer phenomena and the main reason for distribution about heat and mass in single cell of Polymer Electrolyte Fuel Cell. The 2D model was simulated by CFD to evaluate the influence of inflow gas condition and gas channel structure of separator on mass and temperature distribution in single cell. As a result, when gas channel pitch sets longer, O_2 diffusion obstruction was occurred due to the stay of generated H_2O in GDL under the rib of separator at cathode side. The mole concentration distribution of H_2O on interface between PEM and catalyst layer at cathode side was almost same regardless of temperature of inflow gas. Moreover, the maximum average mole concentration of H_2O was obtained at 70℃ because of the highest electron conductivity of PEM.
一般社団法人日本機械学会の論文
2010-09-04