固体高分子形燃料電池用ガス拡散層の液水制御 : ぬれ性の異なる多孔体の交互配置を利用する新構造拡散層(熱工学,内燃機関,動力など)

抄録

The mass transfer characteristics of gas diffusion layer (GDL) are closely related to cell performance in PEFC. In this study, the configuration of new type GDL, in which two kinds of porous media having different wettability are arranged alternately (Hybrid type GDL), was proposed. The characteristics of oxygen diffusivity with respect to its water content (saturation) were measured by using an experimental apparatus consists of Galvanic battery type oxygen sensor as an oxygen absorber. Experimental results show that the Hybrid stucture has great advantages compared to conventional GDL with single porous material.