Characteristics of oxygen diffusivity and water distribution by X-ray radiography in microporous media in alternate porous layers of different wettability for moisture control in gas diffusion layer of PEFC
作者： Yoshio Utaka , Ikunori Hirose , Yutaka Tasaki
DOI: 10.1016/J.IJHYDENE.2011.04.152
关键词:
摘要: The mass transfer characteristics of the gas diffusion layer (GDL) are closely related to performance polymer electrolyte fuel cells. This study investigates configuration a new GDL in which two porous media with different wettabilities alternately arranged (hybrid GDL). oxygen diffusivity respect water content (saturation) were measured using an experimental system that employs galvanic sensor as absorber. Furthermore, X-ray radiography was used observe internal distribution microporous for elucidate enhancement mechanisms media. It possible distinguish between voids and by computer tomography. In addition, distributions visualized high hybrid structure clarified.
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