Mass Transfer in Microporous Layers for Polymer Electrolyte Fuel Cells Analyzed with Pore Network Modeling

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

The application of a microporous layer (MPL) to the catalyst layer (CL) side of the gas diffusion layer substrate of a polymer electrolyte fuel cell (PEFC, PEMFC) is effective to mitigate liquid water accumulation at the CL that inhibits oxygen transport to the cathode CL (Flooding). To elucidate the effects of two-phase flow on the oxygen transport in an MPL for its optimized designs, we have modeled three-dimensional porous structures of in-house hydrophobic MPLs with pore network models (PNMs) for convective air permeation and oxygen diffusion with liquid water saturation. Pore diameter distributions derived by a focused ion beam scanning electron microscope (FIB-SEM) are used to construct the PNMs. Oxygen diffusion measurements by using gas chromatography with changing wetting liquid saturation, as well as air permeation measurements, validate the PNMs.

本文言語英語
ホスト出版物のタイトル240th ECS Meeting - Polymer Electrolyte Fuel Cells and Electrolyzers 21 (PEFC and E 21)
出版社IOP Publishing Ltd.
ページ129-135
ページ数7
8
ISBN(電子版)9781607685395
DOI
出版ステータス出版済み - 2021
イベント240th ECS Meeting - Orlando, 米国
継続期間: 10 10 202110 14 2021

出版物シリーズ

名前ECS Transactions
番号8
104
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

会議

会議240th ECS Meeting
国/地域米国
CityOrlando
Period10/10/2110/14/21

All Science Journal Classification (ASJC) codes

  • 工学(全般)

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