Evaluation of gas diffusion performance in wet GDL with 3D pore network model

G. Inoue, Y. Matsukuma, M. Minemoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

24 Citations (Scopus)

Abstract

It is important to investigate the two-phase condition in PEFC gas diffusion layer (GDL). In this study, the simulated GDL structures, such as carbon paper and carbon cloth, were developed by numerical analysis including the random orientation of carbon fibers and binders. And detailed structural estimation was carried out. Pore size distribution, electrical resistivity and tortuosity were calculated, and these values almost agreed with actual measurement values. Furthermore, in order to calculated two-phase condition in GDL, 3D pore network model based on an actual heterogeneous structure was developed by improving our past networking method. And the accumulating liquid water condition and the O2 gas diffusion performance of each GDL structure were compared on the water permeable condition. As the results, the relative diffusion coefficient models between wet and dry condition of each GDL were obtained by these calculations.

Original languageEnglish
Title of host publicationECS Transactions -Proton Exchange Membrane Fuel Cells 9
Pages1519-1527
Number of pages9
Edition1 PART 2
DOIs
Publication statusPublished - Dec 1 2009
Event9th Proton Exchange Membrane Fuel Cell Symposium (PEMFC 9) - 216th Meeting of the Electrochemical Society - Vienna, Austria
Duration: Oct 4 2009Oct 9 2009

Publication series

NameECS Transactions
Number1 PART 2
Volume25
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other9th Proton Exchange Membrane Fuel Cell Symposium (PEMFC 9) - 216th Meeting of the Electrochemical Society
CountryAustria
CityVienna
Period10/4/0910/9/09

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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