Mesoscopic modeling of liquid water transport in polymer electrolyte fuel cells

P. P. Mukherjee, C. Y. Wang

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

Abstract

A key performance limitation in polymer electrolyte fuel cells (PEFC), manifested in terms of mass transport loss, originates from liquid water transport and resulting flooding phenomena in the constituent components. Liquid water leads to the coverage of the electrochemically active sites in the catalyst layer (CL) rendering reduced catalytic activity and blockage of the available pore space in the porous CL and fibrous gas diffusion layer (GDL) resulting in hindered oxygen transport to the active reaction sites. The cathode CL and the GDL therefore play a major role in the mass transport loss and hence in the water management of a PEFC In this article, we present the development of a mesoscopic modeling formalism coupled with realistic microstructural delineation to study the profound influence of the pore structure and surface wettability on liquid water transport and interfacial dynamics in the PEFC catalyst layer and gas diffusion layer.

Original languageEnglish (US)
Title of host publicationECS Transactions - Proton Exchange Membrane Fuel Cells 8
Pages2125-2132
Number of pages8
Edition2 PART 2
DOIs
StatePublished - 2008
EventProton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting - Honolulu, HI, United States
Duration: Oct 12 2008Oct 17 2008

Publication series

NameECS Transactions
Number2 PART 2
Volume16
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherProton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting
CountryUnited States
CityHonolulu, HI
Period10/12/0810/17/08

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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