Measurement of water transport rate across the gas diffusion layer in a PEM fuel cell, and the influence of PTFE content and micro-porous layer

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TypeArticle
Journal titleJournal of Power Sources
Volume188
Issue1
Pages122126; # of pages: 5
SubjectPEM fuel cell; Water transport; GDL; MPL; PTFE
AbstractWater management in a proton exchange membrane (PEM) fuel cell is one of the critical issues for improving fuel cell performance and durability, and water transport across the gas diffusion layer plays a key role in PEM fuel cell water management. In this work, we investigated the effects of polytetrafluoroethylene (PTFE) content and the application of a micro-porous layer (MPL) in the gas diffusion layer (GDL) on the water transport rate across the GDL. The results show that both PTFE and the MPL play a similar role of restraining water transport. The effects of different carbon loadings in the MPL on water transport were also investigated. The results demonstrate that the higher the carbon loading in the MPL, the more it reduces the water transport rate. Using the given cell hardware and components, the optimized operation conditions can be obtained based on a water balance analysis.
Publication date
AffiliationNational Research Council Canada; NRC Institute for Fuel Cell Innovation
Peer reviewedNo
NPARC number8900932
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Record identifier03e165bc-e5e6-454c-8a84-7b474d22645f
Record created2009-04-22
Record modified2016-05-09
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