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The influence of the gas diffusion layer on water management in polymer electrolyte fuel cells
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.ORCID iD: 0000-0001-9203-9313
2007 (English)In: Fuel Cells, ISSN 1615-6846, E-ISSN 1615-6854, Vol. 7, no 4, 306-313 p.Article in journal (Refereed) Published
Abstract [en]

Performance losses due to flooding of gas diffusion layers (GDLs) and flow fields as well as membrane dehydration are two of the major problems in PEFC. In this investigation, the effect of GDL on the cell water management in PEFC is studied using segmented and single cell experiments. The behaviour of four different commercial GDLs was investigated at both high and low inlet humidity conditions by galvanostatic fuel cell experiments. The influence of varying reactant humidity and gas composition was studied. The results at high inlet humidity show that none of the studied GDLs are significantly flooded on the anode side. On the other hand, when some of the GDLs are used on the cathode side they are flooded, leading to increased mass transfer losses. The results at low inlet humidity conditions show that the characteristics of the GDL influence the membrane hydration. It is also shown that inlet humidity on the anode side has a major effect on flooding at the cathode.

Place, publisher, year, edition, pages
2007. Vol. 7, no 4, 306-313 p.
Keyword [en]
flooding, gas diffusion layer, membrane hydration, polymer electrolyte fuel cell, water management, performance, pefc, backing, media
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-16882DOI: 10.1002/fuce.200700003ISI: 000248849000007Scopus ID: 2-s2.0-34548044192OAI: oai:DiVA.org:kth-16882DiVA: diva2:334925
Note
QC 20100525 QC 20110926Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Lindbergh, Göran

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