Influence of the gas diffusion layer compression on the oxygen mass transport in PEM fuel cells

Christoph Simon, Frédéric Hasché, David Müller, Hubert A. Gasteiger

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

31 Zitate (Scopus)

Abstract

The compression of the gas diffusion layer is an important parameter in a fuel cell setup. Its influence on the oxygen mass transport is investigated by the measurement of the limiting current density with diluted oxygen. For low compressions of <15% based on its initial thickness, we found that the oxygen mass transport resistance is increasing significantly in the high current region where condensation takes place due to increased product water formation. We hypothesize that a liquid water film is blocking the oxygen transport pathway at the interface between microporous layer and electrode. Furthermore, we discovered an earlier onset of water condensation at high compressions caused by a reduction of the thermal contact resistance.

OriginalspracheEnglisch
TitelPolymer Electrolyte Fuel Cells 15, PEFC 15
Redakteure/-innenH. A. Gasteiger, A. Z. Weber, V. K. Ramani, T. F. Fuller, R. A. Mantz, H. Uchida, F. N. Buchi, M. Edmundson, C. Coutanceau, J. M. Fenton, S. Mitsushima, T. J. Schmidt, K. Shinohara, K. Swider-Lyons, D. J. Jones, B. S. Pivovar, K. E. Ayers, K. A. Perry, S. R. Narayanan, P. Strasser
Herausgeber (Verlag)Electrochemical Society Inc.
Seiten1293-1302
Seitenumfang10
Auflage17
ISBN (elektronisch)9781607685395
DOIs
PublikationsstatusVeröffentlicht - 2015
VeranstaltungSymposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting - Phoenix, USA/Vereinigte Staaten
Dauer: 11 Okt. 201515 Okt. 2015

Publikationsreihe

NameECS Transactions
Nummer17
Band69
ISSN (Print)1938-6737
ISSN (elektronisch)1938-5862

Konferenz

KonferenzSymposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting
Land/GebietUSA/Vereinigte Staaten
OrtPhoenix
Zeitraum11/10/1515/10/15

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