Sélection de la langue

Gouvernement du Canada / Government of Canada

Recherche

Application of water barrier layers in a proton exchange membrane fuel cell for improved water management at low humidity conditions

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1016/j.ijhydene.2010.12.108
AuteurRechercher : 1; Rechercher : 1; Rechercher : 1
Affiliation
  1. Conseil national de recherches du Canada. Institut d'innovation en piles à combustible du CNRC
FormatTexte, Article
SujetCatalyst layers; Cathode flow fields; Dry condition; Dry gas; Extreme conditions; Gas diffusion layer; Gas diffusion layers; Low humidity conditions; Operational life; Perforated layers; Transport limitations; Voltage drop; Water barriers; Water saturations; Cathodes; Corrosion resistant alloys; Diffusion in gases; Durability; Failure analysis; Gas hydrates; Gas permeable membranes; Gases; Perforating; Porous materials; Protons; Stainless steel; Steel sheet; Water content; Proton exchange membrane fuel cells (PEMFC)
Résumé
This study discusses the use of an additional layer in the cathode side of a proton exchange membrane fuel cell (PEMFC) for improved water management at dry conditions. The performance of fuel cells deteriorates significantly when low to no gas humidification is used. This study demonstrates that adding a non-porous material with perforations, such as stainless steel, between the cathode flow field plate and the gas diffusion layer (GDL) improves the water saturation in the cathode GDL and catalyst layer, increases the water content in the anode, and keeps the membrane hydrated. The slight voltage drop in the performance as a result of transport limitations is justifiable since the overall durability of the cell at these extreme conditions is enhanced. The results show that the perforated layer(s) enhances the operational life of the PEMFC under completely dry conditions. These extreme conditions (dry gases without humidification, 90 kPa, 75 °C) were used to accelerate the failure modes in the fuel cells. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Date de publication
Dans
  • International Journal of Hydrogen Energy 36, nº 5 (2011) : 3635–3648.
Langueanglais
Publications évaluées par des pairsOui
Numéro NPARC21271424
Exporter la noticeExporter en format RIS
Signaler une correctionSignaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement5d3205e6-c2b9-4a72-a54a-7cd240f22fe6
Enregistrement créé2014-03-24
Enregistrement modifié2020-04-21
Date de modification :