Operation of polymer electrolyte membrane fuel cells with dry feeds: Design and operating strategies

Hogarth, W. H. J. and Benziger, B. (2006) Operation of polymer electrolyte membrane fuel cells with dry feeds: Design and operating strategies. Journal Of Power Sources, 159 2: 968-978. doi:10.1016/j.jpowsour.2005.11.079


Author Hogarth, W. H. J.
Benziger, B.
Title Operation of polymer electrolyte membrane fuel cells with dry feeds: Design and operating strategies
Journal name Journal Of Power Sources   Check publisher's open access policy
ISSN 0378-7753
Publication date 2006
Sub-type Article (original research)
DOI 10.1016/j.jpowsour.2005.11.079
Volume 159
Issue 2
Start page 968
End page 978
Total pages 11
Editor C. K. Dyer
D. A. J. Rand
Z. Ogumi
Place of publication Amsterdam
Publisher Elsevier Science Bv
Collection year 2006
Language eng
Subject C1
670704 Plastics in primary forms
290699 Chemical Engineering not elsewhere classified
0904 Chemical Engineering
Abstract The operation of polymer electrolyte membrane fuel cells (PEMFCs) with dry feeds has been examined with different fuel cell flow channel designs as functions of pressure, temperature and flow rate. Auto-humidified (or self-humidifying) PEMFC operation is improved at higher pressures and low gas velocities where axial dispersion enhances back-mixing of the product water with the dry feed. We demonstrate auto-humidified operation of the channel-less, self-draining fuel cell, based on a stirred tank reactor; data is presented showing auto-humidified operation from 25 to 115 degrees C at 1 and 3 atm. Design and operating requirements are derived for the auto-humidified operation of the channel-less, self-draining fuel cell. The auto-humidified self-draining fuel cell outperforms a fully humidified serpentine flow channel fuel cell at high current densities. The new design offers substantial benefits for simplicity of operation and control including: the ability to self-drain reducing flooding, the ability to uniformly disperse water removing current gradients and the ability to operate on dry feeds eliminating the need for humidifiers. Additionally, the design lends itself well to a modular design concept. (c) 2005 Elsevier B.V. All rights reserved.
Keyword Electrochemistry
Energy & Fuels
Pem Fuel Cell
Water Management
Auto-humidification
Stirred Tank Reactor (str)
Flow Channel
Gas-diffusion Layer
Water Transport
Composite Membranes
Stacks
Flow
Multiplicity
Balance
Nafion
Pefc
Load
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
2007 Higher Education Research Data Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 36 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 15 Aug 2007, 09:01:07 EST