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Cold-Start Characteristics of Polymer Electrolyte Fuel Cells: A Simplified Analysis

[+] Author Affiliations
Yun Wang, Jeff Mishler

The University of California, Irvine, Irvine, CA

Partha P. Mukherjee

Oak Ridge National Lab, Oak Ridge, TN

Rangachary Mukundan, Rodney L. Borup

Los Alamos National Lab, Los Alamos, NM

Paper No. IHTC14-23004, pp. 97-102; 6 pages
doi:10.1115/IHTC14-23004
From:
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 5
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4940-8 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME

abstract

In this paper, we investigate the electrochemical reaction kinetics, species transport, and solid water dynamics in a polymer electrolyte fuel cell (PEFC) during cold start. A simplified analysis is developed to enable the evaluation of the impact of ice volume fraction on cell performance during cold-start. Supporting neutron imaging data are also provided to reveal the real-time water evolution. Temperature-dependent voltage changes due to the reaction kinetics and ohmic loss are also analyzed based on the ionic conductivity of the membrane at subfreezing temperature. The analysis is valuable for the fundamental study of PEFC cold-start.

Copyright © 2010 by ASME

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