Cold-start characteristics of polymer electrolyte fuel cells
Conference
·
OSTI ID:983923
- Los Alamos National Laboratory
- UNIV. CAL. RIVERSIDE
- ORNL
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 simplitied analysis is developed to enable the evaluation of the impact of ice volume fraction on cell performance during coldstart. 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.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 983923
- Report Number(s):
- LA-UR-10-00283; LA-UR-10-283; TRN: US201015%%790
- Resource Relation:
- Conference: The 14th International Heat Transfer Conference (IHTC) ; August 7, 2010 ; Washington, D.C.
- Country of Publication:
- United States
- Language:
- English
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