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Title: A Hierarchical Model for Oxygen Transport in Agglomerates in the Cathode Catalyst Layer of a Polymer-Electrolyte Fuel Cell

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.1231807jes· OSTI ID:1438960

Numerous experiments have demonstrated that oxygen transport losses in conventional cathode catalyst layers in polymer-electrolyte fuel cells increase as the amount of platinum is decreased. This paper develops an analytical agglomerate model for kinetics and transport that incorporates localized spherical diffusion and adsorption kinetics at the scale of the catalyst nanoparticles. This hierarchical structure provides an improved description of mass transport inside agglomerates at high fluxes. Predictions using morphological parameters and physical properties from the literature are commensurate with published investigations into the influence of platinum loading on oxygen transport.

Research Organization:
United Technologies Research Center, East Hartford, CT (United States); Raytheon Technologies Research Center, East Hartford, CT (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Fuel Cell Technologies Office
Grant/Contract Number:
EE0007652
OSTI ID:
1438960
Alternate ID(s):
OSTI ID: 1509878; OSTI ID: 1883607
Journal Information:
Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Vol. 165 Journal Issue: 9; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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