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

Abstract

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.

Authors:
ORCiD logo
Publication Date:
Research Org.:
United Technologies Research Center, East Hartford, CT (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Fuel Cell Technologies Office (EE-3F)
OSTI Identifier:
1438960
Alternate Identifier(s):
OSTI ID: 1509878
Grant/Contract Number:  
EE0007652
Resource Type:
Published Article
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Name: Journal of the Electrochemical Society Journal Volume: 165 Journal Issue: 9; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Darling, Robert M. A Hierarchical Model for Oxygen Transport in Agglomerates in the Cathode Catalyst Layer of a Polymer-Electrolyte Fuel Cell. United States: N. p., 2018. Web. doi:10.1149/2.1231807jes.
Darling, Robert M. A Hierarchical Model for Oxygen Transport in Agglomerates in the Cathode Catalyst Layer of a Polymer-Electrolyte Fuel Cell. United States. doi:10.1149/2.1231807jes.
Darling, Robert M. Thu . "A Hierarchical Model for Oxygen Transport in Agglomerates in the Cathode Catalyst Layer of a Polymer-Electrolyte Fuel Cell". United States. doi:10.1149/2.1231807jes.
@article{osti_1438960,
title = {A Hierarchical Model for Oxygen Transport in Agglomerates in the Cathode Catalyst Layer of a Polymer-Electrolyte Fuel Cell},
author = {Darling, Robert M.},
abstractNote = {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.},
doi = {10.1149/2.1231807jes},
journal = {Journal of the Electrochemical Society},
number = 9,
volume = 165,
place = {United States},
year = {2018},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1149/2.1231807jes

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Cited by: 6 works
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