Communication — Modeling polymer-electrolyte fuel-cell agglomerates with double-trap kinetics
Abstract
A new semi-analytical agglomerate model is presented for polymer-electrolyte fuel-cell cathodes. The model uses double-trap kinetics for the oxygen-reduction reaction, which can capture the observed potential-dependent coverage and Tafel-slope changes. An iterative semi-analytical approach is used to obtain reaction rate constants from the double-trap kinetics, oxygen concentration at the agglomerate surface, and overall agglomerate reaction rate. The analytical method can predict reaction rates within 2% of the numerically simulated values for a wide range of oxygen concentrations, overpotentials, and agglomerate sizes, while saving simulation time compared to a fully numerical approach.
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office
- OSTI Identifier:
- 1379626
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of the Electrochemical Society
- Additional Journal Information:
- Journal Volume: 164; Journal Issue: 11; Journal ID: ISSN 0013-4651
- Publisher:
- The Electrochemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; agglomerate; cathode; double trap kinetics; modeling; oxygen reduction reaction
Citation Formats
Pant, Lalit M., and Weber, Adam Z. Communication — Modeling polymer-electrolyte fuel-cell agglomerates with double-trap kinetics. United States: N. p., 2017.
Web. doi:10.1149/2.0111711jes.
Pant, Lalit M., & Weber, Adam Z. Communication — Modeling polymer-electrolyte fuel-cell agglomerates with double-trap kinetics. United States. https://doi.org/10.1149/2.0111711jes
Pant, Lalit M., and Weber, Adam Z. Fri .
"Communication — Modeling polymer-electrolyte fuel-cell agglomerates with double-trap kinetics". United States. https://doi.org/10.1149/2.0111711jes. https://www.osti.gov/servlets/purl/1379626.
@article{osti_1379626,
title = {Communication — Modeling polymer-electrolyte fuel-cell agglomerates with double-trap kinetics},
author = {Pant, Lalit M. and Weber, Adam Z.},
abstractNote = {A new semi-analytical agglomerate model is presented for polymer-electrolyte fuel-cell cathodes. The model uses double-trap kinetics for the oxygen-reduction reaction, which can capture the observed potential-dependent coverage and Tafel-slope changes. An iterative semi-analytical approach is used to obtain reaction rate constants from the double-trap kinetics, oxygen concentration at the agglomerate surface, and overall agglomerate reaction rate. The analytical method can predict reaction rates within 2% of the numerically simulated values for a wide range of oxygen concentrations, overpotentials, and agglomerate sizes, while saving simulation time compared to a fully numerical approach.},
doi = {10.1149/2.0111711jes},
journal = {Journal of the Electrochemical Society},
number = 11,
volume = 164,
place = {United States},
year = {Fri Apr 14 00:00:00 EDT 2017},
month = {Fri Apr 14 00:00:00 EDT 2017}
}
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- Goshtasbi, Alireza; García-Salaberri, Pablo; Chen, Jixin
- Journal of The Electrochemical Society, Vol. 166, Issue 7
The Butler-Volmer Equation for Polymer Electrolyte Membrane Fuel Cell (PEMFC) Electrode Kinetics: A Critical Discussion
journal, January 2019
- Dickinson, Edmund J. F.; Hinds, Gareth
- Journal of The Electrochemical Society, Vol. 166, Issue 4
A Comparison of Models for Transport Resistance in Fuel-Cell Catalyst Layers
journal, January 2018
- Darling, Robert
- Journal of The Electrochemical Society, Vol. 165, Issue 16
A Hierarchical Model for Oxygen Transport in Agglomerates in the Cathode Catalyst Layer of a Polymer-Electrolyte Fuel Cell
journal, January 2018
- Darling, Robert M.
- Journal of The Electrochemical Society, Vol. 165, Issue 9