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Title: Development of a Simple and Rapid Diagnostic Method for Polymer-Electrolyte Fuel Cells

Abstract

A simple and fast diagnostic tool has been developed for analyzing polymer-electrolyte fuel-cell degradation. The tool is based on analyzing changes in polarization curves of a cell over its lifetime. The shape of the polarization-change curve and its sensitivity to oxygen concentration are found to be unique for each degradation pathway based on analysis from a detailed 2-D numerical model of the cell. Using the polarization-change curve methodology, the primary mechanism for degradation (kinetic, ohmic, and/or transport related) can be identified. Here, the technique is applied to two sets of data to explain performance changes after two different cells undergo voltage-cycling accelerated stress test, where it is found that changes are kinetic and then ohmic or transport in nature depending on the cell type. The diagnostic tool provides a simple method for rapid determination of primary degradation mechanisms. Finally, areas for more detailed future investigations are also summarized.

Authors:
ORCiD logo [1];  [2];  [2]; ORCiD logo [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. United Technologies Research Center, East Hartford, CT (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), Fuel Cell Technologies Office (EE-3F)
OSTI Identifier:
1460303
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 165; Journal Issue: 6; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; diagnostics; modeling; PEFC

Citation Formats

Pant, Lalit M., Yang, Zhiwei, Perry, Michael L., and Weber, Adam Z. Development of a Simple and Rapid Diagnostic Method for Polymer-Electrolyte Fuel Cells. United States: N. p., 2018. Web. doi:10.1149/2.0011806jes.
Pant, Lalit M., Yang, Zhiwei, Perry, Michael L., & Weber, Adam Z. Development of a Simple and Rapid Diagnostic Method for Polymer-Electrolyte Fuel Cells. United States. doi:10.1149/2.0011806jes.
Pant, Lalit M., Yang, Zhiwei, Perry, Michael L., and Weber, Adam Z. Mon . "Development of a Simple and Rapid Diagnostic Method for Polymer-Electrolyte Fuel Cells". United States. doi:10.1149/2.0011806jes. https://www.osti.gov/servlets/purl/1460303.
@article{osti_1460303,
title = {Development of a Simple and Rapid Diagnostic Method for Polymer-Electrolyte Fuel Cells},
author = {Pant, Lalit M. and Yang, Zhiwei and Perry, Michael L. and Weber, Adam Z.},
abstractNote = {A simple and fast diagnostic tool has been developed for analyzing polymer-electrolyte fuel-cell degradation. The tool is based on analyzing changes in polarization curves of a cell over its lifetime. The shape of the polarization-change curve and its sensitivity to oxygen concentration are found to be unique for each degradation pathway based on analysis from a detailed 2-D numerical model of the cell. Using the polarization-change curve methodology, the primary mechanism for degradation (kinetic, ohmic, and/or transport related) can be identified. Here, the technique is applied to two sets of data to explain performance changes after two different cells undergo voltage-cycling accelerated stress test, where it is found that changes are kinetic and then ohmic or transport in nature depending on the cell type. The diagnostic tool provides a simple method for rapid determination of primary degradation mechanisms. Finally, areas for more detailed future investigations are also summarized.},
doi = {10.1149/2.0011806jes},
journal = {Journal of the Electrochemical Society},
number = 6,
volume = 165,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 1 work
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