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Title: Strategies for Reducing the PGM Loading in High Power AEMFC Anodes

Abstract

Anion Exchange Membrane Fuel Cells (AEMFCs) have experienced a significant rise in attention in recent years, largely motivated by the potential to overcome the costs that have plateaued for proton exchange membrane fuel cells. However, despite significant advances in power generation, membrane conductivity, membrane stability, and catalyst activity, the vast majority of high performing AEMFCs are fabricated with a high PGM loading (0.4-0.8 mg cm -2). Our work demonstrates an electrode fabrication method that reduces the anode catalyst loading by 85% while still achieving performance ca. 1 W cm -2 - accomplished by designing a multi-layered electrode comprised of an optimized ionomer:carbon:PGM ratio catalyst layer coupled with a hydrophobic microporous layer. If paired with a high-performing PGM-free cathode, this new anode shows the potential to meet existing DOE PGM loading and performance targets.

Authors:
ORCiD logo [1];  [2];  [3];  [1];  [3];  [4]; ORCiD logo [1]
  1. Univ. of South Carolina, Columbia, SC (United States). Dept. of Chemical Engineering; Univ. of Connecticut, Storrs, CT (United States). Dept. of Chemical and Biomolecular Engineering
  2. Univ. of Connecticut, Storrs, CT (United States). Dept. of Chemical and Biomolecular Engineering
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  4. Univ. of Surrey, Guildford (United Kingdom). Dept. of Chemistry
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); Engineering and Physical Sciences Research Council (EPSRC)
OSTI Identifier:
1458839
Alternate Identifier(s):
OSTI ID: 1461858
Report Number(s):
NREL/JA-5900-72002
Journal ID: ISSN 0013-4651
Grant/Contract Number:  
AC36-08GO28308; SC0010531; EP/M014371/1
Resource Type:
Journal Article: Published Article
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 165; Journal Issue: 9; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; anion exchange membrane fuel cell; electrode engineering; low PGM

Citation Formats

Omasta, Travis J., Zhang, Yufeng, Park, Andrew M., Peng, Xiong, Pivovar, Bryan, Varcoe, John R., and Mustain, William E. Strategies for Reducing the PGM Loading in High Power AEMFC Anodes. United States: N. p., 2018. Web. doi:10.1149/2.1401809jes.
Omasta, Travis J., Zhang, Yufeng, Park, Andrew M., Peng, Xiong, Pivovar, Bryan, Varcoe, John R., & Mustain, William E. Strategies for Reducing the PGM Loading in High Power AEMFC Anodes. United States. doi:10.1149/2.1401809jes.
Omasta, Travis J., Zhang, Yufeng, Park, Andrew M., Peng, Xiong, Pivovar, Bryan, Varcoe, John R., and Mustain, William E. Thu . "Strategies for Reducing the PGM Loading in High Power AEMFC Anodes". United States. doi:10.1149/2.1401809jes.
@article{osti_1458839,
title = {Strategies for Reducing the PGM Loading in High Power AEMFC Anodes},
author = {Omasta, Travis J. and Zhang, Yufeng and Park, Andrew M. and Peng, Xiong and Pivovar, Bryan and Varcoe, John R. and Mustain, William E.},
abstractNote = {Anion Exchange Membrane Fuel Cells (AEMFCs) have experienced a significant rise in attention in recent years, largely motivated by the potential to overcome the costs that have plateaued for proton exchange membrane fuel cells. However, despite significant advances in power generation, membrane conductivity, membrane stability, and catalyst activity, the vast majority of high performing AEMFCs are fabricated with a high PGM loading (0.4-0.8 mg cm-2). Our work demonstrates an electrode fabrication method that reduces the anode catalyst loading by 85% while still achieving performance ca. 1 W cm-2 - accomplished by designing a multi-layered electrode comprised of an optimized ionomer:carbon:PGM ratio catalyst layer coupled with a hydrophobic microporous layer. If paired with a high-performing PGM-free cathode, this new anode shows the potential to meet existing DOE PGM loading and performance targets.},
doi = {10.1149/2.1401809jes},
journal = {Journal of the Electrochemical Society},
number = 9,
volume = 165,
place = {United States},
year = {Thu Jun 21 00:00:00 EDT 2018},
month = {Thu Jun 21 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1149/2.1401809jes

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Works referenced in this record:

Anion-exchange membranes in electrochemical energy systems
journal, January 2014

  • Varcoe, John R.; Atanassov, Plamen; Dekel, Dario R.
  • Energy & Environmental Science, Vol. 7, Issue 10, p. 3135-3191
  • DOI: 10.1039/C4EE01303D

Alkaline polymer electrolyte fuel cells completely free from noble metal catalysts
journal, December 2008

  • Lu, S.; Pan, J.; Huang, A.
  • Proceedings of the National Academy of Sciences, Vol. 105, Issue 52, p. 20611-20614
  • DOI: 10.1073/pnas.0810041106