Modeling of low-temperature fuel cell electrodes using non-precious metal catalysts

Nathaniel D. Leonard, Kateryna Artyushkova, Barr Halevi, Alexey Serov, Plamen Atanassov, Scott Calabrese Barton

Research output: Contribution to journalArticle

  • 18 Citations

Abstract

An electrode-scale, transport model for a proton-exchange-membrane fuel cell (PEMFC) cathode is presented. The model describes the performance of non-precious metal catalysts for the oxygen reduction reaction in a fuel cell context. Because of its relatively high thickness, emphasis is placed on phenomena occurring in the cathode layer. Water flooding is studied in terms of its impact on gas-phase transport and on electrochemically accessible surface area (ECSA). Although cathode performance in both air and oxygen are susceptible to ECSA loss, gas diffusion limitations at high current density in air are more significant. In oxygen, catalyst utilization at high current density is primarily limited by conductivity. For this reason, air fuel cell data is recommended over oxygen data for characterizing catalyst performance. Due to both ohmic and mass transport limitations, increased loading of low-cost catalysts does not necessarily lead to higher performance. Therefore, careful optimization of catalyst layer thickness is required.

LanguageEnglish (US)
PagesF1253-F1261
JournalJournal of the Electrochemical Society
Volume162
Issue number10
DOIs
StatePublished - 2015

Profile

fuel cells
Fuel cells
Metals
catalysts
Electrodes
Catalysts
electrodes
Oxygen
Cathodes
metals
oxygen
high current
air
Current density
Temperature
Air
cathodes
current density
cell cathodes
gaseous diffusion

ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Leonard, N. D., Artyushkova, K., Halevi, B., Serov, A., Atanassov, P., & Barton, S. C. (2015). Modeling of low-temperature fuel cell electrodes using non-precious metal catalysts. Journal of the Electrochemical Society, 162(10), F1253-F1261. DOI: 10.1149/2.0311510jes

Modeling of low-temperature fuel cell electrodes using non-precious metal catalysts. / Leonard, Nathaniel D.; Artyushkova, Kateryna; Halevi, Barr; Serov, Alexey; Atanassov, Plamen; Barton, Scott Calabrese.

In: Journal of the Electrochemical Society, Vol. 162, No. 10, 2015, p. F1253-F1261.

Research output: Contribution to journalArticle

Leonard, ND, Artyushkova, K, Halevi, B, Serov, A, Atanassov, P & Barton, SC 2015, 'Modeling of low-temperature fuel cell electrodes using non-precious metal catalysts' Journal of the Electrochemical Society, vol. 162, no. 10, pp. F1253-F1261. DOI: 10.1149/2.0311510jes
Leonard ND, Artyushkova K, Halevi B, Serov A, Atanassov P, Barton SC. Modeling of low-temperature fuel cell electrodes using non-precious metal catalysts. Journal of the Electrochemical Society. 2015;162(10):F1253-F1261. Available from, DOI: 10.1149/2.0311510jes
Leonard, Nathaniel D. ; Artyushkova, Kateryna ; Halevi, Barr ; Serov, Alexey ; Atanassov, Plamen ; Barton, Scott Calabrese. / Modeling of low-temperature fuel cell electrodes using non-precious metal catalysts. In: Journal of the Electrochemical Society. 2015 ; Vol. 162, No. 10. pp. F1253-F1261
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