Probing Anion Exchange Membrane Fuel Cell Cathodes by Varying Electrocatalysts and Electrode Processing

Cheng He, Ami Yang-Neyerlin, Bryan Pivovar

Research output: Contribution to journalArticlepeer-review

10 Scopus Citations


To date, several high-performing anion exchange membrane fuel cells (AEMFCs) have been demonstrated, but most these studies have focused on Pt containing cathodes with high loadings. Here, we explore and compare the performance and perform electrochemical diagnostics on three leading AEMFC cathode electrocatalysts: Pt/C, Ag/C, and Fe N C with electrodes that have been processed with either powder or dispersion-based ionomers using perfluorinated anion exchange polymers. Pt/C had the highest performance but also showed a strong dependence on ionomer type, with powder ionomer exhibiting much higher performance. These results were consistent with the observations for Ag/C but did not hold for the Fe N C catalyst where almost no change was observed between powder and dispersion-based ionomers. This is the first-Time the impact of powder and dispersion ionomer with different classes of cathode electrocatalysts on the fuel cell performance have been compared, and the results have strong implications for the ability to achieve high performance at low loadings and for better understanding catalyst-ionomer interactions within AEMFCs.

Original languageAmerican English
Article number024507
Number of pages7
JournalJournal of the Electrochemical Society
Issue number2
StatePublished - 2022

Bibliographical note

Publisher Copyright:
© 2022 The Author(s).

NREL Publication Number

  • NREL/JA-5900-81449


  • anion exchange membrane fuel cell
  • catalyst-ionomer interaction
  • cathode
  • electrocatalysis
  • ionomer


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