Strategies for Reducing the PGM Loading in High Power AEMFC Anodes

Bryan Pivovar, Travis Omasta, Yufeng Zhang, Xiong Peng, John Varcoe, William Mustain, Andrew Park

Research output: Contribution to journalArticlepeer-review

48 Scopus Citations

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). This 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 multilayered 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.

Original languageAmerican English
Pages (from-to)F710-F717
JournalJournal of the Electrochemical Society
Volume165
Issue number9
DOIs
StatePublished - 2018

Bibliographical note

Publisher Copyright:
© The Author(s) 2018.

NREL Publication Number

  • NREL/JA-5900-72002

Keywords

  • anion exchange membrane
  • engineering low PGM
  • fuel cell electrode

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