Durability Evaluation of a Fe-N-C Catalyst in Polymer Electrolyte Fuel Cell Environment via Accelerated Stress Tests

Luigi Osmieri, David Cullen, Hoon Chung, Rajesh Ahluwalia, Kenneth Neyerlin

Research output: Contribution to journalArticlepeer-review

51 Scopus Citations

Abstract

An “atomically-dispersed” iron-nitrogen-carbon (Fe–N–C) catalyst was used to provide a systematic comparison of platinum group metal (PGM)-free electrocatalyst degradation as a function of accelerated stress tests (ASTs) in an acidic polymer electrolyte fuel cell (PEFC). It was determined that the majority of catalyst degradation was caused by cell operation in presence of O2. In contrast, potential cycling of the Fe–N–C-containing cathode under inert atmosphere over typical PEFC cathode operation from 0.95 to 0.6 V had little to no effect. The increase in kinetic overpotential is shown to be the major source of the PEFC performance decrease during the ASTs. These results continue to showcase the need for development of robust PGM-free electrocatalysts in concert with improved electrochemical performance.

Original languageAmerican English
Article number105209
Number of pages10
JournalNano Energy
Volume78
DOIs
StatePublished - Dec 2020

Bibliographical note

Publisher Copyright:
© 2020

NREL Publication Number

  • NREL/JA-5900-77098

Keywords

  • Accelerated stress test
  • Active sites loss
  • Durability
  • Kinetic overpotential
  • PGM-Free catalyst

Fingerprint

Dive into the research topics of 'Durability Evaluation of a Fe-N-C Catalyst in Polymer Electrolyte Fuel Cell Environment via Accelerated Stress Tests'. Together they form a unique fingerprint.

Cite this