Intrinsically microporous polymer slows down fuel cell catalyst corrosion

Daping He, Yuanyang Rong, Zongkui Kou, Shichun Mu, Tao Peng, Richard Malpass-Evans, Mariolino Carta, Neil B. McKeown, Frank Marken

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)
161 Downloads (Pure)

Abstract

The limited stability of fuel cell cathode catalysts causes a significant loss of operational cell voltage with commercial Pt-based catalysts, which hinders the wider commercialization of fuel cell technologies. We demonstrate beneficial effects of a highly rigid and porous polymer of intrinsic microporosity (PIM-EA-TB with BET surface area 1027 m2g- 1) in accelerated catalyst corrosion experiments. Porous films of PIM-EA-TB offer an effective protective matrix for the prevention of Pt/C catalyst corrosion without impeding flux of reagents. The results of electrochemical cycling tests show that the PIM-EA-TB protected Pt/C (denoted here as PIM@Pt/C) exhibit a significantly enhanced durability as compared to a conventional Pt/C catalyst.

Original languageEnglish
Pages (from-to)72-76
Number of pages5
JournalElectrochemistry Communications
Volume59
Early online date23 Jul 2015
DOIs
Publication statusPublished - Oct 2015

Keywords

  • Corrosion
  • Electrocatalysis
  • Fuel cells
  • Membrane
  • Stabilization

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