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 language | English |
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Pages (from-to) | 72-76 |
Number of pages | 5 |
Journal | Electrochemistry Communications |
Volume | 59 |
Early online date | 23 Jul 2015 |
DOIs | |
Publication status | Published - Oct 2015 |
Keywords
- Corrosion
- Electrocatalysis
- Fuel cells
- Membrane
- Stabilization