Abstract
The development of non-Pt hydrogen oxidation reaction catalysts for hydrogen-fuelled polymer electrolyte fuel cells allows for an overall reduction in electrode Pt content and therefore helps reduce the cost of devices, one of the biggest commercial challenges. Herein, a novel ternary alloy catalyst supported on carbon, PdIrAu/C, has been synthesised, characterised and compared to the binary PdIr/C to show how the addition of Au improves the stability of the catalyst. Transmission electron microscopy was utilised to analyse electrode structure as a function of the synthesis method, showing the optimum annealing temperature, of those tested, to be 400 °C, while inductively-coupled plasma mass spectrometry provided analysis of the degradation of the two catalysts, confirming the PdIrAu/C catalyst is more stable at potentials similar to those at a fuel cell anode than PdIr/C.
Original language | English |
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Pages (from-to) | 2893-2901 |
Journal | Electroanalysis |
Volume | 32 |
Issue number | 12 |
DOIs | |
Publication status | Accepted/In press - 2020 |
Keywords
- alloy
- durability
- electrocatalysts
- fuel cells
- gold
- iridium
- palladium
ASJC Scopus subject areas
- Analytical Chemistry
- Electrochemistry