Multi-atom Pt and PtRu catalysts for high performance AEMFCs with ultra-low PGM content - Institut Charles Gerhardt - Institut de Chimie Moléculaire et des Matériaux de Montpellier
Article Dans Une Revue (Article De Synthèse) Applied Catalysis B: Environmental Année : 2023

Multi-atom Pt and PtRu catalysts for high performance AEMFCs with ultra-low PGM content

Résumé

To reduce the platinum group metal (PGM) loading in anion exchange membrane fuel cells (AEMFCs), it is important to transition to catalysts with very low PGM content, and eventually to catalysts that are completely PGM-free. In this work, four supported low-PGM Pt and PtRu catalysts were prepared using a new, simple, scalable technique: Controlled Surface Tension (CST) method. CST allows for a high density of very small multiatom clusters. Catalysts were physically characterized using a wide array of techniques and tested for their ORR and HOR activity both ex-situ and integrated into operating AEMFCs. The PGM loading was reduced by a factor of 14 while achieving comparable performance to commercial catalysts. AEMFCs were also assembled with ultralow PGM loading (0.05 mgPGM cm-2), where PtRu anodes were paired with Fe-N-C cathodes to achieve a specific power of 25 W/mg PGM (40 W/mg Pt).

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Catalyse
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Dates et versions

hal-03940771 , version 1 (16-01-2023)

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Horie Adabi, Abolfazl Shakouri, Andrea Zitolo, Tristan Asset, Anastassiya Khan, et al.. Multi-atom Pt and PtRu catalysts for high performance AEMFCs with ultra-low PGM content. Applied Catalysis B: Environmental, 2023, 325, pp.122375. ⟨10.1016/j.apcatb.2023.122375⟩. ⟨hal-03940771⟩
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