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- W2799503487 abstract "Thanks to the substantial efforts devoted by scientists like Radoslav Adzic in the past few decades, significant progress has been made in improving the activity and durability of platinum toward the oxygen reduction reaction (ORR), making it now practical catalysts for proton exchange membrane fuel cells (PEMFCs) in automotive fuel cells and many other applications.1 Several pathways have been developed to improve the inherent ORR performance of Pt and its utilization, which guides and is guided by the fundamental understandings of the ORR catalysis gained by combined experimental and computational efforts. The most popular strategy is to alloy Pt with a wide range of transition metals (denoted as M) including but not limited to Cr, Ni, Y, Pd, and Au.2-6 The strain and/or ligand effects induced by M improve the ORR kinetics via optimizing the Pt-O binding energy and surface coordinate configuration. In particular, a new electrocatalyst that uses a single layer of platinum on the core of M initiated by Adzic's group not only greatly enhances the Pt utilization, but provides a well-defined nanoscale system for fundamental studies.5 The second method involves supporting Pt nanoclusters on various metal oxides such as NbOx,7 and the strong metal and support interactions are believed to account for the improved durability and/or activity towards the ORR. The third pathway is to directly decorate the Pt surface with metal oxides that stabilize the favorable Pt3M(111) surface morphology via stabilization of shaped Pt nanoclusters enriched with low-coordinate Pt sites and subsurface M against acidic dissolution.8,9 In this talk, recent achievements in the three pathways and the associated fundamental understandings will be presented." @default.
- W2799503487 created "2018-05-17" @default.
- W2799503487 date "2018-01-01" @default.
- W2799503487 modified "2023-09-26" @default.
- W2799503487 title "(Invited) Pathways Towards Enabling Platinum for Oxygen Reduction Reaction" @default.
- W2799503487 doi "https://doi.org/10.1149/ma2018-01/37/2177" @default.
- W2799503487 hasPublicationYear "2018" @default.
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