Pt基金属间化合物氧还原催化剂研究进展

Proton exchange membrane fuel cells have advantages such as high efficiency, cleanliness, and no pollution, and are widely regarded as a promising new energy technology. At present, carbon supported platinum (Pt/C) catalysts are the main catalysts for cathodic oxygen reduction reaction (ORR) in fuel cells, with moderate adsorption strength for fuel and oxygen molecules and good catalytic performance. However, the scarcity of Pt resources and the tendency for aggregation and deactivation limit its practical application. Alloying Pt with transition metals is one of the important strategies to reduce Pt loading and improve ORR catalytic performance. The development of ordered Pt based intermetallic compounds can optimize the electronic structure of disordered alloys, improve catalytic activity, and inhibit transition metal dissolution. This article introduces the research progress of Pt based intermetallic compound catalysts by element type, and summarizes the strategies for controlling the grain growth and sintering of Pt based intermetallic compounds.