Enhanced stability of Pt nanoparticle electrocatalysts for fuel cells

摘要: Although polymer electrolyte membrane fuel cells (PEMFCs) have received broad attention due to their virtually zero emission, high power density, and efficiency, at present the limited stability of electrocatalysts used in PEMFCs is a critical limitation large-scale commercialization. As type popularly electrocatalyst material, carbon black supported platinum (Pt/C)—although highly efficient—undergoes corrosion carbon, Pt dissolution, Ostwald ripening, aggregation nanoparticles (NPs) under harsh chemical electrochemical oxidation conditions, which results performance degradation electrocatalysts. In order overcome these disadvantages, many groups tried improve support materials on loaded. It has been found that some novel nanomaterials noncarbon with surface areas, sufficient anchoring sites, electrical conductivities, resistance strongly oxidizing condition are ideal alternative supports. This review highlights following aspects: (i) Recent advances using enhance long-term durability electrocatalysts; (ii) solutions conductivity, area, strong interaction between metal supports; (iii) synergistic effects hybrid supports help