Catalytic effects of graphene structures on Pt/graphene catalysts
Zhenzhen Du, Fan Yu, Jun Wang, Jiongli Li, Xudong Wang, Aniu Qian
Abstract
-air PEMFCs is better than that of commercial Pt/C catalysts. The excellent ORR catalytic performance of Pt/P-NRGO compared to that of the other three Pt/graphene catalysts is ascribed to the high nitrogen species content of P-NRGO that can facilitate the uniform dispersion of Pt particles and provide accessible active sites for ORR. The results indicate that the specific surface area (SSA) and heteroatom dopants have strong influence on the Pt particle size, and that the nitrogen species of graphene supports play a more important role than the oxygen species, specific surface area and pore volume for the Pt/graphene catalysts in providing accessible active sites.
Topics & Concepts
GrapheneCatalysisMaterials scienceNanotechnologyChemical engineeringChemistryOrganic chemistryEngineeringGraphene research and applicationsAdvancements in Battery MaterialsElectrocatalysts for Energy Conversion