Research Project

Development of highly active and durable electrocatalysts by coverage with metal oxide layers


Sakae Takenaka
Sakae Takenaka


Highly active and durable cathode catalysts have been required for the commercialization of polymer electrolyte fuel cells. We have demonstrated that the coverage of Pt cathode catalysts with silica layers improved the durability of Pt catalysts. In the present study, we would examine the diffusion of reactants and products in silica layers of the silica-coated Pt catalysts and the structure of the interface between silica layers and Pt metal particles in the catalysts. We would propose the catalysis of highly active and durable silica-coated Pt catalysts on the basis of the results obtained in the present study.