(145b) Bimetallic Ru-Pt and Pt-Co Fuel Cell Catalysts Prepared By Strong Electrostatic Adsorption and Electroless Deposition
AIChE Annual Meeting
Monday, November 14, 2016 - 12:50pm to 1:10pm
XRD, HAADF-STEM, and XEDS characterization showed that the Pt@Ru/C catalysts did not have alloying of the component metals and that the catalysts have bimetallic surface composition. The resulting Pt-Co/C catalysts had particles with irregular morphology that were larger than the seed Co particles. These were determined to have thin alloyed Pt-Co phases and domains of pure Pt. Evaluation of these catalysts showed higher mass activities, with respect to platinum content, compared to commercially available monometallic and bimetallic catalysts. This enhancement in performance is associated with the electronic interaction between Pt and Ru on the catalyst surface and the lattice contraction for Pt-Co alloys.