title: Pt-decorated PdCo@Pd/C core-shell nanoparticles with enhanced stability and electrocatalytic activity for the oxygen reduction reaction.
abstract: A simple method for the preparation of PdCo@Pd core-shell nanoparticles supported on carbon based on an adsorbate-induced surface segregation effect has been developed. The stability of these PdCo@Pd nanoparticles and their electrocatalytic activity for the oxygen reduction reaction (ORR) were enhanced by decoration with a small amount of Pt deposited via a spontaneous displacement reaction. The facile method described herein is suitable for large-scale, lower-cost production and significantly lowers the Pt loading and thus the cost. The as-prepared PdCo@Pd and Pd-decorated PdCo@Pd nanocatalysts have a higher methanol tolerance than Pt/C in the ORR and are promising cathode catalysts for fuel cell applications.
authors.affiliation: Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States.
authors.forename: Deli
authors.initials: D
authors.lastname: Wang
authors.forename: Huolin L
authors.initials: HL
authors.lastname: Xin
authors.forename: Yingchao
authors.initials: Y
authors.lastname: Yu
authors.forename: Hongsen
authors.initials: H
authors.lastname: Wang
authors.forename: Eric
authors.initials: E
authors.lastname: Rus
authors.forename: David A
authors.initials: DA
authors.lastname: Muller
authors.forename: Hector D
authors.initials: HD
authors.lastname: Abruña