Unknown

Dataset Information

0

Highly Active and Stable Pt-Pd Alloy Catalysts Synthesized by Room-Temperature Electron Reduction for Oxygen Reduction Reaction.


ABSTRACT: Carbon-supported platinum (Pt) and palladium (Pd) alloy catalyst has become a promising alternative electrocatalyst for oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. In this work, the synthesis of highly active and stable carbon-supported Pt-Pd alloy catalysts is reported with a room-temperature electron reduction method. The alloy nanoparticles thus prepared show a particle size around 2.6 nm and a core-shell structure with Pt as the shell. With this structure, the breaking of O-O bands and desorption of OH are both promoted in electrocatalysis of ORR. In comparison with the commercial Pt/C catalyst prepared by conventional method, the mass activity of the Pt-Pd/C catalyst for ORR is shown to increase by a factor of ?4. After 10 000-cycle durability test, the Pt-Pd/C catalyst is shown to retain 96.5% of the mass activity, which is much more stable than that of the commercial Pt/C catalyst.

PROVIDER: S-EPMC5396164 | BioStudies | 2017-01-01T00:00:00Z

REPOSITORIES: biostudies

Similar Datasets

1000-01-01 | S-EPMC5791125 | BioStudies
| S-EPMC6648878 | BioStudies
1000-01-01 | S-EPMC6053971 | BioStudies
| S-EPMC3691677 | BioStudies
| S-EPMC6044738 | BioStudies
2015-01-01 | S-EPMC5458862 | BioStudies
1000-01-01 | S-EPMC4738279 | BioStudies
2016-01-01 | S-EPMC6640784 | BioStudies
| S-EPMC7559926 | BioStudies
2018-01-01 | S-EPMC6227960 | BioStudies