Synthesis of Pd@MoOx electrocatalysts for oxygen reduction reaction in alkaline media

A. G. Dylla, K. J. Stevenson

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

We describe the synthesis of carbon-supported Pd@MoOx nanoparticles by a one pot reaction involving Pd(acetylacetonate)2 and MoCl3 with octadecanol, oleylamine and diphenyl ether acting as reducing agent, ligand stabilizer and solvent, respectively. Mon+ species are initially adsorbed to the XC72 surface while Pd core nanoparticles grow in solution. Later the Pd nanoparticles adsorb to the carbon support and Mo surface species alloy with the Pd nanoparticles to form ∼10 nm Pd@MoO x core@shell nanoparticles. High resolution transmission electron microscopy (HR-TEM), energy dispersive X-ray spectroscopy (EDS) and XPS suggest a phase segregated structure that comprises of a Pd core and an oxidized Mo shell (Pd@MoOx). Cyclic voltammetry (CV) and rotating disk electrode (RDE) measurements show that the core@shell structure enhances the catalytic activity for the oxygen reduction reaction (ORR) in 0.1 M KOH in comparison to Pd/C catalysts.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells 10, PEFC 10
Pages1809-1815
Number of pages7
Edition1 PART 2
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting - Las Vegas, NV, United States
Duration: 10 Oct 201015 Oct 2010

Publication series

NameECS Transactions
Number1 PART 2
Volume33
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

Conference10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting
Country/TerritoryUnited States
CityLas Vegas, NV
Period10/10/1015/10/10

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