Oxygen reduction kinetics of ball-milling synthesis Pd electrocatalysts in acid medium

O. Solorza-Feria, V. Collins-Martinez, R. G. Gonzalez-Huerta, A. Lopez-Ortiz, D. Delgado-Vigil

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Pd, PdSe and PdNi electrocatalyst were synthesized through the ball-milling technique and their catalytic activity evaluated for the oxygen reduction reaction (ORR) in acid medium. These compounds were characterized by mean of transmission electron microscopy (TEM) and X ray diffraction (XRD). TEM images showed highly uniform agglomerates of nanometric size particles. Electrochemical studies, for these compounds supported on carbon Vulcan and dispersed in a Nafion film, were achieved through rotating disc electrode (RDE) technique. Kinetics results in all compounds were a first order reaction with four electrons transfer mechanism to water formation. The incorporation of selenium to palladium catalyst produced a decreased in the catalytic activity, while the addition of Ni favored the cathodic reaction, generating the lowest overpotential (0.36V) of all studied materials at 1 mAcm -2.

Original languageEnglish
Pages (from-to)63-67
Number of pages5
JournalJournal of New Materials for Electrochemical Systems
Volume12
Issue number2-3
StatePublished - Apr 2009
Externally publishedYes

Keywords

  • Mechanical milling
  • Oxygen reduction electrocatalysis
  • Pd base nanoparticles

Fingerprint

Dive into the research topics of 'Oxygen reduction kinetics of ball-milling synthesis Pd electrocatalysts in acid medium'. Together they form a unique fingerprint.

Cite this