Electrocatalytic reactivity for oxygen reduction at epitaxially grown Pd thin layers of various thickness on Au(111) and Au(100)

Hideo Naohara, Shen Ye, Kohei Uosaki

Research output: Contribution to journalConference articlepeer-review

101 Citations (Scopus)

Abstract

Electrochemical reduction of oxygen was studied at the epitaxially grown ultra thin Pd layers of various thicknesses on Au(111) and Au(100) single crystal surfaces in 50 mM HClO4 solution saturated by oxygen. The oxygen reduction at the Pd thin layers on the gold substrate started at more positive potential than that at the gold single crystal surfaces even only a submonolayer of Pd was deposited. The potentials where cathodic current of oxygen reduction started to increase were dependent on the potentials where the oxide of the ultra thin Pd layers was reduced.

Original languageEnglish
Pages (from-to)3305-3309
Number of pages5
JournalElectrochimica Acta
Volume45
Issue number20
DOIs
Publication statusPublished - 2000 Jun 23
Event50st ISE Meeting: Electrochemical Materials Science - Pavia, Italy
Duration: 1999 Sep 51999 Sep 10

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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