Effect of counter cations on electrocatalytic activity of oxide pyrochlores towards oxygen reduction/evolution in alkaline medium: an electrochemical and spectroscopic study

A. K. Shukla, A. M. Kannan, M. S. Hegde, J. Gopalakrishnan

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

A systematic electrochemical and spectroscopic study is conducted to examine the effect of counter cations on the electrocatalytic activities of oxide pyrochlores towards oxygen reduction and evolution reactions in alkaline medium. The study suggests that among the family of oxide pyrochlores, Pb2Ir2O7-y and PbBiRu2O7-y are efficient and stable bifunctional oxygen catalysts. An analysis of the X-ray photoelectron spectra of the oxide pyrochlores supports the postulated pathways for the oxygen reactions.

Original languageEnglish (US)
Pages (from-to)163-173
Number of pages11
JournalJournal of Power Sources
Volume35
Issue number2
DOIs
StatePublished - Jul 1991
Externally publishedYes

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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