Iridium-based double perovskites for efficient water oxidation in acid media

Oscar Diaz-Morales, Stefan Raaijman, Ruud Kortlever, Patricia J. Kooyman, Tim Wezendonk, Jorge Gascon, W. T. Fu, Marc T.M. Koper*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

309 Scopus citations


The development of active, cost-effective and stable oxygen-evolving catalysts is one of the major challenges for solar-to-fuel conversion towards sustainable energy generation. Iridium oxide exhibits the best available compromise between catalytic activity and stability in acid media, but it is prohibitively expensive for large-scale applications. Therefore, preparing oxygen-evolving catalysts with lower amounts of the scarce but active and stable iridium is an attractive avenue to overcome this economical constraint. Here we report on a class of oxygen-evolving catalysts based on iridium double perovskites which contain 32 wt% less iridium than IrO2 and yet exhibit a more than threefold higher activity in acid media. According to recently suggested benchmarking criteria, the iridium double perovskites are the most active catalysts for oxygen evolution in acid media reported until now, to the best of our knowledge, and exhibit similar stability to IrO2.

Original languageEnglish (US)
Article number12363
JournalNature Communications
StatePublished - Aug 8 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© The Author(s) 2016.

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)


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