La0.8Sr0.2MnO3-δ decorated with Ba0.5Sr0.5Co0.8Fe0.2O 3-δ: A bifunctional surface for oxygen electrocatalysis with enhanced stability and activity

Marcel Risch, Kelsey A. Stoerzinger, Shingo Maruyama, Wesley T. Hong, Ichiro Takeuchi, Yang Shao-Horn

Research output: Contribution to journalArticlepeer-review

145 Citations (Scopus)

Abstract

Developing highly active and stable catalysts based on earth-abundant elements for oxygen electrocatalysis is critical to enable efficient energy storage and conversion. In this work, we took advantage of the high intrinsic oxygen reduction reaction (ORR) activity of La0.8Sr 0.2MnO3-δ (LSMO) and the high intrinsic oxygen evolution reaction (OER) activity of Ba0.5Sr0.5Co 0.8Fe0.2O3-δ (BSCF) to develop a novel bifunctional catalyst. We used pulsed laser deposition to fabricate well-defined surfaces composed of BSCF on thin-film LSMO grown on (001)-oriented Nb-doped SrTiO3. These surfaces exhibit bifunctionality for oxygen electrocatalysis with enhanced activities and stability for both the ORR and OER that rival the state-of-the-art single- and multicomponent catalysts in the literature.

Original languageEnglish
Pages (from-to)5229-5232
Number of pages4
JournalJournal of the American Chemical Society
Volume136
Issue number14
DOIs
Publication statusPublished - 2014 Apr 9

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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