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

197 Scopus citations

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 (US)
Pages (from-to)5229-5232
Number of pages4
JournalJournal of the American Chemical Society
Volume136
Issue number14
DOIs
StatePublished - Apr 9 2014
Externally publishedYes

Bibliographical note

Funding Information:
This work including most of the developnent of the SWAT scaling algorithm was supported i n part by a contract through the U. S. Air Force and the second author. The authors would like to thank Ms. J. Bressler for the support provided in preparation of this manuscript. We would also like to

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