Jump to main content
Jump to site search

Issue 25, 2017
Previous Article Next Article

K-doped Sr2Fe1.5Mo0.5O6−δ predicted as a bifunctional catalyst for air electrodes in proton-conducting solid oxide electrochemical cells

Author affiliations

Abstract

Perovskite oxides are promising electrodes for oxygen evolution and reduction reactions (OER/ORR), but it is difficult for a single material to catalyze both reactions efficiently. We investigated using first-principles calculations the K-doped Sr2Fe1.5Mo0.5O6−δ mixed proton–electron conducting oxide. We found that aliovalent doping tunes the electronic features to be optimal for the ORR and lattice expansion-driven surface reconstruction stabilizes the key *OOH intermediate for the OER. The resulting ORR/OER overpotentials are very low (∼0.5 V), suggesting the application of this material as an air electrode in reversible solid oxide electrochemical cells.

Graphical abstract: K-doped Sr2Fe1.5Mo0.5O6−δ predicted as a bifunctional catalyst for air electrodes in proton-conducting solid oxide electrochemical cells

Back to tab navigation

Supplementary files

Publication details

The article was received on 17 Apr 2017, accepted on 04 Jun 2017 and first published on 05 Jun 2017


Article type: Communication
DOI: 10.1039/C7TA03340K
Citation: J. Mater. Chem. A, 2017,5, 12735-12739
  •   Request permissions

    K-doped Sr2Fe1.5Mo0.5O6−δ predicted as a bifunctional catalyst for air electrodes in proton-conducting solid oxide electrochemical cells

    A. B. Muñoz-García and M. Pavone, J. Mater. Chem. A, 2017, 5, 12735
    DOI: 10.1039/C7TA03340K

Search articles by author

Spotlight

Advertisements