期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 136, 期 14, 页码 5229-5232出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja5009954
关键词
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资金
- DOE Hydrogen Initiative Program [DE-FG02-05ER15728]
- MRSEC Program of the National Science Foundation [DMR-0819762]
- National Science Foundation [DGE-1122374]
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 La0.8Sr0.2MnO3-delta (LSMO) and the high intrinsic oxygen evolution reaction (OER) activity of Ba0.5Sr0.5Co0.8Fe0.2O3-delta (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.
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