Journal article
Tailoring manganese oxide with atomic precision to increase surface site availability for oxygen reduction catalysis
Nature communications, v 9(1), pp 4034-7
02 Oct 2018
PMID: 30279490
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Controlling the structure of catalysts at the atomic level provides an opportunity to establish detailed understanding of the catalytic form-to-function and realize new, non-equilibrium catalytic structures. Here, advanced thin-film deposition is used to control the atomic structure of La2/3Sr13MnO3, a well-known catalyst for the oxygen reduction reaction. The surface and sub-surface is customized, whereas the overall composition and d-electron configuration of the oxide is kept constant. Although the addition of SrMnO3 benefits the oxygen reduction reaction via electronic structure and conductivity improvements, SrMnO3 can react with ambient air to reduce the surface site availability. Placing SrMnO3 in the subsurface underneath a LaMnO3 overlayer allows the catalyst to maintain the surface site availability while benefiting from improved electronic effects. The results show the promise of advanced thin-film deposition for realizing atomically precise catalysts, in which the surface and sub-surface structure and stoichiometry are tailored for functionality, over controlling only bulk compositions.
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Details
- Title
- Tailoring manganese oxide with atomic precision to increase surface site availability for oxygen reduction catalysis
- Creators
- C. John Eom - Cornell UniversityDing-Yuan Kuo - Cornell UniversityCarolina Adamo - Stanford UniversityEun Ju Moon - Drexel UniversitySteve J. May - Drexel UniversityEthan J. Crumlin - Lawrence Berkeley National LaboratoryDarrell G. Schlom - Cornell UniversityJin Suntivich - Cornell UniversityLawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Publication Details
- Nature communications, v 9(1), pp 4034-7
- Publisher
- Springer Nature
- Number of pages
- 7
- Grant note
- W911NF-15-1-0133 / Army Research Office DMR-1610781; ECCS-15420819 / National Science Foundation; National Science Foundation (NSF) DE-AC02-05CH11231 / Office of Basic Energy Sciences, of the U.S. Department of Energy; United States Department of Energy (DOE) DMR-1120296 / NSF MRSEC program; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) DE-SC-0018029 / U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000446017000002
- Scopus ID
- 2-s2.0-85054168018
- Other Identifier
- 991021934209204721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary