Open Access
Water electrolysis on La1−xSrxCoO3−δ perovskite electrocatalysts
Тип публикации: Journal Article
Дата публикации: 2016-03-23
scimago Q1
wos Q1
БС1
SJR: 4.761
CiteScore: 23.4
Impact factor: 15.7
ISSN: 20411723
PubMed ID:
27006166
General Chemistry
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy
Краткое описание
Perovskite oxides are attractive candidates as catalysts for the electrolysis of water in alkaline energy storage and conversion systems. However, the rational design of active catalysts has been hampered by the lack of understanding of the mechanism of water electrolysis on perovskite surfaces. Key parameters that have been overlooked include the role of oxygen vacancies, B–O bond covalency, and redox activity of lattice oxygen species. Here we present a series of cobaltite perovskites where the covalency of the Co–O bond and the concentration of oxygen vacancies are controlled through Sr2+ substitution into La1−xSrxCoO3−δ. We attempt to rationalize the high activities of La1−xSrxCoO3−δ through the electronic structure and participation of lattice oxygen in the mechanism of water electrolysis as revealed through ab initio modelling. Using this approach, we report a material, SrCoO2.7, with a high, room temperature-specific activity and mass activity towards alkaline water electrolysis.
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Mefford J. T. et al. Water electrolysis on La1−xSrxCoO3−δ perovskite electrocatalysts // Nature Communications. 2016. Vol. 7. No. 1. 11053
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Mefford J. T., Rong X., Abakumov A. M., Hardin W. G., Dai S., Kolpak A. M., Johnston K. P., Stevenson K. J. Water electrolysis on La1−xSrxCoO3−δ perovskite electrocatalysts // Nature Communications. 2016. Vol. 7. No. 1. 11053
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TY - JOUR
DO - 10.1038/ncomms11053
UR - https://doi.org/10.1038/ncomms11053
TI - Water electrolysis on La1−xSrxCoO3−δ perovskite electrocatalysts
T2 - Nature Communications
AU - Mefford, J. Tyler
AU - Rong, Xi
AU - Abakumov, Artem M
AU - Hardin, William G.
AU - Dai, Sheng
AU - Kolpak, Alexie M.
AU - Johnston, Keith P.
AU - Stevenson, Keith J
PY - 2016
DA - 2016/03/23
PB - Springer Nature
IS - 1
VL - 7
PMID - 27006166
SN - 2041-1723
ER -
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@article{2016_Mefford,
author = {J. Tyler Mefford and Xi Rong and Artem M Abakumov and William G. Hardin and Sheng Dai and Alexie M. Kolpak and Keith P. Johnston and Keith J Stevenson},
title = {Water electrolysis on La1−xSrxCoO3−δ perovskite electrocatalysts},
journal = {Nature Communications},
year = {2016},
volume = {7},
publisher = {Springer Nature},
month = {mar},
url = {https://doi.org/10.1038/ncomms11053},
number = {1},
pages = {11053},
doi = {10.1038/ncomms11053}
}
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