TY - JOUR
T1 - A New Family of Perovskite Catalysts for Oxygen-Evolution Reaction in Alkaline Media
T2 - BaNiO3 and BaNi0.83O2.5
AU - Lee, Jin Goo
AU - Hwang, Jeemin
AU - Hwang, Ho Jung
AU - Jeon, Ok Sung
AU - Jang, Jeongseok
AU - Kwon, Ohchan
AU - Lee, Yeayeon
AU - Han, Byungchan
AU - Shul, Yong Gun
N1 - Publisher Copyright:
© 2016 American Chemical Society.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2016/3/16
Y1 - 2016/3/16
N2 - Establishment of a sustainable energy society has been strong driving force to develop cost-effective and highly active catalysts for energy conversion and storage devices such as metal-air batteries and electrochemical water splitting systems. This is because the oxygen evolution reaction (OER), a vital reaction for the operation, is substantially sluggish even with precious metals-based catalysts. Here, we show for the first time that a hexagonal perovskite, BaNiO3, can be a highly functional catalyst for OER in alkaline media. We demonstrate that the BaNiO3 performs OER activity at least an order of magnitude higher than an IrO2 catalyst. Using integrated density functional theory calculations and experimental validations, we unveil that the underlying mechanism originates from structural transformation from BaNiO3 to BaNi0.83O2.5 (Ba6Ni5O15) over the OER cycling process.
AB - Establishment of a sustainable energy society has been strong driving force to develop cost-effective and highly active catalysts for energy conversion and storage devices such as metal-air batteries and electrochemical water splitting systems. This is because the oxygen evolution reaction (OER), a vital reaction for the operation, is substantially sluggish even with precious metals-based catalysts. Here, we show for the first time that a hexagonal perovskite, BaNiO3, can be a highly functional catalyst for OER in alkaline media. We demonstrate that the BaNiO3 performs OER activity at least an order of magnitude higher than an IrO2 catalyst. Using integrated density functional theory calculations and experimental validations, we unveil that the underlying mechanism originates from structural transformation from BaNiO3 to BaNi0.83O2.5 (Ba6Ni5O15) over the OER cycling process.
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U2 - 10.1021/jacs.6b00036
DO - 10.1021/jacs.6b00036
M3 - Article
AN - SCOPUS:84961284982
VL - 138
SP - 3541
EP - 3547
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 10
ER -