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A Bifunctional Perovskite Catalyst for Oxygen Reduction and Evolution
Author(s) -
Jung JaeIl,
Jeong Hu Young,
Lee JangSoo,
Kim Min Gyu,
Cho Jaephil
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201311223
Subject(s) - cobaltite , bifunctional , perovskite (structure) , catalysis , oxygen evolution , oxygen , microstructure , materials science , inorganic chemistry , chemistry , crystallography , metallurgy , electrochemistry , biochemistry , organic chemistry , electrode
La 0.3 (Ba 0.5 Sr 0.5 ) 0.7 Co 0.8 Fe 0.2 O 3− δ is a promising bifunctional perovskite catalyst for the oxygen reduction reaction and the oxygen evolution reaction. This catalyst has circa 10 nm‐scale rhombohedral LaCoO 3 cobaltite particles distributed on the surface. The dynamic microstructure phenomena are attributed to the charge imbalance from the replacement of A‐site cations with La 3+ and local stress on Co‐site sub‐lattice with the cubic perovskite structure.