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Oxygen Electrocatalysis: Symmetry‐Broken Atom Configurations at Grain Boundaries and Oxygen Evolution Electrocatalysis in Perovskite Oxides (Adv. Energy Mater. 34/2018)
Author(s) -
Heo Yoon,
Choi Seungkyu,
Bak Jumi,
Kim HyeSung,
Bae Hyung Bin,
Chung SungYoon
Publication year - 2018
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201870146
Subject(s) - electrocatalyst , oxygen evolution , grain boundary , materials science , oxygen , perovskite (structure) , chemical physics , atom (system on chip) , condensed matter physics , atomic units , symmetry (geometry) , chemistry , crystallography , electrode , physics , metallurgy , microstructure , quantum mechanics , computer science , embedded system , electrochemistry , geometry , organic chemistry , mathematics
In article number 1802481 , Sung‐Yoon Chung and co‐workers demonstrate that grain boundaries (GBs) in LaCoO 3 and LaMnO 3 are exceptionally active sites for oxygen evolution reaction (OER) electrocatalysis. By using a combination of bicrystal thin films, atomic‐scale direct observations, and theoretical calculations, this work elucidates the strong correlation between the symmetry‐broken atomic displacements at GBs and the variation of electronic structure to facilitate the charge transfer and thus the OER activity.