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Oxygen Evolution Reaction: Electron Correlations Engineer Catalytic Activity of Pyrochlore Iridates for Acidic Water Oxidation (Adv. Mater. 6/2019)
Author(s) -
Shang Chunyan,
Cao Cong,
Yu Dayou,
Yan Yu,
Lin Yitao,
Li Hongliang,
Zheng Tingting,
Yan Xupeng,
Yu Wenchao,
Zhou Shiming,
Zeng Jie
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201970042
Subject(s) - pyrochlore , ionic radius , oxygen evolution , materials science , catalysis , ionic bonding , oxygen , inorganic chemistry , nanoparticle , ion , radius , atomic orbital , metal , chemical engineering , electron , chemistry , nanotechnology , metallurgy , organic chemistry , electrochemistry , physics , computer security , electrode , quantum mechanics , computer science , phase (matter) , engineering
In article number 1805104 , Shiming Zhou, Jie Zeng, and co‐workers develop pyrochlore‐type iridate oxides R 2 Ir 2 O 7 (R = rare‐earth‐metal ions) as highly active and stable oxygen evolution reaction (OER) catalysts for acidic water oxidation, overwhelmingly superior to the benchmark IrO 2 nanoparticles. The increase of the ionic radius of the R species strengthens hybridization between the Ir 5d and O 2p orbitals, which is responsible for the high OER activity.