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SrNb 0.1 Co 0.7 Fe 0.2 O 3− δ Perovskite as a Next‐Generation Electrocatalyst for Oxygen Evolution in Alkaline Solution
Author(s) -
Zhu Yinlong,
Zhou Wei,
Chen ZhiGang,
Chen Yubo,
Su Chao,
Tadé Moses O.,
Shao Zongping
Publication year - 2015
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.201408998
Subject(s) - oxygen evolution , tafel equation , electrocatalyst , perovskite (structure) , catalysis , desorption , chemistry , ionic bonding , inorganic chemistry , materials science , adsorption , ion , crystallography , electrode , electrochemistry , biochemistry , organic chemistry
The perovskite SrNb 0.1 Co 0.7 Fe 0.2 O 3− δ (SNCF) is a promising OER electrocatalyst for the oxygen evolution reaction (OER), with remarkable activity and stability in alkaline solutions. This catalyst exhibits a higher intrinsic OER activity, a smaller Tafel slope and better stability than the state‐of‐the‐art precious‐metal IrO 2 catalyst and the well‐known BSCF perovskite. The mass activity and stability are further improved by ball milling. Several factors including the optimized e g orbital filling, good ionic and charge transfer abilities, as well as high OH − adsorption and O 2 desorption capabilities possibly contribute to the excellent OER activity.