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Single‐Crystal Cobalt Phosphate Nanosheets for Biomimetic Oxygen Evolution in Neutral Electrolytes
Author(s) -
Shao Yue,
Xiao Xue,
Zhu YunPei,
Ma TianYi
Publication year - 2019
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.201909326
Subject(s) - oxygen evolution , catalysis , cobalt , electrolyte , materials science , chemical engineering , oxygen , chemistry , nanotechnology , inorganic chemistry , electrochemistry , electrode , organic chemistry , biochemistry , engineering
To improve energy conversion efficiency, the development of active electrocatalysts with similar structural features to photosynthesis II systems (PS‐II), which can efficiently catalyze the oxygen evolution reaction (OER), have received great research interest. Crystalline cobalt phosphate nanosheets are designed as an efficient OER catalyst in neutral media, showing outstanding performance that even outperforms the noble RuO 2 benchmark. The correlation of experimental and computational results reveals that the active sites are the edge‐sharing CoO 9 structural motif, akin to the molecular geometry of PS‐II. This unique structure can facilitate reaction intermediate adsorption and decrease the reaction energy barrier, thus improving the OER kinetics.