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A Glass‐Ceramic with Accelerated Surface Reconstruction toward the Efficient Oxygen Evolution Reaction
Author(s) -
Li Shanlin,
Li Zichuang,
Ma Ruguang,
Gao Chunlang,
Liu Linlin,
Hu Lanping,
Zhu Jinlin,
Sun Tongming,
Tang Yanfeng,
Liu Danmin,
Wang Jiacheng
Publication year - 2021
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.202014210
Subject(s) - overpotential , materials science , oxygen evolution , amorphous solid , ceramic , chemical engineering , adsorption , glass ceramic , oxygen , electrochemistry , metallurgy , chemistry , crystallography , electrode , organic chemistry , engineering
The effective non‐precious metal catalysts toward the oxygen evolution reaction (OER) are highly desirable for electrochemical water splitting. Herein, we prepare a novel glass‐ceramic (Ni 1.5 Sn@triMPO 4 ) by embedding crystalline Ni 1.5 Sn nanoparticles into amorphous trimetallic phosphate (triMPO 4 ) matrix. This unique crystalline‐amorphous nanostructure synergistically accelerates the surface reconstruction to active Ni(Fe)OOH, due to the low vacancy formation energy of Sn in glass‐ceramic and high adsorption energy of PO 4 3− at the V O sites. Compared to the control samples, this dual‐phase glass‐ceramic exhibits a remarkably lowered overpotential and boosted OER kinetics after surface reconstruction, rivaling most of state‐of‐the‐art electrocatalysts. The residual PO 4 3− and intrinsic V O sites induce redistribution of electron states, thus optimizing the adsorption of OH* and OOH* intermediates on metal oxyhydroxides and promoting the OER activity.