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Dual‐Phase Engineering of Nickel Boride‐Hydroxide Nanoparticles toward High‐Performance Water Oxidation Electrocatalysts
Author(s) -
Hong YuRim,
Kim Kang Min,
Ryu Jeong Ho,
Mhin Sungwook,
Kim Jungin,
Ali Ghulam,
Chung Kyung Yoon,
Kang Sukhyun,
Han HyukSu
Publication year - 2020
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202004330
Subject(s) - materials science , oxygen evolution , electrocatalyst , hydroxide , boride , water splitting , chemical engineering , catalysis , adsorption , nanoparticle , nickel , surface engineering , nanotechnology , inorganic chemistry , electrode , metallurgy , chemistry , electrochemistry , organic chemistry , photocatalysis , engineering
The development of earth‐abundant and efficient oxygen evolution reaction (OER) electrocatalysts is necessary for green hydrogen production. The preparation of efficient OER electrocatalysts requires both the adsorption sites and charge transfer on the catalyst surface to be suitably engineered. Herein, the design of an electrocatalyst is reported with significantly enhanced water oxidation performance via dual‐phase engineering, which displays a high number of adsorption sites and facile charge transfer. More importantly, a simple chemical etching process enables the formation of a highly metallic transition boride phase in conjunction with the transition metal hydroxide phase with abundant adsorption sites available for the intermediates formed in the OER. In addition, computational simulations are carried out to demonstrate the water oxidation mechanism and the real active sites in this engineered material. This research provides a new material design strategy for the preparation of high‐performance OER electrocatalysts.