Hong, Yu-Rim Kim, Kang Min Ryu, Jeong Ho Mhin, Sungwook Kim, Jungin Ali, Ghulam Chung, Kyung Yoon Kang, Sukhyun Han, HyukSu 2024-01-19T16:34:23Z 2024-01-19T16:34:23Z 2021-09-05 2020-09 1616-301X https://pubs.kist.re.kr/handle/201004/118173 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. English WILEY-V C H VERLAG GMBH OXYGEN EVOLUTION CATALYSTS EFFICIENT Dual-Phase Engineering of Nickel Boride-Hydroxide Nanoparticles toward High-Performance Water Oxidation Electrocatalysts Article 10.1002/adfm.202004330 1 ADVANCED FUNCTIONAL MATERIALS, v.30, no.38 ADVANCED FUNCTIONAL MATERIALS 30 38 scie scopus 000550664900001 2-s2.0-85088288730 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article OXYGEN EVOLUTION CATALYSTS EFFICIENT dual phase electrocatalyst oxygen evolution reaction phase engineering water splitting