Bimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions

Developing high-performing oxygen evolution reaction (OER) electrocatalysts under high-current operation conditions is critical for future commercial applications of alkaline water electrolysis for clean energy generation. Herein, we prepared a three-dimensional (3D) bimetallic oxyhydroxide hybrid g...

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Autores principales:	Jiaxin Yuan, Xiaodi Cheng, Chaojun Lei, Bin Yang, Zhongjian Li, Kun Luo, K.H. Koko Lam, Lecheng Lei, Yang Hou, Kostya Ken Ostrikov
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Bimetallic oxyhydroxide 3D hybrid Electrocatalysis Oxygen evolution reaction High current density Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/e8fe0cde96e54db086ff9ef3b40ced1b
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spelling	oai:doaj.org-article:e8fe0cde96e54db086ff9ef3b40ced1b2021-11-14T04:32:14ZBimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions2095-809910.1016/j.eng.2020.01.018https://doaj.org/article/e8fe0cde96e54db086ff9ef3b40ced1b2021-09-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2095809921002356https://doaj.org/toc/2095-8099Developing high-performing oxygen evolution reaction (OER) electrocatalysts under high-current operation conditions is critical for future commercial applications of alkaline water electrolysis for clean energy generation. Herein, we prepared a three-dimensional (3D) bimetallic oxyhydroxide hybrid grown on a Ni foam (NiFeOOH/NF) prepared by immersing Ni foam (NF) into Fe(NO3)3 solution. In this unique 3D structure, the NiFeOOH/NF hybrid was composed of crystalline Ni(OH)2 and amorphous FeOOH evenly grown on the NF surface. As a bimetallic oxyhydroxide electrocatalyst, the NiFeOOH/NF hybrid exhibited excellent catalytic activity, surpassing not only the other reported Ni–Fe based electrocatalysts, but also the commercial Ir/C catalyst. In situ electrochemical Raman spectroscopy demonstrated the active FeOOH and NiOOH phases involved in the OER process. Profiting from the synergy of Fe and Ni catalytic sites, the NiFeOOH/NF hybrid delivered an outstanding OER performance under challenging industrial conditions in a 10.0 mol∙L−1 KOH electrolyte at 80 °C, requiring potentials as small as 1.47 and 1.51 V to achieve the super-high catalytic current densities of 100 and 500 mA∙cm−2, respectively.Jiaxin YuanXiaodi ChengChaojun LeiBin YangZhongjian LiKun LuoK.H. Koko LamLecheng LeiYang HouKostya Ken OstrikovElsevierarticleBimetallic oxyhydroxide3D hybridElectrocatalysisOxygen evolution reactionHigh current densityEngineering (General). Civil engineering (General)TA1-2040ENEngineering, Vol 7, Iss 9, Pp 1306-1312 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Bimetallic oxyhydroxide 3D hybrid Electrocatalysis Oxygen evolution reaction High current density Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Bimetallic oxyhydroxide 3D hybrid Electrocatalysis Oxygen evolution reaction High current density Engineering (General). Civil engineering (General) TA1-2040 Jiaxin Yuan Xiaodi Cheng Chaojun Lei Bin Yang Zhongjian Li Kun Luo K.H. Koko Lam Lecheng Lei Yang Hou Kostya Ken Ostrikov Bimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions
description	Developing high-performing oxygen evolution reaction (OER) electrocatalysts under high-current operation conditions is critical for future commercial applications of alkaline water electrolysis for clean energy generation. Herein, we prepared a three-dimensional (3D) bimetallic oxyhydroxide hybrid grown on a Ni foam (NiFeOOH/NF) prepared by immersing Ni foam (NF) into Fe(NO3)3 solution. In this unique 3D structure, the NiFeOOH/NF hybrid was composed of crystalline Ni(OH)2 and amorphous FeOOH evenly grown on the NF surface. As a bimetallic oxyhydroxide electrocatalyst, the NiFeOOH/NF hybrid exhibited excellent catalytic activity, surpassing not only the other reported Ni–Fe based electrocatalysts, but also the commercial Ir/C catalyst. In situ electrochemical Raman spectroscopy demonstrated the active FeOOH and NiOOH phases involved in the OER process. Profiting from the synergy of Fe and Ni catalytic sites, the NiFeOOH/NF hybrid delivered an outstanding OER performance under challenging industrial conditions in a 10.0 mol∙L−1 KOH electrolyte at 80 °C, requiring potentials as small as 1.47 and 1.51 V to achieve the super-high catalytic current densities of 100 and 500 mA∙cm−2, respectively.
format	article
author	Jiaxin Yuan Xiaodi Cheng Chaojun Lei Bin Yang Zhongjian Li Kun Luo K.H. Koko Lam Lecheng Lei Yang Hou Kostya Ken Ostrikov
author_facet	Jiaxin Yuan Xiaodi Cheng Chaojun Lei Bin Yang Zhongjian Li Kun Luo K.H. Koko Lam Lecheng Lei Yang Hou Kostya Ken Ostrikov
author_sort	Jiaxin Yuan
title	Bimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions
title_short	Bimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions
title_full	Bimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions
title_fullStr	Bimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions
title_full_unstemmed	Bimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions
title_sort	bimetallic oxyhydroxide as a high-performance water oxidation electrocatalyst under industry-relevant conditions
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/e8fe0cde96e54db086ff9ef3b40ced1b
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Bimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions

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