TY - JOUR
T1 - Bimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions
AU - Yuan, Jiaxin
AU - Cheng, Xiaodi
AU - Lei, Chaojun
AU - Yang, Bin
AU - Li, Zhongjian
AU - Luo, Kun
AU - Koko Lam, K. H.
AU - Lei, Lecheng
AU - Hou, Yang
AU - Ostrikov, Kostya Ken
N1 - Funding Information:
Y. Hou expresses appreciation for the assistance of the National Natural Science Foundation of China ( 21922811 , 21878270 , and 21961160742 ), the Zhejiang Provincial Natural Science Foundation of China (LR19B060002), the Fundamental Research Funds for the Central Universities ( 2020XZZX002-09 ), the Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang ( 2019R01006 ), the Startup Foundation for Hundred-Talent Program of Zhejiang University . K. Ostrikov acknowledges partial assistance from the Australian Research Council.
Publisher Copyright:
© 2021 THE AUTHORS
PY - 2021/9
Y1 - 2021/9
N2 - 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.
AB - 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.
KW - 3D hybrid
KW - Bimetallic oxyhydroxide
KW - Electrocatalysis
KW - High current density
KW - Oxygen evolution reaction
UR - http://www.scopus.com/inward/record.url?scp=85118933354&partnerID=8YFLogxK
U2 - 10.1016/j.eng.2020.01.018
DO - 10.1016/j.eng.2020.01.018
M3 - Journal article
AN - SCOPUS:85118933354
SN - 2095-8099
VL - 7
SP - 1306
EP - 1312
JO - Engineering
JF - Engineering
IS - 9
ER -