In Situ Electrodeposition of Ultralow Pt into NiFe-Metal-Organic Framework/Nickel Foam Nanosheet Arrays as a Bifunctional Catalyst for Overall Water Splitting
Jiongting Yin1, Cheng Wang1, Jie Li1, Shudi Yu1, Zhengying Wu2*（吴正颖）, Yangping Zhang1, and Yukou Du1*（杜玉扣）
1College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
2JiangsuKey Laboratoryfor EnvironmentFunctionalMaterials,Schoolof MaterialsScienceandEngineering,SuzhouUniversityof Scienceand Technology,Suzhou215009,China
3Collegeof Chemicaland EnvironmentalEngineering,YanchengTeachersUniversity,Yancheng224007,China
Inorg. Chem.2024, 63, 11, 5167-5174
Abstract:Exploring highly effective bifunctional electrocatalysts with surface structural advantages and synergistic optimization effects among multimetals is greatly important for overall water splitting. Herein, we successfully synthesized Pt-loaded NiFe-metal-organic framework nanosheet arrays grown on nickel foam (Pt–NiFe-MOF/NF) via a facile hydrothermal-electrodeposition process. Benefiting from large exposed specific surface, optimal electrical conductivity and efficient metal-support interaction endow Pt–NiFe-MOF/NF with highly catalytic performance, exhibiting small overpotential of 261 mV toward oxygen evolution reaction and 125 mV toward hydrogen evolution reaction at a current density of 100 mA cm–2in alkaline medium. More significantly, the assembled water electrolyzer comprising the Pt–NiFe-MOF/NF//Pt–NiFe-MOF/NF couple demands a low cell voltage of 1.45 V to reach 10 mA cm–2. This work renders a viable approach to design dual-functional electrocatalysts with exceptional electrocatalytic activity and stability at high current density, showing the great prospect of water electrolysis for commercial application.
链接：https://pubs.acs.org/doi/10.1021/acs.inorgchem.4c00124
