Interlaced rosette-like MoS2/Ni3S2/NiFe-LDH grown on nickel foam: A bifunctional electrocatalyst for hydrogen production by urea-assisted electrolysis |
| |
| Affiliation: | 1. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials & Ministry-of-Education Key Laboratory for Green Preparation and Application for Functional Materials, Hubei Key Laboratory of Polymer Materials, Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics & Electronic Science, College of Chemistry & Chemical Engineering, Hubei University, Wuhan, 430062, PR China;2. Zhejiang Provincial Key Laboratory of Watershed Science and Health, College of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China;3. School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning, 437100, China;1. School of Material Science and Engineering, University of Jinan, Jinan, China;2. Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong, China;1. Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China;2. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China;3. Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China;4. School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai, 200240, China |
| |
| Abstract: | In targeting the most important energy and environmental issues in current society, the development of low-cost, bifunctional electrocatalysts for urea-assisted electrocatalytic hydrogen (H2) production is an urgent and challenging task. In this work, interlaced rosette-like MoS2/Ni3S2/NiFe-layered double hydroxide/nickel foam (LDH/NF) is successfully synthesized by a two-step hydrothermal reaction. Due to its unique interlaced heterostructure, MoS2/Ni3S2/NiFe-LDH/NF exhibits excellent bifunctional catalytic activity towards the urea oxidation reaction (UOR) and the hydrogen evolution reaction (HER) in 1.0 M KOH with 0.5 M urea. In a concurrent two-electrode electrolyser (MoS2/Ni3S2/NiFe-LDH/NF(+,-)), only voltage of 1.343 V is required to reach 50 mA cm−2, which is 216 mV lower than for pure water splitting. Furthermore, after 16 h of urea electrolysis in 1.0 M KOH with 0.5 M urea, the current density remains at 98% of the original value. Thus, the catalyst is not only favorable for H2 production, but also has great significance for the problem of urea-rich wastewater treatment. |
| |
| Keywords: | Hydrogen production Bifunctional Urea oxidation reaction Hydrogen evolution reaction Urea electrolysis |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
