Electrodeposition of NiFe layered double hydroxide on Ni3S2 nanosheets for efficient electrocatalytic water oxidation |
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| Affiliation: | 1. State Key Lab of Crystal Materials, Shandong University, Jinan, 250100, China;2. School of Physics, Shandong University, Jinan, 250100, China;1. The China-Germany Research Center for Photonic Materials and Devices, The State Key Laboratory of Luminescent Mate-rials and Devices and the Institute of Optical Communication Materials, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China;2. Chemical Synthesis and Pollution Control, Key Laboratory of Sichuan Province, School of Chemistry and Chemical Industry, China West Normal University, Nanchong 637002, Sichuan, China;3. Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;1. School of Metallurgy and Environment & College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China;2. College of Materials and Chemical Engineering, Hezhou University, Hezhou, 542899, PR China;1. School of Physics, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, Jiangsu 210093, PR China;2. School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471023, PR China;3. State Key Laboratory of Environmental Friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China;4. Fujian Key Laboratory for Functional Materials and Applications, Xiamen University of Technology, Xiamen 361024, PR China;5. Jiangsu Key Laboratory for Nano Technology, Nanjing University, Nanjing, Jiangsu 210093, PR China;6. Kunshan Innovation Institute of Nanjing University, Kunshan, Jiangsu 215347, PR China;7. The School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, PR China;1. School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China;2. Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300350, China;3. School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;4. College of Chemistry Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China;1. College of Mechanical and Automotive Engineering, Anhui Polytechnic University, Wuhu, 241000, China;2. College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu, 241002, China |
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| Abstract: | The oxygen evolution reaction (OER) plays a vital role in various energy conversion applications. Up to now, the highly efficient OER catalysts are mostly based on noble metals, such as Ir- and Ru-based catalysts. Thus, it is extremely urgent to explore the non-precious electrocatalysts with great OER performance. Herein, a simple electrodeposition combined with hydrothermal method is applied to synthesize a non-precious OER catalyst with a three-dimensional (3D) core-shell like structure and excellent OER performance. In our work, NiFe layered double hydroxide (LDH) was electrodeposited on Ni3S2 nanosheets on nickel foam (NF), which exhibits a better performance compared with RuO2, and a low overpotential of 200 mV is needed to reach the current density of 10 mA/cm2 in 1 M KOH. Notably, the Ni3S2/NiFe LDH only need an overpotential of 273 mV to reach the current density of 200 mA/cm2. |
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| Keywords: | NiFe LDH Oxygen evolution reaction Low overpotential 3D nanostructure |
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