Reduced graphene oxide composite Ni3S2 microspheres grown directly on nickel foam as an efficient electrocatalyst for OER |
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| Affiliation: | 1. Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing, 400715, PR China;2. College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, PR China;3. Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing, 400715, PR China;4. Chongqing Key Laboratory of Green Aviation Energy and Power, The Green Aerotechnics Research Institute of Chongqing Jiaotong University, Chongqing, 401135, PR China;1. Engineering Research Center of Ministry of Education for Fine Chemicals, Shanxi University, Taiyuan 030006, China;2. School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China;1. Federal State Institution «Federal Research Centre «Fundamentals of Biotechnology» of the Russian Academy of Sciences» Leninsky Prospect, 33, Building 2, 119071, Moscow, Russian Federation;2. Federal Government Budgetary Institution of Science. “Federal Scientific Agroengeneering Centre VIM”, 1st Institutskiy Proezd, Building 5, 109428, Moscow, Russian Federation;3. Russian University of Transport, 127994, St. Obraztsova, 9, Bldg. 9, Moscow, Russia;1. College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, PR China;2. College of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, PR China;3. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China;1. Key Laboratory for Nonferrous Materials (MOE), School of Materials Science and Engineering, Central South University, Changsha, 410083, China;2. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, China;1. College of Materials Science and Engineering, Nanjing Tech University, Puzhu South Road No.30, 211816, Nanjing, Jiangsu, China;2. The Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Puzhu South Road No.30, 211816, Nanjing, Jiangsu, China;3. Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Puzhu South Road No.30, 211816, Nanjing, Jiangsu, China |
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| Abstract: | The development of cheap, high-efficiency, and stable oxygen evolution reaction (OER) electrocatalysts is a current research hotspot. In this work, reduced graphene oxide (rGO) composite Ni3S2 microspheres grown directly on nickel foam (Ni3S2-rGO/NF) were prepared by tube furnace calcination and hydrothermal method. The Ni3S2-rGO/NF had excellent OER catalytic activity and stability with an overpotential of 303 mV at the current density of 100 mA cm−2, which was 100 mV lower than that of Ni3S2/NF, and its Tafel slope was as low as 23 mV·dec−1. The main reason for enhancing OER activity of the Ni3S2-rGO/NF is due to synergistic effect of Ni3S2 microspheres and rGO, which inhibited the production of NiS and refined the micron size of Ni3S2. This work offers a new method for developing stable and efficient OER catalysts. |
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| Keywords: | Reduced graphene oxide (rGO) OER Thermal process |
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