Process kinetics for the electrocatalytic hydrogen evolution reaction on carbon-based Ni/NiO nanocomposite in a single-chamber microbial electrolysis cell |
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| Affiliation: | 1. Department of Chemical Engineering & Technology, IIT (BHU), Varanasi, 221005, India;2. Department of Chemical Engineering, Harcourt Butler Technical University, Kanpur, 208002, India;3. Department of Environmental Science, Banaras Hindu University, Varanasi, 221005, India;1. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, 430070, China;2. Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan, 430070, China;3. Hubei University of Arts and Science, Xiangyang, 441053, China;4. Key Lab of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China;1. Key Laboratory of Eco-Chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China;2. School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng, Shandong 252000, PR China;1. Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India;2. Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India |
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| Abstract: | To explore the process kinetics of hydrogen evolution reaction (HER) on carbon-based Ni/NiO nanocomposite in the microbial electrolysis cells (MECs), the performance was systematically studied by different time-course sampling of five parallel single-chamber MECs operated under identical operating conditions, which included the electrochemical performance of anodes and cathodes, and the mechanism and kinetics of HER. It was hypothesized that the decreased performance of the nickel cathodes was due to corrosion and Ni dissolution. These results provide valuable insights into the effects of long-term operation on MEC performance. |
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| Keywords: | Microbial electrolysis cell Process kinetics Hydrogen evolution reaction Long-term performance |
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