Susceptibility of FeS2 hydrogen evolution performance to sulfide poisoning |
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| Affiliation: | 1. Department of Electronic Engineering, Chang Gung University, Taiwan;2. Department of Nephrology, Chang Gung Memorial Hospital, Taiwan;3. Biomedical Engineering Research Center, Chang Gung University, Taiwan;4. Department of Materials Engineering, Ming Chi University of Technology, Taiwan;1. Delft University of Technology, Department of Materials Science and Engineering, Mekelweg 2, 2628 CD Delft, The Netherlands;2. Delft University of Technology, Kavli Institute of Nanoscience, National Centre for HREM, Lorentzweg 1, 2628 CJ Delft, The Netherlands;3. Vrije Universiteit Brussel, Research Group Electrochemical and Surface Engineering, Pleinlaan 2, B-1050 Brussels, Belgium;4. Materials Innovation Institute (M2i), Mekelweg 2, 2628 CD Delft, The Netherlands;1. College of Science, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China;2. Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China;1. Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan;2. Agency for Health, Safety and Environment, Kyoto University, Yoshida-hommachi, Sakyo-ku, Kyoto 606-8501, Japan;3. Department of Fundamental Energy Science, Graduate School of Energy Science, Kyoto University, Yoshida-hommachi, Sakyo-ku, Kyoto 606-8501, Japan;1. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;2. Key Lab of Novel Thin Film Solar Cells, Chinese Academy of Sciences, Hefei 230031, China;3. School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | The imminent depletion of fossil fuels raises concern over the need for next-generation clean energy. Of numerous alternatives, electrochemical water splitting is a promising method to store energy in the form of hydrogen. In order to benefit from this system, technological advancement in the development of affordable and efficient electrocatalysts for hydrogen evolution reaction is necessary. Transition-metal electrocatalysts composing of earth-abundant elements, specifically natural FeS2, has demonstrated excellent performance for hydrogen evolution reaction. However, previous studies on platinum surfaces highlighted the detrimental effect toward hydrogen evolution performance upon poisoning of the active sites. In this work, we examine the susceptibility of natural FeS2 toward sulfide poisoning. Our findings showed that the degradation effect from the introduction of sulfide to natural FeS2 was not as severe as that observed on platinum. The overpotential (at a current density of 10 mA/cm2) for natural FeS2 and platinum increased by approximately 20 and 110 mV, respectively. |
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