Kinetics of oxygen reduction reaction at tin-adatoms-modified gold electrodes in acidic media |
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| Authors: | Md Rezwan Miah Takeo Ohsaka |
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| Affiliation: | aDepartment of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Mail Box G1-5, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan |
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| Abstract: | In the present report, oxygen reduction reaction (ORR) at polycrystalline gold (Au (poly)) electrode in situ modified by the underpotential deposition (upd) of Sn-adatoms is addressed. The ORR was investigated at the Sn-adatoms-modified Au (poly) electrode by the hydrodynamic voltammetric technique with a view to evaluating the various related kinetic parameters. The results demonstrated that the underpotential deposited Sn-adatoms on the Au (poly) electrode substantially promoted the activity of the electrode towards an exclusive one-step four-electron ORR forming H2O as the final product. |
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| Keywords: | Underpotential deposition Polycrystalline gold electrode Sn-adatoms Electrocatalysis Oxygen reduction reaction |
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