DOUBLE-LAYER STRUCTURE ON RENEWED ELECTRODES OF SN-PB ALLOYS IN THE PRESENCE OF ORGANIC-SUBSTANCESстатья
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Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
Аннотация:Impedance measurements of the dependences of the double-layer capacitance on the potential (C, E-curves) were carried out on the electrodes of a Sn-Pb alloy (Pb content was ca. 1 wt %), which were renewed by cutting in Na2SO4 solutions with cyclohexanol and camphor additives. The experimentally observed time changes in the C, E-curves from the moment of the electrode renewal indicate that suface-layer enrichment by lead atoms occurs. Analyzing the experimental data testifies that the rate of this process is abnormally high and depends on the structure of the electrode/solution interface. The possibility of using a model explaining the movement of Pb atoms over the surface through the surface-diffusion mechanism was discussed and substantiated.