Закономірності сумісного розряду іонів. Теорія електрохімічного синтезу

V. V. Pototskaya; O. I. Gichan; А. О. Omelchuk

doi:10.15407/dopovidi2021.03.048

Authors

V. V. Pototskaya Vernadskii Institute of General & Inorganic Chemistry of the NAS of Ukraine, Kyiv https://orcid.org/0000-0001-7269-9592
O. I. Gichan Chuiko Institute of Surface Chemistry of the NAS of Ukraine, Kyiv https://orcid.org/0000-0002-5812-9451
А. О. Omelchuk Vernadskii Institute of General & Inorganic Chemistry of the NAS of Ukraine, Kyiv https://orcid.org/0000-0002-8799-2115

DOI:

https://doi.org/10.15407/dopovidi2021.03.048

Keywords:

simultaneous discharge, polarization curve, electrochemical synthesis, alloys

Abstract

The mechanisms of simultaneous discharge of two ions for different conditions of electrode polarization [concentration polarization, mixed (concentration-kinetics) polarization, and kinetic control in the case of delayed discharge of both ions] are shown. We show how the independent processes of discharge of ions become dependent at the simultaneous discharge. The equation of polarization curve for the electrochemical synthesis in the case of concentration polarization of the electrode is derived (we consider the simultaneous discharge of two ions and the proceeding delayed heterogeneous chemical reaction of synthesis). The overvoltage shift depends on the charge of ions discharged, density of discharge currents, density of exchange current of the chemical reaction of synthesis, and difference in the standard potentials.

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References

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