Open AccessSome peculiarities of the anodic behavior of Co2Si electrode in sulphuric acid solution
Author(s) -
В. И. Кичигин,
А. B. Shein
Publication year - 2020
Publication title -
vestnik permskogo universiteta. seriâ himiâ
Language(s) - English
Resource type - Journals
ISSN - 2223-1838
DOI - 10.17072/2223-1838-2020-2-212-220
Subject(s) - electrode , electrochemistry , dissolution , anode , materials science , electrical impedance , oxide , inorganic chemistry , analytical chemistry (journal) , chemistry , metallurgy , organic chemistry , electrical engineering , engineering
The effect of anodic film formation conditions on the electrochemical behavior of Co2Si electrode in 0.5 M H2SO4 has been studied. It was shown that the rate of passive dissolution of Co2Si is only moderately greater than that of CoSi2 provided the Co2Si electrode passes through the active dissolution region very quickly. From the current decay curves at E = const, it was deduced that in the middle part of the passive region the oxide film on Co2Si grows according to near logarithmic law. Impedance spectra obtained in measurements at different initial electrode potentials were analyzed.