Processes at Platinum Electrodes during the Cathode Polarization in Alcohol Erbium Nitrate Solution

The processes at platinum electrodes during the cathode polarization in an alcohol solution of erbium nitrate are discussed. The current density maxima on the cathode branch of voltammograms were found to correspond to the potentials of the hydrogen reduction reactions. The gel-like deposit Er(OH) x...

Full description

Saved in:
Bibliographic Details
Published in:Russian journal of electrochemistry 2024-05, Vol.60 (5), p.348-354
Main Authors: Volchek, S. A., Yakovtseva, V. A.
Format: Article
Language:English
Subjects:
Cathodes
Cathodic polarization
Chemical reduction
Chemistry
Chemistry and Materials Science
Electrochemistry
Electrode polarization
Electrodes
Erbium
Hydrogen reduction
Physical Chemistry
Platinum
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The processes at platinum electrodes during the cathode polarization in an alcohol solution of erbium nitrate are discussed. The current density maxima on the cathode branch of voltammograms were found to correspond to the potentials of the hydrogen reduction reactions. The gel-like deposit Er(OH) x (NO 3 ) y (С 2 Н 5 О) z · n H 2 O, x + y + z = 3, formed during the cathode treatment was shown to be not a product of the electron exchange between the cathode and the solution components. The following formation mechanism of the erbium-containing deposit has been suggested. First, the electrochemical process of the hydrogen cathode reduction is implemented. This process leads to the ionic unbalance and causes the alkalinization of the cathode space. This creates conditions for the chemical process of the gel-like erbium hydroxide formation, which is physically adsorbed on the cathode surface as a precipitate.
ISSN:1023-1935
1608-3342
DOI:10.1134/S1023193524050070