High-Voltage Degradation of Electrodes due to Electrochemical Injection in Liquid Dielectrics

Rezumat

CZU 532.5: 537.58:537.84:538.3: 541.24

 

DOI https://doi.org/10.52577/eom.2021.57.6.36

 

The results of experimental studies of the electrode degradation caused by electrochemical reactions under the action of high-voltage fields are presented. Under study were technical hydrocarbon and polymethylsiloxane (PMS) liquids, their solutions with iodine (I2) at chemically active (Cu) and indifferent (Ti) electrodes. It is shown that in hydrocarbons the Cu electrodes interact intensively with I2, and the cathodic degradation is more intense than the anodic one. The Ti electrodes do not degrade, but physical adsorption of I2 occurs on them in hydrocarbons, and a polymer film forms on them in PMS. The kinetics of degradation in time was studied.

 

Keywords: ion, dipole, polarization, dielectric constant, liquid dielectric, electric field, intensity, electric current, electrochemical reaction, charge injection, electrode degradation.

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