.png){kind=icon}
.png){kind=icon}
Return
Cathode Process in KCl-K2TiF6-TiO2 Molten Salt
.png){kind=icon}
PRE
AI
K
DOI：10.1149/1945-7111/ae62b2.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
In this article, the cathode process in the KCl-K2TiF6-TiO2 melt at a temperature of 800 degrees C was studied using cyclic voltammetry. It was shown that the titanium electroreduction on a tungsten includes three electrode stages, as evidenced by the formation of peaks on the voltammograms at potentials of -0.25, -0.90, and -1.60 V relative to the tungsten electrode potential. Presumably, these stages correspond to the transitions Ti4+ -> Ti3+, Ti3+ -> Ti2+ and Ti2+ -> Ti degrees, respectively. Based on the analysis of diagnostic dependencies, it is noted that all three electrode stages are limited by the diffusion of ions to the electrode surface. Based on electrochemical measurements, parameters were selected and a series of experiments on the electrodeposition of titanium in a potentiostatic mode at a cathode potential of -1.2 V was carried out. As a result, a deposit was obtained in the form of ordered dendrites with a size of 20 to 30 mu m. According the XRD analysis dendrites were represented by titanium whose surface had been oxidized at the contact with air and distilled water during washing. The results obtained indicate the fundamental possibility of electrodeposition of titanium in an electrolyte from available salts using TiO2 as a source of titanium. The possibility of titanium electrodeposition from a KCl-K2TiF6 melt with an addition of TiO2 has been studied.The bases of the mechanism have been established, and the parameters of titanium electrodeposition have been determined.Titanium deposits have been obtained in the form of 20-30 mu m ordered dendrites.
Keywords:
electrochemical engineering
molten salts
titanium
electrode kinetics
inert cathode
Journal
IF:
3.3
Papers:
3.3W
Citations:
9.4W
Organization
Cited Papers