Electrochemically depositing titanium(III) ions at liquid tin in a NaCl-KCl melt

Handong Jiao, Junxiang Wang, Long Zhang, Ke Zhang, Shuqiang Jiao*

*Corresponding author for this work

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Abstract

The electrochemical behavior of titanium ions at a liquid tin cathode has been investigated by cyclic voltammetry and square wave voltammetry in a NaCl-KCl melt at 1023 K. The results show that the deposition potentials of alkali metals and titanium at liquid tin are more positive than those at a solid tungsten cathode. Meanwhile, the results prove that titanium(III) ions can be reduced at liquid tin with a one-step reduction, Ti3+ + 3e = Ti, which is a quasi-reversible process with diffusion-controlled mass transfer. The diffusion coefficient of titanium(III) ions is 1.05 × 10-5 cm2 s-1. Additionally, galvanostatic electrolysis has been carried out to clarify the effect of the current density on the cathodic products. The result demonstrates that a greater depth of titanium will be diffused into the liquid tin cathode during electrolysis with a lower current density.

Original languageEnglish
Pages (from-to)62235-62240
Number of pages6
JournalRSC Advances
Volume5
Issue number76
DOIs
Publication statusPublished - 2015
Externally publishedYes

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Jiao, H., Wang, J., Zhang, L., Zhang, K., & Jiao, S. (2015). Electrochemically depositing titanium(III) ions at liquid tin in a NaCl-KCl melt. RSC Advances, 5(76), 62235-62240. https://doi.org/10.1039/c5ra08909c