Journal
RSC ADVANCES
Volume 5, Issue 76, Pages 62235-62240Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra08909c
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Funding
- National Natural Science Foundation of China [51322402]
- National High Technology Research and Development Program of China (863 Program) [2012AA062302]
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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 x 10(-5) cm(2) 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.
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