Abstract
Lithium isotopes have critical applications in many fields, such as the nuclear industry due to their unique physical and chemical properties. Lithium-6 (6Li) and lithium-7 (7Li) must be separated effectively in order to be utilized. As an alternative separation method to the environmentally hazardous COLEX process, the electrochemical deposition and intercalation method taking advantage of the electrochemical isotope effect and Marcus Theory was proposed for Li isotope separation. In this study, the Li isotope separation tests by electrochemical deposition and intercalation with various cathode substrates such as Cu and graphite in propylene carbonate and 1-Butyl-3-methylimidazolium dicyanamide ([BMIM][DCA]) ionic liquid were conducted. Separation factors close to 1.10 was achieved on multiple substrates. The separation effect in this system is promising for the development of an environmentally friendly and economically feasible industrial Li isotope separation process.
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