Abstract
To support the proposal for separating uranium from used fuel salt of Molten Salt Reactor (MSR), the electrochemical behavior of UO22+ in the carrier salt of MSR (LiF-BeF2, FLiBe) was investigated in this work. Cyclic voltammetry and square wave voltammetry measurements showed that the reduction of UO22+ in UO2F2-FLiBe melt with addition of KF exhibited one step with two exchanged electrons: UO22+ +2e− →UO2, with reduction peak of 1.93 V (vs. Be2+/Be). By potentiostatic electrolysis, the product of octahedral UO2 single crystals with micron size was obtained.
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