Highly enhanced reduction of rare earth oxides in simulated oxide fuel in Li2O LiCl salt using lithium metal

Recoveryof actinidesand fission products from spent nuclear fuel via electrolytic reduction: Thematic overview

“…Rare‐earth metal oxides in the composition of SNF are practically not reduced to the corresponding metal during electrolysis in the molten salt LiCl + 1.0 wt% Li 2 O salt. This problem was solved in Reference 45 by using metallic Li in LiCl salt without adding any transition metals. Two oxide reduction runs (OR‐1 and OR‐2) were carried out with the different lithium metal content in the molten salt at 650°C.…”

A Corundum Membrane Ni/Ni2+ Reference Electrode for High-Temperature Fluoride Molten Salt

“…Molten salts are attractive electrolytes, which are widely employed in various fields, such as heat transfer and storage medium in light of thermal power station, 1 silicon refining for solar cell, 2 refining and processing of metals, 3,4 and dry reprocessing of spent fuel in nuclear power plant. 5,6 In the processes of the separation and extraction of actinide elements and rare Earth, [7][8][9] electrodeposition of metal oxides, [10][11][12] and preparation of metals and their alloys [13][14][15] by molten salt electrolysis, it is necessary to precisely control the electrode potential, and the control of the electrode potential is usually regulated by the reference electrode. 16,17 Since molten salt has the characteristic of high temperature and corrosion, the reference electrode used in the molten salt must meet some requirements, i.e., when current flows, the electrode potential changes very little, and electrode has a good reusability, stability and reproducibility.…”