| 초록 |
Molten salt electrorefining is widely adopted in various industries, including the nuclear industry where pyroprocessing is applied to lower the level of the radioactive wastes. For example, reactor internals of the pressurized water reactors, which are mainly composed of stainless steels, can be decontaminated by electrorefining processes. However, few studies have investigated the acquisition of electrochemical properties in the molten salt using computational modeling. This study obtains the electrochemical properties of the main elements in stainless steel (Fe, Cr, Ni) in molten LiCl-KCl by computational modeling. Cyclic voltammetry of Fe, Cr, and Ni in LiCl-KCl eutectic at 500℃ is performed, and the voltammograms are analyzed by numerical fitting from the modeling using Digielch8. Properties such as apparent standard potential, diffusion coefficient, and heterogeneous rate constants are derived, and the reversibility of the electrode reaction is determined from the properties. |
