[en] Electrowinnng is a process to recover uranium and transuranic elements using liquid cadmium cathode (LCC). Major components such as electrodes should be remotely handled and relatively easily replaceable to operate the large-scale electrowinning system. In this paper, the performance of electrodes and LCC crucible was evaluated through cyclic voltammetry (CV) and electrodeposition experiments. In this paper, electrolytic behavior of large-scale LCC electrowinning system was studied. Reasonable CV behavior was obtained using ungrounded power source after dipping of LCC assembly into the electrolytic salt. Electrodeposition experiments were successfully conducted at the current densities of 50 and 70 mA/cm².