Recent advancements in nuclear technology, particularly in the development of small modular reactors (SMRs) and the

implementation of enhanced safety protocols, have signifi cantly increased the attractiveness of nuclear energy as a sustainable

power source. This growing demand for nuclear energy, coupled with the proliferation of SMRs, has led to a heightened

demand for uranium, consequently driving up its market price. As uranium resources become increasingly scarce, there is a

growing interest in technologies that recycle used nuclear fuel or reuse as fuel. Pyroprocessing is an advanced technique for

recycling used nuclear fuel from light-water reactors into metallic fuel suitable for fast reactors. This process, which relies

on molten salt, involves the reduction of UNF to the metal via oxide reduction using a Li 2 O–LiCl salt as an electrolyte.

Subsequently, fuel components are recovered through electrorecovery methods, including electrorefi ning and electrowinning,

utilizing a LiCl–KCl–UCl 3 salt. This review paper examines the critical technologies involved in oxide reduction and

electrorecovery processes, which are essential for commercializing of these techniques. It provides a comprehensive overview

of recent research and literature, with a specifi c emphasis on the development of electrode materials that enhance process

effi ciency, the production of UCl 3 for electrorecovery, and key advancements in electrowinning technology.