Controlled multivalent‐state vanadium electrolysis via a nitrogen‐doped consumable anode

Abstract Vanadium is a strategically significant metal, indispensable to modern industries due to its unique physical and chemical properties. In this study, three dynamic optimisation challenges are addressed: controlling ionic valence states, regulating irregular product morphologies, and reducing carbon dioxide (CO 2 ) emissions. A simple and innovative method for producing metallic vanadium via electrolysis of a nitrogen‐doped vanadium consumable anode (VC x N y O z ) is proposed and validated. The research compares the polarisation behaviour and reduction mechanisms of vanadium ions to metallic vanadium using two types of consumable anodes (VC x N y O z and VC x O y ). Nitrogen doping stabilises the V 2+ ion through sp 2 ‐hybridised C–N coordination, promoting the formation of a stable [VN 6 ] 3– octahedral complex via V–N bond interactions. The study demonstrates that the VC x N y O z anode effectively regulates the valence state of vanadium ions in molten salt systems, enabling a uniform dendritic morphology and achieving a 30% reduction in CO emissions compared to the VC x O y anode.