This　research　focused　on　analyzing　the　electrochemical　properties　of　tantalum　ions　in　NaCl-KCl　molten　salt　during　the　extraction　of　tantalum　and　the　synthesis　of　tantalum　nano-powder.　Tantalum　ions　were　dissolved　from　the　anode.　Linear　sweep　voltammetry,　cyclic　voltammetry,　square　wave　voltammetry,　and　chronoamperometry　were　employed　to　delve　into　the　reduction　and　diffusion　processes　of　tantalum　ions.　The　study　determined　the　diffusion　coefficient,　the　nucleation　process,　and　the　deposition　potential　for　tantalum　ions.　The　findings　revealed　that　the　electrode　reduction　process　of　tantalum　ions　involved　a　three-step　reaction:　Ta5+→Ta3+→Ta+→Ta.　This　reaction　was　shown　to　be　reversible　and　diffusion-controlled.　The　nucleation　mode　of　tantalum　ions　was　identified　as　instantaneous　nucleation　followed　by　progressive　nucleation　as　the　potential　increased　by　chronoamperometry　analysis.　The　cathodic　deposition　product　was　characterized　using　XRD,　SEM,　EDS,　and　TEM　techniques,　confirming　the　nanoscale　granular　nature　and　microstructure　of　the　deposition　products.　©　2024　Elsevier　Ltd