The electrodeposition of carbon films from carbonate ions (CO32-) in molten alkaline fluorides (LiF/NaF) was investigated in the 700-800 degreesC temperature range using cyclic voltammetry and chronopotentiometry. The cathodic peak in the cyclic voltammogram indicates that CO32- ions are reduced in a one-step process: CO32- +4e(-) --> C + 3O(2-). Deposits of amorphous carbon were obtained by potentiostatic electrolysis and analysed by several physical techniques: X-ray diffraction, Raman spectroscopy. scanning electron microscopy coupled with energy dispersive spectroscopy.