Anodic dissolution of titanium oxycarbide TiC_xO_1-x with different O/C ratio

The performance of TiC_xO_1-x solid solutions with different O/C ratio serving as the anode in electrolysis cell was investigated in NaCl-KCl molten salt. It was found that the electrochemical dissolution occurs from the same potential for all the TiC_xO_1-x. The valance of the dissolved titanium ion depends on the potential applied. Both the dissolution ratio of titanium and the by-product of the anode reaction are dependent on the composition of the anode TiCxO1-x. For high carbon TiC_xO_1-x (x>0.5), all the titanium in TiC_xO_1-x dissolves as titanium ions with carbon monoxide (CO) and carbon (C) as the by-products. For low carbon TiCxO1-x (x<0.5), carbon monoxide and carbon dioxide (CO₂) were detected in anodic gas, titanium partially dissolves as titanium ion and the remaining forms Ti₂O₃. The dissolution ratio of titanium decreases with the increase of oxygen in TiC_xO_1-x.