The electrochemical behaviour of titanium electrodes is studied in molten Li2CO3 + Na2CO3 and Li2CO3 + K2CO3 under the anodic conditions used in molten carbonate fuel cells. Although Ti(IV), in a Li2TiO3 form, is the only stable titanium species in these media, experimental evidence of electrochemical activity is given by cyclic voltammetric experiments. A thorough analysis of the change in peak currents with scan rate is in agreement with an intercalation-deintercalation phenomenon occuring at the Li2TiO3 surface, formed chemically at the titanium electrode. The amount of charge measured in all the redox processes corroborates the hypothesis of a lithium intercalation. Crystallographic data relative to lithium titanate show that the voltammetric peaks can be attributed to insertion sites within the lattice of this compound.