Effect of Superhalogen Anions on the Electrochemical Behavior of V2O5 Electrodes in Redox Reactions with Lithium in EC-DMC/Li-Salt Solutions

It was established that the number of active sites for the insertion/extraction of lithium ions in/from the V 2 O 5 structure in EC-DMC/Li-salt solutions depends on superhalogen anion. Unstable sites and their dependence on superhalogen anion (PF 6 – , AsF 6 – , ClO 4 – ) are identified during discharge-charge cycling of V 2 O 5 electrodes. The number of open sites in V 2 O 5 depends on the structure stability and conductivity of V 2 O 5 . To increase the structure stability in phase transitions, we propose the electrochemical doping of V 2 O 5 by Mn 2+ . We propose that the conductivity and rate characteristics of V 2 O 5 could be increased by its co-deposition with conducting polymer of polyaniline type. Using theoretical calculation simulations assumptions have been made regarding the difference in the solvation of lithium ions in an EC/DMC mixture with different ratios of the solvents.