Abstract
It was established that the number of active sites for the insertion/extraction of lithium ions in/from the V2O5 structure in EC-DMC/Li-salt solutions depends on superhalogen anion. Unstable sites and their dependence on superhalogen anion (PF6 –, AsF6 –, ClO4 –) are identified during discharge-charge cycling of V2O5 electrodes. The number of open sites in V2O5 depends on the structure stability and conductivity of V2O5. To increase the structure stability in phase transitions, we propose the electrochemical doping of V2O5 by Mn2+. We propose that the conductivity and rate characteristics of V2O5 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.
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