Vanadium-oxide-based electrode materials for Li-ion batteries

Abstract

Vanadium pentoxide (V2O5) with a layered crystalline structure is a promising cathode material for lithium-ion batteries (LIBs) However, several problems largely restrict the battery performance of V2O5, such as small Li + diffusion coefficient, low electrical conductivity, irreversible phase transitions, and dissolution of vanadium into the electrolyte. Therefore, V2O5 exhibits poor rate capability and cycling stability. This thesis aims to improve the performance of V2O5 in regard to its electrical conductivity, lithium diffusion coefficient, and structural stability of V2O5 by using strategies, such as nanostructuring, element doping, adding carbon additives, and conductive polymer coating. .