Sol–gel fabrication and lithium insertion kinetics of the Mo-doped lithium vanadium oxide thin films Li1+xMoyV3−yO8

摘要: Abstract Thin films of molybdenum-doped vanadium oxide bronzes Li 1+ x Mo y V 3− O 8 (0≤ ≤0.20) were synthesized by sol–gel process in metal alkoxides solution. The influence the applied hydrolysis ratio on particle's shape and size, their location orientation substrate has been investigated. variation both material morphology unit cell geometry changes lithium galvanostatic discharge capacity significantly. There are two factors resulted increasing capacity: decreasing (100) crystallite faces contribution to whole particle surface Mo-doping level . Lithium chemical diffusion coefficient exchange current density interface “film/aprotic + -conducting electrolyte” determined materials having optimized at various concentrations host structure electrochemical impedance spectroscopy.