Li+ ions diffusion coefficient in V2O5:MoO3 Sol-Gel films

ABSTRACTPresent work shows results of Li+ ions insertion and extraction from vanadium pentoxide doped with 5 mol% of molybdenum trioxide (V2O5:MoO3) thin films. The characterizations were performed by cyclic voltammetry (CV), potentiostatic intermittent titration technique (PITT), and electrochemical impedance spectroscopy (EIS). The obtained results revealed Li+ diffusional behavior for anodic and cathodic processes, and it was found that Li+ diffusion coefficient (D) values obtained from CV, PITT, and EIS varied from 10−10 to 10−12 cm2 s−1. Finally, a diffusion of Li+ process was modeled by solving Fick equation with constant D in plane sheet geometry.