Although modern fusion devices consider the use of lithium as a plasma-facing component, its transport mechanism remains under-investigated, being different from those heavy impurities such tungsten. For and other light impurities, turbulent dominates over neoclassical contributions, motivating dedicated study on determination diffusion, thermodiffusion, convective pinch velocity. In this work, we benchmark new method to extract these coefficients using global full-f gyrokinetic GYSELA code. absence barrier, reproduces results consistent with helium, showing that thermodiffusion is comparable in magnitude both diffusion pure convection. Introducing an E×B shear layer form barrier modifies radial structure coefficients. Transport levels decrease inner core, while within convection becomes dominant, all fluxes undergo sign reversals. Diffusive thermodiffusive contributions are also found partially compensate each depending local gradients. Finally, evaluation peaking factor further demonstrates presence significantly mitigates core impurity accumulation.