The MoS₂ is deployed in various fields of applications including rechargeable battery, hydrogen storage, solar cell, catalysis and electronic transistors. The ionic diffusivity and interfacial exchange current density, are important parameters, play a vital role for the optimization of device performances which are not systematically studied for this material. Additive-free dense film of MoS₂ has been fabricated by electrodeposition technique and annealed at different temperatures in argon and sulfur atmosphere. The as-deposited and heat treated film is characterized by XRD, SEM, SIMS and XPS. The measurements of interfacial charge transfer kinetics and lithium ion diffusivity is performed in the half cell configuration (Li/separator/Li_xMoS₂ film) as a function of lithium content. The exchange current density at the electrode/electrolyte interface is found to be barely vary with the degree of lithiation (~0.09-0.08mA/cm²) at (x=0.01-0.25). The ionic diffusivity of the phase is found to be ~5x10^-12cm²s^-1 and ~5x10^-11cm²s^-1, respectively, and does not vary much with the degree of lithiation. From the obtained results it appears that the charge transfer resistance during electrochemical measurement is limited by the interfacial kinetics over the measured state-of-charge. Down size particle with higher surface area is required to be used as a battery electrode of the material for real life application.