Chemical diffusion behaviors of lithium-ion in the LiV3O8 prepared by wet method reaction

LiV3O8 as a cathode material for lithium ion batteries was synthesized by solution reaction and low temperature calcinations technique with V2O5 - nH(2)O hydro-gels and Li2CO3 as raw materials. The precursor and product were characterized by DTA-TG, XRD measurements. Electrochemical behavior of the LiV3O8 as a cathode material for rechargeable lithium-ion batteries was studied by galvanostatic charge-discharge measurement. The experiment showed that the active material LiV3O8 was of higher charge-discharge capacity and excellent cycling behavior. Lithium-ion chemical diffusion coefficient ( DLi +) of the LiV3O8 electrode was determined by the potentiostatic intermittent titration technique (PITT). DLi + values obtained were in the range of 10(-8) similar to 10(-10) CM2 . s(-1), depending on x-values in Li1 +, xV3O8. The activation energy of lithium-ion diffusion (E-a) obtained was in the range of 25 similar to 42 kJ . mol(-1)(x = 0.18 similar to 2.5).