1IntroductionIn recent years consistent attention has been devoted to lithium ion batteries due to its good performance such as high open-circuit voltage, energy density and good environmental control. The rate capability of these batteries, however, is not satisfying. Lithium trivanadate, Li1+xV3O8, is a promising cathode material for lithium ion battery because of its higher rate capability and cycleability[1,2]. Many researchers have attempted further improvement of its electrochemical performance. With a view to fasten diffusion of lithium ions during discharge and charge process, the interlayer gap was expanded by substituting part of Li+ ions at octahedral sites with other cations having larger ionic radii[3,4]. These trials, however, did not bring out much favorable results compared with the original Li1 + xV3O8. In the present paper, the mixed conductivity, the structural and electrochemical characterization of LiV3O8 containing insulating second phase (α-Al2O3) were reported intensively.