Abstract
Li 1+ x V 3 O 8 is a very promising cathode material for lithium secondary batteries. A novel technique has been developed to prepare Li 1+ x V 3 O 8 . The V 2 O 5 sol is prepared via a “quencher” method by NH 4 VO 3 as the raw material. Then it is mixed with LiOH solution. The spherical precursor is obtained by a spray drying method. Spherical Li 1+ x V 3 O 8 powders are synthesized by sintering the spherical precursor. DTA/TGA is employed to analyze the precursor. The influences of the preparing conditions including initial ratio of Li/V, sintering time and temperature on crystal structure and electrochemical performance have been investigated. As a result, the Li 1+ x V 3 O 8 particles obtained by sintering at 350 °C for 24 h are fine, spherical, narrowly distributed, well crystallized and having excellent electrochemical properties.
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