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This paper studies high specific capacity , large surface area , good cycle performance , simple process and low cost lithium-ion battery cathode material lithium titanate , analyzing physical and chemical properties of the material and electrochemical properties for the purpose of first use within the gel synthetic spherical titania target product , and examine the synthesis process affecting the formation of spherical titania variety of factors , and then prepared using high temperature solid spherical lithium titanate . First, with TiCl 4 for the material , hexamethylene tetramine as the curing agent , urea as precipitation agent , and a liquid paraffin as a dispersant having a spherical morphology prepared titania precursor , the use of SEM SEM can be seen that the inner gel of the material prepared in the particle size of between 1 ~ 6μm , the average particle diameter of about 3μm , ??relatively smooth surface of a sphere , a good fluidity , without heat treatment after deformation . Prepared using the spherical titanium dioxide and lithium carbonate as a raw material prepared by mixing spherical having a spinel structure lithium titanate (Li 4 Ti 5 O 12 < / sub>) powder. In this process , based on the spherical titania in the synthesis process of adding triblock copolymer F127, better electrochemical properties of the prepared mesoporous spherical lithium titanate . The specific surface area of ??this sample was 169.678 m 2 / g, an average pore diameter of 10.300 nm, pore volume of 0.437 cm 3 / g. XRD, SEM and electrochemical performance testing and other methods showed that the synthesis of Li 4 Ti 5 O 12 nano- materials are primary particles ( crystals grain ) consisting of spherical secondary particles ( particles) , and has a large surface area . This surface will have a spherical mesoporous pore structure lithium titanate as the cathode material, lithium (Li) sheet as the anode material consisting of the lithium ion battery has a stable discharge voltage plateau and excellent cycle performance. 1.0 ~ 2.5 V between the charge and discharge, the initial discharge capacity of 173.8 mAh / g, after 30 cycles , the discharge capacity is still 170.2 mAh / g. Illustrates this approach greatly improves the electrochemical performance of lithium titanate .
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