The invention discloses a preparation method for improving the potential of a
lithium ion battery positive
electrode material LiCoO2. The method comprises the following steps: mixing cobaltosic
oxide with a
lithium salt, adding an additive T1, preprocessing above
mixed materials, carrying out high-temperature primary
sintering on the above obtained preprocessed uniformly-
mixed materials, carrying out surface treatment on the obtained sintered material, carrying out secondary mixing after the treatment ends, preprocessing the secondary mixed material, carrying out low-temperature secondary
sintering, and carrying out surface treatment to obtain a product.
Lithium cobaltate produced through the preparation method for improving the potential of the
lithium ion battery positive
electrode material has original properties, and also realize 4.4 v
charge and discharge; the material is processed to form a final battery undergoing test, the test current rate is 0.2 C, the
discharge voltage range is 3.0-4.35 V, the specific capacity of the tested material is greater than 160 mAh / g, and the capacity
retention ratio is 99.5% or above after
cycling 1 C charge / 1 C
discharge 10 times; and the preparation method has good economic and
social benefits, and is suitable for being promoted and used.