The spinel lithium titanate (hereinafter referred to as "lithium titanate"), the cathode material of lithium ion batteries, is a product independently developed by the central team and has independent intellectual property rights. This product adopts the wet activation in situ hydrolysis coating technology, which overcomes the shortcomings of the traditional sol gel method and high temperature solid state method in preparing lithium titanate particles with large size, serious agglomeration, and poor battery charging and discharging performance at high rates.