Ternary positive electrode material with low residual alkali content and preparation method and application of ternary positive electrode material

The invention belongs to the technical field of battery positive electrode materials, and particularly relates to a low-residual alkali ternary positive electrode material and a preparation method and application thereof. The preparation method of the low-residual alkali ternary positive electrode material provided by the invention comprises the following steps: 1) mixing a ternary precursor, a metal additive and a lithium source, and sintering to obtain a positive electrode material A; (2) washing the positive electrode material A obtained in the step (1) by using a cobalt source solution, filtering a solid, and sintering to obtain a positive electrode material B; and 3) mixing the positive electrode material B obtained in the step 2) with a fluorine-containing coating agent, and sintering to obtain the low-residual alkali ternary positive electrode material. According to the preparation method disclosed by the invention, the residual alkali content of the ternary positive electrode material is reduced, and