High-nickel low-cobalt ternary positive electrode material with low internal resistance and preparation method of high-nickel low-cobalt ternary positive electrode material

The invention provides a high-nickel low-cobalt ternary positive electrode material with low internal resistance and a preparation method thereof. The high-nickel low-cobalt ternary positive electrode material with low internal resistance is prepared from a ternary precursor, a lithium source, a tungsten-containing main additive, an A element-containing auxiliary additive and a coating agent. Through co-doping of the tungsten-containing main additive and the A element-containing auxiliary additive, the internal resistance of the high-nickel low-cobalt ternary positive electrode material can be reduced, the capacity and rate capability of the material can be improved, the cycle performance of the material can be improved, and the side reaction between the surface of the material and an electrolyte can be effectively inhibited by coating the surface of the matrix with the coating agent, so that the service life of the material is prolonged. And meanwhile, the preparation method is simple and is suitable for lar