High-performance sphere-like porous ternary positive electrode precursor material and solid-phase preparation method thereof

The invention discloses a high-performance sphere-like porous ternary positive electrode precursor material and a solid-phase preparation method thereof. The chemical formula of the high-performance sphere-like porous ternary positive electrode precursor material is NixCoyM1-x-yOalphaHbeta, M=Mn, Al, Ti, Cr or Ru. The preparation method comprises the following steps: 1, uniformly mixing a nickel source, a cobalt source, an M source and an additive A, sintering in an atmosphere, mixing again after cooling, continuously sintering and carrying out crushing and grinding after cooling, wherein theM source comprises a manganese source, an aluminum source, a titanium source, a chromium source or a ruthenium source, and 2, adding an additive B, carrying out spray drying by adopting a centrifugalspray dryer or a pressure spray dryer, and sieving the dried powder to obtain a target precursor material NixCoyM1-x-yOalphaHbeta. The solid-phase sintering method disclosed by the invention is simplein process, higher in shap