30-05-2023 дата публикации
Номер: CN116190595A
Принадлежит:
The invention relates to a high-nickel positive electrode material and a preparation method thereof, and a lithium ion battery, the high-nickel positive electrode material comprises: a base material, the chemical general formula of which is LiaNixCoyMzNbO2, a is more than or equal to 0.95 and less than or equal to 1.1, and xlt is more than or equal to 0.6; 1, 0lt; yt; Yt; 0 1t, 0.4, 0 1t; zlt, zlt; x + y + z = 1, and blt is greater than or equal to 0; m is Mn and/or Al, and N comprises at least one of Zr, W, Mg, Ti, Ce, Sr, V, Mo, Y, Nb, B, S, Ba and Ta; the coating layer is at least partially located on the surface of the base material, the coating layer comprises a compound of an oxide of transition metal and a carbon material, and the transition metal comprises at least one of Co, Ni and Zn; wherein at least part of the high-nickel positive electrode material particles are connected through the carbon material in the coating layer to form secondary particles. According to the high-nickel ...
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