In order to overcome the above defects of the prior art, a sodium ion cathode MATERIAL with narrow particle size distribution and regular shape is provided, and a preparation method of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC is provided. The sodium ion cathode material has the advantages of low specific surface area, high vibration density and good processing performance. A positive electrode material satisfying the following characteristics: 0.65≤α≤1.25, where α = (dv90-dv10)/dv50; dv90, dv10 and dv50 are the particle size distribution parameters of the positive electrode material respectively.
1≤β≤1.1, where β is the average value of the ratio of the long axis length to the short axis length of the positive electrode material within the size distribution range of dv50. The positive electrode material comprises a plurality of lamellar particles, and the consistency parameter γ of the orientation distribution of lamellar particles ranges from 0.73≤γ < 1, where, n is the number of flake particles selected for calculation on PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC magnetic anode material within the size distribution range of dv50, n≥10;
θi is the anti-clockwise Angle between the length direction of the selected i flake particle and the horizontal axis set by PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC field. δ is the rotation Angle of the horizontal axis set by rotation in the range [-π/2,π/2] so that γ is at its maximum relative to the set horizontal axis.
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