Patent ID: 11942636
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC H

Claim 0:
1. A positive electrode material, comprising a substrate, wherein the substrate comprises secondary particles containing primary particles, a molecular formula of the substrate is LixNiyCozMkMepOrAm, 0.95≤x≤1.05, 0.50≤y≤0.98, 0≤z≤0.3, 0≤k≤0.4, 0≤p≤0.05, 1≤r≤2, 0≤m≤2, m+r≤2, M is Mn and/or Al, Me is selected from one or more of Zr, Zn, Cu, Cr, Mg, Fe, V, Ti, Sr, Sb, Y, W, Nb, or Al, and A is selected from one or more of F, Cl, or Br;
a surface of the substrate is coated with an oxide coating layer, and the oxide coating layer comprises a coating element, and the coating element is selected from one or more of Al, Ba, Zn, Ti, Zr, Mg, W, Y, Si, Sn, B, Co, or P;
a powder resistivity p of the positive electrode material under a 12 MPa pressure is 10 Ω*cm-5,000 Ω*cm, more specifically 10 Ω*cm-2,000 Ω*cm;
a content Mv of the coating element per unit volume of the positive electrode material is 400 μg/cm3 to 15,000 μg/cm3; and
the powder resistivity ρ and the content Mv of the coating element satisfy: ρ/Mv≤1 Ω*cm4/μg.