HIGH BULK ENERGY DENSITY CATHODE MATERIAL FOR LITHIUM ION BATTERIES Russian patent published in 2022 - IPC H01M4/131 H01M10/525 

FIELD: electrical industry.

SUBSTANCE: invention relates to the electrical industry and can be used to produce a positive electrode (cathode) material based on layered transition metal oxides for lithium-ion batteries. The active cathode material for lithium-ion batteries is a compound of the formula Li_aNi_xMn_yCo_zA_vO₂, where 1.0≤a≤1.1, 0.3≤x≤0.85, 0≤у≤0.3, 0≤z≤0.3, A - alloying additive (Al, Mg, Zr, W, Ti, Cr, V, etc. or their combination) , v≤0.1, x+y+z+v=1, characterized by high values ​​of volumetric energy density, which is achieved due to the formation of separate non-agglomerated with each other with well-coordinated ribs and tops of coarse-grained particles that can be placed most compactly without deformation.

EFFECT: improving the operational characteristics of the cathode active material, namely, increasing the tapping density while maintaining high specific capacitance values ​​at various charge/discharge rates, and reducing the degradation rate of the cathode material capacity while maintaining high specific capacitance values ​​at various discharge rates.

9 cl, 12 dwg, 1 tbl, 6 ex