ACTIVE CATHODE MATERIAL BASED ON LAYERED OXIDES OF LITHIUM AND TRANSITION METALS FOR LITHIUM-ION BATTERIES, METHOD OF PRODUCING SAID MATERIAL AND ITS PRECURSOR COMPOUND Russian patent published in 2024 - IPC H01M10/525 H01M4/1391 

FIELD: electrical industry.

SUBSTANCE: invention relates to electrical engineering and can be used for production of material of positive electrode (cathode) based on layered oxides of lithium and transition metals with improved electrochemical properties for lithium-ion batteries. Active cathode material for lithium-ion batteries is a compound of general formula Li_a[Ni_xMn_yCo_z]_1-fCo_fA_vO₂, where 0.8≤a≤1.3, 0.3≤x≤1, 0≤y≤1, 0≤z≤1, 0.001≤f<1, 0≤v≤0.1, x+y+z=1, A is an alloying additive containing at least one element selected from the group: Al, Mg, Zr, W, Ti, Cr, V, Ca, Zn, Ga, Sr, Mo, Ru, In, Sc, and is characterized by radially oriented primary particles and gradient of concentrations of cobalt and nickel in agglomerates.

EFFECT: improved operational characteristics of the active cathode material, namely increase in charge/discharge cycles while maintaining high specific capacity due to formation of radially oriented primary particles and concentration gradient of Co and Ni in agglomerates.

16 cl, 9 dwg, 2 tbl, 13 ex