Patent ID: 11876210
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC H

Claim 8:
9. A method of preparing a positive electrode active material, comprising:
mixing a transition metal precursor containing nickel in an amount of 60 mol % or more based on a total number of moles of transition metals, a lithium raw material, and a doping element M2-containing raw material, wherein M2 includes at least one of aluminum (Al), titanium (Ti), magnesium (Mg), zirconium (Zr), tungsten (W), yttrium (Y), strontium (Sr), fluorine (F), silicon (Si), sodium (Na), copper (Cu), iron (Fe), calcium (Ca), sulfur (S), or boron (B), and
sintering the mixture at 800° C. to 1,000° C. to prepare a lithium transition metal oxide having a single particle form,
wherein the doping element M2-containing raw material is mixed such that an amount of the doping element M2 is in a range of 3,580 ppm to 7,620 ppm based on a total weight of the positive electrode active material.