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

Claim 0:
1. A positive electrode active material comprising:
a lithium transition metal oxide doped with doping element M2,
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
wherein the lithium transition metal oxide contains nickel in an amount of 60 mol % or more based on a total number of moles of transition metals excluding lithium,
wherein the lithium transition metal oxide has a single particle form and comprises a center portion having a layered structure and a surface portion having a rock-salt structure, and
the doping element M2 is included in an amount of 3,580 ppm to 7,620 ppm based on a total weight of the positive electrode active material.