Patent ID: 11916233
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A positive electrode active material for a secondary battery, comprising:
a lithium composite transition metal oxide comprising nickel (Ni), wherein the lithium composite transition metal oxide satisfies Equation 1 and Equation 2:

80 nm≤crystallite sizeFWHM≤150 nm  [Equation 1]

Δsize(|crystallite sizeIB−crystallite sizeFWHM|)≤20  [Equation 2]

wherein, in Equation 1 and Equation 2, crystallite sizeFWHM is a crystallite size obtained by calculating from X-ray diffraction (XRD) data using a full width at half maximum (FWHM) method, and crystallite sizeIB is a crystallite size obtained by calculating from XRD data using an integral breadth (IB) method.