Loading patent…
AssigneeLG Chem, Ltd.
InventorsYe Hyeon Gu, Jin Hoo Jeong, Joo Kyoung Hwang, Ji Young Lee, Hyeon Mo Ryu, Kook Jin Heo, Kyung Gu Kim
Estimating the term…
A positive electrode active material including a lithium composite transition metal oxide which is in the form of a single particle or of a secondary particle in which at most 10 primary particles are aggregated, and which includes two or more selected from nickel, cobalt, and manganese, wherein the lithium composite transition metal oxide has a particle size distribution satisfying Expression 1: 0.04 < sk ewness mode value × 3 < 0.05 . ( 1 ) The skewness is a value calculated according to Expression 2: 3 × ( volume average particle diameter ( unit : μm ) value ) - ( D 50 ( unit : μm ) value ) standard deviation of lithium composite transition metal oxide particle diameter . ( 2 ) The mode value is a particle diameter value when the y value is maximum in a particle size distribution curve in which an x-axis is a particle diameter of the lithium composite transition metal oxide and a y-axis is a volume percentage.
A positive electrode active material comprising a lithium composite transition metal oxide, which is in the form of a single particle or in the form of a secondary particle in which at most 10 primary particles are aggregated, and which comprises two or more selected from nickel, cobalt, or manganese,
(canceled)
Dependencies are inferred from the claim text.