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US 12,749,681 B2Granted
Lithium battery cathode active material having oriented structure, and preparation method therefor
AssigneePosco Future M Co., Ltd.
InventorsSeung Un Choi, Jae Han Kim, Deuk Su Kim, Hye Jeong Park, Jeong Han Kim
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Abstract
A lithium battery cathode active material and a preparation method therefor are described. The material has an orientation formed by firing a density gradient precursor in which the density gradually changes from the inside of second particles, formed as an aggregate of primary particles, to the outside of the particles. The lithium battery cathode active material has an oriented structure, and thus can have a long lifespan and high-capacity characteristics.
Claims8
A cathode active material comprising:
- a lithium-nickel composite oxide,
- wherein the cathode active material comprises:
- a secondary particle formed from an aggregate of primary particles and a particle shape controller that is xylitol, wherein the secondary particles have an orientation formed from a density gradient that is diffused from an inside to an outside by the particle shape controller.
Dependencies are inferred from the claim text.