Anode active material having high density and preparation method thereof

摘要

Provided is an anode active material including lithium metal oxide particles having an internal porosity ranging from 3% to 8% and an average particle diameter (D50) ranging from 5 μm to 12 μm. According to the present invention, since the high-density lithium metal oxide particles are included, the adhesion to an anode may be significantly improved even by using the same or smaller amount of a binder that is required during the preparation of an anode slurry, and high rate characteristics of a secondary battery may be improved by decreasing the average particle diameter of the lithium metal oxide particles.

主权项

1. An anode active material comprising lithium metal oxide particles,
wherein an internal porosity of the lithium metal oxide particles is in a range of 3% to 8% and an average particle diameter (D50) thereof is in a range of 5 μm to 12 μm, and wherein the lithium metal oxide is any one selected from the group consisting of Li4Ti5O12, LiTi2O4, Li2TiO3, Li2Ti3O7, and a mixture of two or more thereof.