Negative electrode active material, method of preparing the same, negative electrode and lithium secondary battery employing the electrode including the negative electrode active material

摘要

In an aspect, a negative electrode active material, a method of preparing the same, and a lithium secondary battery having the negative electrode including the negative electrode active material is provided. The negative electrode active material may include amorphous silicon oxide, crystalline silicon, carbon, metal silicide, spherical particles and whiskers.

主权项

1. A negative electrode active material comprising amorphous silicon oxide, crystalline silicon, carbon, and metal silicide components, wherein the metal silicide component and one or more of silicon oxide, crystalline silicon and carbon is included in spherical particles and whiskers, wherein the negative electrode active material is made by a process comprising:
mixing amorphous silicon oxide, carbon precursor, silicon, metal silicide, and a first solvent together to obtain a negative electrode active material composition; and spray-drying the negative electrode active material composition to provide the negative electrode active material.