NEGATIVE ACTIVE MATERIAL, METHOD OF PREPARING THE NEGATIVE ACTIVE MATERIAL, ELECTRODE INCLUDING THE NEGATIVE ACTIVE MATERIAL, AND LITHIUM BATTERY INCLUDING THE ELECTRODE

摘要

A negative active material including: a composite including a matrix comprising silicon oxide, silicon carbide, and carbon and silicon particles dispersed in the matrix; and a carbon coating film formed on a surface of the composite, wherein an intensity ratio of a SiC peak to a Si peak in an X-ray diffraction spectrum is 1 or more, a method of preparing the negative active material, a negative electrode including the negative active material, and a lithium battery including the electrode.