Patent ID: 11967705
Assignee: SK ON CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. The anode active material for a lithium secondary battery of claim 1, wherein silicon included in the silicon-containing coating layer has a peak intensity ratio of 1.2 or less in a Raman spectrum defined by Equation 2 below:

Peak intensity ratio of Raman spectrum=I(515)/I(480)  [Equation 2]

wherein, in Equation 2, I(515) is a peak intensity of silicon included in the silicon-containing coating layer in a region having a wavenumber of 515 cm−1 in the Raman spectrum, and I(480) is a peak intensity of silicon included in the silicon-containing coating layer in a region having a wavenumber of 480 cm−1 in the Raman spectrum.