Patent ID: 11923540
Assignee: SK ON CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A negative electrode active material comprising: negative electrode active material particles including a silicon oxide represented by SiOx, where 0<x≤2, and at least one lithium silicate selected from Li2SiO3, Li2Si2O5, and Li4SiO4 in at least a part of the silicon oxide,
wherein the negative electrode active material has a content of a nitrogen element according to X-ray photoelectron spectroscopy (XPS) of 1.45 atom % or less, and
wherein the negative electrode active material particles include 70 to 85 wt % of the lithium silicate with respect to a total weight.