Patent ID: 11929497
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A negative electrode active material particle comprising:
a silicon-based compound comprising SiOx, wherein 0.5<x<1.3;
an amorphous carbon layer disposed on the silicon-based compound;
a graphene layer disposed on the amorphous carbon layer; and
at least one cavity present on at least a portion of a surface of the amorphous carbon layer and positioned between the amorphous carbon layer and the graphene layer,
wherein the graphene layer has a thickness of 0.5 nm to 200 nm,
wherein the silicon-based compound has an average particle diameter (D50) in a range of 5 μm to 20 μm, and
wherein an outer surface of the graphene layer is spherical.