Patent ID: 11942628
Assignee: HANSOL CHEMICAL CO.,LTD
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A negative electrode active material for lithium secondary batteries, the negative electrode active material comprising:
a porous core in which scaly nano-silicon fragments are connected in an entangled manner; and
a shell layer covering the core,
wherein the shell layer includes a carbon-based material and silicon,
wherein the carbon-based material is graphite and amorphous carbon,
wherein the graphite is comprised of scaly graphite fragments, and
wherein the amorphous carbon is distributed between the scaly graphite fragments, and the scaly nano-silicon fragments are combined on upper and lower surfaces of the scaly graphite fragments in a regular or irregular shape.