Patent ID: 11901540
Assignee: UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A method of preparing a composite anode active material, the method comprising:
spray-drying a solution including a carbon source and a pore-forming agent to obtain a composite structure;
etching the composite structure to form a porous composite structure;
providing a non-carbonaceous material to the porous composite structure to form a first coating layer on a surface of the porous composite structure; and
providing a carbon precursor to the first coating layer to form a second coating layer comprising a carbonaceous material on the first coating layer arranged on the surface of the porous composite,
wherein the pore-forming agent is a silicon oxide, and
wherein the porous composite structure has a plurality of pores, and the pores have an average pore diameter of about 200 nm to about 300 nm.