Patent ID: 11876229
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. A method for manufacturing a negative electrode, comprising:
forming a negative electrode active material layer comprising a silicon-based active material and a conductive material and containing no binder polymer onto at least one surface of a current collector;
coating a composition for a coating layer comprising a coating layer polymer and a solvent on a surface of the negative electrode active material layer and at least a part of inside of pores of the negative electrode active material layer; and
drying the coated composition for a coating layer at 140-190° C. to form a coating layer in which the coating layer polymer forms a chemical bond with silicon (Si) of the silicon-based active material,
wherein a content of the coating layer polymer is 0.3-2 parts by weight based on 100 parts by weight of the negative electrode active material layer, and
the coating layer polymer comprises a mixture of polyacrylic acid with polyvinyl alcohol.