Separator for lithium secondary battery and lithium secondary battery including the same

摘要

The present disclosure relates to a separator and a lithium secondary battery including the same. The separator comprises a polyethylene-based powder or a polypropylene-based powder provided on or in the base film, wherein the polyethylene-based powder or the polypropylene-based powder is different from the base film.

主权项

1. A separator for a secondary battery comprising:
a base film consisting of polyethylene or polypropylene, the base film comprising a plurality of pores therein; and material applied onto the base film, wherein at least part of the material is inserted into at least part of the plurality of pores, wherein the material consists of polyethylene when the base film is polypropylene, wherein the material consists of polypropylene when the base film is polyethylene, and wherein the base film has a surface area and the material is provided on about 10% to about 30% of the surface area of the base film.