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US 11,502,372 B2Granted
Porous film, separator comprising same, and electrochemical cell
AssigneeSamsung SDI Co., Ltd.
InventorsSunghee Ahn, Hana Ra, Suhak Bae, Minjeong Lee
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Abstract
The present invention relates to a porous film including polyethylene and pore-forming particles, wherein the porous film has a structure including lamella and fibril, and the average size of pores located inside the porous film is larger than the average size of pores located on the surface of the porous film; a separator including the same; and an electrochemical cell.
Claims20
A porous film comprising
- polyethylene and pore-forming particles, wherein the porous film has a structure comprising lamella and fibril and an average size of pores located inside the porous film is larger than an average size of pores located on the surface of the porous film.
Dependencies are inferred from the claim text.