Sealing material for lithium secondary battery, manufacturing method thereof, and pouch cell for lithium secondary battery containing the same
AssigneeSK On Co., Ltd.
InventorsDong Heum PARK, Ju Young CHOI, Min Kyung BAEK, Kyung Suk SUK, Ik Suk LEE, Jae Woong CHO
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Abstract
A sealing material for a lithium secondary battery of the present disclosure includes an internal resin layer including a polymer resin; a metal thin film layer provided on an upper surface of the internal resin layer; an external resin layer provided on an upper surface of the metal thin film layer; a film layer provided on an upper surface of the external resin layer; and a water-repellent treatment layer provided on a lower surface of the internal resin layer.
Claims12
A sealing material for a lithium secondary battery, comprising:
- an internal resin layer including a polymer resin;
- a metal thin film layer provided on an upper surface of the internal resin layer;
- an external resin layer provided on an upper surface of the metal thin film layer;
- a film layer provided on an upper surface of the external resin layer;
- and
- a water-repellent treatment layer provided on a lower surface of the internal resin layer.
A method for manufacturing a sealing material for a lithium secondary battery, comprising:
- stacking an internal resin layer including a polymer resin, a metal thin film layer provided on an upper surface of the internal resin layer, an external resin layer provided on an upper surface of the metal thin film layer, and a film layer provided on an upper surface of the external resin layer;
- and
- forming a water-repellent treatment layer provided on a lower surface of the internal resin layer,
- wherein the water-repellent treatment layer is formed by chemical treatment or physical treatment.
Dependencies are inferred from the claim text.