| abstract |
The present invention discloses a lead tab having improved insulation, a method of manufacturing the same, and an electrochemical device including the same. Lead tab according to the present invention, the metal lead on the plane; An insulation coating layer formed on one or both surfaces of the metal lead; And a polyolefin-based sealant film layer formed on an upper surface of the insulation coating layer. According to the present invention, when the lead tab and the battery case are adhered by thermal fusion, even if the sealant film layer and the polymer resin layer are destroyed by heat, the insulating properties of both are maintained, and in particular, a large-capacity electrochemical device is used. Therefore, since a large amount of current is applied to the lead tab, even if the temperature of the lead tab rises, the insulating characteristics of the battery chemical element can be more stably ensured, and thus, the durability of the electrochemical element can be improved. |