Pouch Type Secondary Battery

Abstract: A pouch-type secondary battery according to the present invention comprises: an electrode assembly; a pouch-type case including an accommodation portion for storing the electrode assembly and a sealing portion for sealing the accommodation portion; an electrode lead connected to the electrode assembly and protruding to the outside of the pouch-type case via the sealing portion; a lead film arranged between the electrode lead and the pouch-type case; and a gas guide portion arranged between the electrode lead and the lead film, wherein the gas guide portion comprises: a first layer that is in contact with the electrode lead; and a second layer arranged on the first layer, and the first layer includes a modified polyolefin-based resin.

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