BATTERY CASE FOR SECONDARY BATTERY AND METHOD FOR MANUFACTURING GAS DISCHARGE PART

A battery case for a secondary battery according to an embodiment of the present invention for achieving the object includes: a cup part provided with an accommodation space configured to accommodate an electrode assembly formed by stacking an electrode and a separator; a sealing part extending outward from the cup part; and a gas discharge part which is attached from the inside to a hole formed by perforating at least one of the cup part or the sealing part and through which a gas passes. The gas discharge part includes: a gas discharge layer through which the gas passes; and an outer functional layer which is formed on an outer surface of the gas discharge layer and has hydrophobicity.