Terminal film for power storage device, and power storage device using same

A power storage device terminal film for covering an outer peripheral surface of part of a metal terminal constituting a power storage device, the power storage device terminal film, comprising:

• a first resin layer that contains polypropylene and polyethylene;
• a second resin layer that contains polypropylene;
• and
• an intermediate layer that contains polypropylene and is provided between the first resin layer and the second resin layer, wherein
• the first resin layer has, as one surface of the terminal film, a first surface satisfying Formula (A1):
• 0.3
• ≤
• a
• ⁢
• 2
• /
• a
• ⁢
• 1
• ≤
• 6.2
• ,
• (
• A
• ⁢
• 1
• )
• where a1 represents an absorption intensity at a wave number of 720 cm−1 measured by attenuated total reflection infrared spectroscopy, and a2 represents an absorption intensity at a wave number of 841 cm−1 measured by attenuated total reflection infrared spectroscopy.