| abstract |
Embodiments of the present invention relate to a seal tape and a secondary battery. The seal tape of the present invention includes a polar functional group-containing monomer as a polymerization unit, and includes a cured product of a pressure-sensitive adhesive composition including a polymer. By including the layer, it is expanded in contact with the electrolyte solution, thereby providing a seal tape for attaching the electrode assembly that can be detached from the electrode assembly, thereby repeating the charging and discharging of the secondary battery. It is possible to induce isotropic volume expansion and contraction of the electrode assembly and to improve the disconnection phenomenon in which the electrode is broken. |