| abstract |
The invention provides a sealing tape and a secondary battery. The sealing tape for bonding an electrode assembly includes a pressure-sensitive adhesive layer comprising a cured product of a pressure-sensitive adhesive composition comprising, as a polymerized unit, a compound having a polar functional group. The polymer of the monomer, and the sealing tape expands to separate from the electrode assembly when in contact with the electrolyte solution, therefore, the isotropic volume expansion and contraction of the electrode assembly can be induced by repeated charging and discharging of the secondary battery, and can Prevents open circuit phenomenon where electrodes are disconnected. |