Investigating the strength of heat-sealed cast polypropylene film for lithium-ion pouch cells considering thermo-mechanical coupling effects

• Published in: Composite structures Vol. 322; p. 117368
• Main Authors: Han, L., Chai, L.D., Wei, Y.C., Zhang, W.F., Wang, M., Zhang, W.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15.10.2023
• Subjects: Cohesive zone model; Heat-sealed cast polypropylene film; Pouch cell; Strength degradation; Thermo-mechanical coupling; Heat-sealed cast polypropylene film; Cohesive zone model; Pouch cell; Thermo-mechanical coupling; Strength degradation

This study investigates the failure mechanism of the heat-sealed cast polypropylene (CPP) film of lithium-ion pouch cells (LIPC) under varying loads and temperatures. Firstly, an in-situ tensile test was conducted on strips cut from the sealing edge adhesive area (SEAA) to measure the maximum streng...