Quantifying the Evolution of Binder/Active Material Interface Fracture Properties from the As-Prepared State to Cycling Conditions.

ABSTRACT: The binder-active material interface failure has been a critical issue in rechargeable batteries, especially for high-performance materials with large (∼300%) volume changes. This interface is very complex and undergoes various changes over the course of fabrication to cycling in service. Here, PVdF/Si was chosen as a model interface, and the interface failure behavior is quantified in terms of critical energy release rate G _c. Further, the effect of electrolyte and the electrochemical cycling on G _c was quantified using an experimental method, which includes a Michelson interferometer-based optical setup coupled with a blister test in an electrochemical cell. The G _c of the as-prepared dry PVdF/Si interface is 0.55 ± 0.10 J m^-2

SUBMITTER: Pakhare AS 

PROVIDER: S-EPMC12606567 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature