A rheological behavior of various polyvinylidene difluoride binders for high capacity LiNi0.6Mn0.2Co0.2O2
2016
Various polyvinylidene difluorides (PVDF) as polymeric binding agent in lithium-ion battery were rheologically evaluated on high capacity and excess lithium-LiNi0.6Mn0.2Co0.2O2 (Ni-rich NMC). We found that the suspension polymerized PVDF binder is more stable upon gelation for long duration while other high molecular weight PVDF binders (MW > 900,000) show irreversible rheological transformation that can dramatically compromise the coating step during lithium-ion battery electrode slurry preparation. POLYM. ENG. SCI., 2016. © 2016 Society of Plastics Engineers
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