A thermally responsive membrane separator, suitable for use in non-aqueous electrolytes, was constructed by grafting a UCST polymer, poly(sulfobetaine), onto graphene oxide sheets. When heated from 20 to 80 °C, it decreased the specific storage capacity of the electrode for Li by >50% reversibly, compared to 30% increase without polymer modification.
Shen, J., Martin, E. J., Wu, Y. Y., Kung, M. C., Hayner, C. M., Shull, K. R., & Kung, H. H. (2014). Upper-critical solution temperature (UCST) polymer functionalized graphene oxide as thermally responsive ion permeable membrane for energy storage devices. Journal of Materials Chemistry A, 2, 18204-18207. https://doi.org/10.1039/C4TA04852K