The design of a multifunctional separator regulating the lithium ion flux for advanced lithium-ion batteries.

ABSTRACT: Herein, we design a controllable approach for preparing multifunctional polybenzimidazole porous membranes with superior fire-resistance, excellent thermo-stability, and high wettability. Specifically, the recyclable imidazole is firstly utilized as the eco-friendly template for micropores formation, which is an interesting finding and has tremendous potential for low-cost industrial production. The unique backbone structure of the as-prepared polybenzimidazole porous membrane endows the separator with superb thermal dimensional stability at 300 °C. Most significantly, the inherent flame retardancy of polybenzimidazole can ensure the high security of lithium-ion batteries, and the existence of polar groups of imidazole can regulate the Li⁺ flux and improve the ionic conductivity

SUBMITTER: Sun G 

PROVIDER: S-EPMC9076257 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature