An ionic liquid- and PEO-based ternary polymer electrolyte for lithium metal batteries: an advanced processing solvent-free approach for solid electrolyte processing.

ABSTRACT: A processing solvent-free manufacturing process for cross-linked ternary solid polymer electrolytes (TSPEs) is presented. Ternary electrolytes (PEODA, Pyr₁₄TFSI, LiTFSI) with high ionic conductivities of >1 mS cm^-1 are obtained. It is shown that an increased LiTFSI content in the formulation (10 wt% to 30 wt%) decreases the risk of short-circuits by HSAL significantly. The practical areal capacity increases by more than a factor of 20 from 0.42 mA h cm^-2 to 8.80 mA h cm^-2 before a short-circuit occurs. With increasing Pyr₁₄TFSI content, the temperature dependency of the ionic conductivity changes from Vogel-Fulcher-Tammann to Arrhenius behavior, leading to activation energies for the ion conduction of 0.23 eV. In addition, high Coulomb

SUBMITTER: Herbers L 

PROVIDER: S-EPMC10265719 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature