Large-dimension, flexible, ultrathin high-conductivity polymer-based composite solid-state electrolyte membrane

Abstract

Fabricating a composite solid-state electrolyte (SSE) membrane by infiltrating a porous polymer substrate with a mixture which comprises: (i) polymer precursor, (ii) ceramic nanoparticles with diameters that range from 10 to 2000 nm, (iii) plasticizer and (iv) lithium salt. Curing the mixture yields a solid-state electrolyte which is formed within pores of the substrate. A continuous roll-to-roll system for manufacturing of large-dimension, flexible, ultrathin, high ionic conductivity (SSE) membrane advances a porous polymer substrate through a coating module, multifunctional module for post-treatment curing and calendar unit. The SSE membrane is used in all solid-state lithium-ion electrochemical pouch cells. The SSE membrane exhibits high ionic conductivity over wide temperature range, especially high value in low temperature (−40° C.).

Dependencies are inferred from the claim text.