Composite Battery Separator Using Polymer Mesh and Gel Electrolyte

The patent uses a composite structure combining a polymer mesh (providing mechanical stability) with a gel containing ionic liquid (providing ionic conductivity). The gel is impregnated into the pores of the polymer mesh, creating a composite separator that achieves both high ionic conductivity and mechanical stability simultaneously.

The patent uses a gel electrolyte in the form of a thin film impregnated into the polymer mesh structure. This gel film contains the ionic liquid within its matrix, preventing leakage while maintaining ionic conductivity. The gel acts as a self-contained electrolyte reservoir that does not require additional liquid electrolyte addition during assembly.

The patent employs a porous polymer mesh structure that provides mechanical strength through its three-dimensional framework. The gel electrolyte is impregnated into these pores, allowing the separator to be made thin for reduced impedance while the mesh framework maintains mechanical integrity. The porous structure enables thin film formation without sacrificing strength.

The patent transitions from a two-dimensional flat membrane to a three-dimensional porous mesh structure impregnated with gel. This dimensional change allows the separator to maintain mechanical robustness for ease of handling while the gel-filled pores provide efficient ionic conduction pathways, reducing impedance despite the thicker effective structure.