Porous organic polymer-based conductor and composition for solid electrolytes containing the same

Porous organic polymer conductor with sulfonic acid protons substituted by zinc ions

This technology is a solid electrolyte material that maximizes zinc ion conductivity by introducing sulfonic acid groups (-SO3H) into the pores of a porous organic polymer (POP) and substituting the protons (H+) of the sulfonic acid groups with zinc ions (Zn2+) through an ion-exchange process.

While zinc batteries offer advantages over lithium batteries in terms of raw material availability and safety, they have faced challenges due to the low conductivity of divalent zinc ions in electrolytes and a lack of research into supporting solid electrolyte materials.

By utilizing multi-post-synthetic functionalization to introduce high-density sulfonic acid groups into the porous organic polymer structure and reacting them with an aqueous zinc salt solution for ion exchange, this technology produces a high-performance zinc ion conductor (a secondary porous organic polymer). This can be applied to secondary battery electrolytes, contributing to process simplification and cost reduction.

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Key Features:

• A conductor comprising a secondary porous organic polymer with a defined chemical formula as a repeating unit, in which the protons of the sulfonic acid groups are substituted with zinc ions.
• A configuration that introduces sulfonic acid groups into the pores of a porous organic polymer and substitutes protons with zinc ions through an ion-exchange process.
• A porous organic polymer that enhances zinc ion conductivity through sulfonic acid groups substituted with zinc ions.
• A conductor configured for application as a solid electrolyte in zinc batteries.

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