USPTO Patent Granted for Polymer Gel Electrolyte

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 24th, 2026

Detected March 25th, 2026

Summary

The USPTO has granted a patent (US12586818B2) to RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY for a dextrin-DADMAC based double network polymer gel electrolyte. The patent covers the electrolyte composition and a method for its preparation, intended for use in energy storage devices.

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What changed

The United States Patent and Trademark Office (USPTO) has granted patent US12586818B2 for a novel dextrin-DADMAC based double network polymer gel electrolyte. The patent, assigned to RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY, details the composition of the gel electrolyte, which includes a first polymer network crosslinked with DADMAC monomers and a second polymer network of dextrin, forming an entangled double network. This structure supports a liquid electrolyte and is designed to improve mechanical properties through ion exchange reactions with a salt, potentially enhancing performance in energy storage devices.

This patent grant represents a new intellectual property asset for the assignee and does not impose any new regulatory obligations on external entities. Manufacturers in the battery and energy storage sectors may find the disclosed technology relevant for future product development or licensing opportunities. The filing date for this patent was November 30, 2022, and the grant date is March 24, 2026.

Source document (simplified)

← USPTO Patent Grants

Dextrin-DADMAC based double network polymer gel electrolyte, method for preparing the same and energy storage device including the same

Grant US12586818B2 Kind: B2 Mar 24, 2026

Assignee

RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

Inventors

Jungwoo Hong, Hoseok Park, Jeong Hee Park, Harpalsinh Hardevsinh Rana

Abstract

A dextrin-DADMAC based double network polymer gel electrolyte is disclosed. The gel electrolyte includes: a first polymer network having a network structure in which linear main chains including diallyldimethylammonium chloride (DADMAC) monomers are crosslinked with each other via N,N-methylenebisacrylamide; a second polymer network including a dextrin polymer chain, and entangled with the first polymer network to form a double network composed of the first and second polymer networks; and a liquid electrolyte supported inside the double network composed of the first and second polymer networks. In addition, mechanical properties of the polymer gel electrolyte are improved via an ion exchange reaction between the polymer gel electrolyte and a salt.