Self-regenerative electrolytes with intrinsic redox activity for energy storage devices
AssigneeThe American University in Cairo
InventorsNageh K. Allam, Abdelrahman A. M. Ismail
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Abstract
A hydrogel composition and its use as an electrolyte in energy storage devices is described. The hydrogel can include a polyvinyl alcohol (PVA) matrix and an aqueous solution of lithium bromide (LiBr). The hydrogel electrolyte has high water retention ability, anti-freezing properties, is non-flammable, and has redox activity with a stable self-discharge rate.
Claims19
A hydrogel comprising a polymeric matrix and a solution comprising water and a salt, wherein the polymeric matrix comprises polyvinyl alcohol (PVA) and wherein the salt comprises lithium bromide (LiBr).
A method of preparing a hydrogel electrolyte, wherein the method comprises:
- (i) preparing a first solution, wherein the first solution comprises an aqueous solution of polyvinyl alcohol (PVA);
- (ii) preparing a second solution, wherein the second solution comprises an aqueous solution of lithium bromide (LiBr);
- and
- (iii) adding a volume of the first solution to a volume of the second solution to provide a mixture and stirring the mixture for a period of time to provide a clear composition, thereby providing the hydrogel electrolyte.
Dependencies are inferred from the claim text.