Gel polymer electrolyte compositions and electrochemical cells including the same
AssigneeThe Johns Hopkins University
InventorsKonstantinos Gerasopoulos, Adam W. Freeman, Christopher M. Hoffman, Jr.
Life of this patent
Estimating the term…
Abstract
Gel polymer electrolyte compositions including a cross-linked three-dimensional polymer network and an electrolyte composition comprising an electrolyte and water are provided. The gel polymer electrolyte compositions can be included in an aqueous electrochemical cell, in which a gel polymer electrolyte can be positioned between an anode and a cathode. Methods of forming a gel polymer electrolyte in the form of a film are also provided. Methods of forming an aqueous electrochemical cell including a gel polymer electrolyte are also provided.
Claims15
A gel polymer electrolyte (GPE) composition, comprising:
- (i) a cross-linked three-dimensional polymer network comprising the reaction product of at least (i) a first monomer including at least three thiol functional groups;
- (ii) a second monomer including at least two vinyl functional groups, at least one alkyne functional group, or a combination thereof, and (iii) a third monomer including at least two thiol functional groups, wherein the first monomer and the third monomer are different;
- and
- (ii) an aqueous-based electrolyte composition comprising an electrolyte and water, wherein the GPE composition comprises less than 10% by weight of an organic solvent.
An electrochemical cell, comprising:
- (i) an anode;
- (ii) a cathode;
- (iii) a gel polymer electrolyte (GPE) positioned between and in contact with the anode and the cathode;
- wherein the GPE includes a GPE-composition comprising (a) a cross-linked three-dimensional polymer network and (b) an aqueous-based electrolyte composition absorbed by the GPE, in which the electrolyte composition comprises an electrolyte and water, and wherein the GPE-composition comprises less than 10% by weight of an organic solvent.
- wherein the cross-linked three-dimensional polymer network comprises the reaction product of at least (i) a first monomer including at least three thiol functional groups;
- (ii) a second monomer including at least two vinyl functional groups, at least one alkyne functional group, or a combination thereof, and (iii) a third monomer including at least two thiol functional groups, wherein the first monomer and the third monomer are different.
A method of forming a gel polymer electrolyte (GPE), comprising radically-curing an aqueous composition of a mixture of monomers in an oxygen-containing environment;
- wherein the mixture of monomers comprise a first group of monomers comprising at least (a) a first monomer including at least three thiol functional groups, (b) a second monomer including at least two vinyl functional groups, at least one alkyne functional group, or a combination thereof, and (c) a third monomer including at least two thiol functional groups, wherein the first monomer and the third monomer are different.
A method of forming an electrochemical cell, comprising:
- depositing a gel polymer electrolyte (GPE) between and in contact with an anode and a cathode;
- wherein depositing the GPE comprises positioning a pre-fabricated GPE between the anode and the cathode or forming the GPE directly onto the anode or the cathode, and wherein the GPE includes a GPE-composition comprising (a) a cross-linked three-dimensional polymer network comprising the reaction product of at least (i) a first monomer including at least three thiol functional groups;
- (ii) a second monomer including at least two vinyl functional groups, at least one alkyne functional group, or a combination thereof, and (iii) a third monomer including at least two thiol functional groups, wherein the first monomer and the third monomer are different, and (b) an aqueous-based electrolyte composition absorbed by the GPE, in which the electrolyte composition comprises an electrolyte and water, and wherein the GPE-composition comprises less than 10% by weight of an organic solvent.
Dependencies are inferred from the claim text.