Electrochemical cells and electrolytes contained therein
AssigneeThe Johns Hopkins University
InventorsKonstantinos Gerasopoulos, Bing Tan, Spencer A. Langevin, Matthew W. Logan, Adam W. Freeman
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Abstract
Gel polymer electrolyte compositions including a cross-linked three-dimensional polymer network and an electrolyte composition comprising an electrolyte and water are disclosed. 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, and methods of forming an aqueous electrochemical cell including a gel polymer electrolyte, are also disclosed.
Claims7
A method of forming a gel polymer electrolyte (GPE), comprising:
- (i) providing a pre-cured composition comprising (a) a three-dimensionally cross-linkable monomeric mixture including at least a first monomer including an acrylate or methacrylate functional group and a second monomer or oligomer having at least two free-radically polymerizable functional groups comprising at least one acrylate group or methacrylate group, (b) at least one electrolyte salt, (c) a free-radical initiator, and (d) water;
- wherein the pre-cured composition has a molar concentration of the at least one electrolyte salt above 35 M;
- and
- (ii) curing the pre-cured composition via free-radical-mediated polymerization to form the GPE, wherein the GPE comprises (a) a cross-linked three-dimensional polymer network, (b) the at least one electrolyte, and (c) water.
Dependencies are inferred from the claim text.