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US 2020/0028210 A1Published application
High Performance Air Stable Solid Polymer Electrolyte
AssigneesUniversity of Maryland, College Park, The United States of America as represented by the Secretary of the Army
InventorsMatthew D. WIDSTROM, Peter KOFINAS, Arthur V. CRESCE, Kang XU
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Abstract
The present invention is directed to aqueous solid polymer electrolytes that comprise a lithium salt and battery cells comprising the same. The present invention is also directed to methods of making the electrolytes and methods of using the electrolytes in batteries and other electrochemical technologies.
Claims27
An electrolyte, comprising:
- (a) at least one lithium salt in water;
- and
- (b) at least one polymer;
- wherein the molality of the lithium salt to water is between about 1 and about 30, and wherein the ionic conductivity of the electrolyte at 25° C. is between about 1 mS/cm and about 10 mS/cm.
1 more element
An electrochemical battery cell comprising:
- (a) an electrolyte comprising at least one lithium salt in water and at least one polymer;
- wherein the molality of the lithium salt to water is between about 1 and about 30, and wherein the ionic conductivity of the electrolyte at 25° C. is between about 1 mS/cm and about 10 mS/cm;
- (b) an anode;
- and
- (c) a cathode.
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A method of preparing an electrolyte comprising:
- (a) admixing at least one lithium salt in water and at least one polymer;
- wherein the molality of the lithium salt to water is between about 1 and about 30, and wherein the ionic conductivity of the electrolyte at 25° C. is between about 1 mS/cm and about 10 mS/cm;
- and
- (b) pressing the admixture of (a) at a temperature between about 30° C. and about 150° C. and at a pressure between about 0.2 metric tons and about 2 metric tons.
1 more element
Dependencies are inferred from the claim text.