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US 11,145,898 B2Granted
Composite electrolytes
AssigneeQuantumScape Battery, Inc.
InventorsKim Van Berkel, Tim Holme, Mohit Singh, Amal Mehrotra, Zhebo Chen, Kian Kerman, Wes Hermann, William Hudson
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Abstract
Set forth herein are electrolyte compositions that include both organic and inorganic constituent components and which are suitable for use in rechargeable batteries. Also set forth herein are methods and systems for making and using these composite electrolytes.
Claims21
An electrolyte comprising an inorganic material embedded in an organic material;
- wherein the inorganic material comprises particles of inorganic material which form a percolation network for lithium ion conduction through the electrolyte;
- wherein the organic material has a lithium conductivity of less than 10−8 S/cm at 80° C., wherein the inorganic material comprises necked-particles of inorganic material,
- wherein the inorganic material is a solid state electrolyte, and wherein the solid state electrolyte is an LPS:LiI electrolyte, wherein LPS is a mixture of Li2S:P2S5 having a molar ratio from 10:1 to 6:4, and wherein the molar ratio of LPS:LiI is from 95:5 to 70:30.
A method for making an electrolyte, comprising
- providing an inorganic material, wherein the inorganic material is a solid state electrolyte, and wherein the solid state electrolyte is an LPS:LiI electrolyte, wherein LPS is a mixture of Li2S:P2S5 having a molar ratio from 10:1 to 6:4, and wherein the molar ratio of LPS:LiI is from 95:5 to 70:30;
- providing an organic material having a lithium conductivity of less than 10−8 S/cm at 80° C.;
- mixing the inorganic and organic material to form a mixture;
- casting the mixture;
- and polymerizing the organic material;
- wherein the method optionally comprises adding a polymer binder;
- wherein the electrolyte comprises the inorganic material embedded in the organic material;
- wherein the inorganic material comprises particles of inorganic material which form a percolation network for lithium ion conduction through the electrolyte;
- wherein the inorganic material comprises necked-particles of inorganic material.
6 more elements
Dependencies are inferred from the claim text.