Method of synthesis of solid electrolyte, a solid-state electrolyte composition, and an electrochemical cell
AssigneeSolid Power, Inc.
InventorsBenjamin Carlson, Sean P. Culver, Ilya Iisenker
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Abstract
A method of synthesizing a solid-state electrolyte where P2S5, Na2S and LiCl are dissolved in one of more solvents; where upon reacting of the mixture, NaCl precipitates out and is removed from the solution; the solvent is removed; and the sulfide solid-state electrolyte is dried, then crystalized to be used in a solid-state battery. A solid-state battery comprising the produced sulfide solid-state electrolyte is also described.
Claims26
A method of synthesizing a solid-state electrolyte, comprising:
- dissolving a phosphorous containing compound and at least one first alkali metal material in one or more solvents to form a first solution;
- dissolving at least one second alkali metal material in one or more solvents to form a second solution;
- mixing the first solution and the second solution to create a combined solution wherein a metathesis reaction occurs in the combined solution between the at least one first alkali metal material and the at least one second alkali metal material to produce a solid-state electrolyte and one or more third alkali metal materials;
- precipitating the one or more third alkali metal materials to form a precipitated alkali metal material in the combined solution;
- removing the precipitated alkali metal material from the combined solution;
- removing the one or more solvents from the combined solution to recover an isolated solid-state electrolyte.
A method of synthesizing a solid-state electrolyte, comprising:
- dissolving a phosphorous containing compound and at least one first alkali metal material in one or more solvents to form a first solution;
- dissolving at least one second alkali metal material in the first solution to form a second solution;
- mixing the second solution wherein a metathesis reaction occurs between the at least one first alkali metal material and the at least one second alkali metal material to produce a solid-state electrolyte and one or more third alkali metal materials;
- precipitating the one or more third alkali metal materials to form a precipitated alkali metal material in the second solution;
- removing the precipitated alkali metal material from the second solution;
- and
- removing the one or more solvents from the second solution to recover an isolated solid-state electrolyte.
A method of synthesizing a solid-state electrolyte, comprising:
- in a first solvent, forming a first solution comprising Na2S and LiCl;
- precipitating NaCl from the first solution;
- in a second solvent, forming a second solution of dissolved Na2S and P2S5;
- mixing the first and second solutions to form a third solution wherein a solid-state electrolyte is created;
- in the third solution, isolating a supernatant comprising the solid-state electrolyte from the precipitated NaCl;
- removing precipitated NaCl from the third solution;
- removing one or both of the first solvent and the second solvent from the supernatant comprising the solid-state electrolyte;
- and
- processing the solid-state electrolyte.
Dependencies are inferred from the claim text.