The invention relates to a novel process for preparing lithium sulfide and to the use thereof, wherein a reaction of lithium-containing strong bases with hydrogen sulfide is undertaken in an aprotic organic solvent within the temperature range from −20 to 120° C. under inert conditions. The lithium
The invention relates to a novel process for preparing lithium sulfide and to the use thereof, wherein a reaction of lithium-containing strong bases with hydrogen sulfide is undertaken in an aprotic organic solvent within the temperature range from −20 to 120° C. under inert conditions. The lithium sulfide obtained by the process is used as a positive material in a galvanic element or for the synthesis of Li ion-conductive solids, especially for the synthesis of glasses, glass ceramics or crystalline products.
대표청구항▼
1. A method for preparing lithium sulfide comprising: reacting a lithium-containing base selected from the group consisting of a lithium alkylene, a lithium arylene, and a lithium amide with hydrogen sulfide in an aprotic organic solvent at a temperature of from −20° to 120° C. under inert condition
1. A method for preparing lithium sulfide comprising: reacting a lithium-containing base selected from the group consisting of a lithium alkylene, a lithium arylene, and a lithium amide with hydrogen sulfide in an aprotic organic solvent at a temperature of from −20° to 120° C. under inert conditions, wherein the aprotic organic solvent comprises at least one member selected from the group consisting of an aliphatic hydrocarbon, an aromatic hydrocarbon and an etheric solvent. 2. A method according to claim 1, wherein the lithium-containing base is butyllithium. 3. A method according to claim 1, wherein the lithium-containing base is selected from the group consisting of butyllithium, hexyllithium, lithium diisopropylamide and lithium hexamethyldisilazide. 4. A method according to claim 1, wherein the aprotic organic solvent is the etheric solvent. 5. A method according to claim 1, wherein the aprotic organic solvent comprises at least one member selected from the group consisting of hexane, toluene, diethyl ether, and tetrahydrofuran. 6. A method according to claim 1, wherein the reaction is carried out at a temperature range of 0° to 80° C. 7. A positive electrode comprising the lithium sulfide prepared by the process of claim 1 and a galvanic element. 8. A Li ion-conductive solids comprising the lithium sulfide prepared by the method of claim 1. 9. A glass, glass ceramics, or crystalline product comprising the lithium sulfide prepared by the method of claim 1. 10. Li argyrodite prepared with the lithium sulfide prepared by the method of claim 1. 11. A method according to claim 2, wherein the aprotic organic solvent is the etheric solvent. 12. A method according to claim 3, wherein the aprotic organic solvent is the etheric solvent. 13. A method according to claim 2, wherein the aprotic organic solvent comprises at least one member selected from the group consisting of hexane, toluene, diethyl ether, and tetrahydrofuran. 14. A method according to claim 3, wherein the aprotic organic solvent comprises at least one member selected from the group consisting of hexane, toluene, diethyl ether, and tetrahydrofuran. 15. A glass, glass ceramics, or crystalline product according to claim 9, wherein the reaction is carried out at a temperature range of 0° to 80° C. 16. Li argyrodite according to claim 10, wherein the reaction is carried out at a temperature range of 0° to 80° C. 17. A method according to claim 4, wherein the reaction is carried out at a temperature range of 0° to 80° C. 18. A method according to claim 5, wherein the reaction is carried out at a temperature range of 0° to 80° C. 19. Li argyrodite according to claim 10, wherein the aprotic organic solvent comprises at least one member selected from the group consisting of hexane, toluene, diethyl ether, and tetrahydrofuran. 20. Li argyrodite according to claim 16, wherein the aprotic organic solvent comprises at least one member selected from the group consisting of hexane, toluene, diethyl ether, and tetrahydrofuran.
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