Glass comprising solid electrolyte particles and lithium battery

Patent metadata

Field	Value
Publication number	US-11075404-B2
Application number	US-201816232832-A
Country	US
Kind code	B2
Filing date	Dec 26, 2018
Priority date	Apr 10, 2009
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

A method for producing a solid electrolyte, comprising: grinding raw materials comprising lithium sulfide and phosphorus sulfide in a hydrocarbon solvent, optionally comprising stirring a slurry comprising the raw materials and the hydrocarbon solvent in a reaction vessel, and optionally, circulating the slurry through a connecting pipe, wherein the method is carried out in an apparatus comprising the grinder, the reaction vessel and the connecting pipe that connects the grinder and the reaction vessel.

First claim

The invention claimed is:

1. A method for producing a solid electrolyte, the method comprising:
grinding raw materials comprising lithium sulfide and phosphorus sulfide in a hydrocarbon solvent.

2. The method according to claim 1 , comprising:
the grinding raw materials comprising lithium sulfide and phosphorus sulfide in the hydrocarbon solvent in a grinder,
stirring a slurry comprising the raw materials and the hydrocarbon solvent in a reaction vessel, and
circulating the slurry through a connecting pipe,
wherein the method is carried out in an apparatus comprising the grinder, the reaction vessel and the connecting pipe that connects the grinder and the reaction vessel.

3. The method according to claim 1 , wherein
the grinding is carried out with a rotary mill, a swing mill, a vibration mill, or a bead mill.

4. The method according to claim 1 , wherein
the hydrocarbon solvent is a saturated hydrocarbon, an unsaturated hydrocarbon or an aromatic hydrocarbon.

5. The method according to claim 1 , wherein
the phosphorus sulfide is phosphorus pentasulfide, and
a molar ratio of the lithium sulfide to the phosphorus pentasulfide is from 50:50 to 80:20.

6. The method according to claim 4 , wherein
the phosphorus sulfide is phosphorus pentasulfide, and
a molar ratio of the lithium sulfide to the phosphorus pentasulfide is from 50:50 to 80:20.

7. The method according to claim 2 , wherein
the grinder is a rotary mill, a swing mill, a vibration mill, or a bead mill.

8. The method according to claim 2 , wherein
the grinder is a bead mill.

9. The method according to claim 8 , wherein
the hydrocarbon solvent is an aromatic hydrocarbon.

10. The method according to claim 8 , wherein
a reaction temperature in the reaction vessel is from 60° C. to 300° C.

11. The method according to claim 8 , wherein
a heat exchanger is provided to the connecting pipe, the heat exchanger cools the slurry discharged from the reaction vessel and then supplies the slurry to the grinder.

12. The method according to claim 9 , wherein
a heat exchanger is provided to the connecting pipe, the heat exchanger cools the slurry discharged from the reaction vessel and then supplies the slurry to the grinder.

13. The method according to claim 2 , wherein
a grinding temperature in the grinder is 20° C. or more and 90° C. or less.

14. The method according to claim 2 , wherein
the hydrocarbon solvent is a saturated hydrocarbon, an unsaturated hydrocarbon or an aromatic hydrocarbon.

15. The method according to claim 2 , wherein
the hydrocarbon solvent is an aromatic hydrocarbon.

16. The method according to claim 2 , wherein
the phosphorus sulfide is phosphorus pentasulfide.

17. The method according to claim 16 , wherein
a molar ratio of the lithium sulfide to the phosphorus pentasulfide is from 50:50 to 80:20.

18. The method according to claim 2 , wherein
a reaction temperature in the reaction vessel is from 60° C. to 300° C.

19. The method according to claim 2 , wherein
a heat exchanger is provided to the connecting pipe.

20. The method according to claim 19 , wherein
the heat exchanger cools the slurry discharged from the reaction vessel and then supplies the slurry to the grinder.

21. The method according to claim 1 , further comprising:
stirring a slurry comprising the raw materials and the hydrocarbon solvent.

Assignees

• Idemitsu Kosan Co

Inventors

• Aburatani Ryo
• Senga Minoru
• Ota Tsuyoshi
• Nakagawa Masaru

Classifications

• C03B2201/86

  Chalcogenide glasses, i.e. S, Se or Te glasses · CPC title

• C03B19/12

  by liquid-phase reaction processes · CPC title

• H01B1/122

  Ionic conductors · CPC title

• C03C1/02

  Pretreated ingredients · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title