Method for manufacturing sulfide solid electrolyte

Patent metadata

Field	Value
Publication number	US-9761906-B2
Application number	US-201314651479-A
Country	US
Kind code	B2
Filing date	Nov 1, 2013
Priority date	Dec 27, 2012
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A main object of the present invention is to provide a method for manufacturing a sulfide solid electrolyte that enables a sulfide solid electrolyte whose ion-conducting characteristic is easy to be improved, to be manufactured. The present invention is a method for manufacturing a sulfide solid electrolyte including loading a raw material for manufacturing a sulfide solid electrolyte which is mainly composed of a substance represented by the general formula of (100−x)(0.75Li 2 S.0.25P 2 S 5 ).xLiI (here, 0<x<100), into a vessel; and amorphizing the raw material after said loading, wherein a reaction site temperature in the vessel is controlled so that x included in the general formula and the reaction site temperature y [° C.] in the vessel in said amorphizing satisfy y<−2.00x+1.79×10 2 .

First claim

The invention claimed is:

1. A method for manufacturing a sulfide solid electrolyte, the method comprising:
loading a raw material for manufacturing a sulfide solid electrolyte which is mainly composed of a substance represented by a general formula of (100−x)(0.75Li 2 S.0.25P 2 S 5 ).xLiI (here, 0<x<100), into a vessel; and
amorphizing the raw material after said loading by giving heat energy to an inside of the vessel,
wherein a reaction site temperature in the vessel is controlled so that x included in the general formula and the reaction site temperature y (° C.) in the vessel in said amorphizing satisfy a following Formula (1):
y<− 2.00 x+ 1.79×10 2   Formula (1).

2. The method for manufacturing a sulfide solid electrolyte according to claim 1 , wherein said x is equal to or larger than 20.

3. The method for manufacturing a sulfide solid electrolyte according to claim 1 , wherein in said amorphizing, the reaction site temperature in the vessel is 40° C. or over.

4. The method for manufacturing a sulfide solid electrolyte according to claim 1 , wherein the reaction site temperature in the vessel is further controlled so that said x and the reaction site temperature y satisfy a following Formula (2):
y>− 2.00 x+ 1.52×10 2   Formula (2).

5. The method for manufacturing a sulfide solid electrolyte according to claim 1 , wherein said amorphizing is amorphizing the raw material by a wet mechanical milling method.

6. The method for manufacturing a sulfide solid electrolyte according to claim 1 , wherein said x satisfies 15≦x≦30.

7. The method for manufacturing a sulfide solid electrolyte according to claim 2 , wherein in said amorphizing, the reaction site temperature in the vessel is 40° C. or over.

8. The method for manufacturing a sulfide solid electrolyte according to claim 2 , wherein the reaction site temperature in the vessel is further controlled so that said x and the reaction site temperature y satisfy a following formula (2):
y>− 2.00 x+ 1.52×10 2   Formula (2).

9. The method for manufacturing a sulfide solid electrolyte according to claim 2 , wherein said amorphizing is amorphizing the raw material by a wet mechanical milling method.

10. The method for manufacturing a sulfide solid electrolyte according to claim 3 , wherein said amorphizing is amorphizing the raw material by a wet mechanical milling method.

11. The method for manufacturing a sulfide solid electrolyte according to claim 4 , wherein said amorphizing is amorphizing the raw material by a wet mechanical milling method.

12. The method for manufacturing a sulfide solid electrolyte according to claim 7 , wherein said amorphizing is amorphizing the raw material by a wet mechanical milling method.

13. The method for manufacturing a sulfide solid electrolyte according to claim 8 , wherein said amorphizing is amorphizing the raw material by a wet mechanical milling method.

14. The method for manufacturing a sulfide solid electrolyte according to claim 2 , wherein said x satisfies 15≦x≦30.

15. The method for manufacturing a sulfide solid electrolyte according to claim 3 , wherein said x satisfies 15≦x≦30.

16. The method for manufacturing a sulfide solid electrolyte according to claim 4 , wherein said x satisfies 15≦x≦30.

17. The method for manufacturing a sulfide solid electrolyte according to claim 5 , wherein said x satisfies 15≦x≦30.

18. The method for manufacturing a sulfide solid electrolyte according to claim 7 , wherein said x satisfies 15≦x≦30.

19. The method for manufacturing a sulfide solid electrolyte according to claim 8 , wherein said x satisfies 15≦x≦30.

20. The method of claim 1 , where the reaction site temperature in the vessel is indirectly controlled via a controlling of a temperature over an outer surface of the vessel.

Assignees

• Toyota Motor Co Ltd

Inventors

• Yanagi Takuo
• Tanaka Takumi
• Kitsunai Shinichiro

Classifications

• C03C3/323

  containing halogen, e.g. chalcohalide glasses · CPC title

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M2300/0068

  inorganic · CPC title

• H01B1/10

  sulfides · CPC title

• H01M10/0562 Primary

  Solid materials · CPC title