CN-122003752-A - Method for transporting sulfide solid electrolyte

Abstract

A method for transporting a sulfide solid electrolyte, comprising a step of compressing a powdery sulfide solid electrolyte containing lithium atoms, sulfur atoms and phosphorus atoms to obtain a powder compact, a step of filling the powder compact into a packaging container to obtain a package, a step of transporting the package, and a step of taking out the powder compact from the package and crushing the powder compact to obtain a crushed product.

Inventors

• TAMURA HIROYUKI
• AIDA MASAO
• YOSHIDA
• Tian Bianliang
• KONDO NORIHITO

Assignees

• 出光兴产株式会社

Dates

Publication Date

20260508

Application Date

20241003

Priority Date

20231006

Claims (16)

1. 1. A method for transporting a sulfide solid electrolyte, comprising: A step of compressing a powdery sulfide solid electrolyte containing lithium atoms, sulfur atoms and phosphorus atoms to obtain a powder compact; A step of filling the powder compact into a packaging container to obtain a package; a step of transporting the package; And a step of taking out the powder compact from the package and crushing the powder compact to obtain a crushed product.
2. 2. The method for transporting a sulfide solid electrolyte according to claim 1, wherein the powder compact has a density of 0.2g/cm 3 or more.
3. 3. The method for transporting a sulfide solid electrolyte according to claim 1 or 2, wherein in the step of obtaining a powder compact, a solvent is added to the powder-like sulfide solid electrolyte and then the powder-like sulfide solid electrolyte is compressed.
4. 4. The method for transporting a sulfide solid electrolyte according to any one of claims 1 to 3, wherein in the step of obtaining a crushed material, the crushed material is crushed after adding a solvent to the powder compact.
5. 5. The method for transporting a sulfide solid electrolyte according to any one of claims 1 to 4, wherein the packaging container includes 1 or more bags, and at least 1 of the bags is made of a plastic film having a metal film layer.
6. 6. The method for transporting a sulfide solid electrolyte according to any one of claims 1 to 5, wherein the package is further packed in an outer packaging container and then transported.
7. 7. The method for transporting a sulfide solid electrolyte according to claim 6, wherein said outer packaging container is 1 or more selected from a metal can and a plastic container.
8. 8. A sulfide solid electrolyte transport system, comprising: compression molding equipment for compressing powdery sulfide solid electrolyte containing lithium atoms, sulfur atoms and phosphorus atoms to obtain powder pressed compact; A packaging device for filling the powder compact into a packaging container to obtain a package; A transport mechanism that transports the package; And a crushing device for taking out the powder compact from the package and crushing the powder compact to obtain crushed objects.
9. 9. A method of manufacturing an all-solid battery material, comprising: A step of compressing a powdery sulfide solid electrolyte containing lithium atoms, sulfur atoms and phosphorus atoms to obtain a powder compact; A step of filling the powder compact into a packaging container to obtain a package; a step of transporting the package; And a step of taking out the powder compact from the package and crushing the powder compact to obtain a crushed product.
10. 10. An all-solid battery comprising the all-solid battery material obtained by the method for producing an all-solid battery material according to claim 9 in a solid electrolyte layer.
11. 11. An electrode composite material comprising the all-solid battery material obtained by the method for producing an all-solid battery material according to claim 9 and an electrode active material.
12. 12. An all-solid battery comprising the electrode composite material according to claim 11 in at least one of a positive electrode and a negative electrode.
13. 13. A package is characterized in that a powder compact obtained by compressing a powder sulfide solid electrolyte containing lithium atoms, sulfur atoms and phosphorus atoms is filled into a packaging container.
14. 14. The package of claim 13, further comprising an outer packaging container.
15. 15. A method for transporting a sulfide solid electrolyte, comprising: a step of compressing a powdery sulfide solid electrolyte containing lithium atoms, sulfur atoms and phosphorus atoms to obtain a powder compact, The density of the powder compact is more than 0.2g/cm 3 .
16. 16. A method of manufacturing an all-solid battery material, comprising: a step of compressing a powdery sulfide solid electrolyte containing lithium atoms, sulfur atoms and phosphorus atoms to obtain a powder compact, The density of the powder compact is more than 0.2g/cm 3 .

Description

Method for transporting sulfide solid electrolyte Technical Field The present invention relates to a method for transporting sulfide solid electrolyte. Background With the rapid spread of information-related devices and communication devices such as personal computers, video cameras, and mobile phones in recent years, the development of batteries used as power sources for such devices has been emphasized. Conventionally, although an electrolyte containing a flammable organic solvent has been used for a battery used for such a purpose, the battery has been entirely solidified, whereby a safety device can be simplified without using a flammable organic solvent in the battery, and the battery has been developed to replace the electrolyte with a solid electrolyte because of excellent manufacturing cost and productivity. As a method of transporting a solid electrolyte, patent document 1 discloses a package for protecting a sheet-like solid electrolyte. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2010-105729 Disclosure of Invention Technical problem to be solved by the invention In the case of preparing an electrode composite material using a sulfide solid electrolyte and an electrode active material, the sulfide solid electrolyte may be temporarily produced, transported to another place, and then mixed with the electrode active material to produce the electrode composite material. As described above, there is a case where a sulfide solid electrolyte is produced and then transported to another factory or the like. However, since sulfide solid electrolytes are often powders having particle diameters of about 0.1 to several micrometers, they have a large bulk and are easily scattered, and therefore, they have a problem of being difficult to transport. In addition, since there is a concern that sulfide solid electrolyte generates hydrogen sulfide by contact with air and moisture contained therein, it is particularly important to suppress scattering during transportation. The present inventors have intensively developed a transportation method suitable for the sulfide solid electrolyte in consideration of the properties of the sulfide solid electrolyte, and as a result, have found that the above problems can be solved by manufacturing the sulfide solid electrolyte into a powder compact and then transporting the powder compact. That is, an object of the present invention is to provide a method for efficiently transporting a sulfide solid electrolyte while preventing scattering. Solution to the above technical problems The transportation method of sulfide solid electrolyte comprises the following steps: A step of compressing a powdery sulfide solid electrolyte containing lithium atoms, sulfur atoms and phosphorus atoms to obtain a powder compact; A step of filling the powder compact into a packaging container to obtain a package; a step of transporting the package; And a step of taking out the powder compact from the package and crushing the powder compact to obtain a crushed product. Effects of the invention According to the present invention, a method for efficiently transporting a sulfide solid electrolyte while preventing scattering can be provided. Detailed Description Hereinafter, an embodiment of the present invention (hereinafter, sometimes referred to as "the present embodiment") will be described. In the present specification, the upper and lower limits of the numerical ranges "above", "below", "to" are arbitrarily combinable, and the numerical values of the examples can be used as the upper and lower limits. In addition, a preferable regulation can be arbitrarily adopted. That is, one of the rules set as preferable and another one or more of the rules set as preferable can be combined and used. It can also be said that a combination of the preferable items with each other is more preferable. (Findings obtained by the inventors for carrying out the present invention) The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have found the following matters, thereby completing the present invention. Patent document 1 discloses a method of protecting a solid electrolyte formed into a thin plate shape from breakage or adhesion of foreign matter, but does not mention a method of transporting a powdery sulfide solid electrolyte. In view of the above, the present inventors have found that a powdered sulfide solid electrolyte can be transported efficiently while preventing scattering of the sulfide solid electrolyte by temporarily forming the powdered sulfide solid electrolyte into a powder compact, filling the powder compact into a packaging container, and then producing a package, and then transporting the package, and finally crushing the package. (Various modes for the present embodiment) The transportation method of the sulfide solid electrolyte according to the first aspect of the present embodiment incl