Method of manufacturing solid electrolyte battery

• US 20050132562A1
• Filed: 12/20/2004
• Published: 06/23/2005
• Est. Priority Date: 12/22/2003
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Horie, Hideaki, Saito, Takamitsu
• Granted Patent: US 7,695,865 B2
• Time in Patent Office: Days
• US Class Current: 29/623.500
• CPC Class Codes: H01M 10/0565 Polymeric materials, e.g. gel-type or solid-type
• CPC Class Codes: H01M 10/38 Construction or manufacture
• CPC Class Codes: H01M 4/0404 by coating on electrode collectors
• CPC Class Codes: H01M 4/0416 involving impregnation with a solution, dispersion, paste or dry powder H01M4/0438 takes precedence
• CPC Class Codes: H01M 4/043 involving compressing or compaction
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/49115 including coating or impregnating

Abstract

A method of manufacturing a solid electrolyte battery includes a step of thermally pressing a composite layer including a positive electrode ink layer, an electrolyte ink layer and a negative electrode ink layer that are formed by coating a positive electrode ink, an electrolyte ink and a negative electrode ink. Further, the positive electrode ink, the electrolyte ink and the negative electrode ink contain a polymer electrolyte. By this method, it is possible to improve the flow of ions across respective interlayers of a positive electrode active material layer, a solid electrolyte layer and a negative electrode active material layer.

Claims

1. A method of manufacturing a solid electrolyte battery having an electric power-generating element composed of a positive electrode, a solid electrolyte layer and a negative electrode that are stacked, the method comprising:

thermally pressing a composite layer including a positive electrode ink layer, an electrolyte ink layer and a negative electrode ink layer that are formed by coating a positive electrode ink, an electrolyte ink and a negative electrode ink,

wherein the positive electrode ink, the electrolyte ink and the negative electrode ink contain a polymer electrolyte.

2. A method of manufacturing a solid electrolyte battery according to claim 1, further comprising:

preparing the positive electrode ink containing a polymer electrolyte, a conductive material, a positive electrode active material and a solvent;

preparing the negative electrode ink containing a polymer electrolyte, a negative electrode active material, and a solvent;

preparing the electrolyte ink containing a polymer electrolyte and a solvent;

coating one of the positive electrode ink and the negative electrode ink on a collector;

coating the electrolyte ink on the positive electrode ink layer or the negative electrode ink layer formed by the coating; and

coating the other one of the positive electrode ink and the negative electrode ink on the electrolyte ink layer formed by the coating.

3. A method of manufacturing a solid electrolyte battery according to claim 1,

wherein the polymer electrolyte is formed by thermally polymerizing a raw material polymer.

4. A method of manufacturing a solid electrolyte battery having an electric power-generating element composed of a positive electrode, a solid electrolyte layer and a negative electrode that are stacked, the method comprising:

thermally pressing a composite layer including a positive electrode particle ink layer, an electrolyte ink layer and a negative electrode particle ink layer that are formed by coating a positive electrode particle ink, an electrolyte ink, and a negative electrode particle ink,

wherein the positive electrode particle ink includes a positive electrode polymer particle containing a polymer electrolyte, the electrolyte ink includes a polymer electrolyte, and the negative electrode particle ink includes a negative electrode polymer particle containing a polymer electrolyte.

5. A method of manufacturing a solid electrolyte battery according to claim 4, further comprising:

preparing the positive electrode polymer particle containing a polymer electrolyte, a conductive material and a positive electrode active material;

preparing the negative electrode polymer particle containing a polymer electrolyte and a negative electrode active material;

dispersing the positive electrode polymer particle in a solvent to form the positive electrode particle ink;

dispersing the negative electrode polymer particle in a solvent to form the negative electrode particle ink;

preparing the electrolyte ink containing a polymer electrolyte and a solvent;

coating one of the positive electrode particle ink and the negative electrode particle ink on a collector;

coating the electrolyte particle ink on the positive electrode particle ink layer or the negative electrode particle ink layer formed by the coating; and

coating the other one of the positive electrode particle ink and the negative electrode particle ink on the electrolyte ink layer formed by the coating.

6. A method of manufacturing a solid electrolyte battery according to claim 4,

wherein the electrolyte ink includes an electrolyte particle ink in which a polymer electrolyte is grained into a solid particle that is dispersed in a solvent.

7. A method of manufacturing a solid electrolyte battery according to claim 4,

wherein the polymer electrolyte is formed by thermally polymerizing a raw material polymer.

8. A solid electrolyte battery, comprising:

an electric power-generating element composed of a positive electrode, a solid electrolyte layer and a negative electrode that are stacked, the positive electrode, the solid electrolyte layer and the negative electrode being formed in accordance with a process comprising;

thermally pressing a composite layer including a positive electrode ink layer, an electrolyte ink layer and a negative electrode ink layer that are formed by coating a positive electrode ink, an electrolyte ink and a negative electrode ink,

wherein the positive electrode ink, the electrolyte ink and the negative electrode ink contain a polymer electrolyte.

9. An assembled battery, comprising:

a solid electrolyte battery including;

an electric power-generating element composed of a positive electrode, a solid electrolyte layer and a negative electrode that are stacked, the positive electrode, the solid electrolyte layer and the negative electrode being formed in accordance with a process comprising;

thermally pressing a composite layer including a positive electrode ink layer, an electrolyte ink layer and a negative electrode ink layer that are formed by coating a positive electrode ink, an electrolyte ink and a negative electrode ink,

wherein the positive electrode ink, the electrolyte ink and the negative electrode ink contain a polymer electrolyte, and

a plurality of the solid electrolyte batteries are connected and installed in series or in parallel.

10. A combined assembled battery, comprising:

an assembled battery comprising;

a solid electrolyte battery including;

an electric power-generating element composed of a positive electrode, a solid electrolyte layer and a negative electrode that are stacked, the positive electrode, the solid electrolyte layer and the negative electrode being formed in accordance with a process comprising;

thermally pressing a composite layer including a positive electrode ink layer, an electrolyte ink layer and a negative electrode ink layer that are formed by coating a positive electrode ink, an electrolyte ink and a negative electrode ink,

wherein the positive electrode ink, the electrolyte ink and the negative electrode ink contain a polymer electrolyte, and

a plurality of the solid electrolyte batteries are connected and installed in series or in parallel.

11. A combined assembled battery according to claim 10, wherein the assembled battery is independently detachable.

12. A combined assembled battery according to claim 10, wherein the combined assembled battery is mounted on a vehicle.

13. A solid electrolyte battery, comprising:

an electric power-generating element composed of a positive electrode, a solid electrolyte layer and a negative electrode that are stacked, the positive electrode, the solid electrolyte layer and the negative electrode being formed in accordance with a process comprising;

thermally pressing a composite layer including a positive electrode particle ink layer, an electrolyte ink layer and a negative electrode particle ink layer that are formed by coating a positive electrode particle ink, an electrolyte ink, and a negative electrode particle ink,

wherein the positive electrode particle ink includes a positive electrode polymer particle containing a polymer electrolyte, the electrolyte ink includes a polymer electrolyte, and the negative electrode particle ink includes a negative electrode polymer particle containing a polymer electrolyte.

14. An assembled battery, comprising:

a solid electrolyte battery including;

an electric power-generating element composed of a positive electrode, a solid electrolyte layer and a negative electrode that are stacked, the positive electrode, the solid electrolyte layer and the negative electrode being formed in accordance with a process comprising;

thermally pressing a composite layer including a positive electrode particle ink layer, an electrolyte ink layer and a negative electrode particle ink layer that are formed by coating a positive electrode particle ink, an electrolyte ink, and a negative electrode particle ink,

wherein the positive electrode particle ink includes a positive electrode polymer particle containing a polymer electrolyte, the electrolyte ink includes a polymer electrolyte, and the negative electrode particle ink includes a negative electrode polymer particle containing a polymer electrolyte, and

a plurality of the solid electrolyte batteries are connected and installed in series or in parallel.

15. A combined assembled battery, comprising:

an assembled battery comprising;

a solid electrolyte battery including;

an electric power-generating element composed of a positive electrode, a solid electrolyte layer and a negative electrode that are stacked, the positive electrode, the solid electrolyte layer and the negative electrode being formed in accordance with a process comprising;

thermally pressing a composite layer including a positive electrode particle ink layer, an electrolyte ink layer and a negative electrode particle ink layer that are formed by coating a positive electrode particle ink, an electrolyte ink, and a negative electrode particle ink,

wherein the positive electrode particle ink includes a positive electrode polymer particle containing a polymer electrolyte, the electrolyte ink includes a polymer electrolyte, and the negative electrode particle ink includes a negative electrode polymer particle containing a polymer electrolyte, and

a plurality of the solid electrolyte batteries are connected and installed in series or in parallel.

16. A combined assembled battery according to claim 15,

wherein the assembled battery is independently detachable.

17. A combined assembled battery according to claim 15,

wherein the combined assembled battery is mounted on a vehicle.