All solid state battery

• US 20030232248A1
• Filed: 06/11/2003
• Published: 12/18/2003
• Est. Priority Date: 06/13/2002
• Status: Active Grant

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Ito, Shuji, Iwamoto, Kazuya
• Granted Patent: US 7,083,877 B2
• Time in Patent Office: Days
• US Class Current: 429/233
• CPC Class Codes: H01M 4/66 Selection of materials
• 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

Abstract

An all solid state battery comprising: (a) a positive electrode current collector layer, (b) a positive electrode active material layer carried on the positive electrode current collector layer, (c) a negative electrode current collector layer, (d) a negative electrode active material layer carried on the negative electrode current collector layer, (e) a solid electrolyte layer interposed between the positive and negative electrode active material layers, and (f) a substrate carrying either of the positive and negative electrode current collector layers, the substrate comprising a metal sheet and a coating layer covering the surface of the metal sheet, the coating layer comprising at least one metal nitride layer.

Claims

1. An all solid state battery comprising:

(a) a positive electrode current collector layer,

(b) a positive electrode active material layer carried on said positive electrode current collector layer,

(c) a negative electrode current collector layer,

(d) a negative electrode active material layer carried on said negative electrode current collector layer,

(e) a solid electrolyte layer interposed between said positive and negative electrode active material layers, and

(f) a substrate carrying either of said positive and negative electrode current collector layers,

said substrate comprising a metal sheet and a coating layer covering the surface of said metal sheet, said coating layer comprising at least one metal nitride layer.

2. The all solid state battery in accordance with claim 1, wherein said coating layer further comprises at least one metal oxide layer.

3. The all solid state battery in accordance with claim 1, wherein said coating layer further comprises at least one metal oxynitride layer.

4. The all solid state battery in accordance with claim 1, wherein said coating layer further comprises at least one metal oxide layer and at least one metal oxynitride layer.

5. The all solid state battery in accordance with claim 1, wherein said metal nitride layer comprises at least one selected from the group consisting of titanium nitride, aluminum nitride, silicon nitride, boron nitride and zirconium nitride.

6. The all solid state battery in accordance with claim 2, wherein said metal oxide layer comprises at least one selected from the group consisting of silicon oxide, titanium oxide, beryllium oxide, aluminum oxide and zirconium oxide.

7. The all solid state battery in accordance with claim 4, wherein said metal oxide layer comprises at least one selected from the group consisting of silicon oxide, titanium oxide, beryllium oxide, aluminum oxide and zirconium oxide.

8. The all solid state battery in accordance with claim 3, wherein said metal oxynitride layer comprises at least one selected from the group consisting of aluminum oxynitride, silicon oxynitride and zirconium oxynitride.

9. The all solid state battery in accordance with claim 4, wherein said metal oxynitride layer comprises at least one selected from the group consisting of aluminum oxynitride, silicon oxynitride and zirconium oxynitride.

10. The all solid state battery in accordance with claim 1, wherein said metal sheet comprises copper, nickel, iron, a copper alloy, a nickel alloy, an iron alloy or a stainless steel.