ELECTRODE FOR NON-AQUEOUS ELECTROLYTE BATTERY, AND NON-AQUEOUS ELECTROLYTE BATTERY USING THE ELECTRODE

• US 20120244431A1
• Filed: 03/22/2012
• Published: 09/27/2012
• Est. Priority Date: 03/23/2011
• Status: Abandoned Application

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Tani, Yuji, Donoue, Kazunori
• Application Number:
  US13/427,079
• Publication Number:
  US 20120244431A1
• Time in Patent Office: Days
• US Class Current: 429/211
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0565 Polymeric materials, e.g. gel-type or solid-type
• CPC Class Codes: H01M 4/133 Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
• CPC Class Codes: H01M 4/587 for inserting or intercalating light metals
• CPC Class Codes: H01M 4/622 being polymers
• CPC Class Codes: H01M 4/661 Metal or alloys, e.g. alloy coatings H01M4/669 take precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

An electrode for a non-aqueous electrolyte battery has a current collector; and an electrode active material layer formed on the current collector, the electrode active material layer containing an electrode active material and carboxymethylcellulose. The weight of the electrode active material layer is at 250 g/m² to 350 g/m²; the degree of etherification of the carboxymethylcellulose is from 0.5 to 1.0; the average degree of polymerization of the CMC is from 1600 to 1800; and the amount of the carboxymethylcellulose is set at from 0.4 mass % to 0.75 mass % with respect to 100 mass % of the electrode active material.

Claims

1. An electrode for a non-aqueous electrolyte battery, comprising:

a current collector; and

an electrode active material layer formed on the current collector, the electrode active material layer containing an electrode active material and carboxymethylcellulose, wherein;

the electrode active material layer has a weight of from 250 g/m² to 350 g/m²;

the carboxymethylcellulose has a degree of etherification of from 0.5 to 1.0 and an average degree of polymerization of from 1600 to 1800; and

the electrode active material layer contains the carboxymethylcellulose in an amount of from 0.4 mass % to 0.75 mass % with respect to 100 mass % of the electrode active material.

2. The electrode for a non-aqueous electrolyte battery according to claim 1, wherein the electrode active material layer contains the carboxymethylcellulose in an amount of from 0.4 mass % to 0.625 mass % with respect to 100 mass % of the electrode active material.

3. The electrode for a non-aqueous electrolyte battery according to claim 1, wherein the electrode active material is a negative electrode active material.

4. The electrode for a non-aqueous electrolyte battery according to claim 2, wherein the electrode active material is a negative electrode active material.

5. The electrode for a non-aqueous electrolyte battery according to claim 1, wherein the electrode active material is a carbon material.

6. The electrode for a non-aqueous electrolyte battery according to claim 3, wherein the electrode active material is a carbon material.

7. The electrode for a non-aqueous electrolyte battery according to claim 4, wherein the electrode active material is a carbon material.

8. The electrode for a non-aqueous electrolyte battery according to claim 5, wherein the electrode active material is graphite.

9. The electrode for a non-aqueous electrolyte battery according to claim 6, wherein the electrode active material is graphite.

10. The electrode for a non-aqueous electrolyte battery according to claim 7, wherein the electrode active material is graphite.

11. The electrode for a non-aqueous electrolyte battery according to claim 1, wherein the current collector is a metal foil.

12. The electrode for a non-aqueous electrolyte battery according to claim 2, wherein the current collector is a metal foil.

13. The electrode for a non-aqueous electrolyte battery according to claim 3, wherein the current collector is a metal foil.

14. The electrode for a non-aqueous electrolyte battery according to claim 4, wherein the current collector is a metal foil.

15. The electrode for a non-aqueous electrolyte battery according to claim 1, wherein the electrode active material layer contains styrene-butadiene rubber.

16. The electrode for a non-aqueous electrolyte battery according to claim 2, wherein the electrode active material layer contains styrene-butadiene rubber.

17. The electrode for a non-aqueous electrolyte battery according to claim 3, wherein the electrode active material layer contains styrene-butadiene rubber.

18. The electrode for a non-aqueous electrolyte battery according to claim 4, wherein the electrode active material layer contains styrene-butadiene rubber.

19. A non-aqueous electrolyte battery comprising an electrode for a non-aqueous electrolyte battery according to claim 1.

20. A non-aqueous electrolyte battery comprising an electrode for a non-aqueous electrolyte battery according to claim 2.