High-speed charging/discharging electrode and battery

• US 20040219428A1
• Filed: 04/08/2004
• Published: 11/04/2004
• Est. Priority Date: 05/01/2003
• Status: Abandoned Application

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Nagayama, Mori
• Application Number:
  US10/820,054
• Publication Number:
  US 20040219428A1
• Time in Patent Office: Days
• US Class Current: 429/218.1
• CPC Class Codes: H01M 10/0413 Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
• CPC Class Codes: H01M 10/0445 Multimode batteries, e.g. containing auxiliary cells or electrodes switchable in parallel or series connections
• 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 2004/021 Physical characteristics, e.g. porosity, surface area
• CPC Class Codes: H01M 2004/027 Negative electrodes
• CPC Class Codes: H01M 2300/0082 Organic polymers
• CPC Class Codes: H01M 2300/0085 Immobilising or gelification of electrolyte
• CPC Class Codes: H01M 4/13 Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
• CPC Class Codes: H01M 4/131 Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
• CPC Class Codes: H01M 4/133 Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
• CPC Class Codes: H01M 4/136 Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
• CPC Class Codes: H01M 4/1391 of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
• CPC Class Codes: H01M 4/1395 of electrodes based on metals, Si or alloys
• CPC Class Codes: H01M 4/38 of elements or alloys
• CPC Class Codes: H01M 4/387 Tin or alloys based on tin
• CPC Class Codes: H01M 4/485 of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy H01M4/505, H01M4/525 take precedence
• CPC Class Codes: H01M 4/505 of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• CPC Class Codes: H01M 4/581 Chalcogenides or intercalation compounds thereof
• CPC Class Codes: H01M 4/5815 Sulfides
• CPC Class Codes: H01M 4/5825 : Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
• CPC Class Codes: H01M 4/587 : for inserting or intercalating light metals
• 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

The present invention provides an anode electrode for a secondary battery. The anode electrode is characterized in that the anode layer thickness is 30 μm or less, and that there is used, as an anode material, at least one of: oxide, sulfide and salt of metal which forms an alloy with lithium; and boron-added carbon. Adoption of the anode electrode of the present invention allows to obtain a lithium ion secondary battery which is capable of avoiding deposition of lithium even by high-speed discharge and charge with a larger electric current and which has a higher energy density.

Claims

1. An anode electrode for a secondary battery having a cathode and an anode for releasing and receiving the same kind of metal ion therebetween, comprising:

an anode layer including at least one of;

oxide, sulfide and salt of other metal which forms an alloy with the metal to be obtained by reducing the metal ion; and

boron-added carbon,

wherein the anode layer has a thickness of 30 μ

m or less.

2. An anode electrode according to claim 1,

wherein the anode layer has a thickness between 1 μ

m inclusive and 30 μ

m inclusive.

3. An anode electrode according to claim 1,

wherein the other metal is at least one metal selected from tin, germanium, indium, lead, silver and antimony, and

the boron-added carbon is boron-added amorphous carbon or boron-added graphite.

4. An anode electrode for a secondary battery having a cathode and an anode for releasing and receiving the same kind of metal ion therebetween, comprising:

an anode layer including carbonaceous material;

wherein the anode layer has a thickness less than 1 μ

m.

5. An anode electrode according to claim 4,

wherein the carbonaceous material is amorphous carbon or graphite.

6. A lithium ion secondary battery, comprising:

an anode electrode including an anode layer having at least one of;

oxide, sulfide and salt of metal which forms an alloy with lithium; and

boron-added carbon;

a cathode electrode including a cathode layer; and

an electrolyte interposed between the cathode electrode and the anode electrode;

wherein the anode layer has a thickness of 30 μ

m or less.

7. A lithium ion secondary battery according to claim 6,

wherein the lithium ion secondary battery has a structure including a plurality of bipolar electrodes serially stacked by interposing electrolyte therebetween, each bipolar electrode including a collector having one surface formed with the cathode layer and the other surface formed with the anode layer.

8. A lithium ion secondary battery according to claim 6,

wherein the cathode layer includes a cathode active material which is a lithium transition-metal composite oxide.

9. A lithium ion secondary battery according to claim 6,

wherein the electrolyte comprises polymer used in a gel form or solid form.

10. A lithium ion secondary battery according to claim 6,

wherein the lithium ion secondary battery is used in an assembled battery.

11. A lithium ion secondary battery according to claim 10,

wherein the assembled battery is used for a vehicle.

12. A lithium ion secondary battery, comprising:

an anode electrode including an anode layer having carbonaceous material;

a cathode electrode including a cathode layer; and

an electrolyte interposed between the cathode electrode and the anode electrode;

wherein the anode layer has a thickness less than 1 μ

m.

13. A lithium ion secondary battery according to claim 12,

wherein the lithium ion secondary battery has a structure including a plurality of bipolar electrodes serially stacked by interposing electrolyte therebetween, each bipolar electrode including a collector having one surface formed with the cathode layer and the other surface formed with the anode layer.

14. A lithium ion secondary battery according to claim 12,

wherein the cathode layer includes a cathode active material which is a lithium transition-metal composite oxide.

15. A lithium ion secondary battery according to claim 12,

wherein the electrolyte comprises polymer used in a gel form or solid form.

16. A lithium ion secondary battery according to claim 12,

wherein the lithium ion secondary battery is used in an assembled battery.

17. A lithium ion secondary battery according to claim 16,

wherein the assembled battery is used for a vehicle.