CATHODE MATERIAL

• US 20140079999A1
• Filed: 09/18/2013
• Published: 03/20/2014
• Est. Priority Date: 09/20/2012
• Status: Abandoned Application

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Isogai, Yuji, Omichi, Kaoru, Aoyagi, Shintaro
• Application Number:
  US14/030,214
• Publication Number:
  US 20140079999A1
• Time in Patent Office: Days
• US Class Current: 429/221
• 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 4/364 as mixtures
• CPC Class Codes: H01M 4/366 as layered products
• CPC Class Codes: H01M 4/582 Halogenides
• CPC Class Codes: H01M 4/5825 Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The present invention provides a cathode material that can achieve a high energy density and excellent instantaneous output characteristics in lithium ion secondary batteries. The cathode material is used in a lithium ion secondary battery 1, and contains FeF₃ and carbon-coated LiFePO₄ as cathode active materials.

Claims

1. A cathode material used in a lithium ion secondary battery, the cathode material comprising FeF₃ and carbon-coated LiFePO₄ as cathode active materials.

2. The cathode material according to claim 1, wherein the mass ratio of FeF₃ to carbon-coated LiFePO₄ is in a range of 86:

14 to 57;

43.

3. The cathode material according to claim 1, further comprising a conductive auxiliary.

4. The cathode material according to claim 3, wherein the cathode material comprises:

FeF₃ in a range of 40 to 60% by mass;

carbon-coated LiFePO₄ in a range of 10 to 30% by mass; and

the conductive auxiliary in a range of 20 to 30% by mass, and

wherein a total thereof is 100% by mass.