Electrode active material, production method for said electrode active material, electrode and secondary battery

Patent metadata

Field	Value
Publication number	US-9601757-B2
Application number	US-201414279720-A
Country	US
Kind code	B2
Filing date	May 16, 2014
Priority date	Nov 16, 2011
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

An electrode active material has, as a main component, a mixture of an organic compound containing a rubeanic acid and oxamide. The rubeanic acid is represented by the following general formula:

In the formula, n indicates an integer between 1 and 20, and R1-R4 indicate hydrogen atoms, halogen atoms, or a prescribed substituent group such as a hydroxide group, a 1-3C alkyl group, an amino group, a phenyl group, a cyclohexyl group, or a sulfo group.

First claim

The invention claimed is:

1. An electrode active material for a secondary battery, the electrode active material comprising, as the main component thereof, a mixture of a rubeanic acid structure and oxamide, wherein
the rubeanic acid structure is represented by:

wherein n is an integer between 1 and 20, and R 1 -R 4 are at least any one selected from the group consisting of a hydrogen atom, a halogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group having 1 to 3 carbon atoms, a substituted or unsubstituted amino group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted cyclohexyl group and a substituted or unsubstituted sulfo group;

the oxamide is represented by:

 and
a content of the oxamide in the mixture is 0.1% to 10% by mass.

2. The electrode active material according to claim 1 , wherein R1-R4 are the same.

3. The electrode active material according to claim 2 , wherein R1-R4 are linked together to form a saturated or unsaturated ring.

4. The electrode active material according to claim 1 , wherein R1-R4 are linked together to form a saturated or unsaturated ring.

5. The electrode active material according to claim 1 , wherein the rubeanic acid structure is selected from the group consisting of:

6. An electrode comprising:
the electrode active material according to claim 1 ; and
a conductive material.

7. The electrode according to claim 6 , wherein R 1 -R 4 are the same.

8. The electrode according to claim 7 , wherein R 1 -R 4 are linked together to form a saturated or unsaturated ring.

9. The electrode according to claim 6 , wherein R 1 -R 4 are linked together to form a saturated or unsaturated ring.

10. A secondary battery, wherein the electrode active material according to claim 1 is contained in any one of a reaction starting material, a reaction product and an intermediate product in at least a discharge reaction of an electrode reaction in the battery.

11. A secondary battery comprising:
a positive electrode;
a negative electrode; and
an electrolyte,
wherein the positive electrode comprises the electrode active material according to claim 1 .

Assignees

• Murata Manufacturing Co
• Honda Motor Co Ltd

Inventors

• Sato Masaharu
• Onoue Tomoaki
• Mita Masanori
• Mokudai Hidehisa
• Sukigara Toru

Classifications

• H01M4/137

  Electrodes based on electro-active polymers · CPC title

• H01M4/60

  of organic compounds · CPC title

• H01M4/625

  Carbon or graphite · CPC title

• H01M4/364 Primary

  as mixtures · CPC title

• H01M4/602

  Polymers · CPC title