Electrode active material , electrode and secondary battery

Patent metadata

Field	Value
Publication number	US-9601778-B2
Application number	US-201414279381-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 cyanomethanesulfonylamide. The rubeanic acid is represented by the following general formula:

In the formula, n indicates an integer between 1 and 20, and R 1 -R 4 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 an organic compound containing a rubeanic acid structure and cyanomethanesulfonylamide.

2. The electrode active material according to claim 1 , wherein the organic compound 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.

3. The electrode active material according to claim 2 , wherein R 1 -R 4 are the same.

4. The electrode active material according to claim 3 , wherein R 1 -R 4 are linked together to form a saturated or unsaturated ring.

5. The electrode active material according to claim 2 , wherein R 1 -R 4 are linked together to form a saturated or unsaturated ring.

6. The electrode active material according to claim 1 , wherein a content of the cyanomethanesulfonylamide in the mixture is 0.1% by mass or more.

7. The electrode active material according to claim 6 , wherein a content of the cyanomethanesulfonylamide in the mixture is 10% by mass or less.

8. The electrode active material according to claim 1 , wherein the organic compound is selected from the group consisting of:

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

10. The electrode according to claim 9 , wherein the organic compound 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.

11. The electrode according to claim 10 , wherein R 1 -R 4 are the same.

12. The electrode according to claim 11 , wherein R 1 -R 4 are linked together to form a saturated or unsaturated ring.

13. The electrode according to claim 10 , wherein R 1 -R 4 are linked together to form a saturated or unsaturated ring.

14. The electrode according to claim 9 , wherein a content of the cyanomethanesulfonylamide in the mixture is 0.1% by mass or more.

15. The electrode according to claim 14 , wherein a content of the cyanomethanesulfonylamide in the mixture is 10% by mass or less.

16. 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.

17. 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 .

18. The secondary battery according to claim 17 , wherein the organic compound 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.

19. The secondary battery according to claim 17 , wherein the organic compound is selected from the group consisting of:

20. The secondary battery according to claim 17 , wherein a content of the cyanomethanesulfonylamide in the mixture is 0.1% by mass or more and 10% by mass or less.

Assignees

• Murata Manufacturing Co
• Honda Motor Co Ltd

Inventors

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

Classifications

• H01M4/625 Primary

  Carbon or graphite · CPC title

• H01M4/602

  Polymers · CPC title

• H01M4/60

  of organic compounds · CPC title

• H01M4/137

  Electrodes based on electro-active polymers · CPC title

• H01M10/052

  Li-accumulators · CPC title