NITROGEN-CONTAINING POROUS CARBON MATERIAL AND METHOD OF PRODUCING THE SAME, AND ELECTRIC DOUBLE-LAYER CAPACITOR USING THE NITROGEN-CONTAINING POROUS CARBON MATERIAL

• US 20120241691A1
• Filed: 11/26/2010
• Published: 09/27/2012
• Est. Priority Date: 11/30/2009
• Status: Active Grant

• Current Assignee: National Institute of Advanced Industrial Science and Technology (Government of Japan), TOYO Tanso Company Limited
• Original Assignee: TOYO Tanso Company Limited
• Inventors: Morishita, Takahiro, Soneda, Yasushi, Kodama, Masaya
• Granted Patent: US 9,281,135 B2
• Time in Patent Office: Days
• US Class Current: 252/511
• CPC Class Codes: C01B 21/0605 Binary compounds of nitrogen with carbon
• CPC Class Codes: C01B 32/05 Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
• CPC Class Codes: C01P 2006/12 Surface area
• CPC Class Codes: H01G 11/32 Carbon-based
• CPC Class Codes: H01G 11/34 characterised by carbonisation or activation of carbon
• CPC Class Codes: H01G 11/44 Raw materials therefor, e.g. resins or coal
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors

Abstract

A nitrogen-containing carbon porous material, which has a nitrogen content of 0.5 to 30 mass %, and which has a specific surface area of 200 to 3,000 m²/g.

Claims

1-7. -7. (canceled)

8. A nitrogen-containing carbon porous material, which has a nitrogen content of 0.5 to 30 mass %, and which has a specific surface area of 200 to 3,000 m²/g.

9. The nitrogen-containing carbon porous material according to claim 8, which is obtained by mixing a melamine and magnesium citrate, heating the resultant mixture to 700°

C. or more under an inert atmosphere, followed by cooling and washing with an acid.

10. An electrode material for an electric double-layer capacitor, which is formed by binding the nitrogen-containing carbon porous material according to claim 8 with a binder resin.

11. An electric double-layer capacitor, which is formed with the electrode material for an electric double-layer capacitor according to claim 10 in an electrode.

12. An electrode material for an electric double-layer capacitor, which is formed by binding the nitrogen-containing carbon porous material according to claim 9 with a binder resin.

13. An electric double-layer capacitor, which is formed with the electrode material for an electric double-layer capacitor according to claim 12 in an electrode.

14. A method of producing a nitrogen-containing carbon porous material, comprising the steps of:

mixing a melamine and magnesium citrate;

heating the resultant mixture to 700°

C. or more under an inert atmosphere;

cooling; and

washing with an acid.

15. The method of producing a nitrogen-containing carbon porous material according to claim 14, wherein a retention time period at 700°

C. or more is from 1 to 5,000 min.

16. The method of producing a nitrogen-containing carbon porous material according to claim 14, wherein a temperature rising speed to a retention temperature of 700°

C. or more is from 1 to 100°

C./min.

17. The method of producing a nitrogen-containing carbon porous material according to claim 16, wherein a retention time period at 700°

C. or more is from 1 to 5,000 min.