Secondary battery and capacitor using indole polymeric compound

• US 7,035,084 B2
• Filed: 01/15/2002
• Issued: 04/25/2006
• Est. Priority Date: 07/22/1999
• Status: Expired due to Fees

• Current Assignee: NEC Tokin Corporation (Yageo Corporation)
• Original Assignee: NEC Corporation
• Inventors: Fujiwara, Masaki, Harada, Gaku, Kurosaki, Masato, Kaneko, Shinako, Nishiyama, Toshihiko
• Primary Examiner(s): Thomas, Eric W.
• Application Number:
  US10/044,985
• Publication Number:
  US 20020132164A1
• Time in Patent Office: 1,561 Days
• Field of Search: 361503-507, 361508-511, 361/523, 361525-528, 252/62.2
• US Class Current: 361/508
• CPC Class Codes: H01G 11/02 using combined reduction-oxidation reactions, e.g. redox arrangement or solion
• CPC Class Codes: H01G 11/48 Conductive polymers
• CPC Class Codes: H01M 10/05 Accumulators with non-aqueous electrolyte H01M10/39 takes precedence
• CPC Class Codes: H01M 10/36 Accumulators not provided for in groups H01M10/05-H01M10/34
• CPC Class Codes: H01M 2300/0011 Sulfuric acid-based
• CPC Class Codes: H01M 4/137 Electrodes based on electro-active polymers
• CPC Class Codes: H01M 4/60 of organic compounds
• CPC Class Codes: H01M 4/606 containing aromatic main chain polymers
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors

Abstract

Secondary batteries and capacitors have a high electromotive force together with a high cyclic property and are capable of fast charging and discharging, using a polymeric compound having a high stability and high reactivity in an acidic ambient, as an electrode active material. The secondary batteries and capacitors include an indole polymeric compound as an electrode active material. The polymeric compound uses a proton as a charge carrier and has a constituent represented by general formula (1):
wherein each R denotes a hydrogen atom, a halogen atom, a hydroxyl group, a carboxyl group, a sulfonic group, a sulfuric acid group, a nitro group, a cyano group, an alkyl group, an aryl group, an alkoxyl group, an amino group, an alkylthio group and an arylthio group, which may be the same or different from each other, and at least one R is a substituent other than a hydrogen atom.

Claims

1. A capacitor comprising an indole polymeric compound as an electrode active material, said indole polymeric compound using a proton as a charge carrier and having a constituent represented by general formula (1):

wherein each R denotes a hydrogen atom, a halogen atom, a hydroxyl group, a carboxyl group, a sulfonic group, a sulfuric acid group, a nitro group, a cyano group, an alkyl group, an aryl group, an alkoxyl group, an amino group, an alkylthio group and an arylthio group, which may be the same or different from each other, and at least one R is a substituent other than a hydrogen atom and a cathode containing polyphenylquinoxaline represented by structural formula (3);

2. The capacitor according to claim 1, having an indole polymeric compound electrode containing 30–

95% by weight of said indole polymeric compound.

3. The capacitor according to claim 2, having an aqueous or a nonaqueous solution of an electrolyte containing 10⁻

3 mol/l to 18 mol/ 1 of protons.

4. The capacitor according claim 2, having an aqueous or a nonaqueous solution of an electrolyte containing 10−

1 mol/l to 7 mol/l of protons.

5. The capacitor according to claim 1, having an aqueous or a nonaqueous solution of an electrolyte containing 10⁻

3 mol/l to 18 mol/l of protons.

6. The capacitor according claim 1, having an aqueous or a nonaqueous solution of an electrolyte containing 10⁻

1 mol/l to 7 mol/1 of protons.

7. A capacitor comprising an anode containing poly(6-nitroindole) represented by structural formula (2):

a separator, an electrolytic solution of 40% sulfuric acid, and a cathode containing polyaniline.

8. A capacitor comprising an indole polymeric compound as an electrode active material, said indole polymeric compound using a proton as a charge carrier and having a constituent represented by general formula (1):

wherein each R denotes a hydrogen atom, a halogen atom, a hydroxyl group, a carboxyl group, a sulfonic group, a sulfuric acid group, a nitro group, a cyano group, an alkyl group, an aryl group, an alkoxyl group, an amino group, an alkylthio group and an arylthio group, which may be the same or different from each other, and at least one R is a substituent other than a hydrogen atom and a cathode containing polyaniline.

9. The capacitor according to claim 8, further comprising an anode containing poly (6-nitroindole) represented by structural formula (2):

a separator, an electrolytic solution of 40% sulfuric acid, and a cathode containing polyaniline.

10. The capacitor according to claim 8, having an indole polymeric compound electrode containing 30–

95% by weight of said indole polymeric compound.

11. The capacitor according to claim 10, having an aqueous or a nonaqueous solution of an electrolyte containing 10−

3 mol/l to 18 mol/l of protons.

12. The capacitor according to claim 10, having an aqueous or a nonaqueous solution of an electrolyte containing 10⁻

1 mol/l to mol/l of protons.

13. The capacitor according to claim 8, having an aqueous or a nonaqueous solution of an electrolyte containing 10⁻

3 to 18 mol/1 of protons.

14. The capacitor according to claim 8, having an aqueous or a nonaqueous solution of an electrolyte containing 10−

1 mol/l to 7 mol/l of protons.