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To provide a capacitor capable of utilizing carbon nanotube characteristics effectively to obtain excellent electric or mechanical characteristics, and a method of manufacturing the same. The capacitor is characterized by including two opposing electrodes, at least one of the two electrodes being fo

To provide a capacitor capable of utilizing carbon nanotube characteristics effectively to obtain excellent electric or mechanical characteristics, and a method of manufacturing the same. The capacitor is characterized by including two opposing electrodes, at least one of the two electrodes being formed from a coating film of a carbon nanotube structure in which plural carbon nanotubes with functional groups bonded constitute a mesh structure by cross-linking the functional groups through chemical bonding. The method of manufacturing a capacitor includes: a coating step for coating a surface of a base body with a solution that contains plural carbon nanotubes with functional groups bonded; and a cross-linking step for forming a carbon nanotube structure layer in which the functional groups are chemically bonded to one another, thereby causing the carbon nanotubes to cross-link to one another and build a mesh structure.

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1. A capacitor comprising two opposing electrodes, at least one of the two electrodes being formed from a coating film of a carbon nanotube structure in which plural carbon nanotubes with functional groups bonded constitute a mesh structure by cross-linking the functional groups through chemical bon

1. A capacitor comprising two opposing electrodes, at least one of the two electrodes being formed from a coating film of a carbon nanotube structure in which plural carbon nanotubes with functional groups bonded constitute a mesh structure by cross-linking the functional groups through chemical bonding.2. A capacitor according to claim 1, wherein the carbon nanotube structure is manufactured by curing a solution containing plural carbon nanotubes to which functional groups are bonded, and by chemically bonding the plural functional groups bonded to the carbon nanotubes to form a cross-linked site.3. A capacitor according to claim 2, wherein the cross-linked site is structured by cross-linking the plural functional groups with a cross-linking agent in the solution, and the cross-linking agent is not self-polymerizable.4. A capacitor according to claim 1, wherein the cross-linked site where plural carbon nanotubes mutually cross-link has a chemical structure selected from the group consisting of ?COO(CH2)2OCO?, ?COOCH2CHOHCH2OCO?, ?COOCH2CH(OCO?)CH2OH, and ?COOCH2CH(OCO?)CH2OCO?.5. A capacitor according to claim 2, wherein the cross-linked site is formed through chemical bonding of the plural functional groups.6. A capacitor according to claim 5, wherein a reaction forming the chemical bonding is selected from the group consisting of dehydration condensation, a substitution reaction, an addition reaction, and an oxidative reaction.7. A capacitor according to claim 1, wherein the cross-linked site where plural carbon nanotubes mutually cross-link has a chemical structure selected from the group consisting of ?COOCO?, ?O?, ?NHCO?, ?COO?, ?NCH?, ?NH?, ?S?, ?O?, ?NHCOO?, and ?S?S?.8. A capacitor according to claim 1, wherein the plural carbon nanotubes are multi-wall carbon nanotubes.9. A method of manufacturing a capacitor that has two opposing electrodes comprising:a coating step for coating a surface of a base body with a solution that contains plural carbon nanotubes with functional groups bonded; and a cross-linking step for forming a carbon nanotube structure layer in which the functional groups are chemically bonded to one another, thereby causing the carbon nanotubes to cross-link to one another and build a mesh structure, wherein the carbon nanotube structure layer constitutes one or both of the opposing electrodes. 10. A method of manufacturing a capacitor according to claim 9, wherein:the solution contains a cross-linking agent that cross-links the plural functional groups together; and the cross-linking agent is not self-polymerizable. 11. A method of manufacturing a capacitor according to claim 10, wherein:each of the functional groups is selected from the group consisting of ?OH, ?COOH, ?COOR (where R represents a substituted or unsubstituted hydrocarbon group), ?COX (where X represents a halogen atom), ?NH2, and ?NCO; and the cross-linking agent is capable of prompting a cross-linking reaction with the selected functional groups. 12. A method of manufacturing a capacitor according to claim 10, wherein:the cross-linking agent is selected from the group consisting of a polyol, a polyamine, a polycarboxylic acid, a polycarboxylate, a polycarboxylic acid halide, a polycarbodiimide, and a polyisocyanate; and each of the functional groups is capable of prompting a cross-linking reaction with the selected cross-linking agent. 13. A method of manufacturing a capacitor according to claim 10, wherein:each of the functional groups is selected from the group consisting of ?OH, ?COOH, ?COOR (where R represents a substituted or unsubstituted hydrocarbon group), ?COX (where X represents a halogen atom), ?NH2, and ?NCO; the cross-linking agent is selected from the group consisting of a polyol, a polyamine, a polycarboxylic acid, a polycarboxylate, a polycarboxylic acid halide, a polycarbodiimide, and a polyisocyanate; and the functional groups and the cross-linking agent are respectively selected for a combination capable of prompting a mutual cross-linking reaction. 14. A method of manufacturing a capacitor according to claim 11, wherein each of the functional groups is ?COOR (where R represents a substituted or unsubstituted hydrocarbon group).15. A method of manufacturing a capacitor according to claim 14, wherein the cross-linking agent is a polyol.16. A method of manufacturing a capacitor according to claim 14, wherein the cross-linking agent is selected from the group consisting of glycerin, ethylene glycol, butenediol, hexynediol, hydroquinone, and naphthalenediol.17. A method of manufacturing a capacitor according to claim 9, wherein the solution further contains a solvent.18. A method of manufacturing a capacitor according to claim 17, wherein the cross-linking agent also functions as a solvent.19. A method of manufacturing a capacitor according to claim 9, wherein a reaction forming the chemical bonding is a reaction for chemically bonding the plural functional groups.20. A method of manufacturing a capacitor according to claim 19, wherein the solution further contains an additive that chemically bonds the plural functional groups.21. A method of manufacturing a capacitor according to claim 20, wherein the reaction is dehydration condensation and the additive is a condensation agent.22. A method of manufacturing a capacitor according to claim 21, wherein each of the functional groups is selected from the group consisting of ?COOR (where R represents a substituted or unsubstituted hydrocarbon group), ?COOH, ?COX (where X represents a halogen atom), ?OH, ?CHO?, and ?NH2.23. A method of manufacturing a capacitor according to claim 22, wherein each of the functional groups is ?COOH.24. A method of manufacturing a capacitor according to claim 21, wherein the condensation agent is selected from the group consisting of sulfuric acid, N-ethyl-N′-(3-dimethylaminopropyl)carbodiimide, and dicyclohexyl carbodiimide.25. A method of manufacturing a capacitor according to claim 20, wherein the reaction is a substitution reaction and the additive is a base.26. A method of manufacturing a capacitor according to claim 25, wherein each of the functional groups is selected from the group consisting of ?NH2, ?X (where X represents a halogen atom), ?SH, ?OH, ?OSO2CH3, and ?OSO2(C6H4)CH3.27. A method of manufacturing a capacitor according to claim 25, wherein the base is selected from the group consisting of sodium hydroxide, potassium hydroxide, pyridine, and sodium ethoxide.28. A method of manufacturing a capacitor according to claim 19, wherein the reaction is an addition reaction.29. A method of manufacturing a capacitor according to claim 28, wherein each of the functional groups is selected from the group consisting of ?OH and ?NCO.30. A method of manufacturing a capacitor according to claim 19, wherein the reaction is an oxidative reaction.31. A method of manufacturing a capacitor according to claim 30, wherein each of the functional groups is ?SH.32. A method of manufacturing a capacitor according to claim 30, wherein the solution further contains an oxidative reaction accelerator.33. A method of manufacturing a capacitor according to claim 32, wherein the oxidative reaction accelerator is iodine.