Patent ID: 6665171
Filing Date: 2003-12-16
Classification: H01G,H01M,Y02E

Abstract:
An electrochemical capacitor comprising a pair of oxidation-reduction active electrodes with an electrolyte or an ionic conductive solid electrolyte sandwiched between said oxidation-reduction active electrodes, wherein said oxidation-reduction active electrode contains a copolymer expressed by a chemical formula 1; wherein the chemical formula 1 is shown as:Raâ€”(C2Rc4)lâ€”(OC2Rd4)mâ€”(X)nâ€”Rb, or Raâ€”[â€”(C2Rc4)lâ€”(OC2Rd4)mâ€”(X)nâ€”]pâ€”Rbâ€ƒâ€ƒ(Chemical Formula 1) , where Ra and Rb are, respectively, hydrogen, fluorine, an alkyl group with 1 to 15 of carbon, a fluoroalkyl group, an alkenyl group and a fluoroalkenyl group, or a phenyl group, a fluorophenyl group, a sulfone group, an amino group, a nitro group and a cyano group, and Ra and Rb are allowed to be the same with or different from each other; andRc and Rd are selected from hydrogen, fluorine, an alkyl group with 1 to 15 of carbon, a fluoroalkyl group, an alkenyl group and a fluoroalkenyl group, or a phenyl group, a fluorophenyl group, a sulfone group, an amino group, a nitro group and a cyano group, or a chemical formula A, and said respective four Rc and Rd are allowed to be the same with or different from one another; and the chemical formula A is described by a general expression as follows: â€”(CO)ORe, â€”(CH2)Raâ€”(OC2Rb4)bâ€”ORe , where Re is hydrogen or an alkyl group, and â€œaâ€  and â€œbâ€  are integers of 0 to 20 and allowed to be the same with or different from each other;in the chemical formula 1, â€œlâ€  and â€œmâ€  are integers of 0 or larger and not 0 simultaneously, and â€œnâ€  and â€œpâ€  are natural numbers of 1 or larger; X is any one species, or two or more species out of chemical species described by a general expression as follows: R1 to R6 are, respectively, hydrogen, fluorine, an alkyl group with 1 to 20 of carbon, which is allowed to be replaced with a hydroxyl group, a fluoroalkyl group, an alkenyl group and a fluoroalkenyl group, or a phenyl group, a fluorophenyl group, a sulfon group, an amino group, a nitro group and a cyano group with part or all thereof being allowed to be linked with one another to form rings; and R1 to R6 are allowed to be the same with or different from one another.