Permanently doped polyaniline and method thereof
First Claim
1. A process of using an electrically conducting water-insoluble polymer, in a battery itself comprising an anode, a cathode and an electrolyte, said polymer having essentially permanent self-doping properties as compared to a physical combination of polyaniline and an organic dopant having at least one sulfonic acid group, which polymer consists essentially of:
- (a) an electrically polymerized polyaniline which is chemically bonded to(b) an organic dopant, said dopant having at least one sulfonic acid functional group, as a battery cathode with zinc as the anode and zinc sulfate as the electrolyte.
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Abstract
The present invention relates to an electrically conducting polymer, the water-insoluble polymer having essentially permanent self-doping properties, and the polynmer comprises:
(a) electrically polymerized polyaniline in covalent combination with
(b) an organic dopant having at least one sulfonic acid functional group. The electrically conducting polymer-dopant is preferred wherein the organic dopant is selected from benzenesulfonic acid, toluenesulfonic acid, benzenesulfonyl chloride, dodecylbenzenesulfonic acid, poly(vinylsulfonic) acid, trifluoromethanesulfonic acid, 1-butanesulfonic acid, modified NAFION, 2,3,5-trichlorobenzenesulfonic acid, vinylphenylsulfonic acid, or the alkali metal salts thereof. In another aspect, the present invention discloses a method to produce a water-insoluble polyaniline in which an aromatic organic dopant is covalently bonded to the polyaniline, which method comprises (a) electropolymerizing aniline in an aqueous solvent which contains the organic dopant. These permanently doped polyanilines are useful as films for electric battery electrodes, and for electrochromic applications.
45 Citations
8 Claims
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1. A process of using an electrically conducting water-insoluble polymer, in a battery itself comprising an anode, a cathode and an electrolyte, said polymer having essentially permanent self-doping properties as compared to a physical combination of polyaniline and an organic dopant having at least one sulfonic acid group, which polymer consists essentially of:
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(a) an electrically polymerized polyaniline which is chemically bonded to (b) an organic dopant, said dopant having at least one sulfonic acid functional group, as a battery cathode with zinc as the anode and zinc sulfate as the electrolyte. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification