EP0208254A2
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EP
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Secondary battery
Assignee: Hitachi Ltd
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Filing: 1986-07-02
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Granted: —
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Expires: 2006-07-02
Abstract
Abstract Disclosed is a non-aqueous secondary battery having a positive electrode composed of a polymer of aniline or an aniline derivative and a negative electrode composed of (i) and alkali metal, (ii) an alkali metal alloy, (iii) an electroconductive polymer or (iv) an alkali metal or alkali metal alloy/electroconductive polymer composite, wherein the polymer of aniline or an aniline derivative is formed by converting a doped polymer obtained by oxidative polymerization to an undoped state.
Inventors
- 👤 Yukio Kobayashi
- 👤 Toshikazu Shishikura
- 👤 Hiroshi Konuma
- 👤 Toshiyuki Sakai
- 👤 Hidenori Nakamura
- 👤 Masataka Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 19:26
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; C; C08; C08G; C08G73/00; C08G73/02; C08G73/026; C08G73/0266; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128; H01M4/13; H01M4/134; H01M4/137; H01M4/139; H01M4/1399; H01M10/00; H01M10/05; H01M10/052; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
72 words
A non-aqueous secondary battery comprising a positive electrode composed of a polymer of aniline or an aniline derivative and a negative electrode composed of (i) an alkali metal, (ii) an alkali metal alloy, (iii) an electroconductive polymer or (iv) an alkali metal or alkali metal alloy/electroconductive polymer composite, wherein the polymer of aniline or an aniline derivative is formed by converting a doped polymer obtained by oxidative polymerization to an undoped state.
Claim 2
Dependent Claim
72 words
A non-aqueous secondary battery comprising a positive electrode composed of a polymer of aniline or an aniline derivative and a negative electrode composed of (i) an alkali metal, (ii) an alkali metal alloy, (iii) an electroconductive polymer or (iv) an alkali metal or alkali metal alloy/electroconductive polymer composite, wherein the polymer of aniline or an aniline derivative is formed by converting a doped polymer obtained by oxidative polymerization to an undoped state.
Claim 3
Dependent Claim
91 words
A secondary battery as set forth in claim 1, wherein the polymer of aniline or an aniline derivative is a homopolymer of a compound represented by the following general formula (1) or (2) or a copolymer comprising at least 50 mole% of units derived from a compound represented by the following general formula (1) or (2): wherein R₁ through R₆ independently represent a hydrogen atom or an alkyl group or alkoxy group having 1 to 5 carbon atoms, and X and Y independently represent a hydrogen atom or a phenyl group.
Claim 4
Dependent Claim
131 words
A secondary battery as set forth in claim 1 or 2, wherein the doped polymer of aniline or an aniline derivative is obtained by subjecting aniline or an aniline derivative to electrochemical oxidative polymerization in a solvent capable of dissolving aniline or the aniline derivative therein at a current density of 0.01 to 50 mA/cm² and an electric field voltage of 1 to 300 V in the presence of a complexing agent represented by the following general formula: M⁺A⁻ wherein M⁺ is a cation selected from the group consisting of a proton, a quaternary ammonium cation, a lithium cation, a sodium cation and a potassium cation and A⁻ is an anion selected from the group consisting of BF₄⁻, AsF₄⁻, AsF₆⁻, SbF₆⁻, SbCl₆⁻, PF₆⁻, ClO₄⁻, HSO₄⁻, HSO₄⁻, SO₄²⁻, Cl⁻, Br⁻, and F⁻.
Claim 5
Dependent Claim
59 words
A secondary battery as set forth in claim 1 or 2, wherein the polymer of aniline or an aniline derivative is obtained by subjecting aniline or an aniline derivative to chemical oxidative polymerizative in the presence of a strong acid exerting an oxidative action in the water-dissolved state or in the presence of a strong acid and an oxidant.
Claim 6
Dependent Claim
58 words
A secondary battery as set forth in any of claims 1 to 4, wherein the doped polymer is converted to an undoped state by at least one treatment selected from the group consisting of (i) a treatment with an aqueous solution of an alkali, (ii) an electrochemical reduction treatment and (iii) a heat treatment at 100 to 300°C.
Claim 7
Dependent Claim
41 words
A secondary battery as set forth in any of claims 1 to 5, wherein the doped polymer is converted to an undoped state by electrochemically reducing the doped polymer and then treating the polymer with an aqueous solution of an alkali.
Claim 8
Dependent Claim
44 words
A secondary battery as set forth in any of claims 1 to 5, wherein the doped polymer is converted to an undoped state by treating the doped polymer with an aqueous solution of an alkali and then heat-treating the polymer at 100 to 300°C.
Claim 9
Dependent Claim
33 words
A secondary battery as set forth in any of claims 5 to 7, wherein the alkali is selected from the group consisting of alkali metal hydroxides, alkaline earth metal hydroxides, ammonia and amines.
Claim 10
Dependent Claim
170 words
A secondary battery as set forth in any of claims 1 to 3, wherein the doped polymer obtained by electrochemical oxidative polymerization is converted to an undoped state by a method selected from the group consisting of (i) a method in which the obtained polymer is directly electrochemically reduced in the liquid used for the electrolytic polymerization, (ii) a method in which the obtained polymer is transferred into a neutral or acidic solution containing other ionic electroconductive electrolyte, and the polymer is electrochemically reduced, (iii) a method in which the obtained polymer is molded in the form of an electrode, the molded electrode is combined with a collector and the polymer of the molded electrode is electrochemically reduced in a solution of an ionic electroconductive electrolyte and (iv) a method in which the polymer is not molded, a collecting substrate is inserted in an electrolytic solution having a specific gravity smaller than that of the polymer and the polymer is brought into contact with the substrate to effect electrochemical reduction.
Claim 11
Dependent Claim
115 words
A secondary battery as set forth in any of claims 1 to 4, wherein the doped polymer obtained by chemical oxidative polymerization is converted to an undoped state by (iii) a method in which the obtained polymer is molded in the form of an electrode, the molded electrode is combined with a collector and the polymer of the molded electrode is electrochemically reduced in a solution of an ionic electroconductive electrolyte or (iv) a method in which the polymer is not molded, a collecting substrate is inserted in an electrolytic solution having a specific gravity smaller than that of the polymer and the polymer is brought into contact with the substrate to effect electrochemical reduction.
Claim 12
Dependent Claim
27 words
A secondary battery as set forth in any of claims 1 to 10, wherein the heat treatment is carried out in an inert gas or in vacuum.
Claim 13
Dependent Claim
48 words
A secondary battery as set forth in any of claims 1 to 11, wherein the polymer of aniline or an aniline derivative is one prepared by converting a doped polymer obtained by oxidative polymerization to an undoped state and then complexing the undoped polymer with a protonic acid.
Claim 14
Dependent Claim
51 words
A secondary battery as set forth in claim 12, wherein the polymer converted to an undoped state is washed with an electrolytic solution used for formation of the secondary battery or is washed or extracted with an organic solvent to remove soluble components, before or after complexing with the protonic acid.
Claim 15
Dependent Claim
83 words
A secondary battery as set forth in claim 12, wherein the complexing is accomplished bv immersing the polymer in an aqueous solution of a protonic acid containing an anion selected from the group consisting of a halogen anion, an anion of a halide of an element of the Group IIIa of the Periodic Table, an anion of a halide of an element of the Group Va of the Periodic Table, ClO₄⁻, HSO₄⁻ and SO₂²⁻, which has a pH value not larger than 3.
Claim 16
Dependent Claim
30 words
A secondary battery as set forth in any of claims 1 to 14, wherein a supporting electrolyte of an electrolytic solution of the secondary battery is an alkali metal salt.
References Cited (Backward Citations)
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