US4753715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of electrically conducting organic polymer compounds as thick film electrode materials for rechargeable galvanic elements
Assignee: VARTA Batterie AG
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Filing: 1987-07-24
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Granted: 1988-06-28
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Expires: 2007-07-24
Abstract
Abstract In the electropolymerization of monomers, especially pyrrole, thiophene or furan, conducting polymer films with high surface-specific capacity and favorable kinetics can be deposited for use as electrode materials in galvanic storage batteries, despite their relatively large film thickness, by impressing the selected deposition primary current i 1 with at least one short current impulse having a magnitude i 2 which is several times that of the primary current. This current impulse also sharply increases the deposition potential η 1 corresponding to the primary current i 1 .
Inventors
- 👤 Rainer Bittihn
- 👤 Friedrich Woeffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:32
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; H01M4/0438; H01M4/0464; H01M4/0466; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; H01M4/36; H01M4/60; H01M4/602; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
82 words
A process for producing electrically conducting organic polymer compounds of polyconjugated structure for use as electrode materials in rechargeable galvanic elements, which are deposited as films on an electronically conducting surface by primary anodic current from an aqueous or organic solution of the monomer in the presence of conducting salts, comprising the step of: superimposing on the primary current at least one current impulse having a magnitude which is a multiple of the magnitude of the primary current selected for the deposition.
Claim 2
Dependent Claim
82 words
A process for producing electrically conducting organic polymer compounds of polyconjugated structure for use as electrode materials in rechargeable galvanic elements, which are deposited as films on an electronically conducting surface by primary anodic current from an aqueous or organic solution of the monomer in the presence of conducting salts, comprising the step of: superimposing on the primary current at least one current impulse having a magnitude which is a multiple of the magnitude of the primary current selected for the deposition.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein the polymer deposition begins with a current impulse.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein a succession of current impulses are applied to the primary current.
Claim 5
Dependent Claim
21 words
The process of claim 3 wherein said succession of current impulses are applied to the primary current at periodic time intervals.
Claim 6
Dependent Claim
23 words
The process of claim 3 wherein another current impulse is applied to the primary current when the potential at the deposition anode rises.
Claim 7
Dependent Claim
17 words
The process of claim 1 wherein the duration of the current impulse is in the minute range.
Claim 8
Dependent Claim
12 words
The process of claim 6 wherein the duration is about one minute.
Claim 9
Dependent Claim
25 words
The process of claim 1 wherein the magnitude of the current impulse is at least twice as great as the magnitude of the primary current.
Claim 10
Dependent Claim
23 words
The process of claim 8 wherein the magnitude of the current impulse is eight to twelve times the magnitude of the primary current.
Claim 11
Dependent Claim
20 words
The process of claim 1 wherein the polymer compound is selected from the group consisting of polypyrrole, polythiophene and polyfuran.
Claim 12
Dependent Claim
16 words
The process of claim 1 wherein the primary current and the current impulse are galvanostatically controlled.
Claim 13
Dependent Claim
16 words
The process of claim 1 wherein the primary current and the current impulse are potentiostatically controlled.
References Cited (Backward Citations)
US3697398A
Cited
US4180442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-28 | 1991-12-28 | 1992-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-28 | 1995-12-28 | 1996-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-28 | 1999-12-28 | 2000-06-28 | $7700.00 | Window Closed / Lapsed |