US4526708A
Expired / Lapsed
US
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Irreversible donor doping of conjugated backbone polymers
Assignee: Honeywell International Inc
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Filing: 1983-11-30
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Granted: 1985-07-02
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Expires: 2003-11-30
Abstract
Abstract Conjugated backbone polymers (e.g., polyacetylene), especially formed into a battery electrode, are contacted with a compound MR where M is an alkali metal and R is alkyl of 1-12 carbons, phenyl or alkylphenyl of 7-12 carbons. The method is particularly suited to treatment of battery electrodes to avoid a high initial internal resistance.
Inventors
- 👤 Ronald L. Elsenbaumer
- 👤 Granville G. Miller
- 👤 James E. Toth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:32
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M4/00; H01M4/02; H01M4/36; H01M4/60; H10; H10K; H10K85/00; H10K85/10; H10K85/141; H10K85/143; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
A method of introducing electrons along with alkali metal cations into polyacetylene which comprises contacting said polyacetylene with a compound of the formula MR wherein M is an alkali metal and R is selected from the group consisting of alkyls of 1-12 carbons, phenyl and alkylphenyls of 7-12 carbons, under conditions forming negatively charged polyacetylene intercalated by M + cations in an amount sufficient to produce a conductivity in said polyacetylene of at least about 10 -5 s/cm and an organic by-product not susceptible to reaction with the negatively charged polyacetylene to reform the compound MR.
Claim 2
Independent Claim
96 words
A method of introducing electrons along with alkali metal cations into polyacetylene which comprises contacting said polyacetylene with a compound of the formula MR wherein M is an alkali metal and R is selected from the group consisting of alkyls of 1-12 carbons, phenyl and alkylphenyls of 7-12 carbons, under conditions forming negatively charged polyacetylene intercalated by M + cations in an amount sufficient to produce a conductivity in said polyacetylene of at least about 10 -5 s/cm and an organic by-product not susceptible to reaction with the negatively charged polyacetylene to reform the compound MR.
Claim 3
Dependent Claim
9 words
The method of claim 1 wherein M is Li.
Claim 4
Dependent Claim
9 words
The method of claim 1 wherein M is Na.
Claim 5
Dependent Claim
9 words
The method of claim 1 wherein M is K.
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein R is alkyl of 2-4 carbons.
Claim 7
Dependent Claim
16 words
The method of claim 5 wherein said organic by-product is the alkane R--R having 4-8 carbons.
Claim 8
Dependent Claim
13 words
The method of claim 1 wherein said polyacetylene is in a battery electrode.
References Cited (Backward Citations)
US4204216A
Cited
US4321114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |