Patent US4472489A successfully refreshed from Google Patents.
US4472489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric electrode coated with reaction product or organosulfur compound
Assignee: Honeywell International Inc
•
Filing: 1983-11-30
•
Granted: 1984-09-18
•
Expires: 2003-11-30
Abstract
Abstract Conjugated backbone polymer electrodes such as polyacetylene anodes are coated with the reaction product of the reduced polymer with a sultone or sulfonate. Such coating may have occurred by using a sultone such as propane sultone in the electrolyte of a battery with such an anode, or in electrode preparation. The coating improves the stability of the electrode, especially when the polymer is highly reduced during battery use, whether the sultone remains as all or part of the electrolyte, or the sultone is replaced by a solvent such as propylene carbonate in the electrolyte for the battery containing coated electrode.
Inventors
- 👤 MacRae Maxfield
- 👤 Lawrence W. Shacklette
- 👤 James F. Wolf
- 👤 Suzanne M. Savner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:44
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
161 words
A polymeric electrode comprising a conjugated backbone polymer as electroactive material and a surface coating which is the product of reaction between a reduced conjugated backbone polymer and an organic compound selected from the group consisting of sultones of the formula ##STR8## wherein R is alkylene of 2-12 carbons or alkoxy-substituted alkylene of 2-12 carbons or fused polycyclic of 9-20 carbons and other ring atoms, forming with sulfur and oxygen a heterocyclic ring of 4-7 atoms and sulfonates of the formula ##STR9## wherein R" is alkyl of 1-12 carbons, aryl, or alkyl-substituted aryl; and R' is unsubstituted alkyl of 1-12 carbons or is such alkyl substituted by alkoxy, aryl, alkylaryl, aromatic heterocycle, non-aromatic unsaturated heterocyclic or saturated heterocycle, or is H((CH 2 ) p --O) q --(CH 2 ) m where m is an integer of 1-3, p is an integer of 1-3 and q is an integer of 1-20, or is ##STR10## with m, p and q as defined above.
Claim 2
Dependent Claim
161 words
A polymeric electrode comprising a conjugated backbone polymer as electroactive material and a surface coating which is the product of reaction between a reduced conjugated backbone polymer and an organic compound selected from the group consisting of sultones of the formula ##STR8## wherein R is alkylene of 2-12 carbons or alkoxy-substituted alkylene of 2-12 carbons or fused polycyclic of 9-20 carbons and other ring atoms, forming with sulfur and oxygen a heterocyclic ring of 4-7 atoms and sulfonates of the formula ##STR9## wherein R" is alkyl of 1-12 carbons, aryl, or alkyl-substituted aryl; and R' is unsubstituted alkyl of 1-12 carbons or is such alkyl substituted by alkoxy, aryl, alkylaryl, aromatic heterocycle, non-aromatic unsaturated heterocyclic or saturated heterocycle, or is H((CH 2 ) p --O) q --(CH 2 ) m where m is an integer of 1-3, p is an integer of 1-3 and q is an integer of 1-20, or is ##STR10## with m, p and q as defined above.
Claim 3
Dependent Claim
13 words
The polymeric electrode of claim 1 wherein said organic compound is a sultone.
Claim 4
Dependent Claim
22 words
The polymeric electrode of claim 2 wherein R is (CH 2 ) n with n being an integer of 3 to 5.
Claim 5
Dependent Claim
10 words
The polymeric electrode of claim 3 wherein n is 3.
Claim 6
Dependent Claim
10 words
The polymeric electrode of claim 3 wherein n is 4.
Claim 7
Dependent Claim
13 words
The polymeric electrode of claim 3 wherein said conjugated backbone polymer is polyacetylene.
Claim 8
Dependent Claim
13 words
The polymeric electrode of claim 1 wherein said conjugated backbone polymer is polyacetylene.
Claim 9
Dependent Claim
13 words
The polymeric electrode of claim 1 wherein said conjugated backbone polymer is poly(p-phenylene).
Claim 10
Dependent Claim
18 words
A battery comprising at least two electrodes, at least one of which is the electrode of claim 1.
Claim 11
Dependent Claim
28 words
The battery of claim 9 wherein said polymeric battery electrode is an anode into which alkali metal or tetraalkylammonium cations are inserted during the charging of said battery.
Claim 12
Dependent Claim
12 words
The battery of claim 10 wherein said organic compound is a sultone.
Claim 13
Dependent Claim
21 words
The battery of claim 11 wherein R is (CH 2 ) n with n being an integer of 3 to 5.
Claim 14
Dependent Claim
12 words
The battery of claim 12 wherein said conjugated backbone polymer is polyacetylene.
Claim 15
Dependent Claim
12 words
The battery of claim 10 wherein said conjugated backbone polymer is polyacetylene.
Claim 16
Dependent Claim
15 words
The battery of claim 10 wherein said anode is inserted by lithium cations during charging.
Claim 17
Dependent Claim
15 words
The battery of claim 10 wherein said anode is inserted by sodium cations during charging.
Claim 18
Dependent Claim
15 words
The battery in claim 12 wherein said anode is inserted by sodium cations during charging.
References Cited (Backward Citations)
GB1216549A
Cited
US4343871A
Cited
US4321114A
Cited
US4442187A
Cited
EP0050441A1
Cited
US4401545A
Cited
US4394304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |