US5041346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion conductors
Assignee: UK Secretary of State for Defence
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Filing: 1988-07-14
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Granted: 1991-08-20
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Expires: 2008-07-14
Abstract
Abstract An ion conducting polymeric material characterized in that it comprises a mixture of at least three components (a), (b), and (c): (a) one or more structural materials, (b) one or more low mass plasticizers, and (c) one or more amorphous ion-solvating polymers and optionally containing (d) one or more ionic salts. Preferably the structural material is poly(ethylene oxide) and the ion-solvating polymer is an oxymethylene linked polyethylene glycol having a repeat sequence [(CH 2 CH 2 O) a CH 2 O] where a has an average value of 4 to 15.
Inventors
- 👤 Jeremy R. M. Giles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:44
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/181; C; C08; C08L; C08L71/00; C08L71/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
76 words
An ion conducting polymeric material consisting essentially of the following components: a structural material; a least one plasticizer; an ion-solvating polymer; and optionally containing at least one ionic salt, all of these components being present in admixture; wherein the structural material is poly(ethylene oxide) and the ion-solvating polymer is oxymethylene-linked polyethylene glycol having a repeat sequence (CH 2 CH 2 O) a CH 2 O in which a has an average value of 4 to 10.
Claim 2
Dependent Claim
76 words
An ion conducting polymeric material consisting essentially of the following components: a structural material; a least one plasticizer; an ion-solvating polymer; and optionally containing at least one ionic salt, all of these components being present in admixture; wherein the structural material is poly(ethylene oxide) and the ion-solvating polymer is oxymethylene-linked polyethylene glycol having a repeat sequence (CH 2 CH 2 O) a CH 2 O in which a has an average value of 4 to 10.
Claim 3
Dependent Claim
30 words
The ion conducting polymeric material as claimed in claim 1 wherein the poly(ethylene oxide) structural component has a molar mass in the range of 1×10 6 to 5×10 6 .
Claim 4
Dependent Claim
24 words
The ion conducting polymeric material as claimed in claim 1 wherein the ion-solvating polymer has an average value of a of 4 to 9.
Claim 5
Dependent Claim
29 words
The ion conducting polymeric material as claimed in claim 1 wherein the oxymethylene-linked polyethylene glycol has a molar mass in the range of 1×10 5 to 6×10 5 .
Claim 6
Dependent Claim
37 words
The ion conducting polymeric material as claimed in claim 1 containing at least one ionic salt wherein the ionic salt is a salt of a strong acid anion with a metal ion or a stable cationic complex.
Claim 7
Dependent Claim
17 words
The ion conducting polymeric material as claimed in claim 5 containing at least one ionic lithium salt.
Claim 8
Dependent Claim
35 words
The ion conducting polymeric material as claimed in claim 6 wherein the lithium salt is selected from the group consisting of LiCF 3 SO 3 , LiPF 6 , LiClO 4 or LiAsF 6 .
Claim 9
Dependent Claim
26 words
An electrolytic cell comprising an anode and a cathode with an electrolyte interposed therebetween, wherein the electrolyte is the polymeric material as claimed in claim 1.
Claim 10
Dependent Claim
13 words
A battery consisting of a plurality of cells as claimed in claim 8.
References Cited (Backward Citations)
EP0078505A1
Cited
US4471037A
Cited
FR2568574A1
Cited
GB2164047A
Cited
US4840856A
Cited
US4886716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |