US4908284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state batteries
Assignee: JOY MINING MACHINERY Ltd
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Filing: 1988-06-14
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Granted: 1990-03-13
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Expires: 2008-06-14
Abstract
Abstract A material which is particularly suitable for use in a composite cathode and which includes a complex of a salt formed between a metal ion capable of existing in at least two stable valency states or an aluminium ion together with a suitable anion and a solid plastics polymeric composition capable of forming a donor acceptor type bond with the metal or aluminium ion, wherein the material exhibits both ionic and electronic conductivities to a substantial degree.
Inventors
- 👤 Alan Hooper
- 👤 John M. North
- 👤 Robin J. Neat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:00
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/056; H01M10/0564; H01M10/0565; H01M4/00; H01M4/02; H01M4/62; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
73 words
A material which includes a complex of a salt formed between a metal ion capable of existing in at least two stable valency states or an aluminium ion together with a suitable anion and a solid plastics polymeric composition capable of forming a donor acceptor type bond with the metal or aluminium ion, wherein the material exhibits both ionic and electronic conductivities which are of the same order of magnitude as each other.
Claim 2
Dependent Claim
73 words
A material which includes a complex of a salt formed between a metal ion capable of existing in at least two stable valency states or an aluminium ion together with a suitable anion and a solid plastics polymeric composition capable of forming a donor acceptor type bond with the metal or aluminium ion, wherein the material exhibits both ionic and electronic conductivities which are of the same order of magnitude as each other.
Claim 3
Dependent Claim
26 words
A material according to claim 1 in which the metal ion is selected from the group consisting of iron, nickel, cobalt, copper and a mixture thereof.
Claim 4
Dependent Claim
13 words
A material according to claim 2 in which the metal ion is copper.
Claim 5
Dependent Claim
17 words
A material according to claim 1 in which the anion is one of trifluoromethane sulphonate or perchlorate.
Claim 6
Dependent Claim
19 words
A material according to claim 1 in which the polymeric composition is one of polyethylene oxide and polypropylene oxide.
Claim 7
Dependent Claim
19 words
A material according to claim 5 in which the complex is formed between polyethylene oxide and copper trifluoromethane sulphonate.
Claim 8
Dependent Claim
14 words
A material according to claim 1 which also contains a lithium-ion containing polymeric substance.
Claim 9
Dependent Claim
17 words
A material according to claim 7 in which the lithium-ion containing polymeric substances is: (PEO).sub.x :LiCF.sub.3 SO.sub.3.
Claim 10
Dependent Claim
18 words
A material according to claim 8 in which a mixed complex (PEO).sub.x :LiCF.sub.3 SO.sub.3 :Cu(CF.sub.3 SO.sub.3).sub.2 is formed.
Claim 11
Dependent Claim
17 words
A composite cathode comprising the material according to claim 6 in which an active catholyte is dispersed.
Claim 12
Dependent Claim
16 words
A composite cathode according to claim 10 in which the active catholyte is a vanadium oxide.
Claim 13
Dependent Claim
19 words
An electrochemical cell comprising the composite cathode of claim 10 together with a lithium-based anode and a polymeric electrolyte.
Claim 14
Dependent Claim
74 words
A material which includes a complex of a salt formed between a metal ion capable of existing in at least two stable valency states or an aluminium ion together with a suitable anion and a solid plastics polymeric composition capable of forming a donor acceptor type bond with the metal or aluminium ion, wherein the material exhibits both ionic and electronic conductivities and said electronic conductivity is at least equal to said ionic conductivity.
Claim 15
Dependent Claim
74 words
A material which includes a complex of a salt formed between a metal ion capable of existing in at least two stable valency states or an aluminium ion together with a suitable anion and a solid plastics polymeric composition capable of forming a donor acceptor type bond with the metal or aluminium ion, wherein the material exhibits both ionic and electronic conductivities and said electronic conductivity is at least equal to said ionic conductivity.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-12 | 1993-09-11 | 1994-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-12 | 1997-09-11 | 1998-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-12 | 2001-09-11 | 2002-03-13 | $7700.00 | Window Closed / Lapsed |