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US4576883A
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Cathode composition and method for solid state lithium battery
Assignee: NORSONS INTERNATIONAL LLC
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Filing: 1985-05-02
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Granted: 1986-03-18
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Expires: 2005-05-02
Abstract
Abstract A cathode for a solid-state lithium battery comprising a layer of polymer spheres. Each polymer sphere consists of a vanadium oxide core encapsulated in an ionically and electronically conductive polymeric material.
Inventors
- 👤 Henry F. Hope
- 👤 Stephen F. Hope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:19
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; H01M6/00; H01M6/14; H01M6/18; H01M6/181; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
58 words
In a solid-state lithium battery of the type comprising a lithium or lithium/aluminum anode, a polymeric electrolyte, and a cathode based on vanadium oxide, the improvement comprising: a cathode comprising a multiplicity of spheres, each sphere consisting of a vanadium oxide core encapsulated in a polymer film, said polymer film containing an inorganic salt and an activated carbon.
Claim 2
Dependent Claim
58 words
In a solid-state lithium battery of the type comprising a lithium or lithium/aluminum anode, a polymeric electrolyte, and a cathode based on vanadium oxide, the improvement comprising: a cathode comprising a multiplicity of spheres, each sphere consisting of a vanadium oxide core encapsulated in a polymer film, said polymer film containing an inorganic salt and an activated carbon.
Claim 3
Dependent Claim
16 words
The battery as set forth in claim 1 wherein said polymer film consists of polyethylene oxide.
Claim 4
Dependent Claim
32 words
The battery as set forth in claim 2, wherein said inorganic salt is selected from the group consisting of LiC1O 4 , NaC1O 4 , LiF3CSO 3 , and LiBF 4 .
Claim 5
Dependent Claim
29 words
The battery as set forth in claim 2 wherein said spheres are prepared by emulsifying vanadium oxide powder in an organic solvent using said polyethylene oxide as a binder.
Claim 6
Dependent Claim
19 words
The battery set forth in claim 1 wherein the cathode consists of approximately 50% by volume of vanadium oxide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-17 | 1989-09-16 | 1990-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-17 | 1993-09-16 | 1994-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-17 | 1997-09-16 | 1998-03-18 | $7700.00 | Window Closed / Lapsed |