US4886715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molten membrane electrolyte battery
Assignee: Dow Chemical Co
•
Filing: 1988-09-28
•
Granted: 1989-12-12
•
Expires: 2008-09-28
Abstract
Abstract A primary rechargeable electrical energy storage device comprising a housing having an electrically non-conductive interior surface, at least one cell positioned in said housing, each cell comprising an anode consisting of a low melting metal selected from the group consisting of alkali metal, alkali metal alloy and alkali metal eutectic mixture, a separator surrounding said anode, said separator being capable of transporting ionic species and electrically isolating said anode, a cathode comprising a carbonaceous graphite cloth, and a non-aqueous electrolyte.
Inventors
- 👤 Francis P. McCullough, Jr.
- 👤 Robert A. Cipriano
- 👤 R. Vernon Snelgrove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:03
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M4/00; H01M4/02; H01M4/13; H01M2004/026; H01M2004/027; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M2300/0065; H01M6/00; H01M6/14; H01M6/16; H01M6/162; H01M6/166; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
A primary rechargeable electrical energy storage device comprising a housing having an electrically non-conductive interior surface, at least one cell positioned in said housing, each cell comprising an anode consisting of a low melting metal selected from the group consisting of alkaline earth metal, alkaline earth metal alloys, alkali metal, alkali metal alloy and alkali metal eutectic mixtures thereof, a separator surrounding said anode, said separator being capable of transporting or passing ionic species and electrically isolating said anode, a cathode comprising a carbonaceous fibrous structure, and a non-aqueous lithium laurate membrane electrolyte associated with said cathode.
Claim 2
Dependent Claim
97 words
A primary rechargeable electrical energy storage device comprising a housing having an electrically non-conductive interior surface, at least one cell positioned in said housing, each cell comprising an anode consisting of a low melting metal selected from the group consisting of alkaline earth metal, alkaline earth metal alloys, alkali metal, alkali metal alloy and alkali metal eutectic mixtures thereof, a separator surrounding said anode, said separator being capable of transporting or passing ionic species and electrically isolating said anode, a cathode comprising a carbonaceous fibrous structure, and a non-aqueous lithium laurate membrane electrolyte associated with said cathode.
Claim 3
Dependent Claim
16 words
The electrical storage device of claim 1 including a current collector in contact with said cathode.
Claim 4
Dependent Claim
15 words
The electrical storage device of claim 2 wherein said current collector is comprised of metal.
Claim 5
Dependent Claim
13 words
The electrical storage device of claim 3 wherein said current collector is polymeric.
Claim 6
Dependent Claim
14 words
The electrical storage device of claim 1 wherein said anode comprises an alkali metal.
Claim 7
Dependent Claim
15 words
The electrical storage device of claim 5 wherein said alkali metal is lithium or sodium.
Claim 8
Dependent Claim
14 words
The electrical storage device of claim 1 wherein said cathode comprises a graphite fabric.
Claim 9
Dependent Claim
14 words
The electrical storage device of claim 7 wherein said separator is a cationic polymer.
Claim 10
Dependent Claim
16 words
The electrical storage device of claim 8 wherein said cationic polymer is a fluorocarbon based polymer.
Claim 11
Dependent Claim
10 words
The electrical storage device of claim 1 including heating means.
Claim 12
Dependent Claim
89 words
In a primary rechargeable electrical energy storage device operable at a temperature above 180° C. comprising a housing having an electrically non-conductive interior surface, at least one cell positioned in said housing, each cell comprising a pair of electroconductive electrodes electrically insulated from contact, said housing containing a non-aqueous electrolyte salt the improvement comprising that negative electrode of each cell is lithium coated with Li 3 N, the positive electrode is a graphite cloth having a Young's Modulus greater than one million psi and the electrolyte is lithium laurate.
Claim 13
Dependent Claim
89 words
In a primary rechargeable electrical energy storage device operable at a temperature above 180° C. comprising a housing having an electrically non-conductive interior surface, at least one cell positioned in said housing, each cell comprising a pair of electroconductive electrodes electrically insulated from contact, said housing containing a non-aqueous electrolyte salt the improvement comprising that negative electrode of each cell is lithium coated with Li 3 N, the positive electrode is a graphite cloth having a Young's Modulus greater than one million psi and the electrolyte is lithium laurate.
References Cited (Backward Citations)
US3428493A
Cited
US3870561A
Cited
US4005183A
Cited
US3847667A
Cited
US4285831A
Cited
US4539277A
Cited
US4707423A
Cited
US4592973A
Cited
US4631118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |