US4248946A
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Cell having an alkali metal anode, a fluorinated carbon cathode and an electrolyte which includes an alkali metal halide salt and a solvent system consisting of an ether solvent and a cyclic carbonate cosolvent
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1978-10-30
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Granted: 1981-02-03
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Expires: 1998-10-30
Abstract
Abstract A novel electrochemical cell is disclosed utilizing an alkali metal anode, a fluorinated carbon cathode, and an electrolyte which includes an alkali metal halide salt and a mixed solvent system consisting of an ether and a cyclic carbonate. Preferred are the cells wherein the anode is lithium, the cathode is C2F, and the electrolyte contains essentially of LiCl and a solvent system of dimethoxyethane and propylene carbonate.
Inventors
- 👤 Paul A. Malachesky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:31
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/583; H01M4/5835; H01M6/00; H01M6/14; H01M6/16; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
116 words
A current producing cell, comprising: (a) an anode containing alkali metal as its anode-active material; (b) a cathode containing as a cathode-active material a compound of fluorine and carbon; and, (c) an electrolyte containing: (i) a mixed solvent system consisting of about 20 to about 80 percent by volume, based on the total solvent volume, of one or more ethers, and about 80 to about 20 percent by volume, based on the total solvent volume, of one or more cyclic carbonate cosolvents; and, (ii) one or more alkali metal halide salts having the formula: ZX wherein Z in an alkali metal and wherein X is a halogen selected from the group consisting of chlorine and fluorine.
Claim 2
Dependent Claim
116 words
A current producing cell, comprising: (a) an anode containing alkali metal as its anode-active material; (b) a cathode containing as a cathode-active material a compound of fluorine and carbon; and, (c) an electrolyte containing: (i) a mixed solvent system consisting of about 20 to about 80 percent by volume, based on the total solvent volume, of one or more ethers, and about 80 to about 20 percent by volume, based on the total solvent volume, of one or more cyclic carbonate cosolvents; and, (ii) one or more alkali metal halide salts having the formula: ZX wherein Z in an alkali metal and wherein X is a halogen selected from the group consisting of chlorine and fluorine.
Claim 3
Dependent Claim
31 words
The cell of claim 1 wherein the anode is substantially lithium, sodium, potassium, or alloys containing these, and wherein Z is selected from the group consisting of lithium, sodium and potassium.
Claim 4
Dependent Claim
9 words
The cell of claim 2 wherein X is chlorine.
Claim 5
Dependent Claim
13 words
The cell of claim 1 wherein the cathode is fluorinated crystalline carbon material.
Claim 6
Dependent Claim
50 words
The cell of claim 4 wherein the anode is substantially lithium, sodium, potassium, or alloys containing these, wherein Z is selected from the group consisting of lithium, sodium and potassium, and wherein said ether solvent is one or more ethers selected from the group consisting of dimethoxyethane, diglyme and triglyme.
Claim 7
Dependent Claim
13 words
The cell of claim 5 wherein said alkali metal halide salt is LiCl.
Claim 8
Dependent Claim
22 words
The cell of claim 6 wherein the cathode is C 2 F, wherein the anode is substantially lithium, or a lithium alloy.
Claim 9
Dependent Claim
11 words
The cell of claim 7 wherein said ether solvent is dimethoxyethane.
Claim 10
Dependent Claim
12 words
The cell of claim 8 wherein aid cyclic carbonate is propylene carbonate.
Claim 11
Dependent Claim
114 words
An electric cell comprising: (a) a lithium metal-containing anode; (b) a cathode containing a cathode-active material formed by reacting graphite with chlorine trifluoride in the presence of HF; and (c) and electrolyte containing: (i) a solvent system consisting of about 20 to about 80 percent by volume, based on the total solvent volume, of one or more ethers, and about 80 to about 20 percent by volume, based on the total solvent volume, of one or more cyclic carbonate cosolvents; and, (ii) one or more alkali metal halide salts having the formula: ZX wherein Z is an alkali metal and wherein X is a halogen selected from the group consisting of chlorine and fluorine.
Claim 12
Dependent Claim
114 words
An electric cell comprising: (a) a lithium metal-containing anode; (b) a cathode containing a cathode-active material formed by reacting graphite with chlorine trifluoride in the presence of HF; and (c) and electrolyte containing: (i) a solvent system consisting of about 20 to about 80 percent by volume, based on the total solvent volume, of one or more ethers, and about 80 to about 20 percent by volume, based on the total solvent volume, of one or more cyclic carbonate cosolvents; and, (ii) one or more alkali metal halide salts having the formula: ZX wherein Z is an alkali metal and wherein X is a halogen selected from the group consisting of chlorine and fluorine.
Claim 13
Dependent Claim
18 words
The cell of claim 10 wherein Z is selected from the group consisting of lithium, sodium and potassium.
Claim 14
Dependent Claim
24 words
The cell of claim 11 wherein said ether solvent is one or more ethers selected from the group consisting of dimethoxyethane, diglyme and triglyme.
Claim 15
Dependent Claim
9 words
The cell of claim 12 wherein X is chlorine.
Claim 16
Dependent Claim
13 words
The cell of claim 13 wherein said alkali metal halide salt is LiCl.
Claim 17
Dependent Claim
11 words
The cell of claim 14 wherein said ether solvent is dimethoxyethane.
Claim 18
Dependent Claim
13 words
The cell of claim 15 wherein said cyclic carbonate cosolvent is propylene carbonate.
Claim 19
Dependent Claim
34 words
The cell of claim 10 wherein about 40 to about 60 percent by volume of said solvent system is said ether solvent and about 60 to about 40 percent by volume is said cyclic.
Claim 20
Dependent Claim
9 words
The cell of claim 17 wherein Z is lithium.
Claim 21
Dependent Claim
24 words
The cell of claim 18 wherein said ether solvent is one or more ethers selected from the group consisting of dimethoxyethane, diglyme and triglyme.
Claim 22
Dependent Claim
11 words
The cell of claim 19 wherein said ether solvent is dimethoxyethane.
Claim 23
Dependent Claim
13 words
The cell of claim 20 wherein said cyclic carbonate cosolvent is propylene carbonate.
Claim 24
Dependent Claim
13 words
The cell of claim 21 wherein said alkali metal halide salt is LiCl.
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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) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |