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US4057676A
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Cell containing carbon-fluorine compound cathode, alkali metal anode and solid halo-aluminum alkali metal compound electrolyte
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1977-01-04
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Granted: 1977-11-08
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Expires: 1997-01-04
Abstract
Abstract A novel electrochemical cell is disclosed utilizing an alkali metal anode, a fluorinated carbon cathode and a solid electrolyte consisting essentially of one or more alkali metal aluminum tetrahalide compounds of the formula MAlX4 wherein M is an alkali metal and X is one or more halogens selected from the group consisting of chlorine and bromine. Preferred is the cell wherein the anode is lithium, the cathode is C2F, and the electrolyte consists essentially of LiAlCl4.
Inventors
- 👤 Bhaskara M. L. Rao
- 👤 Paul A. Malachesky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:35
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/182
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
77 words
A current producing primary cell from which a current can be drawn at a temperature below the melting point of the electrolyte, comprising: a. a cathode having a compound formed of fluorine and carbon; b. an alkali metal-containing anode; and c. a solid electrolyte consisting essentially of one or more compounds of the formula: MAlX.sub.4 wherein M is an alkali metal and X is one or more halogens selected from the group consisting of chlorine and bromine.
Claim 2
Dependent Claim
77 words
A current producing primary cell from which a current can be drawn at a temperature below the melting point of the electrolyte, comprising: a. a cathode having a compound formed of fluorine and carbon; b. an alkali metal-containing anode; and c. a solid electrolyte consisting essentially of one or more compounds of the formula: MAlX.sub.4 wherein M is an alkali metal and X is one or more halogens selected from the group consisting of chlorine and bromine.
Claim 3
Dependent Claim
31 words
The cell of claim 1 wherein the anode is substantially sodium, lithium, potassium, or alloys containing these, and wherein M is selected from the group consisting of sodium, lithium and potassium.
Claim 4
Dependent Claim
19 words
The cell of claim 2 wherein X is a halogen selected from the group consisting of chlorine and bromine.
Claim 5
Dependent Claim
13 words
The cell of claim 1 wherein the cathode is fluorinated crystalline carbon material.
Claim 6
Dependent Claim
31 words
The cell of claim 4 wherein the anode is substantially sodium, lithium, potassium or alloys containing these, and wherein M is selected from the group consisting of sodium, lithium and potassium.
Claim 7
Dependent Claim
9 words
The cell of claim 5 wherein X is chlorine.
Claim 8
Dependent Claim
32 words
the cell of claim 6 wherein the cathode is CF 2 , wherein the anode is substantially lithium, or a lithium alloy, and wherein the electrolyte consists essentially of LiAlCl 4 .
Claim 9
Dependent Claim
57 words
A primary electric cell from which a current can be drawn at a temperature below the melting point of the electrolyte, comprising: a. a cathode containing a cathode-active material formed by reacting graphite with chlorine trifluoride in the presence of HF; b. a lithium metal-containing anode; and c. a solid electrolyte consisting essentially of LiAlCl 4 .
Claim 10
Dependent Claim
57 words
A primary electric cell from which a current can be drawn at a temperature below the melting point of the electrolyte, comprising: a. a cathode containing a cathode-active material formed by reacting graphite with chlorine trifluoride in the presence of HF; b. a lithium metal-containing anode; and c. a solid electrolyte consisting essentially of LiAlCl 4 .
Claim 11
Dependent Claim
19 words
The cell of claim 8 wherein the solid electrolyte has been melted and cooled to form a glassy phase.
Claim 12
Independent Claim
83 words
A method of operating a current-producing primary cell, comprising: drawing a current from said cell at a temperature below the melting point of the electrolyte of said cell wherein said cell comprises a cathode having a compound formed of fluorine and carbon, an alkali metal-containing anode, and a solid electrolyte consisting essentially of one or more compounds of the formula: MAlX.sub.4 wherein M is an alkali metal and X is one or more halogens selected from the group consisting of chlorine and bromine.
Claim 13
Independent Claim
83 words
A method of operating a current-producing primary cell, comprising: drawing a current from said cell at a temperature below the melting point of the electrolyte of said cell wherein said cell comprises a cathode having a compound formed of fluorine and carbon, an alkali metal-containing anode, and a solid electrolyte consisting essentially of one or more compounds of the formula: MAlX.sub.4 wherein M is an alkali metal and X is one or more halogens selected from the group consisting of chlorine and bromine.
Claim 14
Dependent Claim
33 words
The method of claim 10 wherein M is selected from the group consisting of sodium, lithium and potassium, and wherein X is a halogen selected from the group consisting of chlorine and bromine.
Claim 15
Dependent Claim
20 words
The method of claim 11 wherein the anode is substantially lithium or a lithium alloy, and wherein M is lithium.
Claim 16
Dependent Claim
15 words
The method of claim 12 wherein the solid electrolyte consists essentially of LiAlCl 4 .
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) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |