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US3922174A
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US
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Electrochemical cell
Assignee: Verizon Laboratories Inc
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Filing: 1973-01-22
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Granted: 1975-11-25
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Expires: 1993-01-22
Abstract
Abstract An electrochemical cell having an alkali metal anode; a cathode on which the solvent material is catalytically reduced, said cathode comprising a catalytic cathode material selected from the group consisting of gold, carbon and (C4F)n; and an electrolyte containing an inorganic solvent selected from the group consisting of phosphorus oxychloride, thionyl chloride, sulfuryl chloride, and mixtures thereof, and a solute dissolved in the solvent. Such cells are housed in a titanium or titanium alloy case which has been found to be compatible with the highly reactive liquid inorganic oxyhalide solvent material.
Inventors
- 👤 Adam Heller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:08
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M50/00; H01M50/10; H01M50/116; H01M50/117; H01M50/119; H01M6/00; H01M6/14
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
109 words
AN ELECTROCHEMICAL CELL COMPRISING AN ALKAI METAL ANODE; A CATHODE MATERIAL SELECTED FROM THE GROUP CONSISTING OF GOLD, CARBON AN INTERCALATION COMPOUND REPRESENTED BY THE FORMULA (C4F)N WHERE N REFERS TO A LARGE, BUT INDEFINITE, NUMBER OF RECURRING (C4F) GROUPS IN SAID INTERCALATION COMPOUND, AN ELECTROLYTE COMPRISING AN INORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS OXYCHLORIDE, THIONYL CHLORIDE, SULFURLY CHLORIDE, AND MIXTURES THEREOF, AND A SOLUTE DISSOLVED IN SAID SOLVENT; SAID ANODE, CATHODE AND ELECTROLYTE BEING HOUSED IN A CASING FABRICATED FROM TITANIUM OR A TITANIUM ALLOY; SAID CATHODE MATERIAL CATALYTICALLY DECOMPOSING SAID SOLVENT DURING CELL OPERATION WHEREBY SAID SOLVENT IS UTILIZED AS THE OXIDIZING CATHODE COMPONENT.
Claim 2
Dependent Claim
109 words
AN ELECTROCHEMICAL CELL COMPRISING AN ALKAI METAL ANODE; A CATHODE MATERIAL SELECTED FROM THE GROUP CONSISTING OF GOLD, CARBON AN INTERCALATION COMPOUND REPRESENTED BY THE FORMULA (C4F)N WHERE N REFERS TO A LARGE, BUT INDEFINITE, NUMBER OF RECURRING (C4F) GROUPS IN SAID INTERCALATION COMPOUND, AN ELECTROLYTE COMPRISING AN INORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS OXYCHLORIDE, THIONYL CHLORIDE, SULFURLY CHLORIDE, AND MIXTURES THEREOF, AND A SOLUTE DISSOLVED IN SAID SOLVENT; SAID ANODE, CATHODE AND ELECTROLYTE BEING HOUSED IN A CASING FABRICATED FROM TITANIUM OR A TITANIUM ALLOY; SAID CATHODE MATERIAL CATALYTICALLY DECOMPOSING SAID SOLVENT DURING CELL OPERATION WHEREBY SAID SOLVENT IS UTILIZED AS THE OXIDIZING CATHODE COMPONENT.
Claim 3
Dependent Claim
13 words
The electrochemical cell of claim 1 wherein said housing is fabricated from titanium.
Claim 4
Dependent Claim
15 words
The electrochemical cell of claim 1 wherein said housing is fabricated from a titanium alloy.
Claim 5
Dependent Claim
20 words
The electrochemical cell of claim 1 wherein said housing is fabricated from a titanium alloy containing at least 90% titanium.
Claim 6
Dependent Claim
13 words
The electrochemical cell of claim 1 wherein said active anode material is lithium.
Claim 7
Dependent Claim
13 words
The electrochemical cell of claim 1 wherein said active anode material is sodium.
Claim 8
Dependent Claim
12 words
The electrochemical cell of claim 1 wherein said cathode material is gold.
Claim 9
Dependent Claim
20 words
The electrochemical cell of claim 1 wherein said cathode material is gold plated on a titanium or titanium alloy support.
Claim 10
Dependent Claim
13 words
The electrochemical cell of claim 1 wherein said cathode material is carbon black.
Claim 11
Dependent Claim
12 words
The electrochemical cell of claim 1 wherein said cathode material is graphite.
Claim 12
Dependent Claim
20 words
The electrochemical cell of claim 1 wherein said cathode material is (C4F)n, where n is as defined in claim 1.
Claim 13
Dependent Claim
36 words
The electrochemical cell of claim 1 wherein said cathode material is a mixture of (C4F)n and (CF)n to give a general formula (CxF)n where x is a numerical value greater than 1 and less than 4.
Claim 14
Dependent Claim
83 words
The electrochemical cell of claim 1 wherein said solute provides at least one anion having the formula X , Mx4 , M''X6 , and M''''Cl6 , where M is an element selected from the group consisting of aluminum and boron; M'' is an element selected from the group consisting of phosphorus, arsenic and antimony; M'''' is an element selected from the group consisting of tin, zirconium and titanium; and X is a halogen; said solute further providing at least one alkali metal cation.
Claim 15
Dependent Claim
43 words
The electrochemical cell of claim 1 wherein said solute includes at least one compound selected from the group consisting of lithium tetrachloroaluminate, lithium tetrachloroborate, lithium tetrafluoroborate, lithium hexafluorophosphate, lithium hexachlorostannate, lithium hexachlorozirconate, lithium hexachlorotitanate, lithium chlorosulfate, lithium chloride, lithium dichlorophosphate, and lithium tetrabromoaluminate.
Claim 16
Dependent Claim
13 words
The electrochemical cell of claim 1 wherein said solute comprises a Lewis acid.
Claim 17
Dependent Claim
13 words
The electrochemical cell of claim 1 wherein said inorganic solvent is phosphorus oxychloride.
Claim 18
Dependent Claim
13 words
The electrochemical cell of claim 1 wherein said inorganic solvent is thionyl chloride.
Claim 19
Dependent Claim
13 words
The electrochemical cell of claim 1 wherein said inorganic solvent is sulfuryl chloride.
Claim 20
Dependent Claim
22 words
The electrochemical cell of claim 1 wherein said inorganic solvent is a mixture of at least two of said inorganic solvent materials.
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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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |