US4405693A
Expired / Lapsed
US
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High rate metal-sulfuryl chloride batteries
Assignee: Northrop Grumman Innovation Systems LLC
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Filing: 1981-10-05
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Granted: 1983-09-20
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Expires: 2001-10-05
Abstract
Abstract An electrochemical cell with a lithium anode, an electrolyte solution comprising an electrolyte salt dissolved in sulfuryl chloride and a cathode doped with a macrocyclic complex of a transition metal such as CoPc, FePc, or (CoPc)n.
Inventors
- 👤 Narayan Doddapaneni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:32
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M4/00; H01M4/86; H01M4/96; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
47 words
In an electrochemical cell having an alkali metal anode, an electrolyte salt, a sulfuryl chloride depolarizer and a cathode, the improvement comprising a dopant in said cathode, wherein said dopant is one selected from a group consisting of monomeric and polymeric phthalocyanine complexes of iron and cobalt.
Claim 2
Dependent Claim
47 words
In an electrochemical cell having an alkali metal anode, an electrolyte salt, a sulfuryl chloride depolarizer and a cathode, the improvement comprising a dopant in said cathode, wherein said dopant is one selected from a group consisting of monomeric and polymeric phthalocyanine complexes of iron and cobalt.
Claim 3
Dependent Claim
21 words
The electrochemical cell of claim 1 wherein said cathode consists primarily of carbon and wherein said dopant is cobalt phthalocyanine polymer.
Claim 4
Dependent Claim
24 words
The electrochemical cell of claim 2 wherein said doped cathode contains from about 0.5% to 20% cobalt phthalocyanine polymer by weight, based on carbon.
Claim 5
Dependent Claim
19 words
The electrochemical cell of claim 2 wherein said doped cathode contains from about 2% to 10% cobalt phthalocyanine polymer.
Claim 6
Dependent Claim
49 words
The electrochemical cell of any one of claims 2 3 or 4 wherein said cobalt phthalocyanine polymer is admixed with said carbon and heat treated at a temperature of at least 550° C. for at least 2 hours such that said dopant is rendered insoluble in the electrolyte solvent.
Claim 7
Dependent Claim
18 words
The electrochemicaal cell of any one of claims 1, or 2 wherein said electrolyte salt is lithium tetrachloroaluminate.
Claim 8
Dependent Claim
18 words
The electrochemical cell of any one of claims 1, or 2 wherein said electrolyte salt is aluminum chloride.
Claim 9
Dependent Claim
16 words
The electrochemical cell of any one of claims 1, or 2 wherein said anode is lithium.
Claim 10
Dependent Claim
50 words
In an electrochemical cell having an alkali metal anode, an electrolyte salt, a sulfuryl chloride depolarizer and a primarily carbon cathode, the improvement comprising an amount of catalyst in said electrolyte wherein said catalyst is one selected from a group consisting of monomer complexes of iron phthalocyanine and cobalt phthalocyanine.
Claim 11
Dependent Claim
50 words
In an electrochemical cell having an alkali metal anode, an electrolyte salt, a sulfuryl chloride depolarizer and a primarily carbon cathode, the improvement comprising an amount of catalyst in said electrolyte wherein said catalyst is one selected from a group consisting of monomer complexes of iron phthalocyanine and cobalt phthalocyanine.
Claim 12
Dependent Claim
35 words
The electrochemical cell of claim 9 wherein the amount of said catalyst is from about 0.5 milligram of catalyst per cubic centimeter of electrolyte to about 3.0 milligrams of catalyst per cubic centimeter of electrolyte.
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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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |