US4037025A
Expired / Lapsed
US
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Halogen fueled organic electrolyte fuel cell
Assignee: Duracell Inc USA
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Filing: 1972-10-20
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Granted: 1977-07-19
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Expires: 1992-10-20
Abstract
Abstract A fuel cell is described comprising a halogen-fueled porous cathode, an active metal anode and an organic electrolyte having dissolved therein sulfur dioxide, to improve the solubility of the halogen fuel, to prevent passivation of the electrodes by the products of the reaction of the halogen with the active metal anode and to protect the active metal anode from reacting directly with the halogen dissolved in the electrolyte.
Inventors
- 👤 Arabinda N. Dey
- 👤 Carl R. Schlaikjer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:45
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/38; H01M4/388; H01M8/00; H01M8/22; H01M6/00; H01M6/14; H01M6/16; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
61 words
A fuel cell comprising a porous cathode element for introducing a cathodic halogen; a source of halogen for said cathode; an active metal anode; and an organic electrolyte in contact with said anode and said cathode, said organic electrolyte comprising an anhydrous polar organic liquid solvent having dissolved therein an anhydrous inorganic halide salt of said active metal and sulfur dioxide.
Claim 2
Dependent Claim
61 words
A fuel cell comprising a porous cathode element for introducing a cathodic halogen; a source of halogen for said cathode; an active metal anode; and an organic electrolyte in contact with said anode and said cathode, said organic electrolyte comprising an anhydrous polar organic liquid solvent having dissolved therein an anhydrous inorganic halide salt of said active metal and sulfur dioxide.
Claim 3
Dependent Claim
43 words
The fuel cell according to claim 1 wherein the organic solvent is selected from the group consisting of dimethyl formamide, dimethyl sulfoxide, methyl and butyl formates, gammabutyrolactone, ethylene and propylene carbonates, tetrahydrofuran, 1,2-dimethoxy ethane, methyl and ethyl cabonates and acetates, and mixtures thereof.
Claim 4
Dependent Claim
33 words
The fuel cell according to claim 2 wherein said inorganic salt is selected from the group consisting of the chlorides, bromides, iodides, tetrachloroaluminate, perchlorates, tetrafluoroborates, hexafluorophosphates, and hexafluoroarsenates of said active anode metal.
Claim 5
Dependent Claim
46 words
The fuel cell according to claim 2 wherein the active anode metal is selected from the group consisting of lithium, calcium, magnesium, aluminum and alloys thereof with each other and alloys thereof with a metal selected from the group consisting of tin, antimony, mercury and zinc.
Claim 6
Dependent Claim
18 words
The fuel cell according to claim 2 wherein said electrolyte is saturated with respect to said sulfur dioxide.
Claim 7
Dependent Claim
15 words
The fuel cell according to claim 2 containing additionally dissolved therein the halogen cathodic material.
Claim 8
Dependent Claim
21 words
The fuel cell according to claim 6 wherein the halogen is selected from the group consisting of chlorine, bromine, and iodine.
Claim 9
Dependent Claim
12 words
The fuel cell according to claim 2 wherein said halogen is iodine.
Claim 10
Dependent Claim
13 words
The fuel cell according to claim 8 wherein said active metal is lithium.
Claim 11
Dependent Claim
18 words
The fuel cell according to claim 2 wherein said active metal is above hydrogen in the electrochemical series.
Claim 12
Dependent Claim
29 words
The fuel cell according to claim 2 wherein said electrolyte, having said halogen dissolved therein, is introduced into said fuel cell through the pores in the porous cathode element.
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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |