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US4143213A
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Cells having cathodes containing chalcogenide compounds of the formula Ma FeXb and species thereof exhibiting alkali metal incorporation
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1978-04-26
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Granted: 1979-03-06
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Expires: 1998-04-26
Abstract
Abstract The present invention is directed to an electric current-producing cell which contains: (a) an anode having as its anode-active material one or more alkali metals; (b) a cathode having as its cathode-active material one or more compounds selected from the group consisting of: (i) chalcogenide compounds having the formula: M.sub.a FeX.sub.b wherein M is a metal selected from the group consisting of sodium, potassium, rubidium, cesium, calcium, strontium and barium wherein X is a chalcogen selected from sulfur and selenium, wherein a is a numerical value of about 0.5 when M is a divalent metal and a is a numerical value of about 1 when M is a monovalent metal, and wherein b is a numerical value of about 2; and, (ii) species of chalcogenide compounds of said formula exhibiting alkali metal incorporation; and, (c) an electrolyte which is chemically inert with respect to said anode and said cathode and which permits the migration of ions between said anode and said cathode.
Inventors
- 👤 Allan J. Jacobson
- 👤 M. Stanley Whittingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:06
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/36; H01M4/00; H01M4/02; H01M4/13; H01M4/136; H01M4/36; H01M4/58; H01M4/581; H01M10/054; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
151 words
An electric current-producing cell, comprising: (a) an anode having as its anode-active material one or more alkali metals; (b) a cathode having as its cathode-active material one or more compounds selected from the group consisting of: (i) chalcogenide compounds having the formula: M.sub.a FeX.sub.b wherein M is a metal selected from the group consisting of sodium, potassium, rubidium, cesium, calcium, strontium and barium, wherein X is a chalcogen selected from sulfur and selenium, wherein a is a numerical value of about 0.5 when M is a divalent metal and about 1 when M is a monovalent metal, and wherein b is a numerical value of about 2; and, (ii) species of any of the chalcogenide compounds of said formula exhibiting alkali metal incorporation; and, (c) an electrolyte which is chemically inert with respect to said anode and said cathode and which permits the migration of ions between anode and said cathode.
Claim 2
Dependent Claim
151 words
An electric current-producing cell, comprising: (a) an anode having as its anode-active material one or more alkali metals; (b) a cathode having as its cathode-active material one or more compounds selected from the group consisting of: (i) chalcogenide compounds having the formula: M.sub.a FeX.sub.b wherein M is a metal selected from the group consisting of sodium, potassium, rubidium, cesium, calcium, strontium and barium, wherein X is a chalcogen selected from sulfur and selenium, wherein a is a numerical value of about 0.5 when M is a divalent metal and about 1 when M is a monovalent metal, and wherein b is a numerical value of about 2; and, (ii) species of any of the chalcogenide compounds of said formula exhibiting alkali metal incorporation; and, (c) an electrolyte which is chemically inert with respect to said anode and said cathode and which permits the migration of ions between anode and said cathode.
Claim 3
Dependent Claim
19 words
The cell of claim 1 wherein said metal M is selected from the group consisting of potassium and strontium.
Claim 4
Dependent Claim
11 words
The cell of claim 2 wherein said metal M is potassium.
Claim 5
Dependent Claim
11 words
The cell of claim 3 wherein said chalcogen X is sulfur.
Claim 6
Dependent Claim
19 words
The cell of claim 1 wherein said anode-active material is selected from the group consisting of lithium and sodium.
Claim 7
Dependent Claim
19 words
The cell of claim 5 wherein said metal M is selected from the group consisting of potassium and strontium.
Claim 8
Dependent Claim
11 words
The cell of claim 6 wherein said metal M is potassium.
Claim 9
Dependent Claim
11 words
The cell of claim 7 wherein said chalcogen X is sulfur.
Claim 10
Dependent Claim
18 words
The cell of claim 1 wherein said anode-active material is lithium and said cathode-active material exhibits lithium incorporation.
Claim 11
Dependent Claim
19 words
The cell of claim 9 wherein said metal M is selected from the group consisting of potassium and strontium.
Claim 12
Dependent Claim
11 words
The cell of claim 10 wherein said metal M is potassium.
Claim 13
Dependent Claim
11 words
The cell of claim 11 wherein said chalcogen X is sulfur.
Claim 14
Dependent Claim
15 words
The cell of claim 1 wherein the electrolyte solvent contains at least one cyclic ether.
Claim 15
Dependent Claim
34 words
The cell of claim 1 wherein said anode-active material is lithium, said cathode-active material is KFeS 2 and said electrolyte is a lithium salt dissolved is a solvent containing at least one organic ether.
Claim 16
Dependent Claim
12 words
The cell of claim 1 in which the electrolyte is a solid.
Claim 17
Dependent Claim
13 words
The cell of claim 1 in which the electrolyte is a molten salt.
References Cited (Backward Citations)
US4049879A
Cited
US4074019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-05 | 1982-09-04 | 1983-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-05 | 1986-09-04 | 1987-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-05 | 1990-09-04 | 1991-03-06 | $7700.00 | Window Closed / Lapsed |