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US4332869A
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Metal-rich iron sulfide cathode material
Assignee: ESB Inc
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Filing: 1980-09-12
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Granted: 1982-06-01
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Expires: 2000-09-12
Abstract
Abstract An electrolytic cell having an active metal anode, an electrolyte compatible with the anode metal and a cathode of metal-rich iron sulfide said cathode being substantially devoid of sulfur-rich phases. An example of such a cell is Li/1M LiAsF 6 dissolved in 50% propylene carbonate--50% dimethoxyethane/Fe 1 .2 S. The invention also includes such cathodes per se.
Inventors
- 👤 Nehemiah Margalit
- 👤 Ashok V. Joshi
- 👤 Wesley E. Aker
- 👤 Dennis P. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:15
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; C; C01; C01G; C01G49/00; C01G49/12; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/581; H01M10/056; H01M10/0564; H01M10/0566; H01M10/0569; H01M6/00; H01M6/14; H01M6/16; H01M6/162; H01M6/164; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
29 words
A cathode material having a formula of Fe.sub.(x+1) S wherein x is a number from about 0.05 to about 0.2, said cathode material being substantially devoid of sulfur-rich phases.
Claim 2
Dependent Claim
29 words
A cathode material having a formula of Fe.sub.(x+1) S wherein x is a number from about 0.05 to about 0.2, said cathode material being substantially devoid of sulfur-rich phases.
Claim 3
Dependent Claim
18 words
A cathode material as in claim 1 wherein x is a number from about 0.1 to about 0.2.
Claim 4
Dependent Claim
12 words
A cathode material as in claim 1 wherein x is about 0.2.
Claim 5
Dependent Claim
44 words
An electrochemical cell including an active metal anode, an electrolyte compatible with said active metal and a cathode having a formula of Fe.sub.(1+x) S wherein x is a number from about 0.05 to about 0.2, said cathode material being substantially devoid of sulfur-rich phases.
Claim 6
Dependent Claim
44 words
An electrochemical cell including an active metal anode, an electrolyte compatible with said active metal and a cathode having a formula of Fe.sub.(1+x) S wherein x is a number from about 0.05 to about 0.2, said cathode material being substantially devoid of sulfur-rich phases.
Claim 7
Dependent Claim
28 words
An electrochemical cell as in claim 4 wherein the chemical formula of the cathode includes as a value of x a number from about 0.1 to about 0.2.
Claim 8
Dependent Claim
13 words
An electrochemical cell as in claim 4 wherein the active metal is lithium.
References Cited (Backward Citations)
US3907589A
Cited
US4078120A
Cited
US4084045A
Cited
US4189529A
Cited
US4164069A
Cited
US4250236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |