US4010043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithium-iodine cells and method for making same
Assignee: Catalyst Research Corp
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Filing: 1976-03-12
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Granted: 1977-03-01
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Expires: 1996-03-12
Abstract
Abstract A lithium iodine primary cell is provided that comprises a lithium anode encasing member having an aperture therethrough. Positioned within the anode encasing member is a cathode which consists essentially of a mixture of organic charge-transfer complex and iodine. The cathode includes a current collector having a lead portion with an insulating coating positioned through the aperture in the encasing member. Optionally, the current collector may include an insulating frame around its periphery to prevent electrical contact with the anode. A lithium iodide electrolyte is coextensively positioned between and in contact with the inner surface of the encasing member and the cathode.
Inventors
- 👤 Alan A. Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:02
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/182; H01M50/00; H01M50/10; H01M50/102; H01M50/107; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A method for making a lithium iodine cell comprising: A. forming a lithium metal sheet into a receiving vessel having an aperture therethrough and an opening thereinto, said vessel including at least one extending portion having a shape conforming dimensionally to said opening for sealing closed said opening; B. forming a cathode current collector by welding a plastic coated lead wire to a metallic screen-like material; C. positioning the cathode current collector within the receiving vessel and the lead wire through said aperture; D. heating a cathode material to a flowable consistency; E. completely filling said receiving vessel with the heated cathode material and chilling said filling vessel to solidify said material; and F. while said material is solidified, positioning said extending portion in abutting relationship with the solidified material to sealing closed said opening under pressure to form an anode encasing member.
Claim 2
Independent Claim
143 words
A method for making a lithium iodine cell comprising: A. forming a lithium metal sheet into a receiving vessel having an aperture therethrough and an opening thereinto, said vessel including at least one extending portion having a shape conforming dimensionally to said opening for sealing closed said opening; B. forming a cathode current collector by welding a plastic coated lead wire to a metallic screen-like material; C. positioning the cathode current collector within the receiving vessel and the lead wire through said aperture; D. heating a cathode material to a flowable consistency; E. completely filling said receiving vessel with the heated cathode material and chilling said filling vessel to solidify said material; and F. while said material is solidified, positioning said extending portion in abutting relationship with the solidified material to sealing closed said opening under pressure to form an anode encasing member.
Claim 3
Dependent Claim
73 words
A method as set forth in claim 1 including the step of forming an anode current collector on said lithium metal sheet prior to forming said receiving vessel, said anode current collector being formed by positioning a metallic screen-like material having a lead portion on the surface of sheet, overlaying said screen with a lithium foil of conforming dimension, and pressing said foil and screen into said sheet to form a lithium-lithium bond.
Claim 4
Dependent Claim
25 words
A method as set forth in claim 2 including the step of coating said anode encasing member and anode current collector with an insulating material.
Claim 5
Dependent Claim
62 words
A method as set forth in claim 3 including the steps of positioning said coated anode encasing member in a metal case, welding an enclosing member having a pair of openings therethrough to said metal case, and sealing said leads of said anode and cathode current collector in the respective openings to hermetically seal said anode encasing member within said metal case.
Claim 6
Independent Claim
178 words
A method for making a lithium iodine cell comprising: A. forming a lithium foil sheet into a receiving vessel having an opening therein by folding the foil and cold welding the edges of the folded foil and cutting from a lithium foil a compression plate; B. forming a cathode current collector from at least a metallic foil and electrically connecting thereto an iodine resistant insulated lead wire; C. positioning the cathode current collector within the receiving vessel; D. heating a cathode material consisting essentially of an organic charge transfer complex and iodine to a flowable consistency; E. completely filling said receiving vessel with the heated cathode material, and chilling said filled vessel to solidify said material; F. while said cathode material is solidified, positioning said compression plate over said material in the vessel and folding the edges of said vessel thereover and permitting the insulated lead wire to pass through; and G. cold welding said folded edges to said plate under pressure, and forcing under pressure said compression plate to make intimate contact with said solidified cathode material.
Claim 7
Independent Claim
178 words
A method for making a lithium iodine cell comprising: A. forming a lithium foil sheet into a receiving vessel having an opening therein by folding the foil and cold welding the edges of the folded foil and cutting from a lithium foil a compression plate; B. forming a cathode current collector from at least a metallic foil and electrically connecting thereto an iodine resistant insulated lead wire; C. positioning the cathode current collector within the receiving vessel; D. heating a cathode material consisting essentially of an organic charge transfer complex and iodine to a flowable consistency; E. completely filling said receiving vessel with the heated cathode material, and chilling said filled vessel to solidify said material; F. while said cathode material is solidified, positioning said compression plate over said material in the vessel and folding the edges of said vessel thereover and permitting the insulated lead wire to pass through; and G. cold welding said folded edges to said plate under pressure, and forcing under pressure said compression plate to make intimate contact with said solidified cathode material.
Claim 8
Dependent Claim
51 words
A method as set forth in claim 5 including the step of forming an anode current collector on said lithium vessel by cold welding a second sheet of lithium foil over a metallic screen-like material having a lead portion attached thereto and positioned on the outer surface of said formed vessel.
References Cited (Backward Citations)
US3723183A
Cited
US3817791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |