US3957533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithium-iodine battery having coated anode
Assignee: Greatbatch Ltd
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Filing: 1974-11-19
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Granted: 1976-05-18
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Expires: 1994-11-19
Abstract
Abstract A lithium-iodine cell comprising a cathode including a charge transfer complex of an organic donor component and iodine, an anode including a lithium element having a surface operatively contacting the charge transfer complex material, and a coating on the lithium surface of an organic electron donor material, preferably but not necessarily the organic donor component of the charge transfer complex. The organic electron donor material preferably comprises polyvinyl pyridine polymer and in particular two-vinyl pyridine polymer. A solution of two-vinyl pyridine polymer in benzene is brushed onto the anode lithium surface and then exposed to a desiccant. A number of coatings preferably are applied successively to provide a resulting or finished coating of increased thickness.
Inventors
- 👤 Ralph T. Mead
- 👤 Wilson Greatbatch
- 👤 Frank W. Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:13
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; H01M6/00; H01M6/14; H01M6/18; H01M6/182
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
96 words
A lithium-iodine cell comprising: a. an anode including a lithium element having an operative surface; b. a protective coating on said lithium anode operative surface of an organic electron donor component material; c. a cathode including a charge transfer complex of an organic donor component and iodine, said charge transfer complex material operatively contacting said lithium anode operative surface through said protective coating; d. said protective coating preventing recrystallization of iodine on said lithium anode operative surface so as to maximize the area of said lithium anode surface operatively contacted by said charge transfer complex material.
Claim 2
Dependent Claim
96 words
A lithium-iodine cell comprising: a. an anode including a lithium element having an operative surface; b. a protective coating on said lithium anode operative surface of an organic electron donor component material; c. a cathode including a charge transfer complex of an organic donor component and iodine, said charge transfer complex material operatively contacting said lithium anode operative surface through said protective coating; d. said protective coating preventing recrystallization of iodine on said lithium anode operative surface so as to maximize the area of said lithium anode surface operatively contacted by said charge transfer complex material.
Claim 3
Dependent Claim
22 words
A cell according to claim 1, wherein said coating is of the organic donor component material of said charge transfer complex material.
Claim 4
Dependent Claim
15 words
A cell according to claim 1, wherein said organic donor component comprises polyvinyl pyridine polymer.
Claim 5
Dependent Claim
15 words
A cell according to claim 1, wherein said organic donor component comprises two-vinyl pyridine polymer.
Claim 6
Dependent Claim
17 words
A cell according to claim 1, wherein said coating is a composite of a number of coatings.
Claim 7
Dependent Claim
25 words
A cell according to claim 1, wherein ratio of iodine to organic donor component by weight in said charge transfer complex is greater that 10:1
Claim 8
Independent Claim
115 words
A method of making a lithium-iodine cell wherein the cathode contains a charge transfer complex of an organic donor component and iodine comprising the steps of: a. providing an anode including a lithium element having a surface adapted to be operatively associated with the cathode in the cell; b. applying a coating to said anode surface, said coating including an organic electron donor component material; and c. placing said anode and a cathode current collector in a casing in spaced-apart relation and introducing a cathode including a charge transfer complex of an organic donor component and iodine into said casing into operative contact with the coated surface of said anode and said cathode current collector.
Claim 9
Independent Claim
115 words
A method of making a lithium-iodine cell wherein the cathode contains a charge transfer complex of an organic donor component and iodine comprising the steps of: a. providing an anode including a lithium element having a surface adapted to be operatively associated with the cathode in the cell; b. applying a coating to said anode surface, said coating including an organic electron donor component material; and c. placing said anode and a cathode current collector in a casing in spaced-apart relation and introducing a cathode including a charge transfer complex of an organic donor component and iodine into said casing into operative contact with the coated surface of said anode and said cathode current collector.
Claim 10
Dependent Claim
21 words
A method according to claim 7, wherein said coating is of the organic donor component material of said charge transfer complex.
Claim 11
Dependent Claim
15 words
A method according to claim 7, wherein said organic donor component comprises polyvinyl pyridine polymer.
Claim 12
Dependent Claim
16 words
A method according to claim 7, wherein said organic donor component comprises two -vinyl pyridine polymer.
Claim 13
Dependent Claim
19 words
A method according to claim 7, wherein said coating is applied successively to provide a coating of increased thickness.
Claim 14
Dependent Claim
26 words
A method according to claim 7, wherein the ratio of iodine to organic donor component by weight in said charge transfer complex is greater than 10:1.
Claim 15
Dependent Claim
52 words
A method according to claim 7, wherein said step of applying said coating comprises: a) preparing a solution of polyvinyl pyridine in anhydrous benzene; b) applying said solution to said anode surface; and c) exposing the coated anode surface to a desiccant in a manner sufficient to remove benzene from the coating.
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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) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |