US4148976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state lithium-iodine primary battery
Assignee: Panasonic Holdings Corp
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Filing: 1978-07-05
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Granted: 1979-04-10
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Expires: 1998-07-05
Abstract
Abstract A solid-state primary cell comprising a lithium anode, an iodine cathode containing a charge transfer complex and a solid lithium iodide electrolyte doped with a 1-normal-alkyl-pyridinium iodide. The anode surface can be coated with LiOH or Li3N. The iodine cathode comprises a complex of iodine and 1-normal-alkyl-pyridinium iodide and preferably contains titanium dioxide powder, alumina gel powder or silica gel powder admixed with the complex.
Inventors
- 👤 Satoshi Sekido
- 👤 Tadashi Sotomura
- 👤 Yoshito Ninomiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:27
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; H01M6/00; H01M6/14; H01M6/18; H01M6/182; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
38 words
A substantially anhydrous cell comprising a solid lithium anode, a solid electronically conductive iodine cathode containing a charge transfer complex of iodine with a 1-normal-alkyl-pyridinium iodide, and a solid electrolyte of lithium iodide doped with the 1-normal-alkyl-pyridinium iodide.
Claim 2
Dependent Claim
38 words
A substantially anhydrous cell comprising a solid lithium anode, a solid electronically conductive iodine cathode containing a charge transfer complex of iodine with a 1-normal-alkyl-pyridinium iodide, and a solid electrolyte of lithium iodide doped with the 1-normal-alkyl-pyridinium iodide.
Claim 3
Dependent Claim
16 words
A cell according to claim 1 in which the anode surface is coated with lithium hydroxide.
Claim 4
Dependent Claim
16 words
A cell according to claim 1 in which the anode surface is coated with lithium nitride.
Claim 5
Dependent Claim
24 words
A cell according to claim 1, 2 or 3 in which 1-normal-alkyl-pyridinium iodide has an alkyl group of at least three normal carbon chains.
Claim 6
Dependent Claim
28 words
A cell according to claim 1, 2 or 3 in which the charge transfer complex contains between 6 and 12 atoms of iodine for each atom of nitrogen.
Claim 7
Dependent Claim
35 words
A cell according to claim 1, 2 or 3 in which the cathode contains an iodine-inert electrically nonconductive powder selected from the group consisting of titanium dioxide powder, alumina gel powder and silica gel powder.
Claim 8
Dependent Claim
23 words
A cell according to claim 5 in which the cathode is a mixture consisting of the charge transfer complex and silica gel powder.
Claim 9
Dependent Claim
25 words
A cell according to claim 7 in which the charge transfer complex has 9 atoms of iodine for each atom of nitrogen of 1-normal-butyl-pyridinium iodide.
Claim 10
Dependent Claim
22 words
A cell according to claim 7 in which the cathode contains between 10 and 25 weight percent of the silica gel powder.
Claim 11
Dependent Claim
21 words
A cell according to claim 1, 2 or 3 in which the iodine cathode is separated from an anode current collector.
Claim 12
Dependent Claim
41 words
A cell according to claim 1, 2 or 3 in which a cathode current collector is made of a super ferrite stainless steel consisting of at least 30 weight percent of Cr, at least 2 weight percent of Mo, and Fe.
Claim 13
Dependent Claim
34 words
A cell according to claim 1, 2 or 3 in which an insulator is made of iodine resistant plastics selected from the group consisting of copolymer of ethylene and tetrafluoroethylene, polypropylene, polyethylene and polyimide.
Claim 14
Dependent Claim
26 words
A process for assembling a cell according to claim 1, 2 or 3 in which the lithium anode surface is directly attached to the iodine cathode.
Claim 15
Dependent Claim
26 words
A process for assembling a cell according to claim 1, 2 or 3 in which the lithium anode surface is directly pressed against the iodine cathode.
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) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |