US3709734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathodes for solid electrolyte cells
Assignee: Duracell Inc USA
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Filing: 1971-02-09
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Granted: 1973-01-09
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Expires: 1991-02-09
Abstract
Abstract A solid state battery comprising cathode materials, in composition including an iodide in which the electrochemical activity of the cathode material has the benefit of elemental iodine. The corrosive action of volatized iodine of conventional cathodic materials on the related elements of the solid electrolyte battery is reduced by the iodine being held in a solid chemical compound as a defined iodine complex and further reduced by the use of a lead dioxide current collector, which neither reacts with nor absorbs the active component of the cathode, thus isolating other battery components from the chemical action of iodine by preventing absorption and subsequent diffusion of iodine vapor from the cathode mixture.
Inventors
- 👤 C Liang
- 👤 C Schlaikjer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:55
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; H01M6/00; H01M6/14; H01M6/18; H01M6/182
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
49 words
A solid electrolyte cell, as in claim 1, in which said electrolyte comprises a compound containing iodine as one element; said cathode comprises one of said trihalide compounds embodying a triiodide; and said current collector is a non-metal electronic conductor which will neither react with nor absorb iodine vapor.
Claim 2
Dependent Claim
53 words
A solid electrolyte call, as in claim 1, in which said electrolyte comprises a compound containing one element from the halogen group including iodine and bromine; said cathode comprises one of said trihalides containing one element from said halogen group corresponding to said halide in said electrolyte; and said current collector is PbO2.
Claim 3
Dependent Claim
23 words
A solid electrolyte cell, as in claim 1, in which said trihalide is a triiodide, and said electrolyte is a compound containing iodine.
Claim 4
Dependent Claim
59 words
A solid electrolyte cell, as in claim 1, in which said solid electrolyte compound has high ionic conductivity and embodies a chemical element of said cathode as an element of said electrolyte compound; and said solid cathode compound consisting of a mix of a quantity of said electrolyte compound and of a quantity of a compound constituting a trihalide.
Claim 5
Dependent Claim
49 words
A solid electrolyte cell, as in claim 5, in which said anode consists at least of a metal element; and said electrolyte consists of a compound having one element corresponding to said anode element and at least another element as a halide corresponding to the trihalide of said cathode.
Claim 6
Dependent Claim
35 words
An electrolyte cell, as in claim 4, in which said electrolyte contains an element corresponding to the metal element of the anode or in which said electrolyte is contained in the anode as a compound.
Claim 7
Dependent Claim
38 words
An electrochemical cell comprising a silver metal anode; solid material silver iodide electrolyte; a cathode comprising a compound selected from the group consisting of CsI3, (CH3)4NI3, (C2H5)4NI3, (C3H7)4NI3, (C4H9)4NI3, C5H5NHI3, and; C5H5HNBr; and a lead dioxide current collector.
Claim 8
Dependent Claim
24 words
An electrochemical cell, as in claim 8, in which said anode is lithium metal; and in which said electrolyte is the solid material NH4Li4I5.
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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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |