US4177329A
Expired / Lapsed
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Electrolyte salts for non aqueous electrochemical cells
Assignee: Duracell Inc USA
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Filing: 1978-11-02
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Granted: 1979-12-04
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Expires: 1998-11-02
Abstract
Abstract Novel electrolyte salts having high current carrying capability for non-aqueous electrochemical cells particularly those containing fluid depolarizer/electrolyte solvents. The salts have the general formula M(ZX4)n with "M" being an alkali or alkaline earth metal, "Z" being gallium, indium or thallium, "X" being a halogen and "n" being either 1 or 2.
Inventors
- 👤 Arabinda N. Dey
- 👤 John S. Miller
- 👤 William L. Bowden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:38
CPC Classifications
C; C01; C01G; C01G15/00; C01G15/006; H; H01; H01M; H01M6/00; H01M6/14; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A non-aqueous electrochemical cell comprising an anode, comprised of one or more metals above hydrogen in the EMF series, a cathode depolarizer and a dissolved electrolyte salt characterized in that the electrolyte salt has the formula M(ZX 4 ) n wherein "M" is selected from the group consisting of alkali and alkaline earth metals, "Z" is selected from the group consisting of gallium, indium and thallium, "X" is selected from the group consisting of chlorine, bromine, iodine, fluorine and mixtures thereof, and "n" is 1 when "M" is an alkali metal and "n" is 2 when "M" is an alkaline earth metal.
Claim 2
Dependent Claim
102 words
A non-aqueous electrochemical cell comprising an anode, comprised of one or more metals above hydrogen in the EMF series, a cathode depolarizer and a dissolved electrolyte salt characterized in that the electrolyte salt has the formula M(ZX 4 ) n wherein "M" is selected from the group consisting of alkali and alkaline earth metals, "Z" is selected from the group consisting of gallium, indium and thallium, "X" is selected from the group consisting of chlorine, bromine, iodine, fluorine and mixtures thereof, and "n" is 1 when "M" is an alkali metal and "n" is 2 when "M" is an alkaline earth metal.
Claim 3
Dependent Claim
21 words
The cell of claim 1 wherein said cathode depolarizer is a fluid and functions as a solvent for said electrolyte salt.
Claim 4
Dependent Claim
25 words
The cell of claim 2 wherein said cathode depolarizer is selected from the group consisting of fluid oxyhalides, non-metallic oxides, non-metallic halides and mixtures thereof.
Claim 5
Dependent Claim
15 words
The cell of claim 3 wherein said cathode depolarizer is thionyl chloride (SOCl 2 ).
Claim 6
Dependent Claim
10 words
The cell of claim 1 wherein said metal is lithium.
Claim 7
Dependent Claim
10 words
The cell of claim 4 wherein said metal is lithium.
Claim 8
Dependent Claim
23 words
The cell of claim 1 wherein said electrolyte salt is selected from the group consisting of lithium tetrachlorogallate, lithium tetrachloroindate and lithium tetrachlorothallate.
Claim 9
Dependent Claim
12 words
The cell of claim 1 wherein said electrolyte salt is lithium tetrachlorogallate.
Claim 10
Dependent Claim
12 words
The cell of claim 6 wherein said electrolyte salt is lithium tetrachlorogallate.
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) | 1982-12-03 | 1983-06-04 | 1983-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-03 | 1987-06-04 | 1987-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-03 | 1991-06-04 | 1991-12-04 | $7700.00 | Window Closed / Lapsed |