US4074028A
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Dendrite-inhibiting electrolytic solution and rechargeable aqueous zinc-halogen cell containing the solution
Assignee: General Electric Co
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Filing: 1977-05-09
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Granted: 1978-02-14
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Expires: 1997-05-09
Abstract
Abstract A dendrite-inhibiting electrolytic solution and rechargeable aqueous zinc-halogen cell containing the solution are described. The electrolytic solution contains a zinc compound, a non-ionic surfactant additive of oxaalkyl or polyoxaalkyl perfluoroalkane sulfonamide in an amount of from 0.001 to 10 weight percent of the solution, and an organic solubilizer in an amount from 5 to 50 weight percent of the solution. The cell includes a casing, a pair of spaced apart porous electrode substrates in the casing, an ion exchange membrane separator between the electrode substrates defining a positive and a negative electrode compartment, an electrolytic solution containing a zinc compound in the positive compartment, and the above electrolytic solution containing the additive and the solubilizer in the negative zinc electrode compartment.
Inventors
- 👤 Fritz G. Will
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:09
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/365; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
102 words
A dendrite-inhibiting elecrtrolytic solution comprising a solution containing a zinc compound, from 0.001 to 10 weight percent of a non-ionic surfactant additive having the formula: ##STR13## where m is a number from 3 to 15, R is an alkyl radical having from 1 to 10 carbon atoms, R 1 is a member of a group consisting of hydrogen and methyl radical, n is a number for the group from 0 to 30, and the surfactant additive has a molecular weight range of approximately 550 - 1500, and an organic solubilizer in an amount from 5 to 50 weight percent of the solution.
Claim 2
Dependent Claim
102 words
A dendrite-inhibiting elecrtrolytic solution comprising a solution containing a zinc compound, from 0.001 to 10 weight percent of a non-ionic surfactant additive having the formula: ##STR13## where m is a number from 3 to 15, R is an alkyl radical having from 1 to 10 carbon atoms, R 1 is a member of a group consisting of hydrogen and methyl radical, n is a number for the group from 0 to 30, and the surfactant additive has a molecular weight range of approximately 550 - 1500, and an organic solubilizer in an amount from 5 to 50 weight percent of the solution.
Claim 3
Dependent Claim
22 words
A dendrite-inhibiting electrolytic solution as in claim 1, in which there is present one percent by weight of the non-ionic surfactant additive.
Claim 4
Dependent Claim
22 words
A dendrite-inhibiting electrolytic solution as in claim 1, in which there is present one-tenth percent by weight of the non-ionic surfactant additive.
Claim 5
Dependent Claim
35 words
A dendrite-inhibiting electrolytic solution as in claim 1, in which there is present one percent by weight of the non-ionic surfactant additive, and 25 percent by weight of an organic solvent complex solubilizer of butyrolactone.
Claim 6
Dependent Claim
35 words
A dendrite-inhibiting electrolytic solution as in claim 1, in which there is present 0.1 percent by weight of the non-ionic surfactant additive, and 5 percent by weight of an organic solvent complex solubilizer of dimethylsulfonamide.
Claim 7
Dependent Claim
150 words
A rechargeable aqueous zinc-halogen cell comprising a casing, a pair of spaced apart porous electrode substrates in the casing, an ion exchange membrane between the electrode substrates defining a positive and a negative electrode compartment, an electrolytic solution containing a zinc compound in both compartments, from 0.001 to 10 weight of the solution of a non-ionic surfactant additive in the negative compartment, the non-ionic surfactant additive having the formula: ##STR14## where m is a number from 3 to 15, R is an alkyl radical having from 1 to 10 carbon atoms, R 1 is a member of a group consisting of hydrogen and methyl radical, n is a number for the group from 0 to 30, and the surfactant additive has a molecular weight range of approximately 550 - 1500, and an organic solubilizer in an amount from 5 to 50 weight percent of the solution in the negative compartment.
Claim 8
Dependent Claim
150 words
A rechargeable aqueous zinc-halogen cell comprising a casing, a pair of spaced apart porous electrode substrates in the casing, an ion exchange membrane between the electrode substrates defining a positive and a negative electrode compartment, an electrolytic solution containing a zinc compound in both compartments, from 0.001 to 10 weight of the solution of a non-ionic surfactant additive in the negative compartment, the non-ionic surfactant additive having the formula: ##STR14## where m is a number from 3 to 15, R is an alkyl radical having from 1 to 10 carbon atoms, R 1 is a member of a group consisting of hydrogen and methyl radical, n is a number for the group from 0 to 30, and the surfactant additive has a molecular weight range of approximately 550 - 1500, and an organic solubilizer in an amount from 5 to 50 weight percent of the solution in the negative compartment.
Claim 9
Dependent Claim
23 words
A rechargeable aqueous zinc-halogen cell as in claim 6, in which there is present 1 percent by weight of the non-ionic surfactant additive.
Claim 10
Dependent Claim
23 words
A rechargeable aqueous zinc-halogen cell as in claim 6, in which there is present one-tenth percent by weight of the non-ionic surfactant additive.
Claim 11
Dependent Claim
36 words
A rechargeable aqueous zinc-halogen cell as in claim 6, in which there is present 1 percent by weight of the non-ionic surfactant additive, and 25 percent by weight of an organic solvent complex solubilizer of butyrolactone.
Claim 12
Dependent Claim
36 words
A rechargeable aqueous zinc-halogen cell as in claim 6, in which there is present 0.1 percent by weight of the non-ionic surfactant additive, and 5 percent by weight of an organic solvent complex solubilizer of dimethylsulfonamide.
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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |