Dendrite-inhibiting electrolytic solution and rechargeable aqueous zinc-halogen cell containing the solution
First Claim
1. 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, R1 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.
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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.
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Citations
10 Claims
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1. 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, R1 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.
- View Dependent Claims (2, 3, 4, 5)
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6. 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, R1 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.
- View Dependent Claims (7, 8, 9, 10)
Specification