Method for inhibiting corrosion in particulate zinc
A method is described for the inhibition of corrosion in particulate zinc, which comprises the step of subjecting said zinc in the form of an alkaline slurry to treatment by a corrosion inhibiting effective amount of a corrosion inhibitor which is at least one oxide selected from the group consisting of oxides of antimony, bismuth, cadmium, gallium, indium, lead, mercury, thallium and tin, wherein zinc has been obtained by an electrolytic process for regeneration of zinc in an at least partially spent slurry for use in metal-air batteries which slurry comprises an admixture of at least components (a) and (b), of the following components (a), (b), (c), (d), (e), (f) and (g): (a) zinc which has been at least partly oxidized to an oxidation product selected from zinc oxide and zincates; (b) an aqueous solution of at least one Group 1a metal comprising anions selected from the group consisting of hydroxide and zincate; (c) an inorganic inhibitor ingredient effective to inhibit an interaction of zinc and at least one Group 1a metal hydroxide in the aqueous solution, which would otherwise result in an evolution of hydrogen gas; (d) a gelling agent; (e) a filler selected from the group consisting of particulate and fibrous fillers; (f) a labelling agent; (g) a dissolved electrolyte extender.
- Assignee:
- Electric Fuel Ltd., Jerusalem (Israel)
- Patent Number(s):
- US 5232798; A
- Application Number:
- PPN: US 7-636426
- OSTI ID:
- 6481611
- Resource Relation:
- Patent File Date: 31 Dec 1990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ZINC
CORROSION PROTECTION
ZINC-AIR BATTERIES
CORROSION INHIBITORS
ELECTROCHEMICAL CORROSION
ELECTROLYTES
HYDROXIDES
OXIDES
SLURRIES
ZINC OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CORROSION
DISPERSIONS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELEMENTS
HYDROGEN COMPOUNDS
METAL-GAS BATTERIES
METALS
MIXTURES
OXYGEN COMPOUNDS
SUSPENSIONS
ZINC COMPOUNDS
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries