Document Type and Number:
Japanese Patent JPS5125230
Kind Code:
B1
Abstract:
In electrodepositing sodium or lithium, the electrolytic bath comprises a solution in liquid sulphur dioxide of a tetrachloro- or tetrabromoaluminate of the corresponding alkali metal, preferably in an amount sufficient to provide a conductivity of at least 5 X 10-5 ohm-1 cm-1 at 22 DEG C. Typically the electrolysis is effected in a cell of glass, polythene, polypropylene or PTFE under an inert atmosphere of argon xeonon or helium at atmospheric pressure with a bath temperature of -10 to -30 DEG C. or under pressure at a temperature below the critical temperature of SO2 whereby sodium may be obtained in molten form. Any non-reactive conductive material may be used as cathode while the anode may be of sodium or lithium as appropriate alone or coated on conductive support or an amalgam. Propylene carbonate or tetrabutyl ammonium perchlorate is included in the electrolyte in comparison test runs but neither assists plating efficiency. Reference is made to the known prior use of a solution in propylene carbonate of lithium salts for electrodepositing lithium and to attempts to deposit potassium and sodium from solution of their iodides or bromides in sulphur dioxide.
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Application Number:
JP6079065A
Publication Date:
July 29, 1976
Filing Date:
October 06, 1965
Export Citation:
International Classes:
B01J19/08; H01M6/14; C25C1/02; C25D3/42; H01M10/36
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