An aluminium battery comprises an aqueous alkaline electrolyte and an anode which is an alloy of aluminium containing magnesium and/or calcium. Tin is present in the electrolyte (as stannate at a concentration of 0.001 to 0.01 M) and/or in the anode (at a concentration of at least 0.005%). The batteries operate at high coulombic efficiency at both high and low current densities. Preferred conditions of operation comprise drawing current at an average current density of 5 to 400 mA/cm<2> of anode surface for at least one hour, and introducing seed crystals into the electrolyte to aid precipitation of aluminium values from the electrolyte.
申请公布号
NO893201(D0)
申请公布日期
1989.08.08
申请号
NO19890003201
申请日期
1989.08.08
申请人
ALCAN INTERNATIONAL LIMITED
发明人
HUNTER, JOHN ANTHONY;SCAMANS, GEOFFREY MACK;O'CALLAGHAN, WILFRED BERNARD;WYCLIFFE, PAUL ANTHONY