Aluminium battery with electrolyte circulation means
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United States of America Patent
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Dec 27, 1994
Grant Date -
N/A
app pub date -
Apr 22, 1993
filing date -
Sep 18, 1990
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Abstract
An aluminum cell comprises an electrolysis region with a top reservoir and a sump below. Circulation of electrolyte is by convection. The cell is designed to continue operation past the point at which the electrolyte becomes saturated, and an aluminum hydroxide precipitate settles out by gravity in a stagnant lower region of the sump. The anode is preferably of an aluminum alloy containing magnesium, with tin present in the alloy or in the electrolyte. Batteries comprising stacks of such cells are also described.
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