Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1988-08-01
1990-08-21
Kalafut, Stephen J.
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
429103, 429218, 420528, 420540, 420554, H01M 436, H01M 620, C22C 2100
Patent
active
049505602
ABSTRACT:
The present invention provides a eutectic aluminum base alloy and anode made therefrom which may include at least two elements from the group consisting of scandium, bismuth, cadmium, gallium, indium, lead, mercury, thallium, tin, and zinc. The alloying elements are present in the aluminum alloy in such quantity that they are at least in part liquid at the sites of local reaction on the anode. The preferred alloying components are eutectics of the elements. The alloys and anodes have a high overpotential for water reduction. The purity of the aluminum is preferably at least about 99.99%. Preferred compositions are aluminum-gallium-indium, aluminum-gallium-indium-tin, aluminum-gallium-indium-tin-zinc, aluminum-gallium-indium-zinc, aluminum-gallium-zinc, aluminum-gallium-tin, and aluminum-bismuth-cadium-indium-lead-tin. The alloying elements may preferably be present in a total amount of about 0.01 to 3.0 percent based on total alloy weight. In an alternate embodiment a molten anode may be employed.
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Aluminum Company of America
Glantz Douglas G.
Kalafut Stephen J.
Silverman Arnold B.
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