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US 4,792,430 AGranted
Aluminum anode alloy
AssigneeAluminum Company of America
InventorRalph L. Horst
Life of this patent
Estimating the term…
Abstract
An aluminum alloy that may be used as an anode in a battery displays high voltage and high coulombic efficiency when used with a caustic electrode by the presence of about 0.03 to 0.2 percent tin. Additionally, about 0.03 to 0.07 percent gallium and/or 0.002 to 0.006 percent silicon may be added. It is preferred that the purity of the aluminum be at least as pure as 99.995%. A heat treatment enhances voltage and efficiency.
Claims13
An aluminum alloy comprising:
- about 0.03 to 0.20 percent tin,
- about 0.03 to 0.07 percent gallium,
- about 0.002 to 0.006 percent silicon,
- the remainder being aluminum which is at least as pure as 99.995 percent, and impurities, and
- said impurities including not more than about 10 parts per million iron, 10 parts per million zinc and 2 parts per million lead.
2 more elements
An aluminum alloy comprising:
- about 0.05 to 0.1 percent tin, about 0.03 to 0.07 percent gallium, about 0.002 to 0.006 percent silicon, and the remainder being aluminum which is at least as pure as 99.995 percent, and impurities, and said impurities including not more than about 10 parts per million iron, 10 parts per million zinc and 2 parts per million lead.
An aluminum alloy anode comprising:
- about 0.03 to 0.20 percent tin,
- about 0.03 to 0.07 percent gallium,
- about 0.002 to 0.006 percent silicon,
- the remainder being aluminum which is at least as pure as 99.995 percent, and impurities, and
- said impurities including not more than about 10 parts per million iron, 10 parts per million zinc and 2 parts per million lead.
2 more elements
An aluminum alloy anode comprising:
- about 0.05 to 0.1 percent tin, about 0.03 to 0.07 percent gallium, about 0.002 to 0.006 percent silicon, and the remainder being aluminum which is at least as pure as 99.995 percent, and impurities, and said impurities including not more than about 10 parts per million iron, 10 parts per million zinc and 2 parts per million lead.
An aluminum anode for use with an alkaline electrolyte comprising:
- about 0.05 to 0.1 percent tin, about 0.03 to 0.07 percent gallium, about 0.002 to 0.006 percent silicon, and the remainder being aluminum and impurities, and said impurities including not more than about 10 parts per million, iron 10 parts per million zinc and 2 parts per million lead.
Dependencies are inferred from the claim text.