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Cathode for aluminum producing electrolytic cell

United States Patent

April 13, 2004
View the Complete Patent at the US Patent & Trademark Office
A method of producing aluminum in an electrolytic cell comprising the steps of providing an anode in a cell, preferably a non-reactive anode, and also providing a cathode in the cell, the cathode comprised of a base material having low electrical conductivity reactive with molten aluminum to provide a highly electrically conductive layer on the base material. Electric current is passed from the anode to the cathode and alumina is reduced and aluminum is deposited at the cathode. The cathode base material is selected from boron carbide, and zirconium oxide.
Brown; Craig W. (The Dalles, OR)
Northwest Aluminum Technologies (Seattle, WA)
10/ 126,104
April 22, 2002
The government has rights in this invention pursuant to Contract No. DE-FC07-00ID13901 awarded by the Department of Energy.