Skip to Content
Find More Like This
Return to Search

Inert anode containing oxides of nickel, iron and zinc useful for the electrolytic production of metals

United States Patent

July 23, 2002
View the Complete Patent at the US Patent & Trademark Office
An inert anode for the electrolytic production of metals such as aluminum is disclosed. The inert anode includes a ceramic oxide material preferably made from NiO, Fe.sub.2 O.sub.3 and ZnO. The inert anode composition may comprise the following mole fractions of NiO, Fe.sub.2 O.sub.3 and ZnO: 0.2 to 0.99 NiO; 0.0001 to 0.8 Fe.sub.2 O.sub.3 ; and 0.0001 to 0.3 ZnO. The inert anode may optionally include other oxides and/or at least one metal phase, such as Cu, Ag, Pd, Pt, Au, Rh, Ru, Ir and/or Os. The Ni--Fe--Co--O ceramic material exhibits very low solubility in Hall cell baths used to produce aluminum.
Ray; Siba P. (Murrysville, PA), Weirauch, Jr.; Douglas A. (Murrysville, PA), Liu; Xinghua (Monroeville, PA)
Alcoa Inc. (Pittsburgh, PA)
09/ 542,318
April 4, 2000
GOVERNMENT CONTRACT The United States Government has certain rights in this invention pursuant to Contract No. DE-FC07-98ID13666 awarded by the United States Department of Energy.