For cermet inert anode containing oxide and metal phases useful for the electrolytic production of metals

Patent · Tue Jan 01 04:00:00 EST 2002

OSTI ID:874611

Ray, Siba P ^[1]; Liu, Xinghua ^[2]; Weirauch, Douglas A ^[1]

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1. Murrysville, PA
2. Monroeville, PA

A cermet inert anode for the electrolytic production of metals such as aluminum is disclosed. The inert anode comprises a ceramic phase including an oxide of Ni, Fe and M, where M is at least one metal selected from Zn, Co, Al, Li, Cu, Ti, V, Cr, Zr, Nb, Ta, W, Mo, Hf and rare earths, preferably Zn and/or Co. Preferred ceramic compositions comprise Fe.sub.2 O.sub.3, NiO and ZnO or CoO. The cermet inert anode also comprises a metal phase such as Cu, Ag, Pd, Pt, Au, Rh, Ru, Ir and/or Os. A preferred metal phase comprises Cu and Ag. The cermet inert anodes may be used in electrolytic reduction cells for the production of commercial purity aluminum as well as other metals.

• Research Organization: Alcoa Technical Center/Aluminum Company of America (US)
• DOE Contract Number: FC07-98ID13666
• Assignee: Alcoa Inc. (Pittsburgh, PA)
• Patent Number(s): US 6423204
• OSTI ID: 874611
• Country of Publication: United States
• Language: English

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