Electrolytic capacitor anode of valve metal oxide
AssigneeCabot Corporation
InventorJames A. Fife
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Abstract
Methods to at least partially reduce valve metal oxides are described wherein the process includes heat treating the valve metal oxide in the presence of a getter material, in an atmosphere which permits the transfer of oxygen atoms from the starting valve metal oxide to the getter material, and for a sufficient time and at a sufficient temperature to form an oxygen reduced valve metal oxide. Valve metal oxides and/or suboxides thereof are also described as well as capacitors containing anodes made from the valve metal oxides and suboxides thereof.
Claims31
An electrolytic capacitor anode comprising a valve, metal oxide having an atomic ratio of metal to oxygen of 1:
- less than 25.
An electolytic capacitor anode comprising a niobium oxide having an atomic ratio of metal to oxygen of 1:less than 25.
Dependencies are inferred from the claim text.