Modified oxygen reduced valve metal oxides
AssigneeCabot Corporation
InventorsJonathon L. Kimmel, Randall V. Redd
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Abstract
Pressed material such as anodes are described and formed from oxygen reduced oxide powders using additives, such as binders and/or lubricants. Methods to form the pressed material are also described, such as with the use of atomizing, spray drying, fluid bed processing, microencapsulation, and/or coacervation.
Claims88
Oxygen-reduced valve metal oxide particles having an average primary particle size of from 1 micron to 10.5 microns and a flow of from about 20 mg/s to about 270 mg/s, wherein said oxygen-reduced valve metal oxide particles are oxygen-reduced niobium oxide particles.
Agglomerated oxygen-reduced valve metal oxide comprising agglomerate sizes of less than 425 microns, including agglomerate sizes from 150 to 300 microns, wherein said agglomerated oxygen-reduced valve metal oxide is oxygen-reduced niobium oxide.
Agglomerated oxygen-reduced valve metal oxide having a flow of from about 20 mg/s to about 270 mg/s.
Oxygen-reduced niobium oxide particles having an average particle size of from 1 micron to 10.5 microns, having a flow of from about 20 mg/s to about 270 mg/s, a specific surface area of about 0.5 m2/g or higher, an apparent density of less than about 2.0 g/cc, and a capacitance of from 20,000 CV/g to about 300,000 CV/g when formed into an anode with a press density of 3.5 g/cc, a sintering temperature of 1,300° C. for 10 minutes, a formation voltage of 30 volts, and a formation temperature of 60° C.
Dependencies are inferred from the claim text.