초록 ▼

Ion conducting solid electrolytes are constructed from nanoscale precursor material. Nanocrystalline powders are pressed into disc structures and sintered to the appropriate degree of densification. Metallic material is mixed with 0 to 65 vol % nanostructured electrolyte powders to form a cermet mix

Ion conducting solid electrolytes are constructed from nanoscale precursor material. Nanocrystalline powders are pressed into disc structures and sintered to the appropriate degree of densification. Metallic material is mixed with 0 to 65 vol % nanostructured electrolyte powders to form a cermet mix and then coated on each side of the disc and fitted with electrical leads. The electrical conductivity of a Ag/YSZ/Ag cell so assembled exhibited about an order of magnitude enhancement in oxygen ion conductivity. As an oxygen-sensing element in a standard O.sub.2 /Ag/YSZ/Ag/N.sub.2 set up, the nanocrystalline YSZ element exhibited commercially significant oxygen ion conductivity at low temperatures. The invention can be utilized to prepare nanostructured ion conducting solid electrolytes for a wide range of applications, including sensors, oxygen pumps, fuel cells, batteries, electrosynthesis reactors and catalytic membranes.

대표청구항 ▼

[ What we claim is:] [6.] A nanostructured electrolytic cell for electrochemical, electrocatalytic, or electrosynthesis applications, comprising:an electrolyte layer having at least two sides, the layer produced by,aggregating nanoscale particles of an electrolyte material to form an electrolyte pre

[ What we claim is:] [6.] A nanostructured electrolytic cell for electrochemical, electrocatalytic, or electrosynthesis applications, comprising:an electrolyte layer having at least two sides, the layer produced by,aggregating nanoscale particles of an electrolyte material to form an electrolyte precursor; andsintering the electrolyte precursor at a temperature of less than 1000.degree. C. to densify it and form the electrolyte layer;two electrodes, in contact with each of the two sides of the electrolyte layer respectively, each electrode comprising conductor material; andtwo electrical leads, each in electrical contact with one of the two electrodes.