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US 2001/0018989 A1Published application
Ion conductor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorNoboru Taniguchi
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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorNoboru Taniguchi
Estimating the term…
The invention presents an ion conductor with high reliability, that is one of the following perovskite oxides: {circle over (1)} perovskite oxide of the composition BaZr1-xCexO3-p (0<x<0.8); {circle over (2)} perovskite oxide consisting essentially of Ba, Zr, Ce and O, and substantially conducting protons only; {circle over (3)} perovskite oxide of the composition BaZr1-x-yCexMyO3-p (M, O≦x<1,0<y<1, x+y<1) that is a single-phase polycrystal of cubic, tetragonal or orthorhombic crystal structure whose unit cell edges a, b and c (with a≧b≧c) satisfy 0.8386 nm<a<0.8916 nm and b/a≧0.90; {circle over (4)} perovskite oxide of the same composition as in {circle over (3)} that is a single-phase sintered product with a density of at least 96% of the theoretical density; and {circle over (5)} perovskite oxide of the same composition as in {circle over (3)} that is a single-phase sintered product with 1 to 30 μm granular diameter.
An ion conductor that is a perovskite oxide having the composition BaZr1-xCexO3-p, wherein x is larger than zero but not larger than 0.8, and p is larger than zero but smaller than 1.5.
An ion conductor that is a perovskite oxide essentially consisting of Ba, Zr, Ce and O, and substantially conducting protons only.
An ion conductor that is a perovskite oxide having the composition BaZr1-x-yCexMyO3-p, wherein M is a trivalent substituent element, x is at least zero but smaller than 1, y is larger than zero but smaller than 1, x+y is larger than zero but smaller than 1, and p is larger than zero but smaller than 1.5, wherein the ion conductor is a substantially single-phase polycrystal of cubic, tetragonal or orthorhombic crystal system whose unit cell axes a, b and c (with a≧b≧c) satisfy 0.8386 nm<a<0.8916 nm and b/a≧0.90.
An ion conductor that is a perovskite oxide having the composition BaZr1-x-yCexMyO3-p, wherein M is a trivalent substituent element, x is at least zero but smaller than 1, y is larger than zero but smaller than 1, x+y is larger than zero but smaller than 1, and p is larger than zero but smaller than 1.5, wherein the ion conductor is a substantially single-phase sintered product with a density of at least 96% of the theoretical density.
An ion conductor that is a perovskite oxide having the composition BaZr1-x-yCexMyO3-p, wherein M is a trivalent substituent element, x is at least zero but smaller than 1, y is larger than zero but smaller than 1, x+y is larger than zero but smaller than 1, and p is larger than zero but smaller than 1.5, wherein the ion conductor is a substantially single-phase sintered product with granular diameter of at least 1 μm and not more than 30 μm.
Dependencies are inferred from the claim text.