Porous sintered bodies and solid oxide fuel cells using such porous sintered bodies as air electrodes
AssigneeNGK Insulators, Ltd.
InventorsTakao Soma, Tomonori Takahashi, Shinji Kawasaki, Hirotake Yamada, Kazuyo Mori
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Abstract
A porous sintered body is composed of a perovskite-type composite oxide, wherein A-site of the composite oxide are occupied by one or more kinds of first metallic elements selected from the group consisting of calcium and strontium, one or more kinds of second metal elements selected from the group consisting of rare earth elements and yttrium excluding lanthanum and cerium, and lanthanum, the above one or more kinds of the first metallic elements amount to 5 to 70 mol % of the A-sites, and manganese is contained in B-sites of the composite oxide.
Claims53
A porous sintered body comprising a perovskite composite oxide, wherein A-sites of said composite oxide are occupied by (i) at least one first metallic element selected from the group consisting of calcium and strontium, (ii) at least one second metallic element selected from, the group consisting of scandium, yttrium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium, and (iii) lanthanum, wherein said at least one first metallic element amounts to 5 to 70 mol % of said A-sites, and manganese is contained in B-sites of said composite oxide.
Dependencies are inferred from the claim text.