Porous sintered lanthanum manganite bodies and method of manufac

Details Porous sintered lanthanum manganite bodies and method of manufac Porous sintered lanthanum manganite bodies and method of manufac

1996-12-27

1998-08-18

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Having earth feature

264618, 264681, 502101, 502303, H01M 488, H01M 490

Patent

active

057956707

ABSTRACT:
A porous sintered lanthanum manganite body has an alkali metal content of at least 100 ppm and the alkali metal concentration in the lanthanum manganite crystal grains is higher adjacent the grain boundaries than away from the grain boundaries. The body is made by forming a shaped green body of material and firing the shaped green body, the sinterable material has a content of alkali metal of at least 100 ppm. The sintered body has improved strength, and is suitable for example as an air electrode of a solid oxide fuel cell.

REFERENCES:
patent: 3884837 (1975-05-01), Remeika et al.
patent: 4537673 (1985-08-01), Ovshinsky et al.
patent: 4562124 (1985-12-01), Ruka
patent: 4645622 (1987-02-01), Kock
patent: 4835136 (1989-05-01), Gopalakrishnan et al.
patent: 5534468 (1996-07-01), Stephenson

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