Electrolyte composition for solid oxide fuel cell, and solid oxide fuel cell

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United States of America Patent

PATENT NO 9692076
APP PUB NO 20150255819A1
SERIAL NO

14201383

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Abstract

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The invention provides an electrolyte composition for solid oxide fuel cells, and a solid oxide fuel cell. The electrolyte composition has high electrical conductivity over a wide temperature range and is capable of imparting excellent output characteristics to a solid oxide fuel cell. Specifically, the invention provides a scandium oxide-stabilized zirconium oxide-based electrolyte composition used in a solid oxide fuel cell. The composition contains a compound represented by chemical formula (1): (ZrO2)1-x-a(Sc2O3)x(M2O3)a (1), wherein 0.09≦x≦0.11 and 0−2 (S/cm) or more and a power density at 600° C. of 25.0 (mW/cm2) or more. The compound is not undergoing a cubic to rhombohedral phase transition at a temperature range of 25 to 850° C.

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Patent Owner(s)

  • DAIICHI KIGENSO KAGAKU KOGYO CO., LTD.;INSTITUTE OF NATIONAL COLLEGES OF TECHNOLOGY, JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakajima, Yasushi Osaka, JP 57 489
Nakayama, Susumu Niihama, JP 40 609
Tamazaki, Fuminori Osaka, JP 2 0

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