Protective-layer-coated-interconnector, cell stack including this protective-layer-coated-interconnector, and fuel cell including the same

Provided is a protective-layer-coated-interconnector, a cell stack, and a fuel cell. A component (particularly Cr) of the 5 interconnector is prevented from diffusing even if the interconnector is exposed to high temperature for a long time. The interconnector has sufficient diffusion barrier-perfor...

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Bibliographic Details
Main Authors Kameda, Tsuneji, Yoshino, Masato, Kobayashi, Shohei, Inuzuka, Riko, Osada, Norikazu, Asayama, Masahiro
Format Patent
LanguageEnglish
Published 18.08.2022
Subjects
ALLOYS
ARTIFICIAL STONE
BASIC ELECTRIC ELEMENTS
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
CONCRETE
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
INORGANIC CHEMISTRY
LIME, MAGNESIA
METALLURGY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
REFRACTORIES
SLAG
TREATMENT OF ALLOYS OR NON-FERROUS METALS
TREATMENT OF NATURAL STONE
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Summary:Provided is a protective-layer-coated-interconnector, a cell stack, and a fuel cell. A component (particularly Cr) of the 5 interconnector is prevented from diffusing even if the interconnector is exposed to high temperature for a long time. The interconnector has sufficient diffusion barrier-performance and protective performance even with a protective layer thinner than conventionally, is inhibited from being degraded through 10 use, and has excellent electrical conductivity, adhesion, heat cycle resistance, and the like. [Solution] A protective-layer-coated-interconnector, a cell stack including the interconnector, and a fuel cell including the interconnector, wherein the interconnector includes an 15 interconnector material and a protective layer on the surface of the interconnector material, wherein the interconnector material is composed of a Fe-Cr alloy containing a rare earth element or a Zr element in a total amount of 1.0 weight% or less, and wherein the protective layer is composed of a Co oxide or an 20 oxide containing: at least one element selected from the group consisting of Al, Ti, Cr, Fe, Ni, Cu, and Zn; and a Co element. [Selected Drawing] FIG. 2A 'Z4 - 1 2 -- 202 2 -203J 11 201--0 203 -_ - - - - - - - - 202 2
Bibliography:Application Number: AU20220200602