FIELD: ceramics.
SUBSTANCE: invention provides relatively inexpensive fluorite-type ceramic material suitable to be employed in production of ion- and/or electron-conducting ceramic products, in particular membranes for separating oxygen from oxygen-containing gas mixture, and for electrolytes in fuel cells and electrochemical reactors. Material is depicted by general formula AxByO2-δ, where x ≤ 1, y ≤ 1, and -1< δ <1; A represents one or several metals selected from Ti, Zr, Hf, Ce, Th, or their mixtures; B at least two metals selected from 2A, 3B, and lanthanoid group metals.
EFFECT: increased oxygen ion or mixed oxygen ion and electron conductance at high and middle temperatures.
2 cl
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Year |
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|
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|
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