FIELD: electrode materials.
SUBSTANCE: invention relates to an electrode material based on praseodymium nickelate, which can be used in medium-temperature electrochemical devices such as solid oxide fuel cells, electrolyzers, sensors, and other devices based on proton-conducting electrolytes belonging to the barium cerate-zirconate family. The decrease in the thermal coefficient of linear expansion (TCLE) of the electrode material in the temperature range of 100-1000°C is the technical result of the invention, which is achieved due to the fact that the material contains praseodymium nickelate modified with iron, having the composition PrNi0.4Fe0.6O3-δ.
EFFECT: obtained electrode material does not enter into chemical interaction with electrolytes based on Ba(Ce,Zr)O3-δ and CeO2, which expands the area of its use in electrochemical devices.
1 cl, 4 dwg, 2 tbl
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