ELECTRODE MATERIAL BASED ON PRASEODYMIUM NICKELATE FOR ELECTROCHEMICAL DEVICES Russian patent published in 2022 - IPC H01M4/48 H01M4/86 

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 PrNi_0.4Fe_0.6O_3-δ.

EFFECT: obtained electrode material does not enter into chemical interaction with electrolytes based on Ba(Ce,Zr)O_3-δ and CeO₂, which expands the area of its use in electrochemical devices.

1 cl, 4 dwg, 2 tbl