PEROVSKITE STRUCTURE, METHOD FOR PRODUCTION THEREOF, ELECTRODE FOR FUEL CELL COMPRISING PEROVSKITE STRUCTURE, AND FUEL CELL STACK CONTAINING PEROVSKITE STRUCTURE Russian patent published in 2019 - IPC H01M4/90 H01M8/12 

FIELD: chemistry.

SUBSTANCE: invention relates to perovskite structures for use as electrodes in solid oxide fuel cells. Perovskite structure containing first element X, strontium, iron, cobalt, oxygen and tungsten, wherein first element X is barium and / or lanthanum, and the structure comprises a region of single perovskite and a double perovskite region. Molar percentage of tungsten ranges from 5 % to 10 %. Method of producing perovskite structure involves mixing initial materials, wherein the starting materials include a first element X, strontium, iron, cobalt, oxygen and tungsten to obtain a mixture; heating mixture to first temperature during first period of time to produce single perovskite and heating mixture to second temperature during second period of time to obtain double perovskite, wherein first element X is barium and/or lanthanum.

EFFECT: invention relates to structures for use in fuel cells.

25 cl, 21 dwg, 1 tbl