CERAMIC MATERIAL FOR INTERCONNECTORS OF FUEL ELEMENTS AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2016 - IPC H01M8/10 H01M8/12 

FIELD: chemistry.

SUBSTANCE: invention relates to solid oxide fuel cells (SOFC), and specifically to ceramic material. Ceramic material for interconnectors of fuel elements is an indium oxide-based solid solution with dopant in following ratio of components, mol% indium oxide - 92-98 mol%, dopant - 2-8 mol%. Synthesis of ceramic material for interconnectors of fuel elements in claim 1 is performed by co-precipitation of hydroxides, wherein initial reagents selected are salts In(NO₃)₃·5H₂O, ZrO(NO₃)₂·2H₂O, HfOCl₂·6H₂O, from which are prepared diluted aqueous solutions, after which precipitation is carried out with ammonium hydroxide with intense stirring with introduction into ammonia solution of a surfactant, and formed gel-like precipitate is separated from mother solution by filtration and dried at 100 °C, followed by calcining obtained powder at 300 °C to crystallisation thereof in a cubic structure In₂O₃, obtained compacts from synthesised powder is pressed under pressure of 150 MPa and sintered in air at 1,400 °C for 2 hours with a heating rate of 350-400 °C/h.

EFFECT: obtained using disclosed method ceramic based on In₂O₃ has higher specific electric conductivity compared with "chromite-lanthanum" compositions and may be recommended for making interconnectors of solid oxide fuel cells, operating at medium, and high temperatures, which is technical result of invention.

4 cl, 8 dwg, 1 tbl