CATHODE MATERIAL FOR SOFC BASED ON COPPER-CONTAINING LAYERED PEROVSKITE COMPOUNDS Russian patent published in 2015 - IPC H01M4/88 H01M8/12 

FIELD: electricity.

SUBSTANCE: invention relates to cathode material for solid oxide fuel cells (SOFC) based on composite oxides of 3d-metals. Cathode material is based on cathode material for SOFC based on copper-containing layered perovskite compounds with a common formula of Pr_2-xSr_xCuO_4-y, where 0.0<x<1; 0.0≤y≤0.5. Cathode material may be used successfully with SOFC electrolytes based on zirconium dioxide doped with yttrium and scandium (ScYSZ) and lanthanum gallate doped with strontium and magnesium (LSGM) with obligatory presence between ScYSZ and cathode material of an additional coating (buffer layer) based on ceric oxide doped with gadolinium (GDC), and in case of LSGM electrolyte with presence of a protective layer of ceric oxide doped with lanthanum (LCO).

EFFECT: development of cathode material possessing simultaneous high oxygen-ion conductance and coefficient of thermal expansion close to coefficient of thermal expansion intrinsic to solid oxide fuel cells.

4 dwg, 2 ex