DOUBLE-LAYER SUPPORTING CATHODE MANUFACTURING METHOD FOR SOLID OXIDE FUEL CELLS Russian patent published in 2014 - IPC H01M8/10 

FIELD: electricity.

SUBSTANCE: double-layer supporting cathode manufacturing method for solid oxide fuel cells includes generation of electrode and collector layers for a cathode and their sintering, at that the collector layer for the cathode is formed of powdered strontium lanthanum manganite while its electrode layer is made of a mixture of powdered strontium lanthanum manganite and zirconium oxide stabilised by yttrium oxide. For the purpose of the collector layer formation a powder of strontium lanthanum manganite is received by a solid-phase synthesis of a La_0.6Sr_0.4MnO₃ compound, for the electrode layer formation - by a solid-phase synthesis of a La_0.75Sr_0.2MnO₃ compound, the electrode layer is prepared of the mixture of powdered strontium lanthanum manganite and zirconium oxide stabilised by yttrium oxide with their mass ratio of 1:1, to the powder of La_0.6Sr_0.4MnO₃ compound a pore agent is added in a quantity of 15 wt %; the collector layer is made of this powder, which is further annealed at 1350°C during 2 hours, the obtained layer is covered by the electrode layer in the form of an alcohol suspension of the mixture of powdered strontium lanthanum manganite and zirconium oxide stabilised by yttrium oxide, the layers are sintered at 1200°C during 2 hours.

EFFECT: simplifying manufacture of the double-layer supporting cathode, increasing the level of its conductivity and electrochemical activity.

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