TUBULAR SOLID-OXIDE FUEL ELEMENT WITH METALLIC SUPPORT, ITS TUBULAR METALLIC POROUS BASIC LAYER AND METHODS OF THEIR PRODUCTION Russian patent published in 2008 - IPC H01M8/12 H01M8/02 

FIELD: engines and pumps.

SUBSTANCE: invention proposes a tubular solid-oxide fuel element with a metallic support containing a tubular metallic basic layer, a tubular pack of functional layers in concentric interface contact with the basic layer, the metallic porous basic layer being made from metal or metal alloy powders. The said basic layer is made up of, at least, two layers and the said powders possessing anti-oxidation properties at 700°C to 900°C. The tubular functional layers pack incorporates additionally a protective layer with functional layers being arranged in the following sequence, i.e. an anode layer, a solid-gas electrolyte layer, a protective layer and a cathode layer. The method of producing the aforesaid element comprises the following jobs, i.e. (a) production of, at least, two-layer metallic porous basic layer from metal or metal alloys, (b) application of anode layer on the basic layer, the anode layer being composed of the nickel-zirconium dioxide cermet stabilised by yttrium oxide, (c) application of the zirconium dioxide solid-gas electrolyte stabilised by yttrium oxide in the metal-organic complex thermolysis process on the anode layer, (d) application of the GDC () protective layer on the electrolyte, (e) application of the cathode layer composed of LSM (solid solutions of the La_0.8Si_0.2MnO₃ composition) on the GDC protective layer.

EFFECT: high-temperature fuel elements sustain heat treatment without shrinkage and reduction in porosity.

30 cl, 4 dwg