A kind of tubular solid oxide fuel cell anode support body and preparation method thereof
A solid oxide, anode support technology, applied in solid electrolyte fuel cells, fuel cells, circuits, etc., can solve the problems of unstable preparation process, difficult industrialization, difficulty in anode power collection, etc., and achieve good electrochemical performance, The effect of low cost and improved collection efficiency
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Embodiment 1
[0088] Example 1: Preparation and performance characterization of anode-supported tubular solid oxide fuel cells
[0089] Mix the fuel cell anode mixed powder (NiO and 8YSZ), PVA, triethanolamine, and graphite powder uniformly according to the mass ratio of 100:10:3:10, and prepare a slurry suspension with pure water. The solid content is 60%; Use a high-temperature spray granulator to spray and granulate the anode powder slurry. The working temperature of the spray dryer is set at 180°C, and the slurry spray speed is set at 20ml / min. After granulation, the modified anode mixture is obtained. The particle size distribution of the powder is 1-10 μm as tested by the scanning electron microscope; the anode granulation powder is injected into the tubular mold and filled with vibration, and then isostatically pressed, and the isostatic press is loaded at a pressurization rate of 10MPa / min After reaching 200MPa, keep the pressure for 30 minutes, remove the pressure and demould to ob...
Embodiment 2
[0094] Example 2: Performance comparison of tubular anode support cells prepared by extrusion, impregnation, and isostatic pressing. The mixed powder (NiO and 8YSZ), PVA, triethanolamine, and graphite powder of the fuel cell anode were mixed according to the mass ratio of 100:10 : 3:10 After uniform mixing, take three parts of equal mass and prepare tubular anode supports by extrusion, impregnation and isostatic pressing respectively, that is, extrude after preparing slurry, pull and impregnate after preparing slurry Dry molding, isostatic pressing after spray granulation (see Example 1), adjust the size and thickness of the anode support green body by controlling the size of the extrusion die, the number of dips, and the size of the isostatic pressing die, so that the three methods The size and thickness of the green bodies obtained are consistent (take three green bodies with the same size and thickness respectively), and the green bodies are put into a muffle furnace and pre...
Embodiment 3
[0098] Example 3: Performance comparison of anode-supported tubular solid oxide fuel cells with different pore-forming agent contents The fuel cell anode mixed powder (NiO and 8YSZ), PVA, triethanolamine, and graphite powder were in a mass ratio of 100:10 : 3:12 uniform mixing to obtain anode mixed powder sample 1, and in addition, uniformly mix according to the mass ratio of 100:10:3:8 to obtain anode mixed powder sample 2, and prepare slurry with a solid content of 60% with pure water respectively material suspension; using a high-temperature spray granulator to spray and granulate the anode powder slurry respectively, the working temperature of the spray dryer is set to 180°C, the slurry spray speed is set to 25ml / min, and the modified product is obtained after granulation respectively. The two kinds of anode mixed powders were tested by scanning electron microscope, and their particle sizes were distributed in the range of 1-10 μm; the anode granulated powders were respecti...
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