A kind of solid oxide electrolysis cell supported by oxygen electrode and preparation method thereof
A solid oxide, electrolytic cell technology, applied in electrodes, electrolytic components, electrolytic processes, etc., can solve the problems of slow oxygen release and low electrode porosity, and achieve the effect of improving stability and good application prospects.
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Embodiment 1
[0029] 43.1 g La 0.7 Sr 0.3 FeO 3 Powder, 18.5 g Gd0.1 Ce 0.9 O 2 The powder, 4.3 g of polyethersulfone, 24 g of N-methylpyrrolidone and 0.43 g of polyvinylpyrrolidone were placed in a ball-milling jar, and ball-milled for 60 hours to form a uniform slurry. A screen with a mesh opening of 70 μm was placed between the two molds. The slurry was poured into the assembled mold, and the upper surface of the slurry was 1.0 mm above the screen, and water was poured on top of the slurry to induce phase transition. Demould after 0.3h of phase inversion, and removed the screen. The film body was immersed in water for 2 hours to replace the solvent. Then, the film body was dried in an oven at 80°C for 10h. Finally, the film body was pre-fired, raised to 400 °C at 1 °C / min, kept for 1 h, the polymer was removed, and then raised to 1000 °C at 2 °C / min, kept for 2 h, to obtain a pre-fired film body. Separate the electrolyte powder 6g Gd 0.1 Ce 0.9 O 2 (GDC) powder and 6g (Y 2 O...
Embodiment 2
[0032] 58.7g La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 Powder, 19.2g Gd 0.1 Ce 0.9 O 2 The powder, 5.6 g of polysulfone, 22.3 g of N-methylpyrrolidone and 0.52 g of polyvinylpyrrolidone were placed in a ball-milling jar, and ball-milled for 7 hours to form a uniform slurry. A screen with a mesh opening of 150 μm was placed between the two molds. The slurry was poured into the assembled mold, and the upper surface of the slurry was 3 mm above the screen, and water was poured on top of the slurry to induce a phase transition. The mold was demolded after 3 h of phase inversion, and the screen was removed. The film body was soaked in water for 20h to replace the solvent. Then, the film body was dried in an oven at 80°C for 10h. Finally, the film body was pre-fired, raised to 400 °C at 1 °C / min, kept for 1 h, the polymer was removed, and then raised to 1000 °C at 2 °C / min, kept for 2 h to obtain a pre-fired oxygen electrode support body. A cell was prepared on an oxygen electrod...
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