Low-temperature proton conductor solid oxide electrolytic cell
A technology of solid oxides and proton conductors, applied in the direction of electrolysis process, electrolysis components, electrodes, etc., can solve the problems of high cost, difficult waste heat utilization, high operating temperature, etc., and achieve the effect of lowering the temperature
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Embodiment 1
[0021] Adopt NiO and BaCe 0.6 Zr 0.25 Y 0.15 O 3-δ After mixing at a weight ratio of 50:50, a 0.5mm thick hydrogen electrode substrate was prepared by dry pressing and sintered at 1400°C for 4 hours to obtain a hydrogen electrode; a layer containing BaCe was coated on it 0.6 Zr 0.25 Y 0.15 O 3-δ The slurry with a thickness of 20μm is sintered at 1600°C for 2h to obtain a hydrogen electrode / electrolyte assembly; the BaCe 0.6 Zr 0.25 Y 0.15 O 3-δ And BaCo 0.4 Fe 0.4 Zr 0.1 Y 0.1 O 3-δ After mixing at a weight ratio of 30:70, an oxygen electrode was prepared by screen printing and sintered at 1000°C for 2 hours to obtain an electrolytic cell.
[0022] Use an electrochemical workstation to test the electrochemical performance of the solid oxide electrolytic cell. The performance test result of the solid oxide electrolytic cell shows that at 600°C and 50ml / min of water vapor, it can generate 0.4A / cm at an electrolysis voltage of 1.25V 2 The electrolysis current.
Embodiment 2
[0024] Adopt NiO and BaCe 0.6 Zr 0.25 Y 0.15 O 3-δ After mixing at a weight ratio of 70:30, a 1.5mm thick hydrogen electrode substrate was prepared by dry pressing and sintered at 1200°C for 4 hours to obtain a hydrogen electrode; a layer containing BaCe was coated on it 0.6 Zr 0.25 Y 0.15 O 3-δ The slurry with a thickness of 50μm is sintered at 1700°C for 2h to obtain a hydrogen electrode / electrolyte assembly; the BaCe 0.6 Zr 0.25 Y 0.15 O 3-δ And BaCo 0.2 Fe 0.5 Zr 0.2 Y 0.1 O 3-δ After mixing at a weight ratio of 10:90, an oxygen electrode was prepared by screen printing and sintered at 1400°C for 2 hours to obtain an electrolytic cell.
[0025] Use an electrochemical workstation to test the electrochemical performance of the solid oxide electrolytic cell. The performance test result of the solid oxide electrolytic cell shows that 0.3A / cm can be generated under the electrolysis voltage of 1.5V when 50ml / min water vapor is passed through at 400℃ 2 The electrolysis current.
Embodiment 3
[0027] Adopt NiO and BaCe 0.6 Zr 0.25 Y 0.15 O 3-δ After mixing at a weight ratio of 30:70, a 1mm thick hydrogen electrode substrate was prepared by dry pressing, and sintered at 1200°C for 4 hours to obtain a hydrogen electrode; a layer containing BaCe was coated on it 0.6 Zr 0.25 Y 0.15 O 3-δ The slurry with a thickness of 10μm is sintered at 1400°C for 2h to obtain a hydrogen electrode / electrolyte assembly; the BaCe 0.6 Zr 0.25 Y 0.15 O 3-δ And BaCo 0.4 Fe 0.2 Zr 0.3 Y 0.1 O 3-δ After mixing at a weight ratio of 40:60, an oxygen electrode was prepared by screen printing and sintered at 1200°C for 2 hours to obtain an electrolytic cell.
[0028] Use an electrochemical workstation to test the electrochemical performance of the solid oxide electrolytic cell. The performance test result of the solid oxide electrolytic cell shows that at 300°C and 50ml / min of water vapor, 0.2A / cm can be generated at an electrolysis voltage of 1.5V 2 The electrolysis current.
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