Medium-low-temperature solid oxide fuel cell negative electrode material and preparation method thereof
A fuel cell cathode and solid oxide technology, which is applied in the direction of fuel cells, battery electrodes, chemical instruments and methods, etc., can solve problems such as structural instability, and achieve the effect of improving electrical conductivity and fine powder particles
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[0024] Example 1 Medium and low temperature solid oxide fuel cell cathode material Sr 0.9 Y 0.1 CoO 3-δ Synthesis
[0025] 1. The general formula of the cathode material Sr 1-x R x CoO 3-δ In, when R is Y and when x = 0.1, it is Sr 0.9 Y 0.1 CoO 3-δ , Press 0.05mol Sr 0.9 Y 0.1 CoO 3-δ The proportion of, weigh 9.523g Sr(NO 3 ) 2 (Analytical pure), 1.915gY (NO 3 ) 3 ·6H 2 O (analytical purity), 14.554g Co(NO 3 ) 2 ·6H 2 O (analytical purity);
[0026] 2. Slowly add the above materials into a beaker containing 200 mL of deionized water to dissolve them completely, and stir evenly. Add 58.446g of EDTA (analytical purity) and 19.214g of citric acid (analytical purity) to the mixed solution and stir thoroughly. Add NH dropwise to the mixed solution 3 ·H 2 O solution, until the solution becomes transparent, the PH value is adjusted to 8, then add deionized water to 500mL;
[0027] 3. Put the above beaker with the solution on a magnetic stirrer, heat and stir, set the temperature to 90°C, s...
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[0031] Example 2 Low-temperature solid oxide fuel cell cathode material Sr 0.8 Y 0.2 CoO 3-δ Synthesis
[0032] 1. The general formula of the cathode material Sr 1-x R x CoO 3-δ In, when R is Y and when x=0.2, it is Sr 0.8 Y 0.2 CoO 3-δ , Press 0.05mol Sr 0.8 Y 0.2 CoO 3-δ The proportion of, weigh 8.465g Sr(NO 3 ) 2 (Analytical pure), 3.829gY (NO 3 ) 3 ·6H 2 O (analytical purity), 14.554g Co(NO 3 ) 2 ·6H 2 O (analytical purity);
[0033] 2. Slowly add the above materials into a beaker containing 200 mL of deionized water to dissolve them completely, and stir evenly. Add 58.446g of EDTA (analytical purity) and 19.214g of citric acid (analytical purity) to the mixed solution and stir thoroughly. Add NH dropwise to the mixed solution 3 ·H 2 O solution, until the solution becomes transparent, the PH value is adjusted to 8, then add deionized water to 500mL;
[0034] 3. Put the above beaker with the solution on a magnetic stirrer, heat and stir, set the temperature to 90°C, stir evenly to...
Example Embodiment
[0038] Example 3 Medium and low temperature solid oxide fuel cell cathode material Sr 0.7 Y 0.3 CoO 3-δ Synthesis
[0039] 1. The general formula of the cathode material Sr 1-x R x CoO 3-δ In, when R is Y and when x = 0.3, it is Sr 0.7 Y 0.3 CoO 3-δ , Press 0.05mol Sr 0.7 Y 0.3 CoO 3-δ The proportion of, weigh 7.407g Sr(NO 3 ) 2 (Analytical pure), 5.738gY (NO 3 ) 3 ·6H 2 O (analytical purity), 14.554g Co(NO 3 ) 2 ·6H 2 O (analytical purity);
[0040] 2. Slowly add the above materials into a beaker containing 200 mL of deionized water to dissolve them completely, and stir evenly. Add 58.446g of EDTA (analytical purity) and 19.214g of citric acid (analytical purity) to the mixed solution and stir thoroughly. Add NH dropwise to the mixed solution 3 ·H 2 O solution, until the solution becomes transparent, the PH value is adjusted to 8, then add deionized water to 500mL;
[0041] 3. Put the above beaker with the solution on a magnetic stirrer, heat and stir, set the temperature to 90°C, s...
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