Fuel cell catalyst with sulfur dioxide poisoning resistance
A fuel cell, sulfur dioxide technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of Pt failure, slow oxidation, etc., and achieve the effect of improving performance and life, and good anti-sulfur dioxide poisoning performance
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Embodiment 1
[0023] A method for preparing a fuel cell catalyst with anti-sulfur dioxide poisoning performance, the specific steps are:
[0024] 1. Add 100ml tetraethyl orthosilicate, 50mg ruthenium dichloride and 100ml isopropanol into a three-necked flask, and stir for 30 minutes;
[0025] 2. Add 100ml deionized water dropwise to the solution in step 1 and stir;
[0026] 3. Adjust the pH value of the solution in step 2 to 12 with a 1M aqueous NaOH solution, and then heat and reflux at 100° C. for 3 hours;
[0027] 4. The solution in step 3 was cooled, filtered, and vacuum-dried at 80° C. for 24 hours to prepare a fuel cell catalyst.
[0028] The mass fraction of ruthenium in the finally prepared catalyst was 50.5%, and the mass fraction of silicon dioxide was 49.5%.
Embodiment 2
[0030] A method for preparing a fuel cell catalyst with anti-sulfur dioxide poisoning performance, the specific steps are:
[0031] 1. Add 10mg of tetra-n-butyl titanate, 30mg of palladium nitrate, 80mg of carbon nanotubes and 200ml of isopropanol into a three-necked flask, and stir for 30 minutes;
[0032] 2. Add 100ml deionized water dropwise to the solution in step 1 and stir;
[0033] 3. Adjust the pH value of the solution in step 2 to 13 with a 1M NaOH aqueous solution, and then heat to reflux at 200°C for 10 minutes;
[0034] 4. The solution in step 3 was cooled, filtered, and vacuum-dried at 80° C. for 24 hours to prepare a fuel cell catalyst.
[0035] In the finally prepared catalyst, the mass fraction of palladium was 13%, the mass fraction of titanium dioxide was 2.5%, and the mass fraction of carbon nanotubes was 84.5%.
Embodiment 3
[0037] A method for preparing a fuel cell catalyst with anti-sulfur dioxide poisoning performance, the specific steps are:
[0038] 1. Add 30mg of ceric ammonium nitrate, 50mg of chloroplatinic acid, 150mg of amorphous carbon and 200mg of isopropanol into a three-necked flask, and stir for 30 minutes;
[0039] 2. Add 5ml of deionized water dropwise to the solution in step 1 and stir;
[0040] 3. Adjust the pH value of the solution in step 2 to 13 with an aqueous NaOH solution with a concentration of 1M, and then heat and reflux at 130° C. for 500 minutes;
[0041] 4. The solution in step 3 was cooled, filtered, and vacuum-dried at 120° C. for 24 hours to prepare a fuel cell catalyst.
[0042] In the finally prepared catalyst, the mass fraction of platinum was 10%, the mass fraction of cerium oxide was 8.5%, and the mass fraction of amorphous carbon was 81.5%.
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