Electrooxidation and hydrogen evolution device and application
An electro-oxidation and hydrogen evolution technology, applied in the field of electrolysis, can solve the problems of low energy efficiency, slow hydrogen evolution reaction, low commercial value of oxygen products, etc., and achieve the effect of high energy conversion efficiency and great application prospects.
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[0042]The preparation method of described Pt-based catalyst comprises the following steps:
[0043] S1. Stir and dissolve the precursor of the noble metal or its alloy with oleylamine and oleic acid, heat to 130°C, add tungsten hexacarbonyl, and heat to 230-250°C for 30-60 minutes; preferably, add tungsten hexacarbonyl and heat to React at 235-245°C for 40-50 minutes. In this example, heat to 240° C. for 40 minutes. The precursor of the metal or its alloy is platinum, ruthenium, rhodium, palladium, iridium, gold, nickel, iron, manganese, cobalt, copper, chromium, tin, lanthanum, cerium, samarium, terbium, dysprosium and thulium acetylacetonate salt, acetate or chloride. Preferred is: platinum acetylacetonate.
[0044] S2, centrifuge washing after reaction, and grind after vacuum drying, then dissolve the obtained powder with an organic solvent, add the carrier to mix, ultrasonic, stir and continue the reaction for 12h, to obtain the carrier / noble metal or its alloy nanopart...
Embodiment 1
[0047] Preparation of carbon-supported platinum catalyst:
[0048] Disperse 20 mg of platinum acetylacetonate in a mixed solution of 2 mL of oleic acid and 8 mL of oleylamine, in an Ar atmosphere, stir vigorously and heat to 130 degrees Celsius; add 50 mg of tungsten hexacarbonyl, stir slowly, and the temperature rises to 240 degrees Celsius and keep for 40 minutes; after the reaction Wash by centrifugation, dry in vacuum and grind, then disperse the obtained powder with butylamine, add 10 mg of carbon carrier to mix, sonicate for 2 hours, stir and continue to react for 12 hours; heat and reflux the prepared nanoparticles with acetic acid for 12 hours, and wash them centrifugally with ethanol , vacuum dried and ground to obtain the target catalyst.
[0049] Anode preparation: Prepare catalyst ink with 5wt% nafion and carbon-supported platinum catalyst at a mass ratio of 0.4:1, use isopropanol and water as a mixed solvent, disperse ultrasonically for 1 hour, and apply the catal...
Embodiment 2
[0052] Preparation of carbon-supported palladium catalyst:
[0053] Disperse 20 mg of palladium acetylacetonate in a mixed solution of 2 mL of oleic acid and 8 mL of oleylamine, in an Ar atmosphere, stir vigorously and heat to 130 degrees Celsius; add 50 mg of tungsten hexacarbonyl, stir slowly, and the temperature rises to 240 degrees Celsius and keep for 40 minutes; after the reaction Wash by centrifugation, dry in vacuum and grind, then disperse the obtained powder with butylamine, add 10 mg of carbon carrier to mix, sonicate for 2 hours, stir and continue to react for 12 hours; heat and reflux the prepared nanoparticles with acetic acid for 12 hours, and wash them centrifugally with ethanol , vacuum dried and ground to obtain the target catalyst.
[0054] Anode preparation: prepare catalyst ink with 5wt% nafion and carbon-supported palladium catalyst at a mass ratio of 0.4:1, use isopropanol and water as a mixed solvent, and disperse by ultrasonication for 1h. The catalys...
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