Preparation method of platinum-ruthenium alloy catalyst for fuel cell anode
A platinum-ruthenium alloy and fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as uneven agglomeration and inhomogeneity, and achieve excellent performance, reduced oxidation overpotential, and good resistance to carbon monoxide poisoning. Effect
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Embodiment 1
[0025] Take 5.18g of chloroplatinic acid and 2.07g of ruthenium trichloride, and dissolve them in 200mL of deionized water. Fully homogenize into a slurry, pump the reaction liquid into the bubbling reactor, and blow in the mixed gas of hydrogen and carbon monoxide (H 2 / CO=1:0.5), no inert gas was used as diluent gas, and the bubbling flow rate was 3 L / min. During this process, the reaction solution was heated to 60° C., and the reaction time was 10 h. After the reaction was completed, the reaction liquid was discharged from the reaction kettle, filtered and washed, and the filter cake was dried in a vacuum oven at 60°C to obtain the catalyst product, which was recorded as #1-1.
Embodiment 2
[0029] Take 3.93g of platinum acetylacetonate and 1.75g of ammonium chlororuthenate, and dissolve them in 100mL of deionized water. After the substance is a slurry, the reaction solution is pumped into the bubbling reactor, and a mixture of hydrogen and carbon monoxide (H 2 / CO=1:0.5), using 40% volume of argon as the diluent gas, and the bubbling flow rate was 1.5 L / min. During this process, the reaction solution was heated to 75°C, and the reaction time was 5h. After the reaction was completed, the reaction solution was discharged from the kettle, filtered and washed, and the filter cake was placed in a vacuum drying oven at 70°C and dried overnight to obtain the catalyst product, which was designated as #2-1.
Embodiment 3
[0031] Potassium chloroplatinate (K 2 PtCl 6) 4.86g, potassium chlororuthenate 0.392g, dissolved in 25mL deionized water, fully dissolved and uniform, added 2.5g of XC-72R carbon carrier and 0.125g of PVP K-30 as a dispersant, using high-speed homogenizer After the machine is fully homogenized into a slurry, the reaction solution is pumped into the bubbling reaction kettle, and a mixed gas of hydrogen and carbon monoxide (H 2 / CO=1:0.1), nitrogen was used as the diluent gas, and the volume ratio of hydrogen to nitrogen was 1:0.2. The bubbling flow rate was 0.5 L / min. During this process, the reaction solution was heated to 90° C., and the reaction time was 2 h. After the reaction was completed, the reaction solution was discharged from the kettle, filtered and washed, and the filter cake was placed in a vacuum drying oven at 80°C and dried overnight to obtain the catalyst product, which was designated as #3-1.
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