An integrated oxygen reduction hydrogen peroxide cathode and its preparation method
A hydrogen peroxide, integrated technology, applied in the direction of electrodes, electrolysis components, electrolysis process, etc., can solve the problems of reducing catalytic sites, cumbersome preparation steps, and reducing the mass transfer capacity of materials, so as to facilitate large-scale production and the preparation method is simple and easy line effect
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Embodiment 1
[0023] Ultrasonic dispersion of 0.2 g of acetylene black in 20 mL of N-N dimethylformamide solution, followed by the addition of 2 g of polyvinylidene fluoride, placed the mixed system in an oil bath at 70°C for 5 hours with continuous mechanical stirring, to obtain a blended polymer solution. Repeat the immersion-pulling operation of the conductive graphite paper in the above-mentioned blend solution for 5 times, so that the blend solution is evenly coated on the surface of the graphite paper. Subsequently, the graphite paper was quickly soaked in water so that the surface blended liquid phase-separated into a solid and tightly adhered to the graphite paper. After soaking for 30 minutes, the graphite paper was dried in a high-temperature oven at 100°C. Place the dried graphite paper in a high-temperature furnace, and under the protection of an inert atmosphere, heat up to 900°C, treat at a constant temperature for 180 minutes, and then cool down to room temperature to finally ...
Embodiment 2
[0029] Ultrasonic dispersion of 0.2 g of acetylene black in 20 mL of N-N dimethylformamide solution, followed by the addition of 2 g of polyvinylidene fluoride, and the mixed system was placed in an oil bath at 60°C for 4 hours under continuous mechanical stirring, to obtain a blended polymer solution. Repeat the immersion-pulling operation of the conductive graphite paper in the above-mentioned blend solution for 5 times, so that the blend solution is evenly coated on the surface of the graphite paper. Subsequently, the graphite paper was quickly soaked in water so that the surface blended liquid phase-separated into a solid and tightly adhered to the graphite paper. After soaking for 30 minutes, the graphite paper was dried in a high-temperature oven at 100°C. Place the dried graphite paper in a high-temperature furnace, and under the protection of an inert atmosphere, heat up to 800°C, treat at a constant temperature for 120 minutes, and then cool down to room temperature to...
Embodiment 3
[0032]0.2g of acetylene black was ultrasonically dispersed in 20mL of N-N dimethylformamide solution, and then 2g of polyvinylidene fluoride was added. The mixed system was placed in an oil bath at 80°C and mechanically stirred for 6 hours to obtain a blended polymer solution. Repeat the immersion-pulling operation of the conductive graphite paper in the above-mentioned blend solution for 5 times, so that the blend solution is evenly coated on the surface of the graphite paper. Subsequently, the graphite paper was quickly soaked in water so that the surface blended liquid phase-separated into a solid and tightly adhered to the graphite paper. After soaking for 30 minutes, the graphite paper was dried in a high-temperature oven at 100°C. The dried graphite paper was placed in a high-temperature furnace, and under the protection of an inert atmosphere, the temperature was raised to 1000°C, treated at a constant temperature for 240 minutes, and then cooled to room temperature to f...
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