Sulfur-asphalt based/graphene composite material and preparation method and application thereof
A composite material and graphene technology, applied in the field of electrochemical energy storage, can solve problems such as restricting development, low product added value, and short battery cycle life
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Embodiment 1
[0063] The specific experimental process is as follows: (1) Industrial solid asphalt was vacuum-dried at 120°C for 3 hours, and then 50.0 g of agate balls with a diameter of 1-1.3 cm were put into an agate ball mill jar containing 50 g of treated asphalt, and then The ball mill jar was placed on a planetary ball mill and ball milled at a speed of 650 rpm for 5 hours. Take out the agate ball with tweezers, and dry the solid sample at 70 °C for 48 hours; (2) Mix and impregnate the above-mentioned asphalt powder with KOH for 60 hours at 40 °C, and then The mixed sample was blown and dried for 48 hours at a temperature of 110 degrees Celsius; (3) The obtained solid material was activated in an argon atmosphere at 700 degrees Celsius for 8 hours, and then washed with 10% hydrochloric acid aqueous solution and deionized water to neutrality, Use a polypropylene bag (pore size 20 microns) to separate the solid from the liquid, and dry the resulting solid at 120 degrees Celsius for 6 h...
Embodiment 2
[0066] The specific experimental process is as follows: (1) The industrial solid asphalt was vacuum-dried at 120 degrees Celsius for 3 hours, and then 200g of zirconia balls with a diameter of 3-8mm and 40g of asphalt were sealed in a zirconia ball mill jar under the protection of argon. Then the ball mill jar was placed on a planetary ball mill and ball milled at a speed of 600 rpm for 4 hours. Take out the zirconia ball with tweezers, sieve the milled sample with an ultrasonic vibrating sieve, take a 20-mesh sample and dry it at 100 °C for 24 hours; (2) Mix 20 g of treated pitch with 5 g of graphene and solid 40 g Na 2 CO 3Stir after ultrasonic mixing. The ultrasonic frequency is 20 kHz, the power density is 800w, the time is 8 hours, the temperature is 40 degrees Celsius, and the stirring time is 24 hours. Polystyrene membrane (pore size 2 microns) is used to achieve solid-liquid separation, the solid remains in the bag, and the liquid is thrown out, pressed out, extrude...
Embodiment 3
[0070] The specific experimental process is as follows: (1) Take 100 g of liquid industrial pitch and dissolve it in N-N dimethylformamide, add the surfactant cetyltrimethylammonium chloride during the stirring process, and ultrasonicate for 5 hours at a frequency of 2000 Hz , with a power density of 800 watts, then mechanically stirred for 24 hours, and used a polystyrene membrane (pore size of 5 microns) for solid-liquid separation, and the obtained solid was dried at 120 degrees Celsius for 4 hours; (2) 50 g of the above-mentioned asphalt was mixed with 10 g of nitrogen-doped graphene was mixed, and dissolved in 300 milliliters of 80% by mass ZnCl in aqueous solution for high-speed shear mixing. The time is 2 hours, the temperature is 60 degrees Celsius, and the rotation speed is 2000 rpm. Polypropylene bag (pore size 5 microns) is used for solid-liquid separation. The solid remains in the bag and the liquid is thrown out; (3) The above solid is separated at 800 Activate wi...
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