Preparation method and application of boron-composition-cladded silicon nano paste
A nano-slurry and silicon-coated technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of P-type battery attenuation, battery power generation capacity decline, etc., to achieve enhanced bonding The effect of uniform particle size distribution and high boron doping concentration
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Embodiment 1
[0033] Using a high-energy ball mill to grind the silicon raw material for 4 hours to obtain small silicon particles of 20 microns. right figure 1 The system shown was evacuated and then filled with argon. After several cycles, the system is argon atmosphere. Adjust the working gas pressure of the system between 0.1-0.5MPa; turn on the power supply of the plasma generator, the power is 100 kilowatts, the frequency is 10 MHz, and the voltage and current are adjusted in the range of 100-200V and 50-200A respectively, so that the plasma The body torch is stable; start the powder feeder, and use the argon flow to bring micron-sized silicon particles into the plasma torch chamber at a speed of 600 grams of silicon powder per hour. At the same time, the cooling gas is introduced from the inlet of the wind screen, and the circulating cooling water device is turned on. Control the cooling chamber temperature 60-90 o c. Micron-sized silicon powder forms nano-silicon particles thr...
Embodiment 2
[0035] Using a high-energy ball mill to grind the silicon raw material for 4 hours to obtain small silicon particles of 20 microns. right figure 1 The system shown was evacuated and then filled with argon. After several cycles, the system is argon atmosphere. Adjust the working gas pressure of the system between 0.1-0.5MPa; turn on the power supply of the plasma generator, the power is 100 kilowatts, the frequency is 10 MHz, and the voltage and current are adjusted in the range of 100-200V and 50-200A respectively, so that the plasma The body torch is stable; start the powder feeder, and use the argon flow to bring micron-sized silicon particles into the plasma torch chamber at a speed of 600 grams of silicon powder per hour. At the same time, the cooling gas is introduced from the inlet of the wind screen, and the circulating cooling water is turned on. Control the cooling chamber temperature 60-90 oc. Micron-sized silicon powder forms nano-silicon particles through gas...
Embodiment 3
[0037] Using a high-energy ball mill to grind the silicon raw material for 4 hours to obtain small silicon particles of 20 microns. right figure 1 The system shown was evacuated and then filled with argon. After several cycles, the system is argon atmosphere. Adjust the working gas pressure of the system between 0.1-0.5MPa; turn on the power supply of the plasma generator, the power is 100 kilowatts, the frequency is 10 MHz, and the voltage and current are adjusted in the range of 100-200V and 50-200A respectively, so that the plasma The body torch is stable; start the powder feeder, and use the argon flow to bring micron-sized silicon particles into the plasma torch chamber at a speed of 400 grams of silicon powder per hour. At the same time, the cooling gas is introduced from the inlet of the wind screen, and the circulating cooling water is turned on. Control the cooling chamber temperature 60-90 o c. Micron-sized silicon powder forms nano-silicon particles through ga...
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