A kind of porous carbon nanofiber flexible battery material containing nano-silicon and its preparation method
A technology of nanofibers and flexible batteries, applied in fiber processing, battery electrodes, secondary batteries, etc., to achieve the effects of favorable electrochemical performance, high yield, and reduced transmission distance
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Embodiment 1
[0037]First, 0.25g of silane coupling agent HK560 and 0.5g of fumed silica (with a particle size of 50-500nm) were refluxed in 100mL of ethanol at 90°C for 4 hours for surface modification treatment; then 1.15g of polyacrylonitrile, 0.05 Add g polymethyl methacrylate to 10mL organic solvent N,N dimethylformamide, heat and stir at 60°C for 60min until dissolved; then add surface-modified fumed silica particles, and disperse evenly by ultrasonic to obtain spinning silk slurry; after the above-mentioned spinning solution is removed from the small vacuoles, pass through a high-voltage electrospinning machine at 20KV, the needle point and the receiving device (the receiving device is a zigzag receiving device, and its structural diagram is as follows: figure 1 As shown, it is composed of a zigzag receiving plate 02 made of aluminum or copper supported by a polymethyl methacrylate (PMMA) substrate 01 , and the inclination angle θ of the zigzag receiving plate 02 to the horizontal dir...
Embodiment 2
[0040] First, 0.5g of silane coupling agent HK560 and 0.5g of water glass hydrolyzed silica (with a particle size of 50-500nm) were refluxed in 100mL of ethanol at 90°C for 4 hours for surface modification; then 1.15g of polyacrylonitrile , Add 0.1g polymethyl methacrylate to 10mL organic solvent N,N dimethylformamide, heat and stir at 60°C for 60min until dissolved; then add surface-modified water glass hydrolyzed silica particles, and ultrasonically Disperse to obtain the spinning slurry; after the above-mentioned spinning solution is removed from the small bubbles, pass through the high-voltage electrospinning machine at 20KV, the needle point and the receiving device (the receiving device is a zigzag receiving device, and its structural diagram is as follows: figure 1 and figure 2 As shown), the distance of 25cm, the blunt needle pushing speed of 0.035ml / min, the humidity of the spinning process is 35% to 40%, and the temperature of the spinning process is 20 to 25°C to o...
Embodiment 3
[0043] First, 1g of silane coupling agent HK560 and 0.5g of tetraethyl orthosilicate hydrolyzed silica (particle size 50-500nm) were refluxed in 100mL of ethanol at 90°C for 4 hours for surface modification treatment; then 1.15g of poly Add acrylonitrile and 0.12g polylactic acid to 10mL organic solvent N,N dimethylformamide, heat and stir at 60°C for 60min until dissolved; then add surface-modified ethyl orthosilicate hydrolyzed silica particles, ultrasonic Uniformly disperse to obtain spinning slurry; after the above-mentioned spinning solution is removed from small bubbles, pass through a high-voltage electrospinning machine at 20KV, the needle point and the receiving device (the receiving device is a zigzag receiving device, and its structural diagram is as follows: figure 1 and figure 2 As shown), the distance of 25cm, the blunt needle pushing speed of 0.035ml / min, the humidity of the spinning process is 35% to 40%, and the temperature of the spinning process is 20 to 25...
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