Modified carbon nanotube-modified nickel cobalt manganese ternary composite electrode material and preparation method therefor
A carbon nanotube and ternary composite technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor rate stability, poor high-voltage cycle stability, low electronic conductivity, etc., to achieve low cost and improve transfer rate. , the effect of simple synthesis process
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[0038] Example 1
[0039] Weigh 1 g of carbon nanotubes and 0.075 g of melamine, put them in a ball milling tank, and mill them for 4 hours. Then place the above mixture in a box furnace protected by a nitrogen atmosphere and roast at 500°C for 6 hours to obtain nitrogen-modified carbon nanotubes. . Then weigh 9.22g of the nickel-cobalt-manganese precursor and 3.8g of lithium carbonate in a ball milling tank, add 50ml of absolute ethanol, and then add 0.651g of nitrogen-modified carbon nanotubes to the above suspension. The above solution is fully dispersed and ball milled for 4 hours to obtain a uniformly dispersed solution, and the above solution is placed in an oven at 70° C. and dried for 12 hours to obtain a dry nitrogen-modified carbon nanotube modified nickel-cobalt-manganese composite electrode material precursor. The precursor was placed in a box furnace and calcined at 800°C for 12 hours in a nitrogen atmosphere with a heating rate of 5°C / min to prepare modified nickel...
Example Embodiment
[0040] Example 2
[0041] Weigh 1 g of carbon nanotubes and 0.06 g of melamine, put them in a ball milling tank, and mill them for 4 hours, then place the above mixture in a box furnace protected by a nitrogen atmosphere and roast at 400°C for 4 hours to obtain nitrogen-modified carbon nanotubes . Then weigh 9.22 g of nickel, cobalt and manganese precursor and 3.88 g of lithium carbonate in a ball mill tank, add 50 ml of absolute ethanol, and then add 0.131 g of nitrogen-modified carbon nanotubes to the above suspension. The above solution was fully dispersed and ball milled for 5 hours to obtain a uniformly dispersed solution, and the above solution was placed in an oven at 60° C. and dried for 14 hours to obtain a dry nitrogen-modified carbon nanotube modified nickel-cobalt-manganese composite electrode material precursor. The precursor was placed in a box furnace and calcined at 700°C for 24 hours in a nitrogen atmosphere at a heating rate of 4°C / min to prepare a modified nic...
Example Embodiment
[0042] Example 3
[0043] Weigh 1 g of carbon nanotubes and 0.2862 g of boric acid, put them in a ball milling tank, and ball mill for 4 hours, then place the above mixture in a box furnace protected by a nitrogen atmosphere and roast at 500°C for 6 hours to obtain boron-modified carbon nanotubes . Then weigh 9.22g nickel cobalt manganese precursor and 3.8g lithium carbonate in a ball mill tank, add 50 ml of absolute ethanol, and then add 0.651g of boron-modified carbon nanotubes to the above suspension. The above solution is fully dispersed and ball milled for 4 hours to obtain a uniformly dispersed solution, and the above solution is placed in an oven at 70° C. and dried to obtain a dried boron-modified carbon nanotube modified nickel-cobalt-manganese composite electrode material precursor. The precursor was placed in a box furnace and calcined at 800°C for 12 hours in a nitrogen atmosphere at a heating rate of 5°C / min to prepare modified nickel, cobalt and manganese with a bo...
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