A carbon nanotube lithium manganate nanocomposite material and its preparation method and application
A nanocomposite material, the technology of tube lithium manganate, which is applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of uneven local structure and performance of materials, and achieve excellent electrochemical performance. , good dispersion, shortening the effect of ion diffusion and transmission path
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Embodiment 1
[0089] Embodiment 1, prepare carbon nanotube lithium manganate nanocomposite material, concrete steps are as follows:
[0090] Step 1: Weigh 5g of conductive paste containing carbon nanotubes with a mass fraction of 10% in a 250ml beaker, add 150ml of ethanol for ultrasonic dilution and dispersion for 1h;
[0091] Step 2: Weigh 1g of lithium manganate and place it in the above beaker, and carry out ultrasonic dispersion for 1h;
[0092] Step 3: Leave the dispersion in the above beaker for 48 hours until the alcohol evaporates and the mixture becomes semi-dry (moisture content is about 32%);
[0093] Step 4: Place the above-mentioned beaker containing the mixture in a blast drying oven, and dry at 80° C. for 12 hours to obtain a solid mixture of carbon nanotubes and lithium manganate;
[0094] Step 5: the above solid mixture is placed in a 50ml agate ball mill jar;
[0095] Step 6: Take 3 milling beads with a diameter of 15mm, 1 milling bead with a diameter of 8mm, 2 milling ...
Embodiment 2
[0097] Embodiment 2, prepare carbon nanotube lithium manganate nanocomposite material, concrete steps are as follows:
[0098] Step 1: Weigh 10g of conductive paste containing carbon nanotubes with a mass fraction of 5% in a 250ml beaker, add 150ml of ethanol for ultrasonic dilution and dispersion for 1h;
[0099] Step 2: Weigh 2g of lithium manganate and place it in the above beaker, and carry out ultrasonic dispersion for 1.5h;
[0100] Step 3: Let the dispersion in the above beaker stand for 48 hours until the alcohol evaporates and the mixture becomes semi-dry;
[0101] Step 4: Place the above-mentioned beaker containing the mixture in a blast drying oven, and dry at 80° C. for 12 hours to obtain a solid mixture of carbon nanotubes and lithium manganate;
[0102] Step 5: the above solid mixture is placed in a 50ml agate ball mill jar;
[0103] Step 6: Take 4 milling beads with a diameter of 15mm, 3 milling beads with a diameter of 8mm, 3 milling beads with a diameter of ...
Embodiment 3
[0105] Embodiment 3, prepare carbon nanotube lithium manganate nanocomposite material, concrete steps are as follows:
[0106] Step 1: Weigh 5g of conductive paste containing carbon nanotubes with a mass fraction of 10% in a 250ml beaker, add 150ml of N-methylpyrrolidone (NMP) for ultrasonic dilution and dispersion for 1h;
[0107] Step 2: Weigh 2g of lithium manganate and place it in the above beaker, and carry out ultrasonic dispersion for 1.5h;
[0108] Step 3: Place the above-mentioned beaker containing the dispersion liquid in a blast drying oven, and dry at 100°C for 12 hours to obtain a solid mixture of carbon nanotubes and lithium manganate;
[0109] Step 4: placing the above solid mixture in an agate mortar;
[0110] Step 5: Grinding the above powder in a mortar for 6 hours, so that the materials are fully pulverized and mixed to obtain carbon nanotube lithium manganate nanocomposite powder.
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