Preparation method of artificial graphite anode material
A technology of artificial graphite negative electrode and graphitization treatment, applied in battery electrodes, electrical components, circuits, etc., can solve the problem that the conductive agent and artificial graphite materials cannot be in good contact, affect the coating processing performance of artificial graphite, reduce the conductive effect, etc. problems, to achieve the effect of reducing viscosity, improving processing performance, and reducing internal resistance
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Embodiment 1
[0018] In this example, the green coke raw materials are first pulverized and spheroidized, and the mass ratio is added to the stirred tank filled with xylene according to the ratio of spheroidized green coke: polyaniline (PANI): petroleum pitch = 85:5:10 Stir evenly, evaporate and remove the solvent, then purify at 1000°C for 10 hours in a non-oxygen atmosphere, and then graphitize at 3000°C for 120 hours. The prepared artificial graphite material was assembled into an effective battery according to the conventional battery preparation process, and the internal resistance of the battery was measured to be 38.5mΩ, and the cycle number was 1400 cycles.
Embodiment 2
[0020] In this example, the green coke raw materials are first crushed and spheroidized, and the mass ratio is added to the stirred tank filled with xylene according to the ratio of spheroidized green coke: polyaniline (PANI): petroleum pitch = 97.5:0.5:2 Stir evenly, evaporate and remove the solvent, then purify at 1000°C for 10 hours in a non-oxygen atmosphere, and then graphitize at 3000°C for 120 hours. The prepared artificial graphite material was assembled into an effective battery according to the conventional battery preparation process, and the internal resistance of the battery was measured to be 40.6mΩ, and the cycle number was 1300 cycles.
Embodiment 3
[0022] In this example, the green coke raw materials are first pulverized and spheroidized, and the mass ratio is added to the stirred tank filled with xylene according to the ratio of spheroidized green coke: polyaniline (PANI): petroleum pitch = 89:3:8 Stir evenly, evaporate and remove the solvent, then purify at 1000°C for 10 hours in a non-oxygen atmosphere, and then graphitize at 3000°C for 120 hours. The prepared artificial graphite material was assembled into an effective battery according to the conventional battery preparation process, and the internal resistance of the battery was measured to be 32.4mΩ, and the cycle number was 1600 cycles.
[0023] Embodiment three
[0024] Comparative Example The green coke raw materials were pulverized and spheroidized, followed by purification at 1000°C for 10 hours in a non-oxygen atmosphere, and then graphitization at a high temperature of 3000°C for 120 hours. The prepared artificial graphite material was assembled into an ef...
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