Method for preparing lithium battery negative electrode material, and lithium battery negative electrode sheet
A negative electrode material, lithium battery technology, applied in the direction of battery electrodes, electrode collector coatings, negative electrodes, etc., can solve the problems of large irreversible capacity loss, high initial charge and discharge efficiency, low specific capacity, etc., and achieve cycle stability Improvement, specific capacity improvement, and the effect of high specific capacity
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Embodiment 1
[0031] (1) Preparation of artificial graphite anode materials for lithium batteries:
[0032] (1) The petroleum coke is mechanically crushed, and then the powder is mechanically ball-milled to obtain fine powder, and the fine powder is classified;
[0033] (2) Mix the classified fine powder with an appropriate amount (5%) of asphalt powder, and then put the evenly mixed powder into a medium-temperature reactor for reaction (the temperature in the reactor is 500℃, and the stirring speed in the reactor is 40r / min, the reaction time is 8h), and finally the material is discharged.
[0034] (3) Pass the discharged powder through the shaping classifier again for shaping and classifying treatment;
[0035] (4) The product obtained above is subjected to high temperature graphitization treatment (at 2500°C for 36 hours), and then subjected to classification treatment to obtain artificial graphite material A (D 50 =10um).
[0036] (5) Add the A prepared in step 1 to a beaker containing ...
Embodiment 2
[0044] (1) Preparation of anode materials for lithium batteries:
[0045] (1) The petroleum coke is mechanically crushed, and then the powder is mechanically ball-milled to obtain fine powder, and the fine powder is classified;
[0046] (2) Mix the classified fine powder with an appropriate amount (5%) of asphalt powder, and then put the evenly mixed powder into the medium temperature reactor for reaction (the temperature in the reactor is 500°C, and the stirring speed in the kettle is 40r / min, the reaction time is 8h), and finally the material is discharged.
[0047] (3) Pass the discharged powder through the shaping classifier again for shaping and classifying treatment;
[0048] (4) The product obtained above is subjected to high temperature graphitization treatment (at 2500°C for 36 hours), and then subjected to classification treatment to obtain artificial graphite material A (D 50 =10um).
[0049] (5) Add the A prepared in step 1 to a beaker containing a certain amount o...
Embodiment 3
[0056] (1) Preparation of anode materials for lithium batteries:
[0057] (1) The petroleum coke is mechanically crushed, and then the powder is mechanically ball-milled to obtain fine powder, and the fine powder is classified;
[0058] (2) Mix the classified fine powder with an appropriate amount (5%) of asphalt powder, and then put the evenly mixed powder into the medium temperature reactor for reaction (the temperature in the reactor is 500°C, and the stirring speed in the kettle is 40r / min, the reaction time is 8h), and finally the material is discharged.
[0059] (3) Pass the discharged powder through the shaping classifier again for shaping and classifying treatment;
[0060] (4) The product obtained above is subjected to high temperature graphitization treatment (at 2500°C for 36 hours), and then subjected to classification treatment to obtain artificial graphite material A (D 50 =10um).
[0061] (5) Add the A prepared in step 1 to a beaker containing a certain amount o...
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Abstract
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