Novel carbon cathode material of power lithium ion cell and preparation method thereof
A technology for lithium-ion batteries and carbon anode materials, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as poor rate performance, limit the development of lithium-ion batteries, and low lithium storage capacity, and achieve good rate performance and cycle performance , Conducive to migration and electron transfer, easy to operate
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Embodiment 1
[0029] (1) Mix 1.32g resorcinol and 2.06g formaldehyde in water, add 1.92g water, 0.00636g sodium carbonate, and stir for 30 minutes.
[0030] (2) Add 2 g of polystyrene pellets prepared by emulsion polymerization into the solution formed in step (1), stir for 30 minutes, and then filter to obtain a filter residue.
[0031] (3) The filter residue obtained in step (2) was subjected to vacuum reaction at 85° C. for 36 hours to obtain a layered array porous carbon precursor.
[0032] (4) The layered array porous carbon precursor prepared in step (3) was calcined in a tube furnace at 300°C and 500°C for 1 hour in an argon atmosphere, and calcined at 900°C for 2 hours, and cooled to At room temperature, a layered array porous carbon negative electrode material is obtained.
Embodiment 2
[0034] (1) Mix 1.32g resorcinol and 4.12g formaldehyde in water, add 2.502g water, 0.00636g sodium carbonate, and stir for 30 minutes.
[0035] (2) Add 4 g of polystyrene beads prepared by emulsion polymerization into the solution formed in step (1), stir for 30 minutes, and then filter to obtain a filter residue.
[0036] (3) The filter residue obtained in step (2) was subjected to vacuum reaction at 70° C. for 48 hours to obtain a layered array porous carbon precursor.
[0037] (4) The layered array porous carbon precursor prepared in step (3) was calcined in a tube furnace at 300°C, 500°C for 2 hours in an argon atmosphere, calcined at 900°C for 2 hours, and cooled to At room temperature, a layered array porous carbon negative electrode material is obtained.
Embodiment 3
[0039] (1) Mix 1.32g resorcinol and 2.505g formaldehyde in water, add 3.84g water, 0.013g sodium carbonate, and stir for 45 minutes.
[0040] (2) Add 2 g of polystyrene beads prepared by emulsion polymerization into the solution formed in step (1), stir for 45 minutes, and then filter to obtain a filter residue.
[0041] (3) The filter residue obtained in step (2) was subjected to vacuum reaction at 70° C. for 36 hours to obtain a layered array porous carbon precursor.
[0042] (4) The layered array porous carbon precursor prepared in step (3) was calcined in a tube furnace at 300°C, 500°C for 2 hours in an argon atmosphere, calcined at 900°C for 2 hours, and cooled to At room temperature, a layered array porous carbon negative electrode material is obtained.
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