High-performance carbon negative electrode PTCDA hard carbon material and preparation method thereof
A carbon negative electrode, high-performance technology, applied in the direction of carbon preparation/purification, negative electrode, active material electrode, etc., can solve the problems of limited application, increase of lithium ion diffusion resistance, poor rate performance of layered graphite negative electrode, etc., to achieve preparation The method is simple, easy for industrial production, and the effect of low sintering temperature
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Embodiment 1
[0024] Step 1: Dissolve about 20g of perylenetetracarboxylic dianhydride in a porcelain boat with enough NMP (add in several times), cover the porcelain boat and put it in an oven at 100°C for 24h-48h.
[0025] In step 2, heat at a room temperature of 30° C. at a rate of 3° C. / min to 530° C. over 167 minutes, and keep the temperature for 2 hours.
[0026] Step 3, carbonization: reach 1000°C at a rate of 2°C / min, keep the temperature for 2 hours, and cool down to room temperature as the negative electrode material of perylenetetracarboxylic dianhydride.
[0027] In step 4, the obtained perylene tetracarboxylic dianhydride negative electrode material is ground and passed through a 300-mesh sieve to obtain an extremely fine perylene tetracarboxylic dianhydride negative electrode material.
Embodiment 2
[0029] Step 1: Dissolve about 20g of perylenetetracarboxylic dianhydride in a porcelain boat with enough NMP (add in several times), cover the porcelain boat and put it in an oven at 100°C for 24h-48h.
[0030] In step 2, heat at a room temperature of 30° C. at a rate of 3° C. / min to 530° C. over 167 minutes, and keep the temperature for 2 hours.
[0031] Step 3, carbonization: reach 1050°C at a rate of 2°C / min, keep the temperature for 2 hours, and cool down to room temperature as the negative electrode material of perylenetetracarboxylic dianhydride.
[0032] In step 4, the obtained perylene tetracarboxylic dianhydride negative electrode material is ground and passed through a 300-mesh sieve to obtain an extremely fine perylene tetracarboxylic dianhydride negative electrode material.
Embodiment 3
[0034] Step 1: Dissolve about 20g of perylenetetracarboxylic dianhydride in a porcelain boat with enough NMP (add in several times), cover the porcelain boat and put it in an oven at 100°C for 24h-48h.
[0035] In step 2, heat at a room temperature of 30° C. at a rate of 3° C. / min to 530° C. over 167 minutes, and keep the temperature for 2 hours.
[0036] Step 3, carbonization: reach 1100°C at a rate of 2°C / min, keep the temperature for 2 hours, and cool down to room temperature as the negative electrode material of perylenetetracarboxylic dianhydride.
[0037] In step 4, the obtained perylene tetracarboxylic dianhydride negative electrode material is ground and passed through a 300-mesh sieve to obtain an extremely fine perylene tetracarboxylic dianhydride negative electrode material.
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