Preparation method of high-capacity and high-compaction-density graphite composite material
A composite material and high-pressure compaction technology, which is applied to structural parts, electrical components, battery electrodes, etc., can solve problems such as low specific capacity and compacted density, short service life, and deviation in cycle performance, so as to improve electronic conductivity, The effect of increasing the compacted density and increasing the gram capacity
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Embodiment 1
[0029] 1) Preparation of mixture A:
[0030] Mix 100g needle coke, 3g graphene, 3g lithium borate and 20g petroleum pitch to obtain mixture A;
[0031] 2) Preparation of mixed material B:
[0032] Transfer the mixture A to a tube furnace, heat up to 400°C for thermal polymerization under an argon inert atmosphere, and at the same time pass chlorine trifluoride (flow rate: 5mL / min) and keep the pressure at 5Mpa for 6h, then Naturally cool down to room temperature, and pulverize to obtain mixed material B;
[0033] 3) Preparation of mixed material C:
[0034] Mix 100g of mixed material B, 20g of phenolic resin and 3g of nano-nickel (particle size 100nm) catalyst evenly, and under the protection of argon inert atmosphere, carry out low-temperature composite granulation at 600°C for 6 hours, and then grind and classify to obtain the mixed material C;
[0035] 4) Preparation of composite graphite D:
[0036] Afterwards, the mixed material C was heated up to 3000° C. for high-t...
Embodiment 2
[0038] 1) Preparation of mixture A:
[0039] 100g of petroleum coke, 1g of carbon nanotubes, 1g of lithium borate and 10g of coal tar pitch were uniformly mixed to obtain mixture A;
[0040] 2) Preparation of mixed material B:
[0041] Transfer the mixture A to a tube furnace, raise the temperature to 300°C for thermal polymerization under an argon inert atmosphere, and simultaneously feed sulfur tetrafluoride (the flow rate is 1mL / min) and keep the pressure at 0.1Mpa for 12h. Then cool down naturally to room temperature, and pulverize to obtain the mixed material B;
[0042] 3) Preparation of mixed material C:
[0043] After mixing 100g of mixed material B, 10g of epoxy resin and 1g of nano-molybdenum (particle size 50nm) catalyst evenly, and under the protection of argon inert atmosphere, carry out low-temperature composite granulation at 500°C for 4 hours, and then grind and classify to obtain the mixture Material C;
[0044] 4) Preparation of composite graphite D:
[...
Embodiment 3
[0047] 1) Preparation of mixture A:
[0048] Mix 100g of mesocarbon microspheres, 5g of carbon black, 5g of lithium borate and 30g of petroleum pitch to obtain mixture A;
[0049] 2) Preparation of mixed material B:
[0050] Transfer the mixture A to a tube furnace, raise the temperature to 500°C for thermal polymerization under an argon inert atmosphere, and at the same time pass through xenon difluoride (flow rate: 10mL / min), and keep the pressure at 10Mpa for 1h, then Naturally cool down to room temperature, and pulverize to obtain mixed material B;
[0051] 3) Preparation of mixed material C:
[0052] Mix 100g of mixed material B, 30g of acrylic resin and 5g of nano-nickel (particle size 200nm) catalyst evenly, and under the protection of argon inert atmosphere, carry out low-temperature composite granulation at 800°C for 10h, and then grind and classify to obtain the mixed material C;
[0053] 4) Preparation of composite graphite D:
[0054] Afterwards, the mixed mat...
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