A kind of high-purity and high-conductivity graphene-like hierarchical porous carbon and preparation method thereof
A high-conductivity, graphene technology, applied in the field of new materials, can solve the problems of discontinuous reaction process, high equipment requirements, waste of energy consumption, etc., and achieve the effect of avoiding heat loss, high conductivity, and improving porosity
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Embodiment 1
[0021] Mix petroleum coke, potassium hydroxide, and ferric nitrate at a molar ratio of 1:3:0.05, put them into a nickel crucible, then place them in a high-temperature atmosphere furnace, feed 200ccm of nitrogen, and raise the temperature to 850°C at 2°C / min Keep warm for 1h, then add 30ccm of chlorine gas, raise the temperature to 1350°C at 5°C / min, and keep it warm for 4h, stop feeding chlorine gas (continue to feed nitrogen gas), and naturally cool down to room temperature, and immerse the obtained product in 0.05M HCl solution After 1h, take it out and wash it with deionized water to neutrality, and bake it in an oven at 80°C for 8h to obtain an ash content of 0.06%, an electrical conductivity of 10S / cm, and a specific surface area of 1370m 2 / g graphene-like hierarchical porous carbon.
Embodiment 2
[0023] Mix pitch coke, sodium oxide, and nickel chloride at a molar ratio of 1:3:0.02, put them into a nickel crucible, and then place them in a high-temperature atmosphere furnace, inject 600ccm of nitrogen gas, and raise the temperature to 750°C at 2°C / min Keep warm for 2h, then add 60ccm of chlorine gas, raise the temperature to 1550°C at 5°C / min, keep warm for 2h, stop feeding chlorine gas (continue to feed nitrogen gas), and let it cool down to room temperature naturally, then immerse the obtained product in 0.1M HCl solution After 0.5h, take it out and wash it with deionized water to neutrality, put it in a vacuum oven at 100°C for 4h, and get an ash content of 0.09%, a Franklin P value of 0.404, and a specific surface area of 1150m 2 / g graphene-like hierarchical porous carbon.
Embodiment 3
[0025] Mix coal char and nickel chloride at a molar ratio of 1:0.02, put them into a nickel crucible, and then place them in a high-temperature atmosphere furnace, and feed 600ccm of nitrogen and 45ccm of CO 2 , and heated at 10°C / min to 700°C for 5h, then stopped feeding CO 2 , add 20ccm of chlorine gas, raise the temperature to 1650°C at 10°C / min, and keep it warm for 2h, stop feeding chlorine gas (continue to feed nitrogen gas), and naturally cool down to room temperature, and immerse the obtained product in 0.5M HNO 3 in the solution for 0.5h, then take it out and wash it with deionized water until it is neutral, put it in a vacuum oven at 100°C for 2h, and obtain an ash content of 0.045%, a Franklin P value of 0.37, and a specific surface area of 850m 2 / g graphene-like hierarchical porous carbon.
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