Nitrogen-containing porous carbon aerogel and preparation method thereof
A technology of airgel and porous carbon, which is applied in the preparation/purification of carbon, the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc. It can solve the problems of complicated operation and cumbersome steps, achieve simple operation and improve rate performance , the effect of reducing mass transfer resistance
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Embodiment 1
[0050] Step 1: Organic Wet Gel Preparation
[0051] Put phloroglucinol and resorcinol according to the molar ratio n P / n R 1:7 mixing, then the mixture of resorcinol and phloroglucinol and formaldehyde are mixed according to the molar ratio of 1:2, then add lysine, the molar ratio of amino acid and phloroglucinol is 1:1, Deionized water was added to prepare a reaction solution with a mass fraction of 45%. Mix the reaction liquid evenly, seal it, keep it warm at 50°C for 3 days, and make a resorcinol-phloroglucinol-formaldehyde organic wet gel;
[0052] Step 2: Freeze drying
[0053] Put the organic wet gel directly into a freeze drying oven at -80°C to dry for one day to obtain an organic aerogel;
[0054] Step 3: High temperature carbonization
[0055] The dried organic aerogel was carbonized under vacuum conditions, and nitrogen gas was fed continuously at a rate of 20 mL / min during the carbonization process. The temperature was raised to 900°C at a min rate and kept fo...
Embodiment 2
[0058] Step 1: Organic Wet Gel Preparation
[0059] Put phloroglucinol and resorcinol according to the molar ratio n P / n R Mix at 1:7, then mix the mixture of resorcinol and phloroglucinol with formaldehyde at a molar ratio of 1:2, then add histidine, the molar ratio of amino acid to phloroglucinol is 1:1, Deionized water was added to prepare a reaction solution with a mass fraction of 45%. Mix the reaction liquid evenly, seal it, keep it warm at 50°C for 3 days, and make a resorcinol-phloroglucinol-formaldehyde organic wet gel;
[0060] Step 2: Freeze drying
[0061] Put the organic wet gel directly into a freeze drying oven at -80°C to dry for one day to obtain an organic aerogel;
[0062] Step 3: High temperature carbonization
[0063] The dried organic aerogel was carbonized under vacuum conditions, and nitrogen gas was fed continuously at a rate of 20 mL / min during the carbonization process. The temperature was raised to 900°C at a min rate and kept for 3 hours, an...
Embodiment 3
[0066] Step 1: Organic Wet Gel Preparation
[0067] Put phloroglucinol and resorcinol according to the molar ratio n P / n R Mix 1:7, then mix the mixture of resorcinol and phloroglucinol with formaldehyde in a molar ratio of 1:2, then add aspartic acid, the molar ratio of amino acid to phloroglucinol is 1:1 , adding deionized water to prepare a reaction solution with a mass fraction of 45%. Mix the reaction liquid evenly, seal it, keep it warm at 50°C for 3 days, and make a resorcinol-phloroglucinol-formaldehyde organic wet gel;
[0068] Step 2: Freeze drying
[0069] Put the organic wet gel directly into a freeze drying oven at -80°C to dry for one day to obtain an organic aerogel;
[0070] Step 3: High temperature carbonization
[0071] The dried organic aerogel was carbonized under vacuum conditions, and nitrogen gas was fed continuously at a rate of 20 mL / min during the carbonization process. The temperature was raised to 900°C at a min rate and kept for 3 hours, and...
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