Preparation method of carbon material for supercapacitor, carbon material and application of carbon material
A technology for supercapacitors and carbon materials, applied in chemical instruments and methods, hybrid capacitor electrodes, inorganic chemistry, etc., can solve problems such as hindering the performance of supercapacitors, insufficient specific surface area, internal resistance increase and attenuation, etc., to improve reaction participation Probability and degree of reaction, promotion of pore formation, effect of reducing ash content
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[0039] One embodiment of the present invention provides a method for preparing carbon materials for supercapacitors, comprising the following steps:
[0040] Step 102, pretreating a certain amount of raw coal and gasification slag-enriched charcoal and uniformly mixing with a certain amount of co-activator, and performing high-temperature activation treatment;
[0041] Step 104, mixing the first product obtained after the high-temperature activation treatment with a certain amount of acid-alcohol mixture, heating and stirring, suction filtering, washing, drying after the reaction, and setting aside;
[0042] Step 106, reacting the second product obtained in step 104 with a certain amount of mixed gas of nitrogen and hydrogen at high temperature.
[0043] As a preferred embodiment, in step 102, the pretreatment includes: mixing a certain amount of raw coal and gasification slag-enriched carbon with a certain amount of strong acid solution, heating and stirring, suction filtrati...
Embodiment 1
[0061] The present embodiment provides a kind of preparation method of supercapacitor carbon material, comprises the following steps:
[0062] (1) Mix 800g of anthracite, 200g of palm shell gasification slag, and 600g of perchloric acid, heat to 90°C and stir for 4 hours at a constant temperature. After the reaction is completed, introduce the reaction solution into a funnel for suction filtration, and repeatedly wash with deionized water until the filtrate becomes neutral. , dried in a vacuum oven at 150°C for 10 hours to obtain a pre-oxidized precursor;
[0063] (2) The pre-oxidized precursor obtained in step (1) was carbonized in a high-temperature tube furnace from room temperature to 550°C for 5 hours, and the temperature was naturally cooled to room temperature to obtain a carbonized precursor;
[0064] (3) 400g of the carbonized precursor obtained in step (2) and 800g of sodium hydroxide were uniformly mixed at a stirring speed of 500r / min, and then ground into a 200-me...
Embodiment 2
[0074] The present embodiment provides a kind of preparation method of supercapacitor carbon material, comprises the following steps:
[0075] (1) Mix 1000g of coking coal, 400g of bituminous coal gasification slag, and 800g of concentrated sulfuric acid and heat it to 75°C for 6h at a constant temperature. Dry in a drying oven at 110°C for 12 hours to obtain a pre-oxidized precursor;
[0076] (2) The pre-oxidized precursor obtained in step (1) was carbonized in a high-temperature tube furnace from room temperature to 750°C for 3.5 hours, and then naturally cooled to room temperature to obtain a carbonized precursor;
[0077] (3) 500g of the carbonized precursor obtained in step (2) and 1500g of potassium carbonate were uniformly mixed at a stirring speed of 500r / min, and then ground into a 250-mesh fine powder in a ball mill;
[0078] (4) The fine powder obtained in step (3) was placed on a flat die roller compactor for 4 hours under a pressure of 17 MPa, and then extruded i...
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