High-magnification supercapacitor composite electrode material and preparation method thereof
A technology of supercapacitors and composite electrodes, applied in capacitors, electrolytic capacitors, circuits, etc., can solve the problems of long time consumption, environmental pollution of carbon sources, etc., and achieve the effects of abundant sources, improved electrical conductivity, and environmentally friendly production process.
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[0049] Example 1
[0050] The particle size of the graphite powder is not limited, and 325 mesh graphite powder is preferably selected. The specific process of the oxidation treatment of the graphite powder is: uniformly dispersing the graphite powder and sodium nitrate powder into a sulfuric acid solution. Specifically, 5g of graphite with 325 mesh and 2.5g of sodium nitrate powder can be added to 130ml of concentrated sulfuric acid to form a mixture, and the mixture can be further stirred to obtain a uniform dispersion of the graphite and sodium nitrate powder. The stirring time varies. For 2h. Note that this process has been completed in an ice bath or ice water bath to prevent the temperature of the mixture from becoming too high; slowly add potassium permanganate powder to the sulfuric acid solution uniformly dispersed with graphite powder and sodium nitrate powder to form a suspension, The adding speed is controlled by controlling the adding time, specifically adding 15g ...
Example Embodiment
[0057] Example 2
[0058] The particle size of the graphite powder is not limited, and 325 mesh graphite powder is preferably selected. The specific process of the oxidation treatment of the graphite powder is: uniformly dispersing the graphite powder and sodium nitrate powder into a sulfuric acid solution. Specifically, 5g of graphite with 325 mesh and 2.5g of sodium nitrate powder can be added to 130ml of concentrated sulfuric acid to form a mixture, and the mixture can be further stirred to obtain a uniform dispersion of the graphite and sodium nitrate powder. The stirring time varies. For 2h. Note that this process has been completed in an ice bath or an ice water bath to prevent the temperature of the mixture from being too high; slowly add potassium permanganate powder to the sulfuric acid solution dispersed with graphite powder and sodium nitrate powder to form a suspension , The adding speed is controlled by controlling the adding time, specifically adding 15g of potass...
Example Embodiment
[0064] Example 3
[0065] The particle size of the graphite powder is not limited, and 325 mesh graphite powder is preferably selected. The specific process of the oxidation treatment of the graphite powder is: uniformly dispersing the graphite powder and sodium nitrate powder into a sulfuric acid solution. Specifically, 5g of graphite with 325 mesh and 2.5g of sodium nitrate powder can be added to 130ml of concentrated sulfuric acid to form a mixture, and the mixture can be further stirred to obtain a uniform dispersion of the graphite and sodium nitrate powder. The stirring time varies. For 2h. Note that this process has been completed in an ice bath or an ice water bath to prevent the temperature of the mixture from being too high; slowly add potassium permanganate powder to the sulfuric acid solution dispersed with graphite powder and sodium nitrate powder to form a suspension , The adding speed is controlled by controlling the adding time, specifically adding 15g of potass...
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