Electrode material, preparation method of electrode material and supercapacitor
A technology of electrode materials and substrates, which is applied in the field of electronic components, can solve problems such as low energy density, and achieve the effect of maintaining cycle retention and excellent cycle retention
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[0031] Another aspect of the embodiments of the present invention provides a method for preparing an electrode material, including: first, forming a mixed solution of a carbon nanotube dispersion and a metal-organic dispersion; then, drying the mixed solution to form a matrix; The substrate is selenized to obtain electrode materials.
[0032] The embodiment of the present invention also provides a preparation method for manufacturing the electrode material of the above-mentioned embodiment of the present invention. By dispersing the carbon nanotube dispersion and the metal-organic dispersion, the two are fully mixed and contacted to form a mixed solution, and then the mixed solution is After drying, the matrix grains are formed, and after the selenization treatment is performed on the matrix, the selenium material is wrapped on the outer surface of the matrix grains to protect the matrix grains, so that the matrix can obtain the effect of maintaining the shape of the precursor....
Embodiment 1
[0051] A preparation method of an electrode material, comprising:
[0052] First, weigh 25 mg of carbon nanotube powder and 150 mg of polyvinylpyrrolidone, and add carbon nanotubes and polyvinylpyrrolidone into 21.4 mL of methanol solution measured in advance for pre-dispersion to obtain a good dispersion effect of CNTs. Label this as Solution 1 and store for later use.
[0053] Then, weigh 0.361g of cobalt nitrate hexahydrate and 0.819g of 2-methylimidazole respectively and dissolve them in 12ml of methanol solution measured in advance. When the two reagents are completely dissolved in methanol, pour the 2-methylimidazole solution into the cobalt nitrate hexahydrate solution, the solution will turn purple and it can be used. Label this as Solution 2 and store for later use.
[0054] Afterwards, solution 1 was poured into solution 2, stirred at room temperature for 2 hours, and then centrifuged. During centrifugation, the precipitate was washed with methanol three times to r...
Embodiment 2
[0059] A preparation method of an electrode material, comprising:
[0060] First, 50 mg of carbon nanotubes and 300 mg of polyvinylpyrrolidone were weighed, and the carbon nanotubes and polyvinylpyrrolidone were simultaneously added to 42.85 mL of methanol solution measured in advance for pre-dispersion to obtain a good carbon nanotube dispersion effect. Label this as Solution 1 and store for later use.
[0061] Then, 0.722g of cobalt nitrate hexahydrate and 1.629g of 2-methylimidazole were weighed and dissolved in 25ml of methanol solution measured in advance. When the two reagents are completely dissolved in methanol, use a jar to pour the 2-methylimidazole solution into the cobalt nitrate hexahydrate solution, and the solution turns purple. Label this as Solution 2 and store for later use.
[0062] After that, solution 1 was poured into solution 2, stirred at room temperature for 2 hours, and then centrifuged. After centrifugation, the precipitate was washed with methanol...
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