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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

Inactive Publication Date: 2019-07-19
宁波正锂新能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most commercial electrode materials are mainly carbon materials with large specific surface area, but their energy density is low. How to improve the performance of electrodes is a research hotspot in the field of electrodes.

Method used

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  • Electrode material, preparation method of electrode material and supercapacitor
  • Electrode material, preparation method of electrode material and supercapacitor
  • Electrode material, preparation method of electrode material and supercapacitor

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preparation example Construction

[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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Abstract

The invention discloses an electrode material, a preparation method of the electrode material and a supercapacitor; a substrate comprises a metal organic framework and a carbon nanotube formed on themetal organic framework; and the substrate is subjected to selenization treatment, so that the substrate can obtain an effect of keeping the morphology of a precursor, and therefore the electrode material has excellent super-capacitance performance and high cycling stability, and excellent cycling retention rate can be kept continuously during cyclic utilization of the electrode.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to an electrode material, a preparation method thereof, and a supercapacitor. Background technique [0002] Energy is the material basis for human survival, and people consume mainly fossil energy. Due to the limited supply of fossil fuels and the rapid consumption of energy, it is not only easy to cause pollution to the environment, but also the contradiction of resource shortage is becoming more and more prominent, which seriously restricts the development of society. It is increasingly important to continuously increase the proportion of sustainable new energy development and utilization. [0003] New energy capacitor is a new type of green energy, which has the advantages of high voltage, long life and high energy density. New energy capacitors include electrodes. At present, most commercial electrode materials are mainly carbon materials with large specific sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/36H01G11/24
CPCH01G11/24H01G11/30H01G11/36Y02E60/13
Inventor 张桓瑜简政重荆瑞静吴小燕刘梅
Owner 宁波正锂新能源科技有限公司
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