Three-dimensional material, preparation method thereof and electrode for supercapacitor

A three-dimensional, three-dimensional porous technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of easy agglomeration, affecting the increase of specific capacitance value, affecting the contact area of ​​electrolyte, etc.

Active Publication Date: 2018-04-24
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The electrode materials commonly used in the prior art usually have the following characteristics: the active material itself or the supported matrix has a large specific surface

Method used

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  • Three-dimensional material, preparation method thereof and electrode for supercapacitor
  • Three-dimensional material, preparation method thereof and electrode for supercapacitor
  • Three-dimensional material, preparation method thereof and electrode for supercapacitor

Examples

Experimental program
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Example Embodiment

[0080] Example 1

[0081] Put 5g of molybdenum disulfide powder in 50ml of nitromethylpyrrolidone (NMP) and ball mill for 3h to obtain a mixed solution of 100mg / ml. Treat the mixed solution at 20°C under ultrasonic frequency of 50Hz for 6h to obtain 100mg / ml containing disulfide NMP dispersion of molybdenum.

[0082] Centrifuge the above NMP dispersion of molybdenum disulfide at 2000 rpm for 30 minutes, take out 4 / 5 of the supernatant, centrifuge the taken out supernatant at 11000 rpm for 30 minutes, take the bottom sediment and wash it with ethanol 3 times , The ethanol dispersion of the molybdenum disulfide nano-layer is obtained.

[0083] The ethanol dispersion of the molybdenum disulfide nanolayer is treated in a vacuum drying oven at 70° C. for 12 hours to obtain a dried molybdenum disulfide nanolayer.

[0084] The above-mentioned molybdenum disulfide nano layer and carbon nanofibers are dissolved in ultrapure water at a weight ratio of 1:1 to form a mixed solution. The mixed s...

Example Embodiment

[0091] Example 2

[0092] Put 6g of molybdenum disulfide powder in 120ml of nitromethylpyrrolidone (NMP) and ball mill for 4h to obtain a mixed solution of 50mg / ml. The mixed solution is treated at 25℃ under ultrasonic frequency of 60Hz for 4h to obtain 50mg / ml containing disulfide NMP dispersion of molybdenum.

[0093] Centrifuge the above-mentioned NMP dispersion of molybdenum disulfide at 3000 rpm for 20 minutes, take out 3 / 4 of the supernatant, centrifuge the taken out supernatant at 10000 rpm for 40 minutes, take the bottom sediment and wash it with ethanol 4 times , The ethanol dispersion of the molybdenum disulfide nano-layer is obtained.

[0094] The ethanol dispersion of the molybdenum disulfide nanolayer is treated in a vacuum drying oven at 80°C for 15 hours to obtain a dried molybdenum disulfide nanolayer.

[0095] The molybdenum disulfide nano layer, carbon nanofibers and cobalt tetroxide are dissolved in ultrapure water in a weight ratio of 1:2:0.5 to form a mixed solut...

Example Embodiment

[0100] Example 3

[0101] Put 5g of molybdenum disulfide powder in 100ml of nitromethylpyrrolidone (NMP) and ball mill for 5h to obtain a mixed solution of 50mg / ml. The mixed solution is treated at 20℃ under ultrasonic frequency of 100Hz for 6h to obtain 50mg / ml containing disulfide NMP dispersion of molybdenum.

[0102] Centrifuge the above-mentioned NMP dispersion of molybdenum disulfide at 4000rpm for 25min, take out 3 / 4 of the supernatant, centrifuge the taken-out supernatant at 10500rpm for 35min, take the bottom sediment and wash it with ethanol 5 times , The ethanol dispersion of the molybdenum disulfide nano-layer is obtained.

[0103] The ethanol dispersion of the molybdenum disulfide nanolayer is treated in a vacuum drying oven at 90° C. for 24 hours to obtain a dried molybdenum disulfide nanolayer.

[0104] The molybdenum disulfide nanolayer, carbon nanofibers, manganese dioxide and reduced graphene oxide are dissolved in ultrapure water at a weight ratio of 3:1:1:1 to for...

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Abstract

The invention discloses a three-dimensional material, a preparation method thereof, and an electrode utilizing the three-dimensional material and used for a supercapacitor. The three-dimensional material is a porous compound of a three-dimensional spatial structure, wherein the porous compound comprises a framework and a flake-like substance having a thickness of 1-20 nm and attached onto the framework. The preparation method of the three-dimensional material comprises the steps of preparing a few layers (1 to 10 layers) of ultra-thin flake-like substances, and subjecting the ultra-thin flake-like substances with a framework precursor and an optional auxiliary filler to mixing, freeze-drying, thermal treatment and the like. The electrode used for the supercapacitor and prepared by pressingthe three-dimensional material has the advantages of high specific capacitance, excellent energy and power densities, good cycle performance and low price, and has great potential for application infields such as electronic communications and mobile equipment.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and relates to a three-dimensional material, its preparation method and application, in particular to a three-dimensional material, its preparation method and its application in supercapacitor electrodes. Background technique [0002] With the outbreak of the energy crisis and the intensification of environmental pollution worldwide, the society's requirements for energy conservation and environmental protection are also getting higher and higher. Therefore, governments at all levels in various countries are sparing no effort to find a way out in the research and development of new renewable clean energy. Today, human beings have completed the development or are in the research stage of environmental protection energy is rich and diverse. These include solar, wind, nuclear, tidal, hydrogen, and more. In order to make rational and effective use of these new energy sources, energy storage...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30H01G11/32H01G11/86
CPCH01G11/24H01G11/30H01G11/32H01G11/86Y02E60/13
Inventor 于淑会王超罗遂斌符显珠孙蓉
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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