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Nitrogen-containing carbon material for supercapacitosr, preparation method thereof, and supercapacitor electrode material

A technology of supercapacitors and nitrogen-carbon materials, which is applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of limiting the increase of specific capacitance and small specific surface area of ​​carbon materials, and achieve the effect of increasing specific capacitance, increasing specific capacity, and increasing specific surface area.

Active Publication Date: 2016-01-20
深圳博磊达新能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area of ​​the carbon material prepared by this method is still small, which limits the further improvement of its specific capacitance.

Method used

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  • Nitrogen-containing carbon material for supercapacitosr, preparation method thereof, and supercapacitor electrode material
  • Nitrogen-containing carbon material for supercapacitosr, preparation method thereof, and supercapacitor electrode material
  • Nitrogen-containing carbon material for supercapacitosr, preparation method thereof, and supercapacitor electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The preparation method of the supercapacitor nitrogen-containing carbon material of the present embodiment comprises the following steps:

[0039] 1) Polymer preparation: add 2.1g of pyrrole monomer into 150mL of deionized water, stir evenly to make solution A, and pass nitrogen into it for protection; dissolve 5.13g of ammonium persulfate in 50mL of water to form solution B; At 0°C, slowly add solution B dropwise to solution A, stir to allow polymerization to occur, and the reaction time is 6 hours to obtain a pre-polymerization reaction product;

[0040] Transfer the pre-polymerization reaction product into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 200°C for 12 hours; filter the hydrothermal reaction product with suction, wash with deionized water, filter with suction, wash with ethanol, and filter with suction, until The filtrate was colorless, and the filtered residue was vacuum-dried at 120°C for 12 hours to obtain the polypyrrole produ...

Embodiment 2

[0046] The preparation method of the nitrogen-containing carbon material of the present embodiment comprises the following steps:

[0047] 1) Add 2.1g of pyrrole monomer into 150mL deionized water, stir evenly to make solution A, and pass nitrogen into it for protection; add 8.0g of FeCl 3 Dissolve in 100mL of water to prepare solution B; slowly add solution B dropwise to solution A at 50°C, stir to allow polymerization to occur, and the reaction time is 6 hours to obtain a pre-polymerization reaction product;

[0048] Transfer the pre-polymerization reaction product into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 180°C for a reaction time of 8 hours; suction-filter the hydrothermal reaction product, wash with deionized water, suction-filter, ethanol, and suction-filter until The filtrate was colorless, and the filtered residue was vacuum-dried at 80°C for 12 hours to obtain the polypyrrole product;

[0049] 2) Put the polypyrrole product prepared ...

Embodiment 3

[0054] The preparation method of the nitrogen-containing carbon material of the present embodiment comprises the following steps:

[0055] 1) Add 2.1g of pyrrole monomer into 150mL of deionized water, stir evenly to make solution A, and pass nitrogen into it for protection; add 3.0g of H 2 o 2 Dissolve in 50mL of water to prepare solution B; slowly add solution B dropwise to solution A at 10°C, stir to cause polymerization reaction, and the reaction time is 8 hours to obtain the prepolymerization reaction product;

[0056] Transfer the pre-polymerization reaction product into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 200°C for a reaction time of 6 hours; suction-filter the hydrothermal reaction product, wash with deionized water, filter with suction, wash with ethanol, and filter with suction, until The filtrate was colorless, and the filtered residue was vacuum-dried at 60°C for 24 hours to obtain the polypyrrole product;

[0057] 2) Put the pol...

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Abstract

Belonging to the technical field of supercapacitors, the invention relates to a nitrogen-containing carbon material for supercapacitors, a preparation method thereof, and a supercapacitor electrode material. The preparation method of the nitrogen-containing carbon material for supercapacitors includes the steps of: 1) under the protection of an inert gas, subjecting a nitrogen-containing polymer to heat preservation at 500-900DEG C for 2-6 h to obtain a carbonization product; 2) mixing the carbonization product obtained in step 1) with an activating agent, conducting heat preservation under inert gas protection at 700-900DEG C for 1-2h, and performing cooling to obtain an activation product, with the carbonization product and the activating agent being in a mass ratio of 1:2-1:6; and 3) will step 2) washing the activation product obtained in step 2) with acid, and carrying out filtering and vacuum drying, thus obtaining the nitrogen-containing carbon material for supercapacitors. The preparation method provided by the invention increases the specific surface area of the nitrogen-containing carbon material.

Description

technical field [0001] The invention relates to a nitrogen-containing carbon material for a supercapacitor, a preparation method thereof, and an electrode material for a supercapacitor, belonging to the technical field of supercapacitors. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, have the advantages of high power density, fast charging and discharging, long service life, good safety performance, and low pollution. They have become a new type of energy storage device that has attracted much attention around the world. Supercapacitors can be widely used in backup power, portable mobile power, hybrid electric vehicle power and other fields, and have a good application prospect. A supercapacitor consists of positive and negative electrode sheets (electrode materials), electrolyte, diaphragm, collector and packaging material. The performance of supercapacitors mainly depends on the electrode materials on the positive and negative el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02H01G11/34
CPCY02E60/13
Inventor 王燕张帆王磊
Owner 深圳博磊达新能源科技有限公司
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