Preparation method for activated carbon/carbon nano tube mixed electrode material, and product thereof and application

A technology of carbon nanotubes and mixed electrodes, which is applied in the manufacture of hybrid/electric double-layer capacitors, carbon-silicon compound conductors, cables/conductors, etc., can solve the limitations of supercapacitors such as small-scale research and testing, complex equipment used, and high preparation costs. problems, to achieve the effect of low preparation cost, convenient operation and simple equipment

Active Publication Date: 2010-12-08
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although CNTs have shown various excellent properties in supercapacitor applications, due to their high preparation costs and complex equipment used, CNT-based supercapacitors are currently limited to small-scale research and testing.

Method used

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  • Preparation method for activated carbon/carbon nano tube mixed electrode material, and product thereof and application
  • Preparation method for activated carbon/carbon nano tube mixed electrode material, and product thereof and application
  • Preparation method for activated carbon/carbon nano tube mixed electrode material, and product thereof and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1) Accurately weigh 5.00g of mesophase carbon microspheres and 25.00g of KOH, add appropriate amount of deionized water and mix into a slurry;

[0041]2) the above-mentioned slurry is placed in the first stainless steel container with a movable lid, and the lid is covered; then it is put into another second stainless steel container with a larger volume and the same with a movable lid, and the petroleum coke powder (particle size 60μm) filled to full, cover the lid;

[0042] 3) Put the above-mentioned second stainless steel container covered with a lid in a muffle furnace, heat it up to 900°C at a heating rate of 2°C / min, keep it warm for 2 hours, and cool it to normal temperature with the furnace, and take out the product with a volume concentration of 5% The basic compounds and metal impurities brought in during the reaction were washed away with hydrochloric acid, then washed with deionized water until neutral, and dried at 80°C for 24 hours to obtain 2.39g of AMCMB / ...

Embodiment 2

[0047] 1) Accurately weigh 5.00g of mesophase carbon microspheres and 50.00g of KOH, add appropriate amount of deionized water and mix into a slurry;

[0048] 2) the above-mentioned slurry is placed in the first stainless steel container with a movable lid, and the lid is covered; then it is put into another second stainless steel container with a larger volume and the same with a movable lid, and the petroleum coke powder (particle size 80μm) filled to full, cover the lid;

[0049] 3) Place the above-mentioned second stainless steel container with the lid on in a muffle furnace, heat it to 1100°C at a heating rate of 5°C / min, keep it warm for 3h, and cool to room temperature with the furnace, and take out the product with a volume concentration of 10% The basic compounds and metal impurities brought in during the reaction were washed away with hydrochloric acid, then washed with deionized water until neutral, and dried at 60° C. for 30 h to obtain 1.73 g of AMCMB / CNT mixed el...

Embodiment 3

[0053] 1) Accurately weigh 5.00g of mesophase carbon microspheres and 50.00g of KOH, add appropriate amount of deionized water and mix into a slurry;

[0054] 2) the above-mentioned slurry is placed in the first stainless steel container with a movable lid, and the lid is covered; then it is put into another second stainless steel container with a larger volume and the same with a movable lid, and the petroleum coke powder (particle size 100μm) filled to full, cover the lid;

[0055] 3) Put the above-mentioned second stainless steel container with the lid on in a muffle furnace, heat it up to 1000°C at a heating rate of 4°C / min, keep it warm for 5h, and cool it to room temperature with the furnace, and take out the product with a volume concentration of 5%. 2.02 g of AMCMB / CNT mixture was obtained after washing with deionized water to neutrality, and drying at 90°C for 20 hours;

[0056] The specific surface area of ​​the activated carbon / carbon nanotube hybrid electrode mate...

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Abstract

The invention discloses a preparation method for an activated carbon / carbon nano tube mixed electrode material, and a product thereof and application. The method comprises the following steps of: 1) weighing raw materials according to the mass ratio of potassium hydroxide to mesocarbon microbeads (MCMB) of 5-10:1, and adding water for mixing to form paste; 2) placing the paste into a first stainless steel container, sealing the first stainless steel container, placing the first sealed stainless steel container into a second stainless steel container with a larger volume, filling petroleum coke powder into the second stainless steel container, and sealing the second stainless steel container; and 3) placing the second stainless steel container into a muffle furnace, raising the temperature to 900 to 1,100 DEG C, preserving the heat for 2 to 5 hours, cooling the second stainless steel container with the furnace to normal temperature, taking the reactant out, washing the reactant with a 5 to 10 percent hydrochloric acid to remove impurities, washing the reactant with deionized water till the reactant is neutral, and drying the reactant to obtain the AMCMB / CNT mixed electrode material. Compared with the prior art, the method has the advantages of no need of protecting a gas supply device, simple equipment and low production cost.

Description

technical field [0001] The invention relates to an electrode material, in particular to a preparation method of an active carbon / carbon nanotube mixed electrode material and its product and application. Background technique [0002] Under the pressure of the oil crisis and environmental protection, governments of various countries are vigorously developing the new energy vehicle industry. High-energy and high-power energy storage devices are one of the most critical technologies for new energy vehicles. Supercapacitor (electrochemical double-layer capacitor) is a promising energy storage device, which has the advantages of excellent charge and discharge performance, good pulse power performance, long service life, moderate price and environmental friendliness. It is used in new energy vehicles and other Industrial energy storage devices occupy a place. [0003] Electrochemical electric double layer capacitor electrodes are mainly carbon-based materials, such as activated c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/04H01B13/00H01G9/058H01G11/86
Inventor 王红强李泽胜李庆余黄有国熊义梅李胜英
Owner GUANGXI NORMAL UNIV
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