Method for producing expanded graphite carbon nanotube composite material and supercapacitor produced from expanded graphite carbon nanotube composite material

A technology of expanded graphite and carbon nanotubes, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problems of limited market application prospects, unsuitable industrial production, unstable preparation process, etc., and achieve easy large-scale production. And the effect of market application, low production cost, excellent electrical performance

Inactive Publication Date: 2017-04-19
LIANCHUANG AUTOMOBILE ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current graphene preparation process is unstable and prone to agglomeration, which is not suitable for industrial production, and the price is relatively high, which limits its market application prospects

Method used

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  • Method for producing expanded graphite carbon nanotube composite material and supercapacitor produced from expanded graphite carbon nanotube composite material
  • Method for producing expanded graphite carbon nanotube composite material and supercapacitor produced from expanded graphite carbon nanotube composite material
  • Method for producing expanded graphite carbon nanotube composite material and supercapacitor produced from expanded graphite carbon nanotube composite material

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Embodiment Construction

[0029] Such as figure 1 As shown, the invention provides a kind of manufacture method of expanded graphite carbon nanotube composite material, comprises the following steps:

[0030] 1) Expandable graphite is heated under an inert gas environment to obtain expanded graphite. In this embodiment, argon is used as the inert gas (other inert gases are also applicable), and the argon environment is 6×10 -3 m 3 / s-9×10 -3 m 3 / s, heating to 850°C-950°C for more than 20 minutes.

[0031] Preferably, the argon environment is 6×10 -3 m 3 / s, 8.33×10 -3 m 3 / s or 9×10 -3 m 3 / , heating to 850°C, 900°C or 950°C for 20 minutes or more.

[0032] 2) Soak the expanded graphite obtained in step 1) in the nickel chloride particles adsorbed by the nickel chloride solution, the concentration of the nickel chloride solution is 0.01mg / mL-0.03mg / mL, and the duration is greater than or equal to 2 hours.

[0033] Preferably, the concentration of the nickel chloride solution is 0.01 mg / mL, ...

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Abstract

The invention discloses a method for producing an expanded graphite carbon nanotube composite material. The method comprises: 1) heating expandable graphite in an inert gas to obtain expanded graphite; 2) immersing the expanded graphite in a nickel chloride solution; 3) thoroughly removing water from the expanded graphite subjected to the step 2) in a vacuum environment and then transferring the expanded graphite to a vacuum tubular furnace, and exhausting air; 4) inputting the reduction nickel catalyst while heating the tubular furnace, and after the temperature of the tubular furnace reaches the preset temperature, inputting carbon growth source and maintaining the state for a growth period; 5) closing the reduction nickel catalyst and the inputting of the carbon growth source, and obtaining the expanded graphite carbon nanotube composite material through cooling. The present invention also provides a supercapacitor made of the expanded graphite carbon nanotube composite material. The expanded graphite carbon nanotube composite material obtained by the manufacturing method of the invention is effectively increased in specific surface area and charge storage space and low in production cost. The method is simple and adapts to large-scale production and market application.

Description

technical field [0001] The invention relates to a method for manufacturing an expanded graphite carbon nanotube composite material, and also relates to a vehicle supercapacitor manufactured from the expanded graphite carbon nanotube composite material. Background technique [0002] Due to the advantages of less exhaust gas emission and low cost of use, hybrid electric vehicles are increasingly rising under the background of environmental protection and energy shortage. One of the key technologies of a hybrid electric vehicle is its energy storage device. As a new energy storage device between traditional capacitors and traditional batteries, supercapacitors have a capacity 20 to 200 times larger than traditional capacitors, and a power density 10 to 100 times larger than traditional batteries. They have excellent charge and discharge performance and up to 1000 It can be used in the braking energy recovery, motor starting and auxiliary power supply of hybrid electric vehicle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/36H01G11/86
CPCY02E60/13
Inventor 李振鹏栗工吴瑾张杰
Owner LIANCHUANG AUTOMOBILE ELECTRONICS
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