Supercapacitor combination electrode and making method thereof

A supercapacitor and composite electrode technology, applied in the field of capacitor electrodes, can solve the problems of limited resources and high price, and achieve the effects of large contact area, convenience, fast cost, and low cost

Inactive Publication Date: 2013-05-01
福建省辉锐材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Supercapacitor combination electrode and making method thereof
  • Supercapacitor combination electrode and making method thereof
  • Supercapacitor combination electrode and making method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Place the nickel mesh (aperture 0.01mm) in a horizontal tube furnace, pass through argon (flow rate 500 s.c.c.m.) and hydrogen (200 s.c.c.m.) at 1000°C, heat for 10 minutes, remove the surface oxide layer, and then pass through Inject methane gas (5 s.c.c.m.), after 5 minutes, turn off the methane gas, keep the flow rate of argon and hydrogen constant, cool the sample to room temperature at a rate of 200°C / min, turn off the argon and hydrogen, and obtain a monolayer 3D graphene.

[0032] Electron microscopy scanning of single-layer three-dimensional graphene, such as figure 2 As shown in A-D, it can be seen that the graphene grown on the nickel mesh has a three-dimensional structure, and the surface is smooth and the thickness is relatively thin. figure 2 E shows that three-dimensional graphene is a single-layer structure.

Embodiment 2

[0034] Place the nickel mesh (aperture 0.1mm) in a horizontal tube furnace, pass in neon gas (flow rate 300 s.c.c.m.) and hydrogen gas (100 s.c.c.m.) at 800°C, heat for 10 minutes, remove the surface oxide layer, and then pass through Inject ethane gas (1 s.c.c.m.), after 10 minutes, turn off the ethane gas, keep the flow rate of neon and hydrogen constant, cool the sample to room temperature at a rate of 200°C / min, and turn off the neon and hydrogen.

Embodiment 3

[0036]Place the nickel mesh (aperture 0.6mm) in a horizontal tube furnace, pass through argon gas (flow rate 400 s.c.c.m.) and hydrogen gas (150 s.c.c.m.), and heat at 1300°C for 5 minutes. After removing the surface oxide layer, use Argon (6 s.c.c.m.) was bubbled in the tank of methanol, and after 2 minutes of methanol gas, the methanol gas was turned off, and the flow rate of argon and hydrogen was kept constant, and the sample was rapidly cooled to room temperature at a rate of 300°C / min. , turn off the argon and hydrogen.

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Abstract

The invention discloses a supercapacitor combination electrode and a making method thereof. The supercapacitor combination electrode comprises a nickel wire mesh or copper wire mesh base layer, a Co3S4 nanosphere film outer layer and a three-dimensional graphene middle layer arranged between the base layer and the outer layer. The combination electrode is made by the following steps of: using a nickel wire mesh or a copper wire mesh as the base layer, growing the three-dimensional graphene layer on the base layer by a chemical vapor deposition method, and then growing the Co3S4 nanosphere film layer on the three-dimensional graphene layer by a hydrothermal method. The combination electrode disclosed by the invention has the advantages that the sandwich structure of the base layer, the three-dimensional graphene and cobaltous sulfide is an extremely stable superior structure, and the capacitance value of the electrode is higher than that of a common capacitor.

Description

technical field [0001] The invention relates to a capacitor electrode, in particular to a supercapacitor composite electrode and a preparation method thereof. Background technique [0002] At present, the capacitors generally produced and sold in the market have problems such as slow charging speed, low current density, and short average life. Graphite composite material is a potential ideal material, because graphene has extraordinary electrical properties, unusual mechanical strength, high chemical stability, and graphite is low in cost and can be collected in large quantities. There are also supercapacitors based on graphene a lot of. [0003] Three-dimensional graphene material is different from two-dimensional graphene in structure. Two-dimensional graphene is easy to agglomerate, difficult to disperse, and it is difficult to obtain a material with a high specific surface area. It has a three-dimensional hollow porous network structure, and the network wall is graphene...

Claims

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Application Information

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IPC IPC(8): H01G11/26H01G11/30H01G11/24H01G11/86
Inventor 鲁兵安许志
Owner 福建省辉锐材料科技有限公司
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