A kind of catkin supercapacitor electrode material and preparation method and supercapacitor

A technology for supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors. Effects of cycle stability and abundant raw material reserves

Active Publication Date: 2018-04-24
HEILONGJIANG HACHUAN CARBON MATERIAL TECH CO LTD
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AI Technical Summary

Problems solved by technology

However, the complex preparation process of graphene and the high requirements for experimental equipment are not conducive to large-scale production

Method used

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Examples

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Embodiment Construction

[0014] The following examples describe the present invention in more detail.

[0015] According to the mass ratio of 1:1~2, mix 5g catkins with potassium hydroxide, grind them into powder and put them into a tube furnace. -2h, then increase the temperature to 850°C at 10°C / min for 1-2h, then cool naturally to obtain porous carbonized catkins.

[0016] According to the mass ratio of carbonized catkins and thiourea of ​​1:3~4, add 0.1g of porous carbonized catkins into the thiourea solution, stir vigorously for 0.5-1h, then heat at 80-90°C to evaporate the water to dryness; The material was sent into a tube furnace, and under the protection of argon, the temperature was raised to 800°C at a rate of 10°C / min, continued heating for 2-3 hours, and then cooled naturally to obtain nitrogen and sulfur doped carbonized catkin electrode materials.

[0017] Nitrogen-sulfur-doped carbonized catkins were used as the working electrode, the counter electrode was a platinum electrode, and a ...

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Abstract

The invention provides a catkin supercapacitor electrode material, a preparation method and a supercapacitor. Mix willow catkins and potassium hydroxide firstly at a heating rate of 5°C / min to 400°C for 1-2h, then at a heating rate of 10°C / min to 850°C for 1-2h, and then cool naturally to obtain Porous carbonized catkin electrode material. Add porous carbonized catkins into the thiourea solution, stir vigorously for 0.5-1h, then heat at 80-90°C to evaporate the water to dryness; under the protection of argon, raise the temperature to 800°C at a rate of 10°C / min ℃, continuous heating for 2‑3h and then natural cooling to obtain nitrogen and sulfur doped carbonized catkin electrode materials. The invention prepares a new type of carbon nano sheet material which has the characteristics of large specific surface area, many adsorption active points, two-dimensional porosity, simple preparation process and the like. Electrodes prepared from this carbon nanosheet material exhibit excellent capacitive performance.

Description

technical field [0001] The invention relates to a supercapacitor electrode material. The invention also relates to a preparation method of a supercapacitor electrode material. Background technique [0002] A supercapacitor is an energy storage device that not only uses an electric double layer capacitor to store energy, but also uses the redox reaction on the electrode / solution surface to store energy. It is also called an electrochemical capacitor or a pseudocapacitor. Supercapacitors have the advantages of fast charging and discharging with large currents, many cycles, low temperature operation, very few maintenance times, and a certain memory effect. According to different energy storage mechanisms, supercapacitors can be divided into electric double-layer capacitors, Faraday quasi-capacitors and hybrid capacitors. Supercapacitors are developing towards high specific power and high specific energy. Hybrid supercapacitors with transition metal oxides and porous carbon as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/86
CPCY02E60/13
Inventor 王贵领李一举陈曦张栋铭曹殿学徐盼盼
Owner HEILONGJIANG HACHUAN CARBON MATERIAL TECH CO LTD
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