A preparation method of layered porous activated carbon electrode material for supercapacitor

A technology of porous activated carbon and supercapacitor, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of single structure, unfavorable popularization and use, etc., and achieves improved capacitance performance, simple and easy operation of the preparation process, and environmental friendliness. Effect

Active Publication Date: 2019-01-22
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional activated carbon is mainly microporous and has a single structure, which is not conducive to its popularization and use.

Method used

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  • A preparation method of layered porous activated carbon electrode material for supercapacitor
  • A preparation method of layered porous activated carbon electrode material for supercapacitor
  • A preparation method of layered porous activated carbon electrode material for supercapacitor

Examples

Experimental program
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Effect test

Embodiment 1

[0031] 1) Carbonization treatment of casings: Soak the casings in warm water at 60°C for 10 hours, wash and dry them, then weigh 10g casings, and weigh 10g casings by figure 1 It can be seen that the casing has an obvious layered structure.

[0032] The sausage casings were laid flat and stacked in a corundum boat, moved into a tube furnace under a nitrogen atmosphere, raised to 500°C at a heating rate of 1°C / min, and carbonized at a constant temperature for 5 hours to obtain a layered casing charcoal material.

[0033] The SEM image of the above layered casing carbon material is shown in figure 2 shown by figure 2 It can be seen that the pre-carbonized casing material is irregular block with obvious layered structure, and the surface of the block sample is relatively smooth without obvious holes and channels.

[0034] 2) Weigh 12g of potassium hydroxide and dissolve it in an appropriate amount of deionized water to form lye.

[0035] Weigh 3g of sausage-coated charcoal m...

Embodiment 2

[0043] 1) Carbonization treatment of casings: Soak the casings in warm water at 90°C for 5 hours, wash and dry them, weigh 10g of casings, lay them flat and stack them in a corundum boat, move them into a tube furnace under a nitrogen atmosphere, and heat up at a rate of 5°C / min The temperature was raised to 800°C, and carbonized at a constant temperature for 2 hours to obtain a layered casing carbon material.

[0044] 2) Weigh 15g of potassium hydroxide and dissolve it in an appropriate amount of deionized water to form lye.

[0045] Weigh 3g of sausage-coated charcoal material and add it to the lye, stir evenly with a glass rod, ultrasonicate for 30 minutes, seal with plastic wrap, soak for 5 hours at room temperature, and then dry in an oven to obtain a mixture.

[0046]3) Move the mixture into a nickel crucible, move it into a tube furnace under a nitrogen atmosphere, raise the temperature to 900°C at a heating rate of 10°C / min, activate at a constant temperature for 2 hou...

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Abstract

The invention discloses a method for preparing a layered porous activated carbon electrode material for supercapacitors, and relates to the technical field of supercapacitor electrode materials. After the sausage casing is carbonized, it is mixed with KOH and deionized water under ultrasonic conditions, and the mixture is obtained after drying. The mixture is then activated in a nitrogen atmosphere and finally ground to obtain a layered porous activated carbon electrode material for supercapacitors. Casing casings are rich in sources, renewable, and environmentally friendly. Activated carbon materials prepared through a simple treatment process have a layered structure, developed specific surface area, and reasonable pore size distribution. They are used as electrode materials and have good capacitance properties in supercapacitors. The preparation process of the invention is simple and easy to operate, and has great significance for reducing the production cost of high-surface activated carbon for supercapacitors.

Description

technical field [0001] The invention relates to the technical field of supercapacitor electrode materials. Background technique [0002] As the global energy crisis and environmental pollution intensify, it is imperative to develop sustainable new energy and advanced energy storage technologies. Supercapacitor is a new type of electrochemical energy storage device. Compared with traditional capacitors, supercapacitors have larger specific capacity and higher energy density; compared with rechargeable batteries, supercapacitors have higher power density and higher energy density. Long cycle life, as well as the advantages of fast charging and discharging with high current. This makes supercapacitors have broad application prospects in many fields such as electronic equipment, electric vehicles, and aerospace. [0003] Activated carbon has become the preferred electrode material for supercapacitors because of its high specific surface area and porosity, and its advantages of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/32H01G11/26H01G11/30H01G11/86
CPCY02E60/13
Inventor 张淮浩徐宗颖李丹丹李俞赵静
Owner YANGZHOU UNIV
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