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Preparation method of supercapacitor based on working electrode made of hierarchical porous carbon material

A technology for supercapacitors and working electrodes, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of inability to achieve large-scale mass production, high synthesis cost by template method, and reduced commercial value, so as to improve capacitance Performance and storage capacity, convenient for transportation and storage, wide range of applications

Inactive Publication Date: 2019-08-20
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods for preparing hierarchical porous carbon materials mainly include template method, activator method, direct carbonization method, etc., but the synthesis cost of template method is high, the yield is low, the synthesis is complicated, and large-scale mass production cannot be realized, which greatly reduces the its commercial value

Method used

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  • Preparation method of supercapacitor based on working electrode made of hierarchical porous carbon material
  • Preparation method of supercapacitor based on working electrode made of hierarchical porous carbon material
  • Preparation method of supercapacitor based on working electrode made of hierarchical porous carbon material

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) Place the biomass tata pine in an oven at 110° C. for seven days until the biomass is completely dry, and then grind it into powder in a pulverizer to obtain material A1.

[0033] (2) Transfer the material A1 to a nickel boat and place it in a tube furnace, raise the temperature from room temperature to 300°C for 60 minutes under the condition of nitrogen as a protective gas, then keep it at 300°C for 60 minutes, and then heat up for 60 minutes to 600°C and carbonized at 600°C for 2 hours, and then naturally cooled to room temperature to obtain material B1;

[0034] (3) Mix 0.5g of material B1 and KOH solid in a 500mL beaker at a mass ratio of 1:4, then add 5-7mL of deionized water and stir well to make it evenly mixed. After standing for 8 hours at room temperature, place it at 105℃ drying in an oven to obtain material C1;

[0035](4) Transfer the material C1 to a nickel boat and place it in a tube furnace, raise the temperature from room temperature to 300°C for ...

Embodiment 2

[0038] (1) Place the biomass tata pine in an oven at 110°C for seven days until the biomass is completely dry, and then grind it into powder in a pulverizer to obtain material A2;

[0039] (2) Transfer the material A to a porcelain boat and place it in a tube furnace, raise the temperature from room temperature to 300°C for 60 minutes with nitrogen as the protective gas, then keep it at 300°C for 60 minutes, and then heat up for 60 minutes to 600°C and carbonized at 600°C for 2 hours, and then naturally cooled to room temperature to obtain material B2;

[0040] (3) Mix 0.5g of material B2 and KOH solid in a 500mL beaker at a ratio of 1:3 by mass, then add 5-7mL of deionized water and stir well to make it evenly mixed, let it stand at room temperature for 8 hours and then dry it to obtain Material C2;

[0041] (4) Transfer the material C to a nickel boat and place it in a tube furnace, raise the temperature from room temperature to 300°C for 60 minutes under the condition of n...

Embodiment 3

[0044] (1) Place the biomass tata pine in an oven at 110°C for seven days until the biomass is completely dry, and then grind it into a powder in a pulverizer to obtain material A3;

[0045] (2) Transfer the material A3 to a porcelain boat and place it in a tube furnace, raise the temperature from room temperature to 300°C for 60 minutes with nitrogen as the protective gas, then keep it at 300°C for 60 minutes, and then heat up for 60 minutes to 600°C and carbonized at 600°C for 2 hours, and then naturally cooled to room temperature to obtain material B3;

[0046] (3) Mix 0.5g of material B3 and KOH solid in a 500mL beaker at a ratio of 1:4 by mass, then add 5-7mL of deionized water and stir well to make it evenly mixed. drying in an oven to obtain material C3;

[0047] (4) Transfer the material C3 to a nickel boat and place it in a tube furnace, raise the temperature from room temperature to 300°C for 60 minutes under the condition of nitrogen as a protective gas, then keep ...

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Abstract

The invention discloses a preparation method of a supercapacitor based on a working electrode made of a hierarchical porous carbon material. The supercapacitor comprises an acidic three-electrode system, an alkaline three-electrode system, an acidic two-electrode system and an alkaline two-electrode system, the specific surface area of the hierarchical porous carbon material is 3948.643 m2 / g, thetotal pore volume is 2.518 cm3 / g, and the hierarchical porous carbon material contains a large number of micropores, mesopores and macropores. The method has the advantages of the simple process, thelow cost, recycling and less material consumption.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and in particular relates to a preparation method of a supercapacitor based on a working electrode of a hierarchical porous carbon material. Background technique [0002] Due to the excessive use of fossil energy such as coal and oil during the two industrial revolutions, the ecological environment of the earth has been severely damaged. Therefore, since the beginning of the 21st century, various countries have been seeking and developing efficient and clean renewable green energy to achieve social sustainability. Continuous development. As a new type of energy storage device, supercapacitor has the advantages of high power density, fast charge and discharge rate, wide operating temperature, long cycle life, low self-discharge, high safety performance and environmental friendliness, and can be used in transportation, industry, etc. As well as important fields such as the military, it has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/32H01G11/44H01G11/86
CPCH01G11/30H01G11/32H01G11/44H01G11/86Y02E60/13
Inventor 高书燕张一许鹤王天意
Owner HENAN NORMAL UNIV
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