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Preparation method of waste tire thermal cracking carbon black electrode material for supercapacitor

A technology of thermal cracking carbon black and supercapacitors, which is applied in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, fibrous fillers, etc., and can solve problems such as failure to meet standards and low activated carbon

Inactive Publication Date: 2021-09-10
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific capacitance of activated carbon prepared by the above method is relatively low, which cannot reach the standard of supercapacitor electrode material actually required in industry.

Method used

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  • Preparation method of waste tire thermal cracking carbon black electrode material for supercapacitor
  • Preparation method of waste tire thermal cracking carbon black electrode material for supercapacitor
  • Preparation method of waste tire thermal cracking carbon black electrode material for supercapacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Put 10 g tire pyrolysis carbon black in a quartz boat, spread it evenly, then place it in the heating tube of a common tube furnace, and raise the temperature at a rate of 5 ℃ / min under the flow rate of 200 mL / min carbon dioxide gas The rate was increased from room temperature to 1000 °C for 2 h of heat treatment and activation. After the reaction was completed, it was cooled to room temperature, and the sample was taken out to obtain the first activated product.

[0032] 2) Weigh 5 g of the first activated product obtained in step 1), then add KOH for mixing according to the mass ratio of 1:4, then add 100 mL of CTAB solution with a concentration of 0.01 M in a beaker, and put it in a heating magnetic stirrer Heat to 50°C and stir for 12 hours to fully and evenly mix KOH and thermal cracking carbon black. After the stirring is completed, transfer to a blast drying oven for 8 hours at a temperature of 80°C until no obvious solution exists. Raise the temperature from ...

Embodiment 2

[0035] 1) Put 10 g tire pyrolysis carbon black in a quartz boat, spread it evenly, then place it in the heating tube of a common tube furnace, and raise the temperature at a rate of 5 ℃ / min under the flow rate of 300 mL / min carbon dioxide gas The rate was increased from room temperature to 1000 °C for 2 h of heat treatment and activation. After the reaction was completed, it was cooled to room temperature, and the sample was taken out to obtain the first activated product.

[0036]2) Weigh 5 g of the first activated product obtained in step 1), then add KOH for mixing according to the mass ratio of 1:4, then add 100 mL of CTAB solution with a concentration of 0.01 M in a beaker, and put it in a heating magnetic stirrer Heat to 50°C and stir for 12 hours to fully and evenly mix KOH and thermal cracking carbon black. After the stirring is completed, transfer to a blast drying oven for 8 hours at a temperature of 80°C until no obvious solution exists. Raise the temperature from r...

Embodiment 3

[0039] 1) Put 10 g tire pyrolysis carbon black in a quartz boat, spread it evenly, then place it in the heating tube of a common tube furnace, and raise the temperature at a rate of 5 ℃ / min under the flow rate of 300 mL / min carbon dioxide gas The rate was increased from room temperature to 1000 °C for 2 h of heat treatment and activation. After the reaction was completed, it was cooled to room temperature, and the sample was taken out to obtain the first activated product.

[0040] 2) Weigh 5 g of the first activated product obtained in step 1), then add KOH for mixing according to the mass ratio of 1:4, then add 100 mL of CTAB solution with a concentration of 0.01 M in a beaker, and put it in a heating magnetic stirrer Heat to 50°C and stir for 12 hours to fully and evenly mix KOH and thermal cracking carbon black. After the stirring is completed, transfer to a blast drying oven for 8 hours at a temperature of 80°C until no obvious solution exists. Raise the temperature from ...

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Abstract

The invention discloses a preparation method of a waste tire thermal cracking carbon black electrode material for a supercapacitor, waste tire thermal cracking carbon black is used as a raw material, and the electrode material obtained by composite activation not only retains the original graphitization degree of the material, but also increases part of defects. The electrode material has a certain pore structure, and the interface area between the electrode material and an electrolyte is increased, so that higher specific capacitance is obtained, and the standard of the electrode material for the supercapacitor is achieved. According to the invention, the preparation of the electrode material for the waste tire thermal cracking carbon black based super capacitor is successfully realized, the resource utilization of the waste tire is improved, the cost of the electrode material for the super capacitor is reduced, the national green development requirement is met, and the application prospect is good.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor electrode materials, and in particular relates to a preparation method of waste tire thermal cracking carbon black electrode materials for supercapacitors. Background technique [0002] With the increase of vehicles, piles of discarded tires have become "black pollution", which seriously pollutes the environment and affects people's healthy life. Recycling has become an urgent problem to be solved. Tires are mainly composed of 55-60% rubber, 30-33% carbon black, 6-9% organic additives and 3-6% inorganic additives. After pyrolysis, waste tires can recover oil, gas and Thermally cracked carbon black. Pyrolysis carbon black is the key product of tire pyrolysis, and its quality restricts the economic benefit of the whole process. Therefore, it is of great significance to solve the recycling problem of pyrolysis carbon black, which can not only improve the economic benefits of waste tires, but...

Claims

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Application Information

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IPC IPC(8): C09C1/48C09C1/56H01G11/32H01G11/86
CPCC09C1/482C09C1/56H01G11/32H01G11/86Y02E60/13
Inventor 陈建伍言康侯圣平卿龙李瑞胡茂源
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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