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Method for preparing supercapacitor electrode material from perilla-based activated carbon and application

A technology for preparing supercapacitors and activated carbon, applied in the field of electrochemistry, can solve the problems of secondary pollution and waste of resources, and achieve the effect of low cost and good cycle performance

Active Publication Date: 2020-08-25
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] If the plant biomass is not properly treated, it will not only cause waste of resources, but also may cause secondary pollution

Method used

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  • Method for preparing supercapacitor electrode material from perilla-based activated carbon and application
  • Method for preparing supercapacitor electrode material from perilla-based activated carbon and application
  • Method for preparing supercapacitor electrode material from perilla-based activated carbon and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Wash the perilla with deionized water, dry it in an oven at 105°C for 12 hours, take it out, crush it and save it for later use; put the perilla powder into a tube-type resistance furnace, and heat it to 600°C at a heating rate of 5°C / min , and kept at this temperature for 60 minutes, during which nitrogen protection was passed, and after cooling to room temperature, the perilla biochar was obtained.

[0034] Mix analytically pure potassium hydroxide and perilla biochar in a mass ratio of 1:1, add a small amount of deionized water, place the mixture in a tube-type resistance furnace, heat it to 800 °C at a heating rate of 5 °C / min, and The temperature was kept at this temperature for 1 h, during which the nitrogen was protected, and the product was taken out after cooling to room temperature.

[0035] Put the product in (V 浓盐酸 :V 去离子水 =1:9) in dilute hydrochloric acid, ultrasonic treatment for 1h, ultrasonic power 70W, after filtration, the product was boiled and wash...

Embodiment 2

[0037] Wash the perilla with deionized water, dry it in an oven at 105°C for 12 hours, take it out, crush it and save it for later use; put the perilla powder into a tube-type resistance furnace, and heat it to 600°C at a heating rate of 5°C / min , and kept at this temperature for 60 minutes, during which nitrogen protection was passed, and after cooling to room temperature, the perilla biochar was obtained.

[0038] Mix analytically pure potassium hydroxide and perilla biochar at a mass ratio of 2:1, add a small amount of deionized water, place the mixture in a tube-type resistance furnace, heat it to 800 °C at a heating rate of 5 °C / min, and The temperature was kept at this temperature for 1 h, during which the nitrogen was protected, and the product was taken out after cooling to room temperature.

[0039] Put the product in (V 浓盐酸 :V 去离子水 =1:9) in dilute hydrochloric acid, ultrasonic treatment for 1h, ultrasonic power 70W, after filtration, the product was boiled and wash...

Embodiment 3

[0041] Wash the perilla with deionized water, dry it in an oven at 105°C for 12 hours, take it out, crush it and save it for later use; put the perilla powder into a tube-type resistance furnace, and heat it to 600°C at a heating rate of 5°C / min , and kept at this temperature for 60 minutes, during which nitrogen protection was passed, and after cooling to room temperature, the perilla biochar was obtained.

[0042]Mix analytically pure potassium hydroxide and perilla biochar in a mass ratio of 3:1, add a small amount of deionized water, place the mixture in a tube-type resistance furnace, heat it to 800 °C at a heating rate of 5 °C / min, and The temperature was kept at this temperature for 1 h, during which the nitrogen was protected, and the product was taken out after cooling to room temperature.

[0043] Put the product in (V 浓盐酸 :V 去离子水 =1:9) in dilute hydrochloric acid, ultrasonic treatment for 1h, ultrasonic power 70W, after filtration, the product was boiled and washe...

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Abstract

The invention relates to a method for preparing a supercapacitor electrode material from perilla-based activated carbon, and belongs to the field of electrochemistry. The preparation method of the perilla-based activated carbon with the high specific surface area comprises the following steps: carbonizing perilla powder, uniformly mixing the carbonized perilla powder with a certain mass of potassium hydroxide, putting the mixture into a tubular resistance furnace, and activating under the protection of nitrogen to prepare activated carbon with the specific surface area of 3530m < 2 > / g and developed mesopores; the activated carbon is used as an electrode material of a supercapacitor, and is high in specific capacitance and good in cycle performance; by using the remediation plant biomass to prepare the activated carbon, not only can economic benefits be brought, but also a thought can be provided for resource utilization of the remediation plant biomass.

Description

technical field [0001] The invention relates to a preparation method and application of a supercapacitor electrode material, belonging to the field of electrochemistry. Background technique [0002] The phenomenon of heavy metal pollution in soil is serious in our country, and soil heavy metal pollution poses a serious threat to the ecological environment and human health. Phytoremediation technology is a green ecological management technology developed in recent years. It uses heavy metal enrichment or hyperaccumulation plants to absorb heavy metals in the soil and accumulate them in plants, and harvest the plants to achieve the purpose of removing heavy metal pollutants in the soil. How to dispose of the biomass of restoration plants after harvest has become a difficult problem. The traditional disposal technology draws on solid waste treatment methods, such as incineration, composting, compressed landfill and pyrolysis, etc. Most of these methods use Restoration plants a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/348C01B32/324H01G11/34H01G11/44H01G11/86
CPCC01B32/348C01B32/324H01G11/34H01G11/44H01G11/86Y02E60/13
Inventor 林瑞余郑新宇肖清铁彭军游武王玉洁
Owner FUJIAN AGRI & FORESTRY UNIV
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