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Method for preparing porous graphene electrode material by utilizing pyrolysis and activation of mulberry stem carbon

A technology of porous graphene and electrode materials, applied in the direction of graphene, hybrid capacitor electrodes, nano-carbon, etc., can solve the problem of high cost, achieve the effect of excellent product quality, high carbon content, and reduce energy consumption

Pending Publication Date: 2022-07-12
广西鲸络科技研发有限公司
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Problems solved by technology

Coconut shell charcoal has high adsorption capacity and large micropore volume, but the source of raw materials is mainly imported from Southeast Asian countries (Malaysia, Indonesia, Vietnam, etc.), the source of raw materials is restricted by foreign countries, and the cost is high

Method used

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  • Method for preparing porous graphene electrode material by utilizing pyrolysis and activation of mulberry stem carbon
  • Method for preparing porous graphene electrode material by utilizing pyrolysis and activation of mulberry stem carbon
  • Method for preparing porous graphene electrode material by utilizing pyrolysis and activation of mulberry stem carbon

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Embodiment

[0031] refer to figure 1 , the present invention utilizes mulberry charcoal pyrolysis activation to prepare the method for porous graphene electrode material, including:

[0032] 1. Collect mulberry stem raw materials for high temperature carbonization

[0033] Carbonization is the thermochemical processing of solid fuels or the thermal decomposition of organic compounds into carbon and other products in the absence of air.

[0034] Guangxi is very rich in mulberry resources. In 2020, the planting area of ​​mulberry trees will reach more than 3 million mu, and the annual resource of mulberry stems will reach 1 million tons. It is recyclable and renewable, and has the advantages of low cost, easy availability, low impurities, low ash content, and high carbon content. .

[0035] The present invention organizes personnel to collect mulberry stems in the fields of the mulberry planting area, and heats and decomposes the carbonized raw material products at a high temperature of a...

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Abstract

The invention provides a method for preparing a porous graphene electrode material through pyrolysis and activation of mulberry stem carbon, and belongs to the technical field of biomass activated carbon material preparation. According to the method, carbonized mulberry stems are used as a carbon source, superheated steam, carbon dioxide and potassium hydroxide are used as activating agents, the four substances are mixed and uniformly conveyed into high-temperature pyrolysis equipment for pyrolysis activation, and finally the porous graphene electrode material is directly prepared. The method has the advantages of abundant raw materials, high carbon content, simple process, low cost, suitability for industrial large-scale production and the like, and the porous graphene electrode material prepared by the method can be used as an energy storage electrode nano material for a supercapacitor and shows relatively high power energy density and electric energy storage capacity.

Description

technical field [0001] The invention belongs to the technical field of preparation of biomass activated carbon materials, in particular to a method for preparing porous graphene electrode materials by using mulberry charcoal pyrolysis activation. Background technique [0002] Supercapacitors refer to a new type of energy storage device between traditional capacitors and rechargeable batteries, and their capacity can reach hundreds to thousands of fahrenheit. Compared with traditional capacitors, it has larger capacity, specific energy or capacity density, wider operating temperature range and extremely long service life; No pollution. Compared with batteries and traditional physical capacitors, supercapacitors are mainly characterized by high power density, long cycle life, wide operating temperature limit, fast charge and discharge rate, safety and maintenance-free, and green environmental protection. Supercapacitors are novel devices that store energy through an interfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184H01G11/34H01G11/44H01G11/24
CPCC01B32/184H01G11/34H01G11/44H01G11/24C01B2204/32C01B2204/20C01B2204/04C01B2204/22Y02E60/13
Inventor 韦可壮廖弘苗韦家春
Owner 广西鲸络科技研发有限公司
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