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Preparation method of carbon-based electrode material and application thereof

A kind of electrode material, carbon-based technology, applied in the field of preparation of carbon-based electrode materials, can solve the problems that it is difficult to meet the requirements of complex structure of electronic equipment, it is difficult to meet the requirements of thick electrodes and shape customization at the same time, and achieve excellent capacitance storage capacity and cycle stability, abundant raw materials, and low price

Active Publication Date: 2020-01-03
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Generally, all-solid-state electrodes with directional channels have better ion transmission efficiency, but they are usually flat and inflexible, which is difficult to meet the requirements of complex structures in practical electronic devices.
As a result, the porous carbon powder prepared by traditional biomass chemical activation is difficult to meet the requirements of thick electrodes and shape customization at the same time

Method used

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  • Preparation method of carbon-based electrode material and application thereof
  • Preparation method of carbon-based electrode material and application thereof
  • Preparation method of carbon-based electrode material and application thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0047] A method for preparing a carbon-based electrode material, comprising:

[0048] (1) Get the orange peel with a thickness of 900 μm and softness, and cut the orange peel into a plane rectangle;

[0049] (2) Put the rectangular orange peel into a freeze dryer at -20°C to -60°C, freeze-dry for 24-72 hours until the peel is completely dry, so as to achieve the shape fixation;

[0050] (3) Put the orange peel with a fixed flat rectangle into a tube furnace, carbonize it at 800 °C for 2 hours in an argon atmosphere, and then cool it to room temperature in an argon atmosphere to obtain a carbon-based electrode material with a thickness of 850 μm. .

[0051] like figure 1 As shown, the natural orange peel has a microscopic pore structure, and these pore structures are interconnected.

[0052] like figure 2 As shown, the monolithic carbon-based electrode material obtained based on orange peel maintains a good macroscopic shape due to the direct carbonization of orange peel w...

Embodiment 2

[0057] A method for preparing a carbon-based electrode material, comprising:

[0058] (1) Take the orange peel with a thickness of 1000 μm and softness, and cut the orange peel into a plane pentagon;

[0059] (2) Put the pentagonal orange peel into a freeze dryer at -20°C to -60°C, freeze-dry for 24-72 hours until the peel is completely dry, so as to achieve the shape fixation;

[0060] (3) Put the orange peel with a fixed pentagon into a tube furnace, and carry out carbonization treatment at 800°C in an argon atmosphere for 2 hours, and then cool it to room temperature in an argon atmosphere to obtain a whole piece of orange peel with a thickness of 960 μm. carbon-based electrode materials.

Embodiment 3

[0062] A method for preparing a carbon-based electrode material, comprising:

[0063] (1) Take the orange peel with a thickness of 1100 μm and softness, cut the orange peel into strips, and then curl it into a spiral shape;

[0064] (2) Put the spiral-shaped orange peel into a freeze dryer at -20°C to -60°C, freeze-dry for 48 hours until the peel is completely dry, so as to fix the shape;

[0065] (3) Put the orange peel with a fixed spiral shape into a tube furnace, and carry out carbonization treatment at 900°C under a nitrogen atmosphere for 2 hours, and then cool it to room temperature under a nitrogen atmosphere to obtain a whole piece of carbon with a thickness of 1050 μm. base electrode material. like Figure 6 As shown, the helical monolithic carbon-based electrode material prepared from orange peel maintains a continuous monolithic carbon structure while achieving a helical shape at a thickness of 100 μm, which makes it suitable for specific application scenarios, s...

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Abstract

The invention relates to a preparation method of a carbon-based electrode material and an application thereof, belonging to the field of electrode materials. The preparation method of the carbon-basedelectrode material comprises the following steps of: taking biomass waste and cutting the biomass waste into required shapes or molds to obtain biomass materials with shapes or molds; drying the biomass material with a shape or mold to obtain the biomass material with a fixed shape or mold; the biomass material with a fixed shape or mold is directly put into a tubular furnace, heated and carbonized under a protective gas atmosphere, and the treated biomass material is cooled to room temperature under a protective gas atmosphere to obtain a whole carbon-based electrode material. The carbon-based electrode material provided by the invention has the advantages of simple preparation method, rich raw materials, low price, environmental protection, no use of chemical activator, customizable shape, interconnected graded porous system, higher specific surface area, and excellent capacitor storage capacity and cycle stability.

Description

technical field [0001] The invention relates to a preparation method and application of a carbon-based electrode material, belonging to the technical field of electrode materials. Background technique [0002] The rapid development of society requires a large amount of resource consumption and energy support, which leads to the excessive exploitation of fossil fuels, which in turn produces serious environmental pollution and a large number of social problems. Replacing traditional fossil fuels with renewable resources is currently considered one of the most promising ways. Biomass materials are a kind of green and renewable resources, and the full utilization of biomass resources is expected to fundamentally solve environmental problems. At the same time, biomass resources come from the accumulation of photosynthesis, so its huge reserves can fully meet the needs of human society. Biomass-derived carbon-based supercapacitors are a promising way for high value-added utiliza...

Claims

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Application Information

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IPC IPC(8): C01B32/324H01G11/24H01G11/34H01G11/44
CPCC01B32/324H01G11/24H01G11/34H01G11/44Y02E60/13
Inventor 王超王汉伟孙庆丰李彩彩
Owner ZHEJIANG FORESTRY UNIVERSITY
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