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A heteroatom-doped activated carbon material having a porous structure and a preparing method and application thereof

A porous structure and heteroatom technology, applied in the field of new energy materials, can solve problems such as complex processes, and achieve the effects of high reversible capacity, short time, and large specific surface area

Inactive Publication Date: 2018-12-14
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects and deficiencies in the complex process of preparing carbon materials with unique nano-morphology in the prior art, and to provide a method for preparing activated carbon materials doped with porous structure heteroatoms

Method used

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  • A heteroatom-doped activated carbon material having a porous structure and a preparing method and application thereof
  • A heteroatom-doped activated carbon material having a porous structure and a preparing method and application thereof
  • A heteroatom-doped activated carbon material having a porous structure and a preparing method and application thereof

Examples

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Embodiment 1

[0038] This embodiment provides a heteroatom-doped activated carbon material with a porous structure, which is prepared by the following method.

[0039] Weigh 3g of orange peel, clean it, and put the pieces into a 200ml hydrothermal reaction kettle, add 150ml of water, heat at 150°C for 20 hours, wash and dry after the hydrothermal reaction, and obtain a pre-carbonized orange peel carbon precursor;

[0040] Put the orange peel carbon precursor in the previous step on a planetary ball mill, add 15g of balls for ball milling, the speed of ball milling is 600rpm, and the time of ball milling is 2h, weigh 3g of potassium hydroxide and mix it with carbon powder, and put it in a tube furnace Calcined at 800°C for 3 hours in an argon protective gas atmosphere to initially obtain activated material powder;

[0041] Finally, the activated material was soaked in 0.2mol / L hydrochloric acid for 24 hours, then neutralized by suction filtration, and dried to obtain a heteroatom-doped porou...

Embodiment 2

[0048] This embodiment provides a heteroatom-doped activated carbon material with a porous structure, which is prepared by the following method.

[0049] Weigh 3g of orange peel, clean it, and put the pieces into a 200ml hydrothermal reaction kettle, add 150ml of water, heat at 180°C for 16 hours, wash and dry after the hydrothermal reaction, and obtain a pre-carbonized orange peel carbon precursor;

[0050] Put the orange peel carbon precursor in the previous step in a planetary ball mill, add 30g of balls for ball milling, the speed of ball milling is 500rpm, and the time of ball milling is 3h, weigh 6g of sodium hydroxide and mix it with carbon powder, and put it in a tube furnace Calcined at 900°C for 5 hours under an argon protective gas atmosphere to initially obtain activated material powder;

[0051] Finally, the activated material was soaked in 0.5 mol / L nitric acid for 18 hours, then neutralized by suction filtration, and dried to obtain activated carbon with a porou...

Embodiment 3

[0054] This embodiment provides a heteroatom-doped activated carbon material with a porous structure, which is prepared by the following method.

[0055] Weigh 3g of orange peel, clean it, and put the pieces into a 200ml hydrothermal reaction kettle, add 150ml of water, heat at 200°C for 13 hours, wash and dry after the hydrothermal reaction, and obtain a pre-carbonized orange peel carbon precursor;

[0056] Put the orange peel carbon precursor in the above step on a planetary ball mill, add 45g of balls for ball milling, the speed of ball milling is 400rpm, and the time of ball milling is 4h, weigh 8g of potassium dihydrogen phosphate and carbon powder, mix them in a tube furnace Calcined at 800°C for 4 hours under argon protective gas atmosphere, and initially obtained activated material powder;

[0057] Finally, the activated material was soaked in 1mol / L hydrofluoric acid for 15 hours, then neutralized by suction filtration, and dried to obtain activated carbon with a poro...

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Abstract

The invention relates to a heteroatom-doped activated carbon material having a porous structure and a preparing method and application thereof. The method includes S1) cleaning and crushing citrus biomass peel, then performing hydrothermal pre-carbonization treatment at 150-200 DEG C, and washing and drying a product to obtain a pre-carbonized carbon precursor; S2) grinding the pre-carbonized carbon precursor, then mixing the pre-carbonized carbon precursor with an activating agent, and calcining the mixture at 800-1200 DEG C for 2-5 h to obtain activated material powder; and S3) soaking and washing the activated material powder with an acid until a product is neutral and drying the product to obtain the heteroatom-doped activated carbon material having a porous structure. The method is simple, easy to operate, and short in time, and the prepared activated carbon material has a layered pore structure and a high specific surface area, and is suitable for sodium ion intercalation and deintercalation, and a high reversible capacity is ensured.

Description

technical field [0001] The invention belongs to new energy material technology, and in particular relates to a heteroatom-doped activated carbon material with a porous structure and a preparation method and application thereof. Background technique [0002] With the development of science and technology and the progress of human civilization, energy plays an increasingly important role in people's lives. At present, lithium-ion secondary batteries that have been commercialized have the advantages of high energy density and good cycle stability. As a green energy storage system, they are gradually replacing traditional lead-acid and nickel-cadmium batteries. However, with the development of large-scale energy storage and electric vehicles, on the one hand, the price of lithium raw materials continues to rise. On the other hand, lithium resources are not evenly distributed around the world, and the reserves are not abundant. As a result, lithium resources cannot fully meet fut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/342C01B32/348C01B32/324
CPCC01B32/324C01B32/342C01B32/348
Inventor 施志聪沐杨昌刘国平陈源茂陈远业
Owner GUANGDONG UNIV OF TECH
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