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A kind of preparation method of hierarchical porous structure carbon material

A technology of multi-level pores and carbon materials, applied in the field of materials, can solve problems such as large environmental hazards

Active Publication Date: 2019-01-11
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in these methods, post-treatment of template removal is necessary, and toxic or corrosive reagents, such as NaOH, HF, etc. are generally used to remove templates to create holes, which is more harmful to the environment.

Method used

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  • A kind of preparation method of hierarchical porous structure carbon material
  • A kind of preparation method of hierarchical porous structure carbon material
  • A kind of preparation method of hierarchical porous structure carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 7g SnCl 4 ·H 2 O, 33g of glucose and 6.1g of thiourea were dissolved in 500mL of distilled water and stirred sufficiently at room temperature to obtain a clear solution; the mixed solution was transferred to a traditional high temperature and high pressure hydrothermal reactor and reacted at 200°C for 6 hours to obtain a SnS / carbon composite Materials: The precipitate obtained from the hydrothermal reaction was separated, washed with water for several times, and dried, and the obtained sample was earthy brown. The obtained SnS / carbon composite was calcined in a nitrogen atmosphere at a high temperature of 800 degrees for 4 hours to obtain a sulfur-doped carbon material with a hierarchical porous structure, and the sample was black. The elemental analysis test of the product shows that the sulfur element content in the sample is 2.3% (mass percentage), and the specific surface area test shows that the sample contains macropores, mesopores and micropores.

[0030] The o...

Embodiment 2

[0032] 7g SnCl 4 ·H 2 0. 33g of glucose and 6.1g of thiourea were dissolved in 500mL of distilled water and fully stirred at room temperature to obtain a clear solution; the mixed solution was transferred to a microwave hydrothermal reactor and reacted at 200°C for 40 minutes to obtain a SnS / carbon composite material; The precipitate obtained from the microwave hydrothermal reaction was separated, washed with water for several times, and dried, and the obtained sample was earthy brown. The obtained SnS / carbon composite was calcined in a nitrogen atmosphere at a high temperature of 800 degrees for 4 hours to obtain a sulfur-doped carbon material with a hierarchical porous structure, and the sample was black. The elemental analysis test of the product shows that the sulfur element content in the sample is 2.1% (mass percentage), and the specific surface area test shows that the sample contains macropores, mesopores and micropores.

[0033] The obtained sulfur-doped carbon mate...

Embodiment 3

[0035] 9.2g SnCl 2 2H 2 O, 33g of glucose and 6.1g of thiourea were dissolved in 500mL of distilled water and stirred sufficiently at room temperature to obtain a clear solution; the mixed solution was transferred to a traditional high temperature and high pressure hydrothermal reactor and reacted at 180°C for 10 hours to obtain a SnS / carbon composite Materials: The precipitate obtained from the hydrothermal reaction was separated, washed with water for several times, and dried, and the obtained sample was earthy brown. The obtained SnS / carbon composite was calcined in a nitrogen atmosphere at a high temperature of 800 degrees for 6 hours to obtain a sulfur-doped carbon material with a hierarchical porous structure, and the sample was black. The elemental analysis test of the product shows that the sulfur element content in the sample is 1.9% (mass percentage), and the specific surface area test shows that the sample contains macropores, mesopores and micropores.

[0036] Th...

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Abstract

The invention belongs to the technical field of materials, and discloses a method for preparing a multistage porous carbon material. The method includes the steps of dissolving tin salt, carbohydrate compound and organic sulfur compound to obtain a clear mixed solution, conducting hydrothermally reaction to obtain SnS / C composite material precipitate, calcinating at a high temperature after washing and drying to obtain a sulfur-doped multistage porous carbon material. The porous carbon structure improves the sufficient wettability between the material and an electrolyte and ensures excellent charge conduction. Trace sulfur elements play a role in improving the charge-adsorption capacity in the porous carbon structure, and the synergetic effect of the two effectively improves the specific capacitance of the material, multiplying power performance and cycling performance.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a porous carbon material for a supercapacitor and a preparation method thereof. Background technique [0002] With the increasing demand for power vehicles and new energy sources, the research and development of high-performance chemical power storage materials is imminent. Supercapacitors have the advantages of high specific capacitance, strong high-current discharge capability and good safety, and have become one of the hot spots in the research and development of new chemical power sources. Among them, carbon-based materials have aroused widespread interest among researchers in the study of supercapacitor electrode materials due to their advantages such as high specific surface area, excellent electronic conductivity, low cost and easy availability, and stable physical and chemical properties. [0003] Pure carbon materials have the characteristics of electric d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/34H01G11/86
CPCY02E60/13
Inventor 杨刚季红梅
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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