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Preparation method and application of nitrogen-doped porous activated carbon/mns composite nanofiber

A composite nanofiber and nanofiber technology, applied in the direction of hybrid capacitor electrodes, etc., can solve problems such as difficult mass industrial production, and achieve the effects of low equipment dependence, good conductivity, and easy operation.

Active Publication Date: 2020-08-21
晋江瑞碧科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the electrospinning technology is simple, it is difficult to produce in large quantities

Method used

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  • Preparation method and application of nitrogen-doped porous activated carbon/mns composite nanofiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1) Preparation of cellulose porous nanofibers

[0045] S1: Dissolve 2.0g of cellulose triacetate (TCA) in a ternary mixed solvent of 48.7g of N,N-dimethylformamide, 24.4g of 1,4-dioxane, and 24.4g of tetrahydrofuran under magnetic force at 50°C Stir for 5h to dissolve and form solution A. Add 0.5 g of tetraethyl orthosilicate dropwise into solution A, and continue stirring for 2 h to obtain precursor quenching solution B.

[0046] S2: After quenching the precursor solution B obtained in step S1 at -10°C in a low-temperature refrigerator for 5 hours, remove N,N-dimethylformamide, 1,4-dioxane and tetrahydrofuran solvents, wash and dry Get TCA / SiO 2 composite nanofibers.

[0047] S3: TCA / SiO 2 Soak the composite nanofibers in 100mL 0.1mol / L NaOH ethanol solution for 24h, convert TCA into cellulose, wash with distilled water 3 times, and dry to obtain cellulose / SiO 2 composite nanofibers.

[0048] S4: Cellulose / SiO 2 The composite nanofibers were soaked in 100 mL of ...

Embodiment 2

[0057] 1) Preparation of cellulose porous nanofibers

[0058] S1: Dissolve 3.0g cellulose triacetate (TCA) in a ternary mixed solvent of 48.1g N,N-dimethylformamide, 24.1g 1,4-dioxane, and 24.1g tetrahydrofuran, and magnetically Stir for 5h to dissolve and form solution A. Add 0.7 g of tetraethyl orthosilicate dropwise into solution A, and continue stirring for 2 h to obtain precursor quenching solution B.

[0059] S2: After quenching the precursor solution B obtained in step S1 at -20°C for 5 hours in a low-temperature refrigerator, remove N,N-dimethylformamide, 1,4-dioxane and tetrahydrofuran solvents, wash and dry Get TCA / SiO 2 composite nanofibers.

[0060] S3: TCA / SiO 2 Soak the composite nanofibers in 100mL 0.1mol / L NaOH ethanol solution for 24h, convert TCA into cellulose, wash with distilled water 3 times, and dry to obtain cellulose / SiO 2 composite nanofibers.

[0061] S4: Cellulose / SiO 2 The composite nanofibers were soaked in 100 mL of 40% hydrofluoric acid s...

Embodiment 3

[0070] 1) Preparation of cellulose porous nanofibers

[0071] S1: Dissolve 3.0g of cellulose triacetate (TCA) in a ternary mixed solvent of 42.8g of N,N-dimethylformamide, 32.1g of 1,4-dioxane, and 21.4g of tetrahydrofuran under magnetic force at 50°C Stir for 5h to dissolve and form solution A. Add 0.7 g of tetraethyl orthosilicate dropwise into solution A, and continue stirring for 2 h to obtain precursor quenching solution B.

[0072] S2: After quenching the precursor solution B obtained in step S1 at -20°C for 5 hours in a low-temperature refrigerator, remove N,N-dimethylformamide, 1,4-dioxane and tetrahydrofuran solvents, wash and dry Get TCA / SiO 2 composite nanofibers.

[0073] S3: TCA / SiO 2 Soak the composite nanofibers in 100mL 0.1mol / L NaOH ethanol solution for 24h, convert TCA into cellulose, wash with distilled water 3 times, and dry to obtain cellulose / SiO 2 composite nanofibers.

[0074] S4: Cellulose / SiO 2 The composite nanofibers were soaked in 100 mL of ...

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Abstract

The invention provides a preparation method of nitrogen doped porous activated carbon / MnS composite nanometer fiber. The preparation method comprises the following steps: S1, preparing cellulose porous nanometer fiber; S2, preparing polyaniline / cellulose composite nanometer fiber; S3, preparing nitrogen doped porous activated carbon nanometer fiber; S4, preparing nitrogen doped porous activated carbon / MnS composite nanometer fiber. The preparation method has the following beneficial effects: the diameter of the nitrogen doped porous activated carbon / MnS composite nanometer fiber is 150 to 280nm, the hole diameter is 0.4 to 1.2 nm, the nitrogen doped porous activated carbon / MnS composite nanometer fiber belongs to a microporous structure, and the specific surface area is greatly increased.The nitrogen doped porous activated carbon / MnS composite nanometer fiber has the characteristics of stable preparation process, easiness in operation, low equipment dependence, no pollution and the like, is suitable for industrial large-scale production and is expected to be an ideal supercapacitor electrode material.

Description

technical field [0001] The invention relates to a preparation method of nitrogen-doped porous activated carbon / MnS composite nanofibers, belonging to the field of composite nanomaterials and electrochemical materials. Background technique [0002] With the deterioration of the environment and the rapid consumption of energy. The rapid depletion of non-renewable resources represented by coal and oil, energy shortage and environmental pollution have become severe challenges that mankind needs to face. The development of new renewable energy has become a hot spot in scientific research today. Supercapacitors have both the advantages of batteries and traditional capacitors, and have the advantages of high power density, long cycle life, wide operating temperature limit, high energy density, fast charge and discharge rate, high efficiency, maintenance-free, green and other advantages. It is used in national defense equipment, communication components, new energy vehicles and ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/02C08K7/06C08K3/30C08G73/02H01G11/24H01G11/30H01G11/44H01G11/34
CPCC08G73/0266C08K3/30C08K7/06C08K2003/3009C08K2201/011H01G11/24H01G11/30H01G11/34H01G11/44C08L79/02Y02E60/13
Inventor 林皓胡家朋吴芳芳徐婕
Owner 晋江瑞碧科技有限公司