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Preparation method and application of nitrogen-doped hollow carbon nanowire grafted polypyrrole

A carbon nanowire, nitrogen doping technology, applied in the fields of carbon fiber, textile and papermaking, fiber processing, etc., can solve the problem of no related reports on composite, and achieve the effect of light weight, stable process and easy operation.

Active Publication Date: 2021-09-03
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

However, there is no relevant report on the compounding of the two in the form of covalent bonds.

Method used

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  • Preparation method and application of nitrogen-doped hollow carbon nanowire grafted polypyrrole
  • Preparation method and application of nitrogen-doped hollow carbon nanowire grafted polypyrrole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1)SiO2 2 Nanowires

[0039] Add 6 g of tetraethyl orthosilicate into a mixed solvent of 5 g of ethanol and 0.7 g of distilled water, and stir magnetically for 3 h at room temperature. Add 0.04g acetic acid to the above solution and continue stirring for 5h to hydrolyze tetraethyl orthosilicate to obtain SiO 2 Sol. Take 0.4g of cellulose acetate, add 8g of N,N-dimethylformamide (DMF) and 3g of 1,4-dioxane (DO) in a mixed solvent, dissolve with magnetic stirring at 50°C, add 2g of SiO 2 sol, and continue to stir at room temperature for 5 h to obtain a quenching solution.

[0040] Put the quenching solution in a -25°C refrigerator and quench for 200 minutes. After quenching, quickly take out the solution, add 500mL distilled water for extraction, remove the solvent N,N-dimethylformamide, 1,4-dioxane and ethanol, change the water every 6h, and change the water 5 times in a row . The sample was freeze-dried for 24 hours to obtain cellulose acetate / SiO 2 composite nano...

Embodiment 2

[0051] 1)SiO2 2 Nanowires

[0052] Add 5 g of tetraethyl orthosilicate into a mixed solvent of 6 g of ethanol and 0.6 g of distilled water, and stir magnetically for 3 h at room temperature. Add 0.04g acetic acid to the above solution and continue stirring for 5h to hydrolyze tetraethyl orthosilicate to obtain SiO 2 Sol. Take 0.5g of cellulose acetate, add 7g of N,N-dimethylformamide (DMF) and 4g of 1,4-dioxane (DO) in a mixed solvent, dissolve with magnetic stirring at 50°C, add 2.3g of SiO 2 sol, and continue to stir at room temperature for 5 h to obtain a quenching solution.

[0053] Put the quenching solution in a -30°C refrigerator and quench for 250 minutes. After quenching, quickly take out the solution, add 500mL distilled water for extraction, remove the solvent N,N-dimethylformamide, 1,4-dioxane and ethanol, change the water every 6h, and change the water 5 times in a row . The sample was freeze-dried for 24 hours to obtain cellulose acetate / SiO 2 composite na...

Embodiment 3

[0064] 1)SiO2 2 Nanowires

[0065]Add 7 g of tetraethyl orthosilicate into a mixed solvent of 8 g of ethanol and 0.7 g of distilled water, and stir magnetically for 3 h at room temperature. Add 0.05g acetic acid to the above solution and continue stirring for 5h to hydrolyze tetraethyl orthosilicate to obtain SiO 2 Sol. Take 0.34g of cellulose acetate and add 10g of N,N-dimethylformamide (DMF) and 3g of 1,4-dioxane (DO) in a mixed solvent, dissolve with magnetic stirring at 50°C, add 2.2g of SiO 2 sol, and continue to stir at room temperature for 5 h to obtain a quenching solution.

[0066] Put the quenching solution in a -20°C refrigerator and quench for 220 minutes. After quenching, quickly take out the solution, add 500mL distilled water for extraction, remove the solvent N,N-dimethylformamide, 1,4-dioxane and ethanol, change the water every 6h, and change the water 5 times in a row . The sample was freeze-dried for 24 hours to obtain cellulose acetate / SiO 2 composit...

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Abstract

The invention relates to a preparation method and application of nitrogen-doped hollow carbon nanowire grafted polypyrrole. The invention provides a preparation method of a novel carbon-based electrode material. The preparation method comprises the following steps of 1, preparing an SiO2 nanowire; 2, preparing a nitrogen-doped carbon hollow nanowire; 3, modifying the nitrogen-doped carbon hollow nanowire with azobenzene; and 4, preparing a nitrogen-doped carbon hollow nanowire grafted polypyrrole electrode material. The electrochemical performance of the electrode material is tested, the specific capacitance is 301 F / g under the condition that the current density is 1 A / g, and the specific capacitance is 78.1% of the initial value after the electrode material is recycled for 800 times. The preparation method has the characteristics of stable process, easiness in operation, reliable quality, low cost, light weight, no pollution and the like, and has a good commercial prospect.

Description

technical field [0001] The invention relates to a preparation method and application of nitrogen-doped hollow carbon nanowire grafted polypyrrole, belonging to the fields of carbon materials and electrochemistry. Background technique [0002] As a new type of energy storage device, supercapacitors have high power density (up to 10 2 ~10 4 W / kg), long cycle life (500,000 to 1,000,000 times), wide operating temperature range (-40 to 80°C), high energy density, green environmental protection, etc., have been widely used in transportation, power equipment, industry and machinery and other fields . The performance of a supercapacitor largely depends on the selection of its electrodes. Therefore, the study of electrode materials has become the focus of supercapacitor research. The energy storage mechanism of supercapacitors can be divided into two categories: electric double layer capacitors and pseudocapacitors. Electric double layer capacitors are realized by reversible ads...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/37D06M11/55D06M11/65D06M13/322D06M11/52H01G11/24H01G11/36D06M101/40
CPCD06M15/37D06M11/55D06M11/65D06M13/322D06M11/52H01G11/24H01G11/36D06M2101/40Y02E60/13
Inventor 刘瑞来林渊智胡家朋赵瑨云张玉斌林志毅穆寄林付兴平
Owner 晋江瑞碧科技有限公司
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