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Method for preparing porous nitrogen-contained carbon fiber electrode material from melamine resin/polyvinyl alcohol aqueous solution through high-pressure static spinning technology

A high-voltage electrospinning and melamine technology, which is applied in the direction of spinning solution preparation, fiber treatment, electrolytic capacitors, etc., can solve the problems of high cost, complicated operation, and environmental pollution, and achieve low cost, simple operation, and little environmental pollution. Effect

Inactive Publication Date: 2012-11-28
HEILONGJIANG UNIV
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems of unsatisfactory pore-making effect, complicated operation and high cost of the porous nitrogen-containing carbon electrode material prepared by the existing method, and the existing nitrogen-containing carbon fiber adopts the organic solution of polyacrylonitrile as the spinning stock solution environmental pollution problems

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  • Method for preparing porous nitrogen-contained carbon fiber electrode material from melamine resin/polyvinyl alcohol aqueous solution through high-pressure static spinning technology
  • Method for preparing porous nitrogen-contained carbon fiber electrode material from melamine resin/polyvinyl alcohol aqueous solution through high-pressure static spinning technology
  • Method for preparing porous nitrogen-contained carbon fiber electrode material from melamine resin/polyvinyl alcohol aqueous solution through high-pressure static spinning technology

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specific Embodiment approach 1

[0021] Specific embodiment one: the melamine resin / polyvinyl alcohol aqueous solution of the present embodiment prepares the method for porous nitrogen-containing carbon fiber electrode material through high-voltage electrospinning technology, is realized through the following steps:

[0022] 1. Mix the polyvinyl alcohol aqueous solution and the melamine resin aqueous solution at a volume ratio of 1:0.2-5, then add the pore-forming agent to the mixed solution, and stir it evenly with a magnetic stirrer at room temperature to obtain the spinning stock solution; Wherein melamine resin is the abbreviation of melamine resin formaldehyde resin; the mass percentage concentration of polyvinyl alcohol in the polyvinyl alcohol aqueous solution is 10%~30%, the mass percentage concentration of melamine resin in the melamine resin aqueous solution is 30%~50%, pore forming agent It is a water-soluble ammonium salt with a concentration of 0.5% to 7% of the total mass of polyvinyl alcohol and...

specific Embodiment approach 2

[0025] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the volume ratio of polyvinyl alcohol aqueous solution and melamine formaldehyde resin aqueous solution is 1:2 in step one. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0026] Specific embodiment three: what this embodiment is different from specific embodiment one or two is: the mass percentage concentration of polyvinyl alcohol in the polyvinyl alcohol aqueous solution is 20% in the step 1, the mass percentage concentration of melamine formaldehyde resin in the melamine formaldehyde resin aqueous solution 40%. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a method for preparing a porous nitrogen-contained carbon fiber electrode material from a melamine resin / polyvinyl alcohol aqueous solution through a high-pressure static spinning technology, relates to a preparation method of a supercapacitor electrode material, and solves the problems of poor pore-forming effect, complex operation, high cost and heavy pollution of current porous nitrogen-contained carbon fiber electrode material. The preparation method comprises the steps as follows: 1, adding a pore-forming agent into the mixed liquor of the polyvinyl alcohol aqueous solution and the melamine resin aqueous solution to prepare a basic spinning solution; 2, preparing a melamine resin / polyvinyl alcohol composite fiber film through the high-pressure static spinning technology; and 3, carbonizing the composite fiber film prepared in step 2 and foam nickel wrapped with a piece of graphite paper so as to obtain the porous nitrogen-contained carbon fiber electrode material. According to the method, the pore-forming agent is added to the basic spinning solution so that the preparation of the porous nitrogen-contained carbon fiber electrode material and the pore forming can be synchronously accomplished; and the method has the advantages of good pore-forming effect, simplicity in operation, low cost and little pollution and is applied to producing the porous nitrogen-contained carbon fiber electrode material.

Description

technical field [0001] The invention relates to a preparation method of a supercapacitor electrode material. Background technique [0002] Supercapacitors, as a new type of energy storage product that is focused on development today, have become the focus of research and production in various countries. The energy storage mechanism of the electric double layer supercapacitor is to store energy through the interface electric double layer formed between the electrode and the electrolyte. The pore structure and conductivity of the electrode material are one of the important factors affecting the formation of the electric double layer and the capacitance performance. The electrode materials used in electric double layer supercapacitors are mostly carbon materials with high specific surface area, including activated carbon (activated carbon powder, activated carbon fiber), carbon aerogel, and carbon nanotubes. In fact, the specific capacitance of the electric double layer superc...

Claims

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Application Information

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IPC IPC(8): D04H1/4382D04H1/728D01D1/02D01D5/00D01F1/08D06C7/04H01G9/058
Inventor 秦川丽王维杰白续铎党新茹金政
Owner HEILONGJIANG UNIV
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