Preparation method of porous nitrogen-rich carbon fiber electrode

A carbon fiber electrode and carbon fiber technology, which is applied in the chemical characteristics of fibers, hybrid capacitor electrodes, and hybrid/electric double layer capacitor manufacturing, etc. Superior electrochemical performance, rich nitrogen content, and small nitrogen loss

Active Publication Date: 2016-07-13
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the disadvantages of the porous nitrogen-containing carbon electrode material prepared by the existing method, such as complex and cumbersome production process, nitrogen doping and pore-making need

Method used

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  • Preparation method of porous nitrogen-rich carbon fiber electrode
  • Preparation method of porous nitrogen-rich carbon fiber electrode
  • Preparation method of porous nitrogen-rich carbon fiber electrode

Examples

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Effect test

Embodiment 1

[0032] 1. Preparation of spinning solution: Add 2 g of polyacrylonitrile into 18 g of N,N-dimethylformamide, dissolve and add 0.5 g of melamine resin and 0.5 g of polyethylene glycol to dissolve to obtain spinning solution.

[0033] 2. Preparation of PEG / MF / PAN composite fiber: high-voltage electrospinning technology was used for spinning, wherein the spinning voltage was 20kV, the injection speed was 0.3mm / min, the receiving distance was 17cm, the spinning temperature was 40°C, and the humidity was 30%.

[0034] 3. Pre-oxidation: Put the PEG / MF / PAN composite fiber in the air atmosphere, raise the temperature to 250°C at a heating rate of 5°C / min, keep it for 2 hours, and then lower it to room temperature at a cooling rate of 5°C / min.

[0035] 4. Carbonization: Place the pre-oxidized PEG / MF / PAN composite fiber in a nitrogen or argon atmosphere, raise the temperature to 800°C at a rate of 5°C / min, keep it warm for 2 hours, and then cool it down at a rate of 5°C / min Speed ​​dow...

Embodiment 2

[0038] 1. Preparation of spinning solution: add 2g of polyacrylonitrile to 20g of N,N-dimethylformamide, dissolve and add 1g of melamine resin and 0.5g of polyethylene glycol to dissolve to obtain spinning solution.

[0039] 2. Preparation of PEG / MF / PAN composite fiber: high-voltage electrospinning technology was used for spinning, wherein the spinning voltage was 17kV, the injection speed was 0.1mm / min, the receiving distance was 20cm, the spinning temperature was 40°C, and the humidity was 30%.

[0040] 3. Pre-oxidation: Put the PEG / MF / PAN composite fiber in the air atmosphere, raise the temperature to 250°C at a heating rate of 5°C / min, keep it for 2 hours, and then lower it to room temperature at a cooling rate of 5°C / min.

[0041] 4. Carbonization: Place the pre-oxidized PEG / MF / PAN composite fiber in a nitrogen or argon atmosphere, raise the temperature to 800°C at a rate of 3°C / min, keep it warm for 2 hours, and then cool it down at a rate of 3°C / min Speed ​​down to nor...

Embodiment 3

[0044] 1. Preparation of spinning solution: 2 g of polyacrylonitrile was added to 18 g of N,N-dimethylformamide, and after dissolving, 1.5 g of melamine resin and 1.0 g of polyethylene glycol were added to dissolve to obtain spinning solution.

[0045] 2. Preparation of PEG / MF / PAN composite fiber: high-voltage electrospinning technology is used for spinning, wherein the spinning voltage is 20kV, the injection speed is 0.7mm / min, the receiving distance is 20cm, the spinning temperature is 20°C, and the humidity is 30%.

[0046]3. Pre-oxidation: Put the PEG / MF / PAN composite fiber in the air atmosphere, raise the temperature to 250°C at a heating rate of 3°C / min, keep it for 2 hours, and then lower it to room temperature at a cooling rate of 3°C / min.

[0047] 4. Carbonization: Place the pre-oxidized PEG / MF / PAN composite fiber in a nitrogen or argon atmosphere, raise the temperature to 800°C at a rate of 1°C / min, keep it warm for 2 hours, and then cool it down at a rate of 2°C / min...

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Abstract

The invention provides a preparation method of a porous nitrogen-rich carbon fiber electrode and relates to the field of production technologies of functional materials.Polyacrylonitrile is dissolved in N,N-dimethyl formamide, then melamine resin is added to serve as a nitrogen source, and polyethylene glycol serves as a pore-forming agent to prepare a spinning solution; a PEG/MF/PAN composite precursor fiber is produced through electrostatic spinning; the PEG/MF/PAN composite precursor fiber is subjected to preoxidation, carbonization and other heat treatment to obtain a porous nitrogen-rich carbon fiber (NACF); the NACF is made into the super-capacitor electrode, and the problem that existing carbon fiber nitrogen doping and pore forming need to be performed step by step, the specific surface area and the nitrogen content cannot be considered, a production process is complicated, the cost is higher and the like is solved.

Description

technical field [0001] The invention relates to the technical field of production of functionalized materials, in particular to a preparation process of a supercapacitor electrode material. technical background [0002] Supercapacitor is a new type of energy storage device between traditional capacitors and batteries, which has the advantages of large capacitance, long cycle life, fast charge and discharge time, high power density and low maintenance cost. With the development of society, as a new type of energy storage, supercapacitors have attracted more and more attention from researchers due to their superior performance, and have broad application prospects in new energy vehicles, defense and aerospace, sensors and other fields. Electrode materials are the core part of supercapacitors and the key to determining the performance of supercapacitors. Therefore, the preparation of high-performance electrode materials is the focus of supercapacitor research. [0003] Carbon ...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/40H01G11/38D01F9/22D01F9/24
CPCY02E60/13H01G11/86D01F9/22D01F9/24H01G11/38H01G11/40
Inventor 贾哲华董斌赵有华贾成浩陶翠徐继任
Owner YANGZHOU UNIV
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