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A preparation method of ultra-thin-walled multi-level porous carbon/polyaniline supercapacitor electrode material

A technology of supercapacitor and porous carbon, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of affecting the electrochemical performance of porous carbon, low utilization rate of internal holes, poor conductivity, etc. Friendly, improve the agglomeration phenomenon, improve the effect of specific capacitance

Inactive Publication Date: 2019-08-09
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two problems in the use of traditional porous carbon materials: one is the low utilization rate of internal pores due to the compact structure, and the other is the large internal resistance caused by poor electrical conductivity, which greatly affects the electrical conductivity of porous carbon. chemical properties

Method used

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  • A preparation method of ultra-thin-walled multi-level porous carbon/polyaniline supercapacitor electrode material
  • A preparation method of ultra-thin-walled multi-level porous carbon/polyaniline supercapacitor electrode material
  • A preparation method of ultra-thin-walled multi-level porous carbon/polyaniline supercapacitor electrode material

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Embodiment 1

[0031] A preparation method of an ultra-thin-walled multi-level porous carbon / polyaniline composite, comprising the steps of:

[0032] 1) Preparation of ultra-thin-walled hierarchical porous carbon

[0033] The coal tar pitch and aluminum sulfate are weighed and mixed according to the mass ratio of 1:3, and then styrene is added, and the mass ratio of the mixture to styrene is 9:1. The two were mixed uniformly by mechanical stirring, and nitrogen gas was introduced, the stirring temperature was 150° C., and the stirring time was 2 h. After stirring evenly, the solvent was distilled off under reduced pressure and placed in a vacuum oven (1.0×10 -1 Pa) Dry for 8h and cool to room temperature. The dried samples were placed in an atmosphere furnace, fed with nitrogen, heated to 700°C at a rate of 10°C / min, kept for 4 hours, cooled to room temperature and taken out for later use.

[0034] 2) Preparation of ultra-thin-walled hierarchical porous carbon / polyaniline composites

[0...

Embodiment 2

[0038] A preparation method of an ultra-thin-walled multi-level porous carbon / polyaniline composite, comprising the steps of:

[0039] 1) Preparation of ultra-thin-walled hierarchical porous carbon

[0040] The petroleum pitch and aluminum carbonate were weighed and mixed according to the mass ratio of 1:1.5, and then styrene was added, and the mass ratio of the mixture to styrene was 7:3. The two were mixed uniformly by mechanical stirring, and nitrogen gas was introduced, the stirring temperature was 120° C., and the stirring time was 2 h. After stirring evenly, the solvent was distilled off under reduced pressure and placed in a vacuum oven (1.0×10 -1 Pa) Dry for 8h and cool to room temperature. The dried samples were placed in an atmosphere furnace, fed with nitrogen, heated to 1000°C at a rate of 10°C / min, kept for 2 hours, cooled to room temperature and taken out for use.

[0041] 2) Preparation of ultra-thin-walled hierarchical porous carbon / polyaniline composites

[...

Embodiment 3

[0045] A preparation method of an ultra-thin-walled multi-level porous carbon / polyaniline composite, comprising the steps of:

[0046] 1) Preparation of ultra-thin-walled hierarchical porous carbon

[0047] The mesophase pitch and aluminum isopropoxide were weighed and mixed according to the mass ratio of 1:2, and then styrene was added, and the mass ratio of the mixture to styrene was 1:1. The two were mixed uniformly by mechanical stirring, and nitrogen gas was introduced, the stirring temperature was 150° C., and the stirring time was 2 h. After stirring evenly, the solvent was distilled off under reduced pressure and placed in a vacuum oven (1.0×10 -1 Pa) Dry for 8h and cool to room temperature. The dried samples were placed in an atmosphere furnace, fed with nitrogen, heated to 800°C at a rate of 10°C / min, kept for 3 hours, cooled to room temperature and taken out for later use.

[0048] 2) Preparation of ultra-thin-walled hierarchical porous carbon / polyaniline composi...

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Abstract

The invention discloses a preparation method of an ultrathin-walled multi-stage porous carbon / polyaniline super capacitor electrode material. The method comprises, using bitumen and additives as raw materials, mixing the bitumen and the additives with a certain amount of styrene, and placing a resultant object in an atmosphere furnace to be carbonized so as to obtain ultrathin-walled multi-stage porous carbon; adding the ultrathin-walled multi-stage porous carbon to an ethanol / acid solution for ultrasonic dispersion, then adding an aniline monomer and continuously performing ultrasonic dispersion uniformly, then placing a resultant object in a constant-low-temperature reaction bath, adding an ammonium persulfate solution, and then obtaining the ultrathin-walled multi-stage porous carbon / polyaniline compound by water washing, alcohol washing, and drying. The method is simple in process, low in cost, easy to industrially produce, utilizes the different energy storage mechanisms of the polyaniline and multi-stage porous carbon, fully exerts the synergistic effect of the polyaniline and multi-stage porous carbon, synthesizes a super capacitor with good electrochemical performance, andhas a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of inorganic-organic composite materials, and mainly relates to an ultra-thin-wall multi-stage porous carbon / polyaniline supercapacitor electrode material and a preparation method thereof. Background technique [0002] In recent years, due to the rise of digital communication equipment, new energy vehicles, solar battery energy storage and other equipment, higher requirements have been put forward for high-performance memory. The supercapacitor, as a new type of energy storage device between the battery and the ordinary capacitor, has the characteristics of both. Compared with the traditional capacitor, it not only has a higher order of magnitude of capacitance, but also has high energy, high power, and fast charging. characteristics such as discharge and cycle stability. These excellent properties make supercapacitors have broad application prospects in aerospace, electronic technology, pulse laser technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/44H01G11/24H01G11/30H01G11/34H01G11/48H01G11/86
CPCY02E60/13
Inventor 林起浪张夏兰
Owner FUZHOU UNIV
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