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A kind of high capacitance carbon fiber electrode material and its preparation method and application

A carbon fiber electrode and carbon material technology, which can be used in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve problems such as the performance impact of electrochemical supercapacitors, achieve good rate performance and cycle stability, improve stability, The effect of high specific capacity

Active Publication Date: 2021-11-02
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lot of work to be done on the use of carbon nanotubes as electrode materials for electrochemical supercapacitors, such as the degree of graphitization of carbon nanotubes, the size of the diameter of carbon nanotubes, the length of carbon nanotubes, and the degree of bending of carbon nanotubes. , and the difference in the grouping of carbon nanotubes brought about by different treatment methods will have a great impact on the performance of the electrochemical supercapacitor composed of it

Method used

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  • A kind of high capacitance carbon fiber electrode material and its preparation method and application
  • A kind of high capacitance carbon fiber electrode material and its preparation method and application
  • A kind of high capacitance carbon fiber electrode material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] High-capacity nitrogen-doped conductive fibrous carbon material, sample synthesis:

[0036] Weigh the aramid fiber 1414; put it into a tube furnace to carry out pre-sintering, nitriding treatment (heat treatment) and carbonization treatment in sequence. First set the sintering temperature curve in an argon-protected furnace to increase the temperature from room temperature to 500° C. and keep the temperature for 2 hours. and then transferred to the NH 3 In a protected furnace, set the sintering temperature profile to heat treatment at 500-800° C. for 3 hours. Finally, the sintering temperature curve was set to be kept at 800° C. for 9 hours in an argon-protected furnace, and then cooled to room temperature in an argon atmosphere for 5 hours. According to the curve set above, the heating, constant temperature, and cooling processes are carried out to prepare a high-capacity nitrogen-doped conductive fiber carbon material.

[0037] The preparation of supercapacitor: be...

Embodiment 2

[0043] High-capacity nitrogen-doped conductive fibrous carbon material, sample synthesis:

[0044] Weigh the polyester; put it into a tube furnace to carry out pre-sintering, nitriding treatment (heat treatment) and carbonization treatment in sequence. First set the sintering temperature curve in an argon-protected furnace to increase the temperature from room temperature to 600° C. and keep the temperature for 4 hours. then transfer to NH 3 In the protected furnace, the sintering temperature curve was set to raise the temperature to 600-800° C. and keep the temperature for 3 hours. Finally, the sintering temperature curve was set to 800° C. for 9 hours in an argon-protected furnace, and the temperature was lowered to room temperature in an argon atmosphere for 5 hours. According to the curve set above, the heating, constant temperature, and cooling processes are carried out to prepare a high-capacity nitrogen-doped conductive fiber carbon material. The carbon electrode sup...

Embodiment 3

[0046] High-capacity nitrogen-doped conductive fiber carbon material, sample synthesis;

[0047] Weigh the vinylon; put it into a tube furnace to carry out pre-sintering, nitriding treatment (heat treatment) and carbonization treatment in sequence. First set the sintering temperature curve in an argon-protected furnace to increase the temperature from room temperature to 500° C. and keep the temperature for 2 hours. then in NH 3 The temperature was raised to 500-800° C. in a protected furnace and kept for 3 hours. Finally, it was transferred to a furnace protected by argon at a sintering temperature of 900° C. for 9 hours, and cooled to room temperature after 5 hours in an argon atmosphere. According to the curve set above, the heating, constant temperature, and cooling processes are carried out to prepare a high-capacity nitrogen-doped conductive fiber carbon material. The carbon electrode supercapacitor was prepared by using the obtained high-capacity nitrogen-doped condu...

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Abstract

The invention relates to a high-capacity carbon fiber electrode material and its preparation method and application. The carbon fiber electrode material is a nitrogen-doped conductive fiber carbon material. The preparation method includes: placing the organic fiber in a protective atmosphere, first Pre-sintering at 300-800°C, heat treatment at 500-800°C in an ammonia atmosphere, and finally carbonization treatment at 900-1200°C in a protective atmosphere and cooling down to room temperature to obtain the nitrogen-doped Conductive fiber carbon material; the organic fiber is at least one of polyacrylonitrile-based fiber, viscose fiber, pitch fiber, preferably spandex, polyester, vinylon, aramid fiber, polybenzimidazole PBI fiber, polyimide At least one of PI fibers.

Description

technical field [0001] The invention relates to a supercapacitor pseudocapacitive electrode material and its preparation method and application, in particular to a high-capacity carbon fiber electrode material and its preparation method and application, and belongs to the technical field of supercapacitor pseudocapacitive electrode materials. Background technique [0002] Some industrial processes (e.g. semiconductor, chemical, pharmaceutical, paper, textile industries) are very sensitive to short interruptions and disturbances in the power supply and cause costly production losses. UPS (Uninterruptible Power System) installations from seconds to minutes can protect these sensitive loads. Ultracapacitors can provide a better energy-to-power ratio for these applications and reduce the size and cost of such systems, making them more reliable. A wide variety of actuators are used in both military and space applications such as displacement control in submarine systems, launchi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/40H01G11/86
CPCH01G11/24H01G11/30H01G11/40H01G11/86Y02E60/13
Inventor 黄富强韩振毕辉居亚兰马文勤
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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