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High-capacitance carbon fiber electrode material as well as preparation method and application thereof

A technology of carbon fiber electrodes and carbon materials, applied in supercapacitor pseudocapacitive electrode materials and their preparation, high capacitance carbon fiber electrode materials and their preparation fields, can solve problems such as the performance impact of electrochemical supercapacitors, and achieve large-scale production , The preparation process is simple, and the effect of increasing the specific capacity

Active Publication Date: 2020-10-30
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • 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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  • High-capacitance carbon fiber electrode material as well as preparation method and application thereof
  • High-capacitance carbon fiber electrode material as well as preparation method and application thereof
  • High-capacitance carbon fiber electrode material as well as preparation method and application thereof

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-capacitance carbon fiber electrode material as well as a preparation method and application thereof. The carbon fiber electrode material is a nitrogen-doped conductivefiber carbon material. The preparation method comprises the steps of placing organic fibers in a protective atmosphere, presintering at the temperature of 300-800 DEG C, then placing in an ammonia atmosphere, carrying out heat treatment at the temperature of 500-800 DEG C, finally carbonizing in the protective atmosphere at the temperature of 900-1200 DEG C, and cooling to room temperature to obtain the nitrogen-doped conductive fiber carbon material. The organic fibers are at least one of polyacrylonitrile-based fibers, viscose fibers and asphalt fibers, preferably at least one of spandex, polyester, vinylon, aramid fibers, polybenzimidazole PBI fibers and polyimide 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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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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