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A helical carbon nanofiber/TiO2 composite material and application thereof

A nano-carbon fiber and composite material technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of low energy density, small specific surface area of ​​electrode materials, poor interface bonding force of composite electrodes, etc., to increase specific surface area, improve effective contact area, improve The effect of binding capacity

Active Publication Date: 2018-12-28
ZIGONG DONGXIN CARBON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to study supercapacitor electrode materials, and specifically provide a spiral nano-carbon fiber / TiO 2 Composite materials, to solve the problem of low energy density caused by the small specific surface area of ​​electrode materials and poor interfacial bonding force of composite electrodes in existing supercapacitors

Method used

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  • A helical carbon nanofiber/TiO2 composite material and application thereof
  • A helical carbon nanofiber/TiO2 composite material and application thereof
  • A helical carbon nanofiber/TiO2 composite material and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] 1) Weigh 0.2 g of copper tartrate trihydrate and place it in a quartz boat, spread it evenly, place it in the heating tube of the device, then pass in argon gas to remove the air in the tube, and heat up to 480 °C at 5 °C / min , and then feed acetylene at a flow rate of 80 ml / min, and keep warm for 2 hours. After the reaction is finished, turn off the acetylene, pass through the argon gas protection, cool down to room temperature with the furnace, take out the sample, and obtain the helical carbon nanofiber.

[0037] 2) Take 3 g of helical carbon nanofibers (HCNFs) prepared in step 1) and add them to a concentrated nitric acid solution with a mass fraction of 68%, in a water-bath ultrasonic instrument, 40KHz ultrasonic treatment for 2 hours, then add a large amount of distilled water, and then pass through the sand core The funnel was filtered and washed repeatedly with ethanol solution until the supernatant was neutral (pH=7). Finally, the product was vacuum-dried in an...

Embodiment 2

[0041] 1) Weigh 0.2 g of copper tartrate trihydrate and place it in a quartz boat, spread it evenly, place it in the heating tube of the device, then pass in argon gas to remove the air in the tube, and heat up to 480 °C at 5 °C / min , turn off the argon, and then pass through acetylene at a flow rate of 100ml / min, and keep warm for 2h. After the reaction was over, the acetylene was turned off, argon was introduced, and the furnace was cooled to room temperature, and the samples were taken out to obtain helical carbon nanofibers (HCNFs).

[0042] 2) Take 3 g of helical carbon nanofibers (HCNFs) prepared in step 1) and add them to a concentrated nitric acid solution with a mass fraction of 68%, in a water-bath ultrasonic instrument, 40KHz ultrasonic treatment for 2 hours, then add a large amount of distilled water, and then pass through the sand core The funnel was filtered and washed repeatedly with ethanol solution until the supernatant was neutral (pH=7). Finally, the product...

Embodiment 3

[0046] 1) Weigh 0.2 g of copper tartrate trihydrate and place it in a quartz boat, spread it evenly, place it in the heating tube of the device, then pass in argon gas to remove the air in the tube, and heat up to 480 °C at 5 °C / min , turn off the argon, and then pass through acetylene at a flow rate of 100ml / min, and keep warm for 2h. After the reaction is finished, turn off the acetylene, pass through the argon gas protection, cool down to room temperature with the furnace, take out the sample, and obtain the helical carbon nanofiber.

[0047] 2) Take 3 g of helical carbon nanofibers (HCNFs) prepared in step 1) and add them to a concentrated nitric acid solution with a mass fraction of 68%, in a water-bath ultrasonic instrument, 40KHz ultrasonic treatment for 2 hours, then add a large amount of distilled water, and then pass through the sand core The funnel was filtered and washed repeatedly with ethanol solution until the supernatant was neutral (pH=7). Finally, the product...

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Abstract

The invention discloses a helical carbon nanofiber / TiO2 composite material and application thereof, wherein the helical nanometer carbon fiber is modified by a liquid phase oxidation method to activate the helical nanometer carbon fiber, and then the helical nanometer carbon fiber loaded titanium dioxide composite electrode material is obtained by a hydrothermal method. The activated helical carbon nanofibers remove impurities such as amorphous carbon on the surface of the helical carbon nanofibers. The interstitial volume and specific surface area of the composites are increased, and the surface active groups are also increased, which enhance the loading capacity and adhesion of TiO2. The dispersion of the composites is better, the aggregation is less, and the original helical structure of HCNFs is not destroyed, which facilitated the storage and transfer of electrons. The helical carbon nanofiber / TiO2 composite material prepared by the invention has large specific surface area, goodspecific capacity, cycle performance and safety performance, and has good application prospect in the field of supercapacitor materials. The helical carbon nanofiber / TiO2 composite material has good specific capacity, cycle performance and safety performance, and has good application prospect in the field of supercapacitor materials.

Description

technical field [0001] The invention relates to supercapacitor electrode materials, in particular to a spiral nano-carbon fiber / TiO 2 Composite materials, and their application to supercapacitor electrodes. Background technique [0002] Nowadays, with the rapid development of science and technology, the rapid consumption of resources, and the increasingly serious environmental pollution, human beings are facing two important problems of resource shortage and harsh environment. Therefore, while paying attention to green and sustainable development, efficient utilization, development and storage of resources have also become the focus of attention. As a new type of energy storage device, supercapacitor has the characteristics of large specific capacity, high power density, long cycle life and environmental friendliness. It is widely used in transportation, military equipment and other fields, and has become a hot spot of global researchers. [0003] Supercapacitors are mainl...

Claims

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Application Information

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IPC IPC(8): H01G11/40H01G11/46
CPCH01G11/40H01G11/46Y02E60/13
Inventor 龚勇陈建李琳黄坤刘平周孝林李玉梅范凌锋
Owner ZIGONG DONGXIN CARBON CO LTD
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