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Carbon nanofiber material and preparing method and application of carbon nanofiber material

A carbon nanofiber and nanofiber technology, applied in the field of carbon nanofiber materials and their preparation, can solve the problems of high cost and complex preparation method, and achieve the effects of preventing contact with electrolyte, shortening diffusion distance, and fast and continuous electron transmission

Active Publication Date: 2014-05-21
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the technical problems of complex preparation methods and high cost of existing materials, and provide a carbon nanofiber negative electrode material with a lower cost and a simpler preparation method and its preparation method

Method used

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  • Carbon nanofiber material and preparing method and application of carbon nanofiber material
  • Carbon nanofiber material and preparing method and application of carbon nanofiber material
  • Carbon nanofiber material and preparing method and application of carbon nanofiber material

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Prepare electrospinning solution: add 0.5g of polyvinylpyrrolidone (PVP; Mw=1300000) to 10.5ml of absolute ethanol, then add 3.5ml of glacial acetic acid, stir for 3 to 5 hours, then add 1.0g of stannous octoate ( C 16 h 30 o 4 Sn) and 0.8g titanium isopropoxide (Ti(OiPr) 4 ), and stirred for 10 to 20 minutes to obtain an electrospinning solution. Wherein, the ratio of the amount of tin and titanium precursor substances is 1:1;

[0025]Preparation of polymer nanofiber membrane by electrospinning process: Pour the electrospinning solution into a syringe with a needle with an inner diameter of 1.2mm, in an environment with a temperature of 25-30°C and a relative humidity of 5-10%, with a voltage of 14kV Electrospinning at an injection speed of 0.5ml / h. Receive with the rotating drum that the rotating speed is 600rpm, and the receiving distance is controlled as 15cm. After the spinning time reaches 20h, the polymer nanofiber membrane is obtained;

[0026] The first ...

Embodiment 2

[0030] Configure the electrospinning solution: add 0.5g of polyvinylpyrrolidone (PVP; Mw=1300000) to 10.5ml of absolute ethanol, then add 3.5ml of glacial acetic acid, stir for 3 to 5 hours, then add 10.7g of stannous octoate ( C 16 h 30 o 4 Sn) and 0.8g titanium isopropoxide (Ti(OiPr) 4 ), and stirred for 10 to 20 minutes to obtain an electrospinning solution. Wherein, the ratio of the amount of substances of tin and titanium precursors is 10:1;

[0031] Preparation of polymer nanofiber membrane by electrospinning process: Pour the electrospinning solution into a syringe with a needle with an inner diameter of 0.9mm, in an environment with a temperature of 20-25°C and a relative humidity of 10-15%, with a voltage of 15kV Electrospinning at an injection speed of 0.6ml / h. Receive with the rotating drum that the rotating speed is 650rpm, and the receiving distance is controlled as 16cm. After the spinning time reaches 20h, the polymer nanofiber membrane is obtained;

[00...

Embodiment 3

[0036] Configure the electrospinning solution: add 0.5g of polyvinylpyrrolidone (PVP; Mw=1300000) to 10.5ml of absolute ethanol, then add 3.5ml of glacial acetic acid, stir for 3 to 5 hours, then add 0.5g of stannous octoate ( C 16 h 30 o 4 Sn) and 0.8g titanium isopropoxide (Ti(OiPr) 4 ), and stirred for 10 to 20 minutes to obtain an electrospinning solution. Wherein, the ratio of the amount of tin and titanium precursor substances is 1:2;

[0037] Preparation of polymer nanofiber membrane by electrospinning process: Pour the electrospinning solution into a syringe with a needle with an inner diameter of 1.0mm, in an environment with a temperature of 15-20°C and a relative humidity of 15-20%, with a voltage of 16kV Electrospinning at an injection speed of 0.7ml / h. Receive with the rotating drum that the rotating speed is 700rpm, and the receiving distance is controlled as 17cm. After the spinning time reaches 20h, the polymer nanofiber membrane is obtained;

[0038] Th...

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Abstract

The invention relates to a carbon nanofiber material and a preparing method and application of the carbon nanofiber material. The technical problems that an exiting material preparing method is complex and high in cost are solved. The inner layer of the carbon nanofiber material is made of titanic oxide, the outer layer is a nitrogen doped carbon wrapping layer, the diameter of the carbon nanofiber ranges from 100 nanometers to 150 nanometers, and the thickness of a carbon layer ranges from 2 nanometers to 8 nanometers. The invention further provides the preparing method and application of the carbon nanofiber material, and the carbon nanofiber material can be widely applied to the field of preparing battery materials.

Description

technical field [0001] The invention relates to the field of battery materials, in particular to a carbon nanofiber material and its preparation method and application. Background technique [0002] In recent years, oil resources have been depleted day by day, and problems such as the global greenhouse effect have also intensified. This situation makes the development of clean and efficient energy storage devices increasingly urgent. Among all energy storage devices, lithium-ion batteries are widely used as power devices for portable electronic products, such as laptops, mobile phones, and MP3s, due to their advantages such as high energy density, long cycle life, and small self-discharge. Although lithium-ion batteries occupy a dominant position in the power supply market for small and lightweight products, it is difficult for current commercialized lithium-ion batteries to become the driving energy for large electrical appliances such as hybrid electric vehicles. The mos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B1/00B82B3/00B82Y40/00B82Y30/00H01M4/583
CPCY02E60/10
Inventor 于运花杨程刘远杨小平
Owner BEIJING UNIV OF CHEM TECH
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