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Tin selenide @ carbon nano fiber composite material, and preparation method and application thereof

A technology of carbon nanofibers and composite materials, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of complex preparation methods and high costs, and achieve the effects of simple and easy process, low cost and high reactivity

Inactive Publication Date: 2017-05-31
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problems of complex preparation methods and high cost of the existing materials, the present invention provides a tin selenide@carbon nanofiber composite material with a simple preparation method and good performance of the obtained material and its preparation method and application

Method used

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  • Tin selenide @ carbon nano fiber composite material, and preparation method and application thereof
  • Tin selenide @ carbon nano fiber composite material, and preparation method and application thereof
  • Tin selenide @ carbon nano fiber composite material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] (1) Configure electrospinning precursor solution: 1g polyacrylonitrile (PAN; M w =150 000) was dissolved in 10 mL of N,N-dimethylformamide (DMF), and then stirred at 60°C for 5 h until completely dissolved. Then add 4mmol tin chloride and 4mmol selenium dioxide, and uniformly disperse all reactants under magnetic stirring to obtain an electrospinning precursor solution.

[0026] (2) Preparation of polymer nanofiber membrane by electrospinning method: put the electrospinning solution into a syringe, the inner diameter of the needle is 1.2 mm, the temperature is 25° C., and the relative humidity is 10%. Set the injection rate to 0.5ml / h, the voltage to 17kV, the rotational speed of the receiving drum to 900r / min, and control the receiving distance to 15cm. The polymer nanofiber membrane was obtained after spinning for 10 h.

[0027] (3) Heat treatment process: heat-treat the polymer nanofiber membrane obtained in step (2) at 600° C. under a nitrogen atmosphere, hold the...

Embodiment 2

[0029] (1) Configure electrospinning precursor solution: mix 1g polyvinylpyrrolidone (PVP; M w =1300 000) was dissolved in 10 mL of absolute ethanol, and then stirred at room temperature for 4 h until completely dissolved. Add 4mmol of selenium acetate and 4mmol of selenium powder, and disperse all reactants uniformly under magnetic stirring to obtain an electrospinning precursor solution.

[0030] (2) Preparation of polymer nanofiber membrane by electrospinning method: put the electrospinning solution into a syringe, the inner diameter of the needle is 0.9 mm, the temperature is 25° C., and the relative humidity is 10%. Set the injection rate to 0.4ml / h, the voltage to 12kV, the speed of the receiving drum to 600r / min, and control the receiving distance to 15cm. The polymer nanofiber membrane was obtained after spinning for 10 h.

[0031] (3) Heat treatment process: heat-treat the polymer nanofiber membrane obtained in step (2) at 700° C. under a nitrogen atmosphere, hold t...

Embodiment 3

[0033] (1) Configure electrospinning precursor solution: 0.5g polyacrylonitrile (PAN; M w =150 000) and 0.5 g of polyvinylpyrrolidone were dissolved in 10 mL of N,N-dimethylformamide (DMF), and then stirred at 60° C. for 5 h until completely dissolved. Then add 4 mmol of stannous chloride and 4 mmol of selenium dioxide, and uniformly disperse all reactants under magnetic stirring to obtain an electrospinning precursor solution.

[0034] (2) Preparation of polymer nanofiber membrane by electrospinning method: put the electrospinning solution into a syringe, the inner diameter of the needle is 0.9 mm, the temperature is 25° C., and the relative humidity is 10%. Set the injection rate to 1ml / h, the voltage to 17kV, the rotational speed of the receiving drum to 900r / min, and control the receiving distance to 20cm. The polymer nanofiber membrane was obtained after spinning for 7 h.

[0035] (3) Heat treatment process: heat-treat the polymer nanofiber membrane obtained in step (2)...

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Abstract

The invention relates to a tin selenide @ carbon nano fiber composite material, and a preparation method and application thereof, and solves the technical problems that the existing material preparation method is complex and the cost is high. In-situ generated tin selenide is uniformly dispersed in carbon nano fiber, and the diameter of the carbon nano fiber is 300-400 nanometers. The invention also provides the preparation method and application of the tin selenide @ carbon nano fiber composite material. The tin selenide @ carbon nano fiber can be widely used in the field of preparation of electrode materials.

Description

technical field [0001] The invention relates to the field of battery materials, in particular to a tin selenide@carbon nanofiber composite material and its preparation method and application. Background technique [0002] With the development and progress of science and technology, people's demand for energy is increasing day by day, leading to the depletion of traditional petroleum fuels, and the increasing environmental problems such as the greenhouse effect. Therefore, the development of clean and efficient energy storage equipment is becoming increasingly urgent. Currently commercial lithium-ion batteries are widely used in portable electronic devices, such as laptops, smartphones, and cameras, due to their high energy density, excellent cycle performance, and low self-discharge. However, with the improvement of the performance of portable devices and the promotion of the application of large-scale electric devices such as electric vehicles, the current energy density an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/587H01M4/38H01M4/36
CPCH01M4/362H01M4/387H01M4/587Y02E60/10
Inventor 兰金叻原浩成杨小平于运花
Owner BEIJING UNIV OF CHEM TECH
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