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Antimony-carbon nano-tube-carbon composite material, as well as preparation method and application thereof

A technology of carbon composite materials and carbon nanotubes, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of complex preparation process, expensive raw materials, fast capacity decay, etc., to achieve repeatable Good performance, abundant sources, and the effect of improving conductivity

Active Publication Date: 2018-11-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To a certain extent, although the above methods can make up for the shortcomings of antimony electrodes, there are still problems such as complex preparation process, expensive raw materials, irregular shape and fast capacity decay.

Method used

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  • Antimony-carbon nano-tube-carbon composite material, as well as preparation method and application thereof
  • Antimony-carbon nano-tube-carbon composite material, as well as preparation method and application thereof
  • Antimony-carbon nano-tube-carbon composite material, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] One, a kind of preparation method of antimony / carbon nanotube / carbon composite material:

[0031] (1) Treat the original carbon nanotubes with a mixed solution of sulfuric acid and nitric acid with a volume ratio of 1:1 at 70° C. for 1 hour, then dilute, suction filter, wash, dry at 80° C. overnight, and collect the product for later use;

[0032] (2) Dissolve the acidified carbon nanotubes, polyethylene glycol (200) and sodium lauryl sulfate in 40 mL of absolute ethanol at a mass ratio of 0.05:1:1, and sonicate for 2 hours until the carbon tubes are dispersed Uniformly, then 4mmol of antimony trichloride (SbCl 3 ) was dissolved in the above mixed solution, and stirred for 1h under magnetic force;

[0033] (3) Measure 27mL of 1M sodium hydroxide solution with a constant pressure separating funnel, add it dropwise to the above mixed solution, and continue magnetic stirring for 1.5h;

[0034] (4) Transfer the mixed solution to a 100 mL polytetrafluoroethylene-lined auto...

Embodiment 2

[0042] A preparation method of antimony / carbon nanotube / carbon composite material:

[0043] (1) Treat the original carbon nanotubes with a mixed solution of sulfuric acid and nitric acid with a volume ratio of 1:1 at 70° C. for 1 hour, then dilute, suction filter, wash, dry at 80° C. overnight, and collect the product for later use;

[0044] (2) Dissolve the acidified carbon nanotubes, polyethylene glycol (200) and sodium lauryl sulfate in 40 mL of absolute ethanol at a mass ratio of 0.05:1:1, and sonicate for 2 hours until the carbon tubes are dispersed Uniformly, then 4mmol of antimony trichloride (SbCl 3 ) was dissolved in the above mixed solution, and stirred for 1 h under magnetic force. ;

[0045] (3) Measure 27mL of 1M sodium hydroxide solution with a constant pressure separating funnel, add it dropwise to the above mixed solution, and continue magnetic stirring for 1h;

[0046] (4) Transfer the mixed solution to a 100 mL polytetrafluoroethylene-lined autoclave, and ...

Embodiment 3

[0049] A preparation method of antimony / carbon nanotube / carbon composite material:

[0050] (1) Treat the original carbon nanotubes with a mixed solution of sulfuric acid and nitric acid with a volume ratio of 1:1 at 70° C. for 1 hour, then dilute, suction filter, wash, dry at 80° C. overnight, and collect the product for later use;

[0051] (2) Dissolve the acidified carbon nanotubes, polyethylene glycol (200) and sodium lauryl sulfate in 40 mL of absolute ethanol at a mass ratio of 0.05:1:1, and sonicate for 2 hours until the carbon tubes are dispersed Uniformly, then 4mmol of antimony trichloride (SbCl3) was dissolved in the above mixed solution, and magnetically stirred for 1h;

[0052] (3) Measure 27mL of 1M sodium hydroxide solution with a constant pressure separating funnel, add it dropwise to the above mixed solution, and continue magnetic stirring for 2h;

[0053] (4) Transfer the mixed solution to a 100 mL polytetrafluoroethylene-lined autoclave, and heat to 150° C....

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Abstract

The invention discloses an antimony-carbon nano-tube-carbon composite material, a preparation method of the composite material and application of the composite material in the cathode material of a lithium ion or sodium ion battery. The composite material has a nanorod shape, wherein antimony particles are uniformly distributed in a carbon-based layer generated by in-situ synthesis. The preparation method comprises the following steps: treating an original multi-wall carbon nano-tube with a mixed solution of sulfuric acid and nitric acid to obtain an acidified carbon nano-tube; dissolving theacidified carbon nano-tube and polyethylene glycol with lauryl sodium sulfate, adding antimony trichloride, and dropwise adding a sodium hydroxide solution into the mixed solution, heating and insulating; cooling, washing and drying to obtain an antimony trichloride / carbon nano-tube precursor; uniformly mixing the precursor with an organic high-molecular polymer, sufficiently grinding, and calcining in an inert gas atmosphere to obtain the antimony / carbon nano-tube / carbon composite material. The preparation process is simple and has easily controlled synthesizing conditions; and the product has a relatively high specific capacity, excellent charging and discharging efficiency, cycling efficiency and high rate performance.

Description

technical field [0001] The invention relates to an antimony / carbon nanotube / carbon (Sb-CNT-C) composite material, a preparation method and an application of an anode material for lithium ion and sodium ion batteries, and belongs to the technical field of energy storage materials. Background technique [0002] With the development of science and technology, the energy problem is becoming more and more serious. The key to solving the energy problem is to find green and efficient renewable resources. Secondary batteries have been rapidly developed due to their high energy efficiency and long cycle life. Among many secondary battery systems, lithium-ion batteries are widely used in portable electronic devices and electric vehicles due to their high operating voltage, high specific capacity, long cycle life, no memory effect, and environmental friendliness. Graphite carbon, a negative electrode material for commercial lithium-ion batteries, has good rechargeability and safety pe...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/38H01M4/587H01M4/62H01M10/0525H01M10/054B82Y30/00
CPCB82Y30/00H01M4/366H01M4/38H01M4/587H01M4/625H01M10/0525H01M10/054Y02E60/10
Inventor 王丽娜王佳刘天西田军舰伏璀玫
Owner DONGHUA UNIV
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