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Application of nickel sulfide/carbon nanotube flexible composite film material in negative electrode of lithium ion battery

A carbon nanotube thin film and lithium-ion battery technology, which is applied in the direction of carbon nanotubes, battery electrodes, nano-carbon, etc., can solve the problems that cannot meet the requirements of large-scale industrialization of flexible devices, achieve low preparation costs, and improve volume change , the effect of process stability

Inactive Publication Date: 2019-12-24
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, looking at the current status of such materials, most of them exist in the form of powder, which cannot meet the requirements of large-scale industrialization of flexible devices.

Method used

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  • Application of nickel sulfide/carbon nanotube flexible composite film material in negative electrode of lithium ion battery
  • Application of nickel sulfide/carbon nanotube flexible composite film material in negative electrode of lithium ion battery
  • Application of nickel sulfide/carbon nanotube flexible composite film material in negative electrode of lithium ion battery

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Embodiment 1

[0040] Embodiment 1: prepare NiS / CNTs-2, wherein sulfur source Na 2 The concentration of S was 2.1 mg / mL.

[0041] (1) Gas phase pyrolysis method prepares silicon oxide / carbon nanotube composite film material: 1) weigh 24.03g ethanol, 0.432g ferrocene, 0.22g thiophene, wherein, ethanol is as the carbon source of this reaction, ferrocene As a catalyst, thiophene is used as a promoter, and the above-mentioned tetraethyl orthosilicate (TEOS) with a total mass fraction of 4% (~1.028g) is weighed as a silicon source for the reaction, and the above solution is continuously ultrasonically dispersed at 50°C for 60 minutes. After obtaining a relatively uniform dispersion, transfer it to a syringe as a precursor solution; 2) Completely seal the vertical CVD furnace, continuously feed 100 sccm of Ar, completely remove the residual air in the furnace, and raise the temperature of the vertical CVD furnace to 1150°C , keep warm for 5h; 3) After steps 1) and 2) are completed, turn off the A...

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Abstract

The invention discloses the application of a nickel sulfide / carbon nanotube flexible composite film material in the electrode of a lithium ion battery. The preparation method of the composite film material comprises the steps that urea and nickel nitrate are added to an aqueous solution of ethanol, and then a silicon oxide / carbon nanotube film is added, immersed and removed at room temperature, placed in an oven at 100 DEG C to 110 DEG C for 10 to 15h, cooled naturally at room temperature, washed and dried to acquire a silicate / carbon nanotube film for standby; deionized water is mixed with ethanol, and Na2S is added as a sulfur source to prepare a solution with a concentration of 1 to 2.5mg / mL; the silicate / carbon nanotube film is immersed in the solution, reacts at 150 to 200 DEG C for 10 to 15h; and natural cooling, washing and drying are carried out to acquire the nickel sulfide / carbon nanotube flexible composite film material. The nickel sulfide / carbon nanotube flexible compositefilm material can be directly used as the negative electrode material of the lithium ion battery.

Description

technical field [0001] The invention relates to the technical field of material chemistry, in particular to the application of a nickel sulfide / carbon nanotube flexible composite film material in lithium ion batteries. Background technique [0002] Globally, the demand for energy is increasing exponentially, so its sustainability has attracted worldwide attention. Rechargeable batteries could enable large-scale energy storage to meet growing energy demands. Commercial lithium-ion batteries (LIBs) have the advantages of high energy density, good safety performance, high output voltage, high power density, long cycle life, high design flexibility, and environmental protection, and their application fields are constantly expanding. Lithium-ion battery technology has occupied the portable mobile electronics market and is widely used in small electronic devices such as mobile phones, laptop computers, and digital cameras. In recent years, it has also played an increasingly impor...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M4/62H01M10/0525C01B32/158
CPCC01B32/158H01M4/362H01M4/5815H01M4/583H01M4/625H01M10/0525Y02E60/10
Inventor 侯峰卢竼漪
Owner TIANJIN UNIV
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