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Tricobalt tetraoxide-FTO nanowire lithium battery anode material and preparation method

A negative electrode material and nanowire technology, which is applied in the field of preparing Co3O4-FTO nanowire lithium battery negative electrode materials, can solve the problems of difficult dispersion and spinning of FTO, and achieve the effects of reducing environmental protection pressure, increasing preparation speed and small size.

Inactive Publication Date: 2018-01-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the FTO-Co 3 o 4 It is very difficult to spin, and FTO is difficult to disperse in solvents. At present, there is no FTO-Co 3 o 4 A precedent for successful spinning

Method used

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  • Tricobalt tetraoxide-FTO nanowire lithium battery anode material and preparation method
  • Tricobalt tetraoxide-FTO nanowire lithium battery anode material and preparation method
  • Tricobalt tetraoxide-FTO nanowire lithium battery anode material and preparation method

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Experimental program
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Effect test

Embodiment 1

[0049] Weigh 0.5821g Co(NO 3 ) 2 ·6H 2 O was dissolved in 14mL of absolute ethanol, stirred at room temperature for 30 minutes with a magnetic stirrer to obtain a uniformly mixed solution A; weigh 0.0296gNH 4 F was added to 3mL of deionized water, and then 0.4513g of SnCl was added 2 2H 2 O, 13mL absolute ethanol, 4mLDMF, 1mLHF, stir with a magnetic stirrer at room temperature for 30 minutes to obtain a uniformly mixed solution B; mix A and B evenly with a magnetic stirrer at room temperature for 1 hour, then add 3.3653 gPVP, stirred at room temperature for 7 hours to obtain a uniform and viscous spinning solution C; put the configured precursor spinning solution C into a 10mL plastic syringe, spin with an air spinning device, and adjust the flow rate to 3mL / h, the air pressure is set to 0.060MPa, the distance between the needle of the injection tube and the collection net is 12cm, and the spun fiber precursor is received by a 304 stainless steel net; finally, the Co 3 o ...

Embodiment 2

[0056] Weigh 1.1641g Co(NO 3 ) 2 ·6H 2 O was dissolved in 14mL of absolute ethanol, stirred at room temperature for 30 minutes with a magnetic stirrer to obtain a uniformly mixed solution A; weigh 0.0296gNH 4 F was added to 3mL of deionized water, and then 0.4513g of SnCl was added 2 2H 2 O, 13mL absolute ethanol, 4mLDMF, 1mLHF, stir with a magnetic stirrer at room temperature for 30 minutes to obtain a uniformly mixed solution B; mix A and B evenly with a magnetic stirrer at room temperature for 1 hour, then add 3.3653 gPVP, stirred at room temperature for 7 hours to obtain a uniform and viscous spinning solution C; put the configured precursor spinning solution C into a 10mL plastic syringe, spin with an air spinning device, and adjust the flow rate to 3mL / h, the air pressure is set to 0.060MPa, the distance between the needle of the injection tube and the collection net is 12cm, and the spun fiber precursor is received by a 304 stainless steel net; finally, the Co 3 o ...

Embodiment 3

[0059] Weigh 1.7462g Co(NO 3 ) 2 ·6H 2 O was dissolved in 14mL of absolute ethanol, stirred at room temperature for 30 minutes with a magnetic stirrer to obtain a uniformly mixed solution A; weigh 0.0296gNH 4 F was added to 3mL of deionized water, and then 0.4513g of SnCl was added 2 2H 2 O, 13mL absolute ethanol, 4mLDMF, 1mLHF, stir with a magnetic stirrer at room temperature for 30 minutes to obtain a uniformly mixed solution B; mix A and B evenly with a magnetic stirrer at room temperature for 1 hour, then add 4.4078 gPVP, stirred at room temperature for 7 hours to obtain a uniform and viscous spinning solution C; put the configured precursor spinning solution C into a 10mL plastic syringe, spin with an air spinning device, and adjust the flow rate to 3mL / h, the air pressure is set to 0.060MPa, the distance between the needle of the injection tube and the collection net is 12cm, and the spun fiber precursor is received by a 304 stainless steel net; finally, the Co 3 o ...

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Abstract

The invention relates to a method for preparing a Co2O4-FTO nanowire lithium battery anode material, and belongs to the field of lithium ion batteries. The preparation method comprises the following steps: evenly mixing a cobalt source with absolute ethyl alcohol to obtain a solution A; dissolving a fluorine source and a tin source into a mixed solution of water, the absolute ethyl alcohol and DMF(Dimethylfumarate) in a molar ratio of 1: (1.5 to 15) and uniformly mixing to obtain a solution B; evenly mixing the solution A with the solution B in a mass ratio of 1: (0.5 to 20), and then adding abinding agent to obtain a solution C; carrying out gas spinning on the solution C, and setting flow velocity of a spinning solution as 2.2 to 12mL / h, air pressure as 0.02 to 2MPa and a distance between a spinning jet and a collection device as 10 to 50cm so as to obtain precursor fibers; sintering the precursor fibers to obtain the Co2O4-FTO nanowire lithium battery anode material. The inventionprovides the method for conveniently and quickly preparing the Co2O4-FTO nanowire lithium battery anode material, and the obtained anode material has large electrode capacity and good circulation stability.

Description

technical field [0001] The present invention relates to a kind of preparation Co 3 o 4 -The method for the negative electrode material of FTO nanowire lithium battery belongs to the field of lithium ion battery. Background technique [0002] In recent years, lithium-ion batteries are considered to be one of the most promising energy sources for portable devices and hybrid electric vehicles due to their safety, no pollution, no memory effect, high energy density, and good rechargeability. Known as the ideal power supply in the 21st century. [0003] In lithium-ion batteries, the anode material is the most important component, because its ability to absorb / desorb lithium ions affects the performance of the lithium-ion battery, so the capacity of the anode material is one of the important factors affecting the battery capacity. At present, commercial lithium-ion batteries mainly use graphite as the negative electrode material. However, the theoretical maximum lithium interc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/485H01M4/525H01M10/0525B82Y30/00B82Y40/00
CPCY02E60/10
Inventor 何泓材杜玮刘哲廷罗强郭甜王宁
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA