A kind of sodium ion battery metal oxide/polypyrrole hollow nanotube negative electrode composite material and preparation method thereof

A sodium-ion battery, hollow nanotechnology, applied in the direction of battery electrodes, nanotechnology, nanotechnology, etc., can solve the problems of low electronic/ionic conductivity, reduce the rate performance of electrode materials, reduce the cycle stability of electrode materials, etc., to achieve repeatable Good performance, excellent cycle stability, broad industrial application prospects

Inactive Publication Date: 2019-06-18
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, metal oxides have high theoretical sodium storage capacity as anode materials for sodium-ion batteries, but due to their low electronic / ionic conductivity, their rate performance as electrode materials is reduced; in addition, due to their intercalation / Severe volume changes occur during the extraction of sodium ions, which greatly reduces its cycle stability as an electrode material

Method used

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  • A kind of sodium ion battery metal oxide/polypyrrole hollow nanotube negative electrode composite material and preparation method thereof
  • A kind of sodium ion battery metal oxide/polypyrrole hollow nanotube negative electrode composite material and preparation method thereof
  • A kind of sodium ion battery metal oxide/polypyrrole hollow nanotube negative electrode composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] First weigh 0.8g of methyl orange to fully dissolve it in deionized water, then weigh 5g of ferric chloride and slowly add it to the above solution under magnetic stirring conditions, and transfer the mixed solution to the water bath after continuous stirring for 2h 0.8 mL of pyrrole monomer was added dropwise to the above mixed solution under the condition of ice bath and kept under magnetic stirring for 24 h, so that the pyrrole monomer was fully polymerized in situ. Finally, the collected precipitate is filtered, washed and dried to obtain the polypyrrole hollow nanotube material.

[0039]Weigh 0.06 g of polypyrrole hollow nanotubes and add them into 150 mL of deionized water for ultrasonication for 2 h, then stir for 1 h under magnetic stirring conditions to fully disperse the polypyrrole hollow nanotubes in the deionized aqueous solution. Then 1 g of titanium sulfate was weighed and added to 50 mL of deionized water to fully dissolve it under stirring conditions, a...

Embodiment 2

[0046] First weigh 0.8g of methyl orange to fully dissolve it in deionized water, then weigh 5g of ferric chloride and slowly add it to the above solution under magnetic stirring conditions, and transfer the mixed solution to the water bath after continuous stirring for 2h 0.8 mL of pyrrole monomer was added dropwise to the above mixed solution under the condition of ice bath and kept under magnetic stirring for 24 h, so that the pyrrole monomer was fully polymerized in situ. Finally, the collected precipitate is filtered, washed and dried to obtain the polypyrrole hollow nanotube material.

[0047] Weigh 0.12 g of polypyrrole hollow nanotubes and add them into 150 mL of deionized water for ultrasonication for 2 h, then stir for 1 h under magnetic stirring conditions to fully disperse the polypyrrole hollow nanotubes in the deionized aqueous solution. Then 1 g of titanium sulfate was weighed and added to 50 mL of deionized water to fully dissolve it under stirring conditions, ...

Embodiment 3

[0050] First weigh 0.5g of methyl orange to fully dissolve it in deionized water, then weigh 5g of ferric chloride and slowly add it to the above solution under magnetic stirring conditions, and transfer the mixed solution to the water bath after continuous stirring for 2 hours 0.8 mL of pyrrole monomer was added dropwise to the above mixed solution under the condition of ice bath and kept under magnetic stirring for 24 h, so that the pyrrole monomer was fully polymerized in situ. Finally, the collected precipitate is filtered, washed and dried to obtain the polypyrrole hollow nanotube material.

[0051] Weigh 0.06 g of polypyrrole hollow nanotubes and add them into 150 mL of deionized water for ultrasonication for 2 h, then stir for 1 h under magnetic stirring conditions to fully disperse the polypyrrole hollow nanotubes in the deionized aqueous solution. Then 1 g of titanium sulfate was weighed and added to 50 mL of deionized water to fully dissolve it under stirring conditi...

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Abstract

The invention discloses a metal oxide / polypyrrole hollow nanotube negative electrode composite material for a sodium ion battery and a preparation method for the composite material. The composite material is formed by enabling metal oxide nanoparticles to be uniformly grown on the inner walls and outer walls of the polypyrrole hollow nanotubes; the preparation method comprises the steps of slowly adding pyrrole monomers into a water solution containing methyl orange and an oxidizing agent in a dropwise manner under a water bath condition; carrying out an in situ polymerization reaction while stirring to obtain the polypyrrole hollow nanotubes; and enabling the polypyrrole hollow nanotubes to be dispersed into water, then adding a metal salt solution and uniformly mixing, next, moving the mixture into a high-pressure reaction kettle to be subjected to a hydrothermal reaction to obtain the composite material. When the prepared composite material is used as the negative electrode of the sodium ion battery, the prepared sodium ion battery has high charging-discharging specific capacity, high rate capability, high stable cycle performance and the like; and in addition, the composite material is simple in preparation method, low in cost and wide in industrial application prospect.

Description

technical field [0001] The invention relates to a sodium ion battery negative electrode material and a preparation method thereof, in particular to a sodium ion battery metal oxide / polypyrrole hollow nanotube negative electrode composite material and a preparation method thereof, belonging to the field of sodium ion batteries. Background technique [0002] As an electrochemical energy storage device that occupies a dominant position in society, lithium-ion batteries have achieved good application prospects in portable electronic products and electric vehicles. However, due to the lack of metallic lithium resources and the high cost of lithium-ion batteries, the large-scale commercial application of lithium-ion batteries is facing severe challenges. Metal sodium and lithium are in the same main group in the periodic table of elements, and it has similar physical and chemical properties to metal lithium. At the same time, sodium also has the advantage of abundant reserves (the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/62H01M10/054B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/366H01M4/48H01M4/624H01M4/628H01M10/054Y02E60/10
Inventor 张治安赖延清史晓东李军明方静李劼
Owner CENT SOUTH UNIV
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