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High-performance Sb-based sodium ion battery negative electrode material as well as preparation method and application thereof

A sodium-ion battery and negative electrode material technology, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problem of difficult to achieve a uniform pore structure in the regulation and control reaction, and achieve the effect of good industrialization prospects, simple operation process, and cheap raw materials

Active Publication Date: 2022-04-22
华南师大(清远)科技创新研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is due to the fact that it is difficult to achieve a uniform pore structure in the design and regulation of the reaction.

Method used

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  • High-performance Sb-based sodium ion battery negative electrode material as well as preparation method and application thereof
  • High-performance Sb-based sodium ion battery negative electrode material as well as preparation method and application thereof
  • High-performance Sb-based sodium ion battery negative electrode material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high-performance Sb-based sodium-ion battery negative electrode material is NaSb(OH) 6 -NaSbS 2 Porous composite ball, diameter 50nm, specific surface area 150m 2 / g.

[0026] 0.228g SbCl 3 Dissolve in a 20ml ethanol beaker, then ultrasonically stir to dissolve and record it as solution A; take 0.6g of sodium sulfide nonahydrate and dissolve it in a 20ml ethanol beaker and ultrasonically stir and dissolve it as solution B; then drop B solution into A solution , and then add 1.5g of urea into the mixed solution, magnetically stir at room temperature for 1h, and finally pour it into a 50ml reaction kettle, and finally carry out 140°C hydrothermal heating in a constant temperature box for 10h. After the reaction, the obtained material was centrifuged three times with deionized water and absolute ethanol respectively, and the black powder was dried in a drying oven at 70°C for 12 hours, and finally samples were collected for future use.

[0027] After fully grinding t...

Embodiment 2

[0029] A high-performance Sb-based sodium-ion battery negative electrode material is NaSb(OH) 6 -NaSbS 2 Porous composite ball, diameter 75nm, specific surface area 250m 2 / g.

[0030] Dissolve 0.307g of antimony nitrate in a beaker filled with 20ml ethanol, and then carry out ultrasonic stirring and dissolving, and record it as solution A; take 0.6g sodium sulfide nonahydrate, dissolve it in a 20ml ethanol beaker, and dissolve it with ultrasonic stirring, and record it as solution B; into solution A, then add 2.5g of urea into the mixed solution, stir magnetically at room temperature for 1h, and finally pour into a 50ml reaction kettle, and finally carry out 180°C hydrothermal heating in a constant temperature box for 10h. After the reaction, the obtained material was centrifuged three times with deionized water and absolute ethanol respectively, and the black powder was dried in a drying oven at 70°C for 12 hours, and finally samples were collected for future use.

[0031...

Embodiment 3

[0033] A high-performance Sb-based sodium-ion battery negative electrode material is NaSb(OH) 6 -NaSbS 2 Porous composite ball, diameter 100nm, specific surface area 350m 2 / g.

[0034] Dissolve 0.193g of sodium antimonate in a 20ml ethanol beaker, and then ultrasonically stir and dissolve it as solution A; take 0.6g of sodium sulfide nonahydrate and dissolve it in a 20ml ethanol beaker and ultrasonically stir it as solution B; Drop into solution A, then add 0.5 g of urea into the mixed solution, stir magnetically at room temperature for 1 h, and finally pour it into a 50 ml reaction kettle, and finally carry out hydrothermal heating at 120° C. for 10 h in a thermostat. After the reaction, the obtained material was centrifuged three times with deionized water and absolute ethanol respectively, and the black powder was dried in a drying oven at 70°C for 12 hours, and finally samples were collected for future use.

[0035]After fully grinding the sintered material, mix it wit...

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Abstract

The invention discloses a high-performance Sb-based sodium ion battery negative electrode material, which is a NaSb (OH) 6-NaSbS2 porous composite sphere and is realized through urea regulation and control under a hydrothermal reaction. The diameter is 50-100nm, and the specific surface area is relatively high and is 150-350m < 2 > / g; the invention also discloses a preparation method of the high-performance Sb-based sodium ion battery negative electrode material and application of the high-performance Sb-based sodium ion battery negative electrode material in preparation of a sodium battery electrode. The NaSb (OH) 6-NaSbS2 porous composite spheres with rich and uniform pore structures are prepared through a one-pot method according to the characteristics of the sodium battery negative electrode material in charge-discharge circulation, and the internal pore structures can greatly relieve the volume effect caused by sodium intercalation and deintercalation in the charge-discharge process, so that the sodium storage performance of the material is greatly improved.

Description

technical field [0001] The invention relates to the technical field of anode materials for sodium-ion batteries, in particular to a high-performance Sb-based anode material for sodium-ion batteries and a preparation method and application thereof. Background technique [0002] With the rapid development of electric transportation and large-scale, a large amount of battery materials will be required to build a large-capacity smart grid. Lithium resources have problems of insufficient resources and uneven distribution. With the increasing use of people, the price of lithium resources has risen sharply, which has limited its large-scale development. Sodium is abundant in the earth's crust and cheap, which is an advantage in an era of high demand for renewable resources. Due to the electrochemical similarity between lithium and sodium, advanced research on Li paves the way for the development of Na-ion batteries. However, the sodium ion intercalation and storage mechanism is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/485H01M4/58
CPCH01M4/485H01M4/5815Y02E60/10
Inventor 岳鹿张文惠
Owner 华南师大(清远)科技创新研究院有限公司
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