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Nitrogen-phosphorus co-doped ordered mesoporous carbon material and preparation method thereof and application thereof

A mesoporous carbon and co-doping technology, applied in non-aqueous electrolyte battery electrodes, electrical components, battery electrodes, etc., can solve the problems of complex process, potential safety hazards, low yield, etc., to increase surface defects and improve electrical conductivity. , the effect of facilitating storage

Active Publication Date: 2019-05-07
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing reports are single-atom (such as: nitrogen, sulfur, phosphorus) doping, and there are few studies on double-atom doping carbon materials, and some of them have problems such as complex process, low yield, high cost, and potential safety hazards.

Method used

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  • Nitrogen-phosphorus co-doped ordered mesoporous carbon material and preparation method thereof and application thereof
  • Nitrogen-phosphorus co-doped ordered mesoporous carbon material and preparation method thereof and application thereof
  • Nitrogen-phosphorus co-doped ordered mesoporous carbon material and preparation method thereof and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Weigh 1.25 g of sucrose and place it in a beaker, then use a graduated cylinder to measure 5 mL of deionized water and add it to the above beaker, stir until completely dissolved, then add 0.14 g of concentrated sulfuric acid dropwise as a dehydrating agent and stir evenly. Weighed 1 g of SBA-15 and slowly added it into the above solution and continued to stir until it became a white viscous paste, followed by ultrasonic treatment for 10 min to improve its dispersibility. It was dried in an oven at 100°C for 6 hours, then heated to 160°C and dried for 6 hours to obtain a composite of ordered mesoporous carbon and SBA-15.

[0026]Weigh 1 g of the above composite solid and grind it into a powder, mix it with 5 g of ammonium dihydrogen phosphate and dissolve it in deionized water, then place it in a water bath at 60 °C to evaporate the solvent water, and after drying, grind the obtained powder into a powder in Calcined at 800 °C for 5 hours in a tube furnace under an argon...

Embodiment 2

[0030] Weigh 2.25 g of glucose and place it in a beaker, then use a graduated cylinder to measure 5 mL of deionized water and add it to the above beaker, stir until completely dissolved, then add 0.24 g of concentrated sulfuric acid dropwise as a dehydrating agent and stir evenly. Weighed 1 g of SBA-15 and slowly added it into the above solution and continued to stir until it became a white viscous paste, followed by ultrasonic treatment for 10 min to improve its dispersibility. It was dried in an oven at 100 °C for 6 hours, then heated to 160 °C and dried for 6 hours to obtain a composite of ordered mesoporous carbon and SBA-15.

[0031] Weigh 1 g of the above composite solid and grind it into a powder, mix it with 5 g of ammonium phosphate and dissolve it in deionized water, then place it in a water bath at 80 °C to evaporate the solvent water, and after drying, grind the obtained powder into a powder in a tube Calcined at 800°C for 5 hours under an argon atmosphere in the f...

Embodiment 3

[0035] Weigh 1.25 g of fructose and put it in a beaker, then use a graduated cylinder to measure 5 mL of deionized water and add it to the above beaker, stir until completely dissolved, then add 0.14 g of concentrated sulfuric acid dropwise as a dehydrating agent and stir evenly. Weighed 1 g of SBA-15 and slowly added it into the above solution and continued to stir until it became a white viscous paste, followed by ultrasonic treatment for 10 min to improve its dispersibility. It was dried in an oven at 100°C for 6 hours, then heated to 160°C and dried for 6 hours to obtain a composite of ordered mesoporous carbon and SBA-15.

[0036] Weigh 1 g of the above composite solid and grind it into powder, mix it with 7 g of hexachlorotripolyphosphazene and dissolve it in deionized water, then place it in a water bath at 60 °C to evaporate the solvent water, and after drying, grind the obtained product into The powder was calcined at 600 °C for 5 hours under an argon atmosphere in a ...

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Abstract

The invention discloses a preparation method of a nitrogen-phosphorus co-doped ordered mesoporous carbon material and application of a nitrogen-phosphorus co-doped ordered mesoporous carbon material.The nitrogen-phosphorus co-doped ordered mesoporous carbon material takes organic sugar as a carbon source, a mesoporous template agent is employed to synthesize ordered mesoporous carbon, the orderedmesoporous carbon is mixed with the nitrogen and phosphorus source with different proportions to form a solution and perform water bath drying by distillation, the obtained mixture is subjected to high-temperature calcination and pyrogenic decomposition to achieve nitrogen-phosphorus co-doping, and the mesoporous template agent is removed to obtain a high-performance sodium-ion battery anode material. The nitrogen-phosphorus co-doped ordered mesoporous carbon material is simple and convenient in preparation process and high in doping amount, is taken as a sodium-ion battery anode material tohave excellent cycle performance and a large rate charge and discharge performance and have a broad application prospect in the energy storage field.

Description

technical field [0001] The invention relates to the technical field of negative electrode materials for sodium ion batteries, in particular to a method for preparing nitrogen and phosphorus co-doped ordered mesoporous carbon materials used for negative electrodes of sodium ion batteries. Background technique [0002] With the rapid development of the electric vehicle industry and renewable energy sources (such as wind energy, solar energy, etc.) worldwide, lithium-ion batteries have attracted extensive attention due to their excellent electrochemical performance and many advantages. However, the lack and uneven distribution of lithium reserves lead to high cost of lithium-ion batteries. Therefore, the development of new battery energy storage systems with excellent comprehensive performance and meeting the needs of future large-scale applications has attracted extensive attention. Thanks to the abundant reserves of sodium and the similar physical and chemical properties to l...

Claims

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Application Information

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IPC IPC(8): H01M4/13H01M4/139H01M4/36H01M4/62
CPCY02E60/10
Inventor 赵翰庆叶建岐李忠宋玮
Owner TAIYUAN UNIV OF TECH
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