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Nitrogen-enriched porous material/carbon nano structure composite material as well as preparation method and application thereof

A carbon nanostructure and porous material technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of complex nitrogen atom doping process, limited doping degree, template method is not suitable for large-scale production, etc., to achieve superior Effect of cycle performance, rate performance, and high capacity

Active Publication Date: 2015-02-04
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional nitrogen atom doping process is complicated, the cost is high, and the doping degree is limited; at the same time, the template method for constructing porous structures is not suitable for large-scale production

Method used

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  • Nitrogen-enriched porous material/carbon nano structure composite material as well as preparation method and application thereof
  • Nitrogen-enriched porous material/carbon nano structure composite material as well as preparation method and application thereof
  • Nitrogen-enriched porous material/carbon nano structure composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053]In a 20 ml thick-walled pressure-resistant reaction flask, add 0.5 g of melamine (purchased from Alfa Aisha (Tianjin) Co., with a purity of 99% by weight, the same below) and 0.4 g of terephthalaldehyde (purchased from Alfa Aisha (Tianjin) Co., Ltd. Sasha (Tianjin) Company, the purity is 99% by weight, the same below), 0.08g carbon nanotubes (purchased from Beijing Boyu Hi-Tech, the purity is 99% by weight, the same below) and 5mL dimethyl sulfoxide (purchased from Alpha Aisha (Tianjin) Co., the purity is 99% by weight, the same below), reacted at 180° C. for 72 hours under stirring, and separated the solid. Gained solid is mixed with zinc chloride (purchased from Alfa Aisha (Tianjin) Company, purity is 99% by weight, hereinafter the same) by 1:10 mass ratio, packed into a 10ml vacuum-sealed tube full of argon, pumped Vacuum seal. Afterwards, the sealed tube was heat-treated at 450°C for 6 hours at high temperature, washed three times with 0.1mol / L dilute hydrochloric a...

Embodiment 2

[0057] In 20 milliliters of thick-walled pressure-resistant reaction flasks, add 0.5 g of melamine and 0.4 g of terephthalaldehyde (purchased from Alfa Aisha (Tianjin) Company, the purity is 99% by weight, the same below) 0.08 g of carbon nanotubes ( Purchased from Beijing Boyu Hi-Tech, the purity is 99% by weight, the same below) and 5mL dimethyl sulfoxide (purchased from Alfa Aisha (Tianjin) Company, the purity is 99% by weight, the same below), under stirring at 180 ° C After 72 hours of reaction, a solid separated. Gained solid is mixed with zinc chloride (purchased from Alfa Aisha (Tianjin) Company, purity is 99% by weight, hereinafter the same) by 1:10 mass ratio, packed into a 10ml vacuum-sealed tube full of argon, pumped Vacuum seal. Afterwards, the sealed tube was heat-treated at 600°C for 4 hours at high temperature, washed three times with 0.1mol / L dilute hydrochloric acid and 10ml of distilled water, and then vacuum-dried at 80°C for 12 hours to obtain a nitrogen-...

Embodiment 3

[0060] In a 20 ml thick-walled pressure-resistant reaction flask, add 0.5 g of melamine (purchased from Alfa Aisha (Tianjin) Co., with a purity of 99% by weight, the same below) and 0.4 g of terephthalaldehyde (purchased from Alfa Aisha (Tianjin) Co., Ltd. Sasha (Tianjin) Company, the purity is 99% by weight, the same below) 0.12g carbon nanotubes (purchased from Beijing Boyu Hi-Tech, the purity is 99% by weight, the same below) and 10mL dimethyl sulfoxide (purchased from Alfa Sasha (Tianjin) Co., the purity is 99% by weight, the same below), reacted at 150° C. for 150 hours under stirring, and separated the solid. Gained solid is mixed with zinc chloride (purchased from Alfa Aisha (Tianjin) Company, purity is 99% by weight, hereinafter the same) by 1:10 mass ratio, packed into a 10ml vacuum-sealed tube full of argon, pumped Vacuum seal. Afterwards, the sealed tube was heat-treated at 600°C for 6 hours at high temperature, washed three times with 0.1mol / L dilute hydrochloric ...

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Abstract

The invention provides a nitrogen-enriched porous material / carbon nano structure composite material as well as a preparation method and application thereof. The composite material is prepared from a nitrogen-enriched porous material and various carbon nano materials by compounding. The preparation method comprises the following steps: melamine, a polyformyl aromatic compound and the carbon nano materials are in contact in an organic solvent to obtain a product, and the contacted product is subjected to a series of processes including separation, heat treatment, washing, drying and the like to obtain the nitrogen-enriched porous material / carbon nano structure composite material. The prepared nitrogen-enriched porous material / carbon nano structure composite material has the high nitrogen content, abundant pore structures and uniformly-distributed carbon nano composite components. The composite material can be used as an electrode material and is applied to secondary batteries including lithium ion batteries and the like; and the composite material has the high capacity and the excellent circulating performance and rate capability, and can meet the requirements of the lithium ion batteries in the actual application.

Description

technical field [0001] The invention belongs to the field of battery materials, and in particular relates to a nitrogen-rich porous material / carbon nanostructure composite material and its preparation method and application. Background technique [0002] Due to its high energy density and working voltage, no memory effect, long cycle life, and environmental friendliness, lithium-ion batteries have been widely used in various portable electronic devices. In recent years, due to the continuous popularization and promotion of electric vehicles, higher requirements have been put forward for the capacity and high-rate charge and discharge performance of lithium-ion batteries. The anode materials widely used in commercial lithium-ion batteries are graphite-based materials. However, the theoretical capacity of graphite is low, only 372mAh / g, and the high-current charge-discharge performance is poor. Therefore, new carbon-based anode materials with high capacity and good rate perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/133H01M4/1393H01M4/62
CPCH01M4/133H01M4/1393H01M4/62Y02E60/10
Inventor 智林杰宋琪肖志昌
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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