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Nitrogen and phosphorus co-doped carbon material as well as preparation method and application thereof

A technology of co-doping and phosphorus elements, applied in the field of materials, can solve the problems of complex preparation methods and poor repeatability, and achieve the effects of good repeatability and obvious doping effect.

Active Publication Date: 2018-07-13
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of complex preparation methods and poor repeatability of existing materials, and to provide a carbon material co-doped with nitrogen and phosphorus elements with obvious doping effect and good repeatability, and its preparation method and application

Method used

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  • Nitrogen and phosphorus co-doped carbon material as well as preparation method and application thereof
  • Nitrogen and phosphorus co-doped carbon material as well as preparation method and application thereof
  • Nitrogen and phosphorus co-doped carbon material as well as preparation method and application thereof

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Effect test

Embodiment 1

[0031] Preparation of reaction matrix: Disperse 300 mg of silica nanospheres with a diameter of 500±50 nm in 100 mL of Tris buffer (PH=8.5), form a suspension by ultrasonic treatment, add 50 mg of F127 and 200 mg of dopamine hydrochloride in sequence, , stirred at 25°C for 10 hours, centrifuged, washed, pre-frozen, and dried in a freeze dryer for 15 hours to obtain a powdery reaction matrix.

[0032] Nitrogen and phosphorus co-doped materials were prepared by chemical reaction: the dry powder was dispersed in 50mL tetrahydrofuran solution, 100mg hexachlorocyclotriphosphazene monomer and 2mL triethylamine were added successively, and stirred at 30°C for 10 hours, centrifuged, washed, pre-frozen, and dried in a freeze dryer for 15 hours to obtain a powdery nitrogen and phosphorus element co-doped material.

Embodiment 2

[0034] Preparation of the reaction matrix: Disperse 300g of silica nanospheres with a diameter of 500±50nm in 100mL Tris buffer (PH=8.5), form a suspension by ultrasonic treatment, add 100mg of F127 and 200mg of dopamine hydrochloride in sequence, , stirred at 25°C for 15 hours, centrifuged, washed, pre-frozen, and dried in a freeze dryer for 15 hours to obtain a powdery reaction matrix.

[0035] Nitrogen and phosphorus co-doped materials were prepared by chemical reaction: the dry powder was dispersed in 50mL tetrahydrofuran solution, 100mg hexachlorocyclotriphosphazene monomer and 2mL triethylamine were added successively, and stirred at 30°C for 10 hours, centrifuged, washed, pre-frozen, and dried in a freeze dryer for 15 hours to obtain a powdery nitrogen and phosphorus element co-doped material.

Embodiment 3

[0037] Preparation of the reaction matrix: Disperse 300g of silica nanospheres with a diameter of 500±50nm in 100mL Tris buffer (PH=8.5), form a suspension by ultrasonic treatment, add 200mg of dopamine hydrochloride, and in air atmosphere, 25 ℃ Stir for 12 hours, centrifuge, wash, pre-freeze, and dry in a freeze dryer for 15 hours to obtain a powdery reaction matrix.

[0038] Nitrogen and phosphorus co-doped materials were prepared by chemical reaction: the dry powder was dispersed in 50mL tetrahydrofuran solution, 50mg hexachlorocyclotriphosphazene monomer and 1mL triethylamine were added successively, and stirred at 30°C for 10 hours, centrifuged, washed, pre-frozen, and dried in a freeze dryer for 15 hours to obtain a powdery nitrogen and phosphorus element co-doped material.

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Abstract

The invention relates to a nitrogen and phosphorus co-doped carbon material as well as a preparation method and application thereof, aiming at solving the technical problems that the existing materialis complicated in preparation method and poor in repeatability. The nitrogen and phosphorus co-doped carbon material is prepared by taking polydopamine or bacterial cellulose as a carbon source and using a hexachlorophosphazene monomer as a nitrogen and phosphorus co-doped source. The invention also provides the preparation method and application of the nitrogen and phosphorus co-doped carbon material. The nitrogen and phosphorus co-doped carbon material can be applied to the field of preparation of battery materials.

Description

technical field [0001] The invention relates to the field of materials, in particular to a carbon material co-doped with nitrogen and phosphorus elements and its preparation method and application. Background technique [0002] With the increasing energy demand and the gradual consumption of non-renewable resources in today's society, the requirements and challenges for the development of energy storage devices are becoming increasingly severe. Secondary batteries such as lithium-ion batteries, lithium-sulfur batteries, and sodium-ion batteries have the characteristics of high energy density, long cycle life, and environmental friendliness. Supercapacitors have the characteristics of high power density, long cycle life, and good fast charge and discharge performance. All kinds of energy storage devices are expected to be widely used in new energy vehicles, wearable flexible devices and other fields. However, the two energy storage devices need to have better electrochemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/587H01M10/052H01M10/0525H01M10/054H01G11/32
CPCH01G11/32H01M4/362H01M4/587H01M10/052H01M10/0525H01M10/054Y02E60/10
Inventor 于运花王海军兰金叻杨小平
Owner BEIJING UNIV OF CHEM TECH
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