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Nitrogen-oxygen co-doped hollow carbon nanospheres as well as preparation method and application thereof

A carbon nano-microsphere, co-doping technology, applied in nano-carbon, nano-technology, nano-technology and other directions, can solve the problem of unsatisfactory surface area utilization rate and electrochemical performance, poor wettability of hollow carbon nano-microsphere, and cycle stability. Unsatisfactory and other problems, to achieve good rate performance and cycle stability, improve the utilization rate of specific surface area, and control the thickness of the spherical shell

Active Publication Date: 2018-08-24
SHENZHEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and provide a nitrogen-oxygen co-doped hollow carbon nanosphere and its preparation method to solve the cumbersome and time-consuming process of the existing hollow carbon nanosphere preparation method. , low yield, poor safety, and poor wettability of prepared hollow carbon nanospheres, unsatisfactory surface area utilization and electrochemical performance technical problems
[0006] Another object of the present invention is to provide a supercapacitor electrode and a supercapacitor to solve the technical problems that the existing supercapacitor has low specific capacitance and rate performance and unsatisfactory cycle stability due to its electrode material

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  • Nitrogen-oxygen co-doped hollow carbon nanospheres as well as preparation method and application thereof
  • Nitrogen-oxygen co-doped hollow carbon nanospheres as well as preparation method and application thereof
  • Nitrogen-oxygen co-doped hollow carbon nanospheres as well as preparation method and application thereof

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preparation example Construction

[0025] On the one hand, embodiments of the present invention provide a method for preparing hollow carbon nanospheres co-doped with nitrogen and oxygen. The method for preparing the hollow carbon nanospheres co-doped with nitrogen and oxygen includes the following steps:

[0026] Step S01. Preparation of hollow carbon nanosphere precursor:

[0027] Polymerizing pyrrole and aniline in an aqueous solution containing a soft template to obtain a hollow carbon nanosphere precursor;

[0028] Step S02. Carry out carbonization and activation treatment on the hollow carbon nanosphere precursor:

[0029] The hollow carbon nano microsphere precursor is washed, powdered, and then subjected to carbonization treatment and ammonia activation treatment to obtain nitrogen and oxygen co-doped hollow carbon nano microspheres.

[0030] Wherein, the method of polymerizing the pyrrole and aniline in an aqueous solution containing a soft template in step S01 can be carried out according to the following step...

Embodiment 1

[0053] This embodiment provides a hollow carbon nanosphere co-doped with nitrogen and oxygen and a preparation method thereof. The method for preparing the hollow carbon nanospheres co-doped with nitrogen and oxygen includes the following steps:

[0054] S11: Add 0.45g of Triton X-100 solution at a temperature of 2°C to 450g of deionized water with a temperature of 2°C, stir with a magnetic stirrer for 60 minutes and mix uniformly to form a diluted Triton X-100 solution;

[0055] S12: Add 2.2g of pyrrole with a temperature of 2°C and 2.8g of aniline with a temperature of 2°C to the diluted Triton X-100 solution prepared in the above step, and continue to stir for 30 minutes to make the pyrrole and aniline in the Triton X- Evenly distributed in 100 solution;

[0056] S13: Add a freshly prepared 60mL 1M ammonium persulfate solution to the step S12 solution, stir slightly for 30s, and then stand for reaction for 12h at an ambient temperature of 0°C;

[0057] S14: The product obtained in...

Embodiment 2

[0061] This embodiment provides a hollow carbon nanosphere co-doped with nitrogen and oxygen and a preparation method thereof. The method for preparing the hollow carbon nanospheres co-doped with nitrogen and oxygen includes the following steps:

[0062] S11: Add 0.6g of Triton X-100 solution with a temperature of 2°C into 500g of deionized water with a temperature of 2°C, stir with a magnetic stirrer for 60 minutes and mix well to form a diluted Triton X-100 solution;

[0063] S12: Add 2.0g of pyrrole with a temperature of 2°C and 2.4g of aniline with a temperature of 2°C into the diluted Triton X-100 solution prepared in the above step, and continue to stir for 30 minutes to make the pyrrole and aniline in the Triton X- Evenly distributed in 100 solution;

[0064] S13: Add the newly prepared 50mL 1M ammonium persulfate solution to the step S12 solution, stir slightly for 50s, and then stand for 8h at an ambient temperature of 3°C;

[0065] S14: The product obtained in step S13 is w...

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Abstract

The invention discloses nitrogen-oxygen co-doped hollow carbon nanospheres, a preparation method thereof, a supercapacitor electrode and a supercapacitor. The preparation method of the nitrogen-oxygenco-doped hollow carbon nanospheres comprises the steps as follows: pyrrole and aniline are subjected to a polymerization reaction in a water liquor containing a soft template, and a hollow carbon nanosphere precursor is obtained; the hollow carbon nanosphere precursor is washed, pulverization treatment, carbonization treatment and ammonia water activation treatment are performed, and the nitrogen-oxygen co-doped hollow carbon nanospheres are obtained. The nitrogen-oxygen co-doped hollow carbon nanospheres prepared with the preparation method have larger specific surface area, good wettabilityand high specific surface area utilization rate. The supercapacitor electrode and the supercapacitor comprise the nitrogen-oxygen co-doped hollow carbon nanospheres prepared with the method.

Description

Technical field [0001] The present invention relates to the technical field of electrode materials, in particular to a hollow carbon nanosphere co-doped with nitrogen and oxygen, and a preparation method and application thereof. Background technique [0002] At present, the earth is facing huge energy challenges. The continuous oil crisis and environmental problems have forced countries to start searching for new clean renewable energy. To solve these problems, energy storage and management devices play a key role. In recent years, supercapacitors have attracted great attention. As a new type of energy storage device, it has fast charge and discharge, high power density, pollution-free and excellent cycle stability, which makes it have broad application prospects in communication equipment, transportation, aerospace and other fields. [0003] Carbon materials are considered to be the most suitable ideal materials for industrialized supercapacitors. Carbon-based electrochemical c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15B82Y30/00B82Y40/00H01G11/24H01G11/30H01G11/36H01G11/38
CPCB82Y30/00B82Y40/00C01B32/15H01G11/24H01G11/30H01G11/36H01G11/38Y02E60/13
Inventor 邹继兆余良曾燮榕曾绍忠黎晓华姚跃超刘世钰涂文烜陈双双
Owner SHENZHEN UNIV
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