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Mesoporous hollow carbon micron cage material, and preparation method and application thereof

A hollow and mesoporous technology, applied in the preparation/purification of carbon, hybrid capacitor electrodes, etc., can solve problems such as environmental pollution and human health threats, achieve high purity, avoid pollution and threats to the human body, and low energy consumption Effect

Active Publication Date: 2020-12-01
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current preparation of porous hollow carbon materials often requires the use of SiO 2 as a template, remove SiO 2 Formwork requires the use of hydrofluoric acid, which pollutes the environment and poses a threat to human health

Method used

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  • Mesoporous hollow carbon micron cage material, and preparation method and application thereof
  • Mesoporous hollow carbon micron cage material, and preparation method and application thereof
  • Mesoporous hollow carbon micron cage material, and preparation method and application thereof

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preparation example Construction

[0028] A method for preparing a mesoporous hollow carbon micro-cage material of the present invention comprises the following steps:

[0029] (1) 1 ~ 2mol FeCl 3 ·6H 2 Dissolve O in 25mL water to obtain solution A; dissolve 5.4 mol NaOH in 25mL water to obtain solution B; mix solution A and solution B, and react at 100°C for 24-96 hours to obtain precipitate A;

[0030] (2) Pour 0.2g~0.6g of precipitate A into a mixed solution of 10mL water and 10mL absolute ethanol, add 0.15g block copolymer F127, 0.15g dopamine hydrochloride, 0.5~1.5mL of 1,3, 5-Mesitylene, 0.4mL ammonia water, stirred and reacted at room temperature for 1-3 hours, washed and dried the product, and obtained brown precipitate B;

[0031] (3) Place the obtained precipitate B in a corundum porcelain boat and heat-treat it under an argon atmosphere at a temperature of 500-900°C and a heating rate of 2-5°C min -1 , The holding time is 1 to 4 hours.

[0032] (4) The obtained product was washed with dilute HCl,...

Embodiment 1

[0034] A method for preparing a mesoporous hollow carbon micro-cage material, comprising the following steps:

[0035] (1) 1mol FeCl 3 ·6H 2 O was dissolved in 25mL water to obtain solution A; 5.4mol NaOH was dissolved in 25mL water to obtain solution B; solution A and solution B were mixed and reacted at 100°C for 24 hours to obtain precipitate A;

[0036] (2) Pour 0.2g of precipitate A into a mixed solution of 10mL of water and 10mL of absolute ethanol, add 0.15g of block copolymer F127, 0.15g of dopamine hydrochloride, and 0.5mL of 1,3,5- mesitylene , 0.4mL ammonia water, stirred and reacted at room temperature for 1 hour, the product was washed and dried, and brown precipitate B was obtained;

[0037] (3) Place the obtained precipitate B in a corundum porcelain boat and heat-treat it under an argon atmosphere. The heat-treatment temperature is 500°C, and the heating rate is 2°C min -1 , holding time is 1h.

[0038] (4) The obtained product was washed with dilute HCl, c...

Embodiment 2

[0040]A method for preparing a mesoporous hollow carbon micro-cage material, comprising the following steps:

[0041] (1) 1mol FeCl 3 ·6H 2 O was dissolved in 25mL water to obtain solution A; 5.4mol NaOH was dissolved in 25mL water to obtain solution B; solution A and solution B were mixed and reacted at 100°C for 24 hours to obtain precipitate A;

[0042] (2) Pour 0.2g of precipitate A into a mixed solution of 10mL of water and 10mL of absolute ethanol, add 0.15g of block copolymer F127, 0.15g of dopamine hydrochloride, 1mL of 1,3,5-mesitylene, 0.4mL ammonia water, stirred and reacted at room temperature for 1 hour, the product was washed and dried, and brown precipitate B was obtained;

[0043] (3) Place the obtained precipitate B in a corundum porcelain boat and heat-treat it under an argon atmosphere. The heat-treatment temperature is 500°C, and the heating rate is 2°C min -1 , holding time is 1h.

[0044] (4) The obtained product was washed with dilute HCl, centrifuge...

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Abstract

The invention provides a preparation method of a mesoporous hollow carbon micron cage supercapacitor electrode material. The preparation method comprises the following steps: by taking Fe2O3 as a hardtemplate, F127 as a soft template and dopamine hydrochloride as a carbon source, stirring and polymerizing at normal temperature, centrifuging, washing and drying the obtained product, and calciningand carbonizing for 1-4 hours at 500-900 DEG C in an inert atmosphere to obtain the mesoporous hollow carbon micron cage material. According to the method, the mesoporous hollow carbon micron cage hasrich mesoporous structures and hollow structures, an effective channel is provided for ion transmission and diffusion, and rapid electrochemical response can be ensured. The material shows good supercapacitor performance as an electrode material.

Description

technical field [0001] The invention belongs to the field of supercapacitor electrode materials, in particular to a mesoporous hollow carbon micron cage material and its preparation method and application. Background technique [0002] Since entering the 21st century, the continuous acceleration of social and economic development has made energy shortages and environmental crises more and more serious, and we have to look for new alternative energy sources. Many clean renewable energy sources, especially wind and solar, have the disadvantage of being intermittent. As an efficient and clean new storage device, supercapacitor has the advantages of high power density, fast charge / discharge rate and good cycle stability, and has received extensive attention and research, and has broad development prospects in various related fields. The development of electrode materials should be one of the key approaches to the research and development of supercapacitors. Carbon materials hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/32C01B32/05
CPCH01G11/32H01G11/24C01B32/05Y02E60/13
Inventor 林营胡帆帆杨海波文博张明辉
Owner SHAANXI UNIV OF SCI & TECH
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