Method for preparing super-microporous flexible carbon cloth and product thereof and application

An ultra-microporous, flexible technology, used in textiles and papermaking, heating/cooling fabrics, fabric surface trimming, etc., can solve the problems of limited commercial application, complex preparation process, complex preparation process, etc., to achieve excellent cycle performance, synthesis Simple method, cheap method

Active Publication Date: 2016-07-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used catalysts are mainly based on noble metals such as Pt and Ru, but their commercial application is greatly limited due to their high cost and limited reserves in nature.
Even though a large number of base metal-based catalysts (such as MoS2: J.Am.Chem.Soc., 2005, 127; FeP: Chem.Commun., 2013, 49, etc.) appeared in the later stage, due to the poisonous raw materials and complex preparation process, making the preparation of efficient and environmentally friendly catalysts remains a great challenge
The emergence of metal-free catalysts has solved the problem of complex preparation process and toxic raw materials to a certain extent, but these catalysts often require complicated sample preparation processes, adding binders, and high-temperature treatment in the early stage to improve catalytic performance through doping of heteroatoms. performance, there are no reports on pure carbon materials used for hydrogen production

Method used

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  • Method for preparing super-microporous flexible carbon cloth and product thereof and application
  • Method for preparing super-microporous flexible carbon cloth and product thereof and application
  • Method for preparing super-microporous flexible carbon cloth and product thereof and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The commercial hydrophobic carbon cloth was washed with deionized water and calcined to 1000 °C in nitrogen for 4 h. SEM image see figure 1 . We can see the obvious channel structure. With the scanning electron microscope figure of comparative example 1 such as Figure 11 As shown, it can be seen that the carbon cloth has no pore structure before calcination, and the ultra-microporous flexible carbon cloth obtained after calcination, the micropores and ultra-micropores on the surface are conducive to the transport of electrolyte. like figure 2 It can be obtained that the prepared ultramicroporous flexible carbon cloth has the characteristics of large-scale synthesis, and has good flexibility and can be bent at various angles. like image 3 It can be obtained that the prepared ultramicroporous flexible carbon cloth exhibits superhydrophilic properties, and the contact angle with water is 0 degree. Nitrogen adsorption and desorption curve see Figure 4 , it can be...

Embodiment 2

[0045] The commercial hydrophobic carbon cloth was washed with deionized water and calcined to 1000 °C in argon for 1 h. Nitrogen adsorption and desorption curve see Image 6 , mainly micropores, the specific surface can reach 500m 2 / g. For the pore size distribution see Figure 7 It can be seen that there are a large number of micropores and ultramicropores (<0.7nm pores), and such a pore structure has a great contribution to the capacitance. It shows that the surface area and pore structure can be adjusted by adjusting the calcination time and calcination gas.

Embodiment 3

[0047] The commercial hydrophobic carbon cloth was washed with deionized water, and calcined at 800 °C for 1 h in a nitrogen:oxygen ratio of 100:1. Nitrogen adsorption and desorption curve see Figure 8 , it can be seen that it is mainly micropores, and the specific surface can reach 126m 2 g. For the pore size distribution see Figure 9 , no ultramicropores (pores < 0.7 nm) were seen. It shows that the surface area and pore structure can be adjusted by adjusting the calcination temperature and calcination gas.

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Abstract

The invention discloses a method for preparing super-microporous flexible carbon cloth.Carbon cloth serves as a raw material and is calcined at high temperature in activators, and the super-microporous flexible carbon cloth is obtained.The calcination temperature is 400-1,500 DEG C, and calcination time is 1-24 h.The activators are nitrogen and oxygen, and the volume ratio of nitrogen to oxygen is 100:(0.5-2).The invention further discloses the super-microporous flexible carbon cloth and application of the super-microporous flexible carbon cloth to a flexible all-solid-state capacitor and water electrolysis hydrogen making.According to the technical scheme, a calcination method is utilized for the first time, no reagent is needed, and the synthesis method is simple, environmentally friendly and beneficial for large-scale production; the prepared super-microporous flexible carbon cloth has a large specific area, high-proportion micropores, good electric conductivity and good flexibility and super hydrophilicity.

Description

technical field [0001] The invention relates to the field of carbon cloth preparation, in particular to a method for preparing ultra-microporous flexible carbon cloth and its products and applications. Background technique [0002] With the increasing shortage of petroleum resources and the pollution of the environment by the exhaust emissions of internal combustion engines burning petroleum, people are studying various energy storage and conversion devices. With the rapid development of various curling devices and portable electronic devices, such as mobile phones and computers, advanced flexible energy storage is urgently needed. Flexible supercapacitors have higher energy density, faster charge and discharge rates, and longer service life than traditional physical capacitors, so they have become a research hotspot. However, the preparation of supercapacitors that can not only meet the actual needs, but also have the characteristics of cheapness, flexibility, light weight...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06C7/04H01G11/24
CPCY02E60/13D06C7/04H01G11/24
Inventor 王勇王海燕
Owner ZHEJIANG UNIV
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