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Heteroatom-doped graphene nanofiber non-woven fabric and preparation method thereof

A technology of graphene fiber and nanofiber, which is applied in the direction of fiber raw material processing, fiber chemical characteristics, synthetic cellulose/non-cellulose material pulp/paper, etc., can solve problems that have not been reported before, and achieve the goal of maintaining mechanical stability and Flexibility, increased specific surface area, wide application prospects

Active Publication Date: 2021-08-06
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of heteroatom-doped graphene nanofiber nonwovens has not been reported

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Heteroatom-doped graphene nanofiber non-woven fabric and preparation method thereof
  • Heteroatom-doped graphene nanofiber non-woven fabric and preparation method thereof
  • Heteroatom-doped graphene nanofiber non-woven fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A heteroatom-doped graphene nanofiber non-woven fabric, its preparation method may further comprise the steps:

[0022] (1) The graphene oxide / water solution with a concentration of 10 mg / mL is used as the spinning solution, wherein 10% polyaniline is added in a mass fraction, and saturated potassium chloride methanol solution is used as a coagulation bath for continuous wet spinning. Dry the obtained composite fiber in an oven at a temperature not higher than 70°C for 12 hours.

[0023] (2) Disperse the dried composite fiber in a 3:1 mixture of ethanol and water, and use a mixer to crush it and mix it evenly to obtain a suspension of the composite fiber, which is filtered and deposited through a filter screen, and obtained on the filter screen. Composite fiber non-woven fabric, the composite fiber non-woven fabric was washed three times with ethanol, and dried at 80°C.

[0024] (3) the dried composite fiber non-woven fabric in saturated FeCl 3 Soak in medium for 6h, ...

Embodiment 2

[0027] A heteroatom-doped graphene nanofiber non-woven fabric, its preparation method may further comprise the steps:

[0028] (1) Graphene oxide / N with a concentration of 10 mg / mL, N-dimethylformamide solution is the spinning solution, wherein adding hexachlorocyclotriphosphazene with a mass fraction of 10%, and ethyl acetate as the coagulation bath , for continuous wet spinning. Dry the obtained composite fiber in an oven at a temperature not higher than 70°C for 12 hours.

[0029] (2) Disperse the dried composite fiber in a 3:1 mixture of ethanol and water, and use a mixer to crush it and mix it evenly to obtain a suspension of the composite fiber, which is filtered and deposited through a filter screen, and obtained on the filter screen. Composite fiber non-woven fabric, the composite fiber non-woven fabric was washed three times with ethanol, and dried at 80°C.

[0030] (3) the dried composite fiber non-woven fabric in saturated FeCl 3 Soak in medium for 6h, dry to obt...

Embodiment 3

[0034] A heteroatom-doped graphene nanofiber non-woven fabric, its preparation method may further comprise the steps:

[0035] (1) The graphene oxide / water solution with a concentration of 10 mg / mL is used as the spinning solution, wherein 5% methionine is added in a mass fraction, and saturated potassium chloride methanol solution is used as a coagulation bath for continuous wet spinning . Dry the obtained composite fiber in an oven at a temperature not higher than 70°C for 12 hours.

[0036] (2) Disperse the dried composite fiber in a 3:1 mixture of ethanol and water, and use a mixer to crush it and mix it evenly to obtain a suspension of the composite fiber, which is filtered and deposited through a filter screen, and obtained on the filter screen. Composite fiber non-woven fabric, the composite fiber non-woven fabric was washed three times with ethanol, and dried at 80°C.

[0037] (3) the dried composite fiber non-woven fabric in saturated FeCl 3 Soak in medium for 6h, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a heteroatom-doped graphene nanofiber non-woven fabric and a preparation method thereof. The heteroatom-doped graphene nanofiber non-woven fabric has a net-shaped structure formed by mutually fusing and overlapping graphene fibers. The non-woven fabric is prepared by the following steps: performing mixed wet spinning on graphene oxide and a heteroatom compound to obtain heteroatom-containing composite graphene fibers; forming a mutually lapped network skeleton through melting and recasting by utilizing relatively strong interaction among fibers; and soaking the above in ferric trichloride, and carrying out heat treatment to obtain the heteroatom-doped graphene nanofiber non-woven fabric. The specific surface area and active sites of a communicated network structure formed by heteroatom-doped nanofibers are remarkably increased, and meanwhile, the composite material has relatively high conductivity and flexibility, can be used as a flexible electrode material, and has very wide application prospects in the fields of energy sources, electrons, catalysis, biological medicines and the like.

Description

technical field [0001] The invention relates to a graphene nanofiber nonwoven fabric and a preparation method thereof. Background technique [0002] Graphene has properties such as high flexibility, high conductivity, high specific surface area, and high temperature resistance. Combustible materials, absorbing materials, etc., so it has received extensive attention. Graphene fiber non-woven fabric is a new type of non-woven fabric composed of graphene fibers. After the fibers are fused, they interact strongly and have low contact resistance. Therefore, graphene fiber non-woven fabric has excellent mechanical stability, flexibility, and excellent electrical conductivity. As a potential high-performance electrode material, it has broad application prospects in the field of flexible energy storage devices. [0003] However, the structure of graphene fibers is relatively dense, the active surface area is small, and the lack of functional groups on the graphene sheets, the lack...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D21H27/00D21H13/50D21H17/06D21H17/66D21H25/06D01F9/12D01F1/10
CPCD21H27/00D21H13/50D21H17/06D21H17/66D21H25/06D01F9/12D01F1/10Y02E60/13
Inventor 薛江丽高召顺茹亚东左婷婷肖立业韩立
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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