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ZIF-9-based porous carbon/carbon fiber composite material and preparation method thereof

A technology of ZIF-9 and composite materials, applied in nanotechnology for materials and surface science, fuel cells, electrode carriers/collectors, etc., can solve problems such as poor conductivity and poor stability, and achieve high conductivity and high Porosity, solve the effect of low utilization rate

Active Publication Date: 2019-01-11
清创人和生态工程技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at the problems of poor electrical conductivity and poor stability of existing composite carbon materials, and provides a ZIF-9 with high-density arrangement grown on carbon fibers of carbon fiber fabrics, and then undergoes pyrolysis to form ZIF-9-based porous carbon with high-density arrangement / carbon fiber composite material, and provide a kind of preparation method of ZIF-9 base porous carbon / carbon fiber composite material

Method used

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  • ZIF-9-based porous carbon/carbon fiber composite material and preparation method thereof
  • ZIF-9-based porous carbon/carbon fiber composite material and preparation method thereof
  • ZIF-9-based porous carbon/carbon fiber composite material and preparation method thereof

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Embodiment 1

[0031] Implement a kind of preparation method of ZIF-9 base porous carbon / carbon fiber composite material, this preparation method is carried out in order according to the following steps:

[0032] (1) Fiber surface pretreatment of carbon fiber fabrics:

[0033] The carbon fiber fabric was ultrasonically cleaned in isopropanol for 30 min, then dried in an air atmosphere at 80 °C, and heat-treated at 600 °C in an Ar atmosphere for 6 h; then, it was treated with concentrated nitric acid at 150 °C for 12 h in a Rinse with deionized water until neutral, then dry; finally, soak in ethylenediamine at 50°C for 24 hours, and dry for later use;

[0034] (2) Preparation of ZIF-9 / carbon fiber three-dimensional composite material:

[0035]Weigh 0.6 g Co(NO 3 ) 2 •6H 2 O (dissolved in 40 mL N,N-dimethylformamide (DMF) (solution Ⅰ), weighed 0.52g benzimidazole (BIM) and dissolved in 20 mL N,N-dimethylformamide (DMF) In (solution II), solution I was poured into the autoclave, soaked the...

Embodiment 2

[0039] Implement a kind of preparation method of ZIF-9 base porous carbon / carbon fiber composite material, this preparation method is carried out in order according to the following steps:

[0040] (1) Fiber surface pretreatment of carbon paper:

[0041] Carbon paper with a carbon fiber diameter of 10 μm was ultrasonically cleaned in isopropanol for 60 min, then dried in an air atmosphere at 80 °C, N 2 Heat treatment at 600°C for 10 h in atmospheric atmosphere; then, treat with concentrated nitric acid at 150°C in an autoclave for 24 h, rinse with deionized water until neutral, and dry; finally, soak in hydrazine at 50°C for 24 h , dried for later use;

[0042] (2) Preparation of ZIF-9 / carbon fiber three-dimensional composite material:

[0043] Weigh 1.2 g CoCO 3 •6H 2 O was dissolved in 40 mL of nitrogen-methylpyrrolidone (solution Ⅰ), 1.04 g of benzimidazole (BIM) was weighed and dissolved in 20 mL of nitrogen-methylpyrrolidone (solution Ⅱ), solution Ⅰ was poured into th...

Embodiment 3

[0049] Implement a kind of preparation method of ZIF-9 base porous carbon / carbon fiber composite carbon material, this preparation method is carried out in sequence according to the following steps:

[0050] (1) Fiber surface pretreatment of carbon felt:

[0051] Carbon felt with a carbon fiber diameter of 1 μm was ultrasonically cleaned in isopropanol for 5 min, then dried in an air atmosphere at 80°C, N 2 Heat treatment at 600°C for 6 h in atmospheric atmosphere; then, treat with concentrated nitric acid at 150°C in an autoclave for 12 h, rinse with deionized water until neutral, and dry; finally, soak in triethanolamine at 50°C for 24 h , dried for later use;

[0052] (2) Preparation of ZIF-9 / carbon fiber three-dimensional composite material:

[0053] Weigh 0.9 g CoSO 4 •7H 2 O was dissolved in 40 mL ethanol (solution Ⅰ), 0.78 g benzimidazole (BIM) was weighed and dissolved in 20 mL ethanol (solution Ⅱ), solution Ⅰ was poured into the autoclave, and the pretreated The ...

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Abstract

A ZIF-9-based porou carbon / carbon fiber composite material and preparation method thereof belongs to the technical field of a preparation method of a metal nanoparticle doped porous carbon / carbon fiber conductive composite material, can solve the problems of poor conductivity and poor stability of the existing composite carbon material, wherein the carbon fiber of a carbon fiber fabric is taken asa growth substrate, and high-density arranged ZIF is grown on the growth substrate; 9, carbonize at high temperature in an inert gas atmosphere to generate porous carbon / carbon fib composite material, and that invention realizes a ZIF-9-based porous carbon and conductive substrate integrated conductive network structure, lithium sulfide batteries, sodium sulfide batteries, lithium-air batteries and fuel cells, electrocatalysis and other fields have a wide range of applications.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of metal nanoparticle-doped porous carbon / carbon fiber conductive composite materials, and specifically relates to a ZIF-9-based porous carbon / carbon fiber composite carbon material and a preparation method thereof, specifically growing on carbon fibers of carbon fiber fabrics The densely arranged ZIF-9 is then pyrolyzed to generate a highly densely arranged ZIF-9-based porous carbon / carbon fiber composite. Background technique [0002] Metal-organic framework materials MOFs are formed by the construction of organic ligands and inorganic metal or metal-containing cluster sites. They have the characteristics of infinite extension of uniform structure and can be adjusted in terms of structure and function. One of the research fields; based on the geometric pattern of coordination between organic ligands and metals or metal clusters, the structure of MOFs can be purposefully constructed. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/66H01M4/88H01M8/0241B82Y30/00
CPCB82Y30/00H01M4/625H01M4/626H01M4/661H01M4/663H01M4/8803H01M8/0241Y02E60/10Y02E60/50
Inventor 刘世斌周娴娴刘盼盼陈良李瑜段东红郝晓刚
Owner 清创人和生态工程技术有限公司
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