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Iron oxide nano-particle/graphene-polyimide-based carbon aerogel composite material and preparation method thereof

A polyimide-based carbon, iron oxide nanotechnology, applied in electrical components, hybrid capacitor electrodes, battery electrodes, etc., can solve the problems of large surface energy agglomeration, limited performance, etc., to achieve excellent electrical conductivity, improve detection performance, The effect of high porosity

Inactive Publication Date: 2016-01-13
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, iron oxide nanoparticles are easy to agglomerate due to their large surface energy, which greatly limits their performance.

Method used

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  • Iron oxide nano-particle/graphene-polyimide-based carbon aerogel composite material and preparation method thereof
  • Iron oxide nano-particle/graphene-polyimide-based carbon aerogel composite material and preparation method thereof
  • Iron oxide nano-particle/graphene-polyimide-based carbon aerogel composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] This embodiment includes the following steps:

[0030] The potassium hydroxide-activated graphene-polyimide-based carbon airgel was prepared using the method described in the inventor's Chinese patent application 201510442266.6, which is denoted as G-PIbasedCA.

[0031] Take 808mg of ferric nitrate nonahydrate and 300mg of urea and dissolve them in 40mL of N,N - In dimethylformamide, put 50 mg of the prepared carbon aerogel in the iron salt solution and let it stand for 1 hour. The iron salt solution added with carbon aerogel was poured into a 100mL hydrothermal kettle, and the hydrothermal kettle was placed in a blast oven at 120°C for reaction for 12h. After the reaction, the obtained iron oxide nanoparticles / graphene-polyimide-based carbon airgel composite was cleaned with deionized water and ethanol, and then dried in an oven at 100°C. In order to perfect the crystal form of iron oxide nanoparticles, the dried iron oxide nanoparticles / graphene-polyimide-based carb...

Embodiment 2

[0033] This embodiment includes the following steps:

[0034] The potassium hydroxide-activated graphene-polyimide-based carbon airgel was prepared using the method described in the inventor's Chinese patent application 201510442266.6, which is denoted as G-PIbasedCA.

[0035]Take 324mg of anhydrous ferric chloride and 300mg of urea and dissolve them in 40mL of N,N - In dimethylformamide, put 50 mg of the prepared carbon aerogel in the iron salt solution and let it stand for 1 hour. The iron salt solution added with carbon aerogel was poured into a 100mL hydrothermal kettle, and the hydrothermal kettle was placed in a blast oven at 120°C for reaction for 12h. After the reaction, the obtained iron oxide nanoparticles / graphene-polyimide-based carbon airgel composite was cleaned with deionized water and ethanol, and then dried in an oven at 100°C. In order to perfect the crystal form of iron oxide nanoparticles, the dried iron oxide nanoparticles / graphene-polyimide-based carbon...

Embodiment 3

[0037] As a control experiment, in the absence of potassium hydroxide-activated graphene-polyimide-based carbon airgel, 808 mg of ferric nitrate nonahydrate and 300 mg of urea were dissolved in 40 mL of N,N - in dimethylformamide, then pour this solution into a 50mL hydrothermal kettle, and place this hydrothermal kettle in a blast oven at 120°C for reaction for 12h. After the reaction finished, the obtained product was washed with deionized water and ethanol, and then dried in an oven at 100°C. In order to perfect the crystal form of iron oxide nanoparticles, the dried iron oxide nanoparticles were placed in a tube furnace and heat-treated at 600 °C for 2 h in a nitrogen atmosphere to finally obtain iron oxide nanoparticles, denoted as Fe 2 o 3 .

[0038] In the electrochemical test, a three-electrode test system was adopted, the prepared hybrid material modified platinum / carbon electrode was used as the working electrode, the saturated calomel electrode was used as the ref...

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Abstract

The invention belongs to the technical field of transition metal oxide-carbon aerogel, and particularly discloses an iron oxide nano-particle / graphene-polyimide-based carbon aerogel composite material and a preparation method thereof. The composite material is formed by evenly loading iron oxide nano-particles on graphene-polyimide-based carbon aerogel. The method comprises the following preparation step: carrying out in-situ growth of the iron oxide nano-particles on the graphene-polyimide-based carbon aerogel activated by potassium hydroxide through a one-step solvothermal method. The method disclosed by the invention is free of use of a toxic reagent, namely formaldehyde; and the prepared iron oxide nano-particle / graphene-polyimide-based carbon aerogel composite material has the advantages of small iron oxide nano-particles, uniform distribution, high porosity, high specific surface area, high conductivity, stable physical and chemical properties and the like, and can be used for preparing a high-sensitivity biosensor, a high-performance adsorption material and ideal electrode materials for new energy devices of a super capacitor, a lithium-ion battery and the like.

Description

technical field [0001] The invention belongs to the technical field of transition metal oxide-carbon airgel, and in particular relates to an iron oxide nanoparticle / graphene-polyimide-based carbon airgel composite material and a preparation method thereof. Background technique [0002] Due to its high porosity, light weight, large specific surface area, easy to adjust pore structure, good stability, and high conductivity, carbon aerogels are widely used as carrier materials, adsorption materials, and various electrode materials. Hotspots for future research. In our research, graphene-polyimide-based carbon airgel with high specific surface area has been prepared (patent 201510442266.6). [0003] Iron oxide nanoparticles have the advantages of being non-toxic, environmentally friendly, easy to prepare, good catalytic performance, and high theoretical specific capacity. However, iron oxide nanoparticles are easy to agglomerate due to their large surface energy, and this aggl...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01G11/30C01B31/02C01B31/04
CPCH01G11/30H01M4/362Y02E60/10Y02E60/13
Inventor 刘天西张由芳樊玮鄢家杰左立增黄云鹏张龙生郜伟
Owner FUDAN UNIV
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