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Iron carbide-based composite material and preparation method thereof

A technology of iron carbide-based and composite materials, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of poor conductivity of iron-based nanomaterials, complex preparation methods, and easy agglomeration of nanocrystals, and achieves a favorable industrial scale. Production, increasing utility and versatility, promoting penetration effects

Pending Publication Date: 2022-08-02
RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to, aiming at the deficiencies in the prior art, provide a kind of iron carbide-based composite material and its preparation method, by coupling dopamine with iron source, adjust the ratio of deionized water and acetone, add initiator simultaneously, can Obtain iron-dopamine hybrid nano-microspheres, and orderly combine the iron source with the carbon matrix to enhance the electrical conductivity and chemical stability of the nano-microspheres, which solves the problem of poor electrical conductivity of the existing iron-based nanomaterials and the high-temperature calcination process Medium and nanocrystals are easy to agglomerate, and the preparation method is complicated, so it is not suitable for most iron-based composite materials

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  • Iron carbide-based composite material and preparation method thereof
  • Iron carbide-based composite material and preparation method thereof
  • Iron carbide-based composite material and preparation method thereof

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Embodiment 1

[0035] A preparation method of iron-dopamine composite material, comprising the following steps:

[0036] Weigh 20 mg of dopamine and dissolve in 5 mL of deionized water to obtain solution A; 20 mg of ferric acetylacetonate is dissolved in 8 mL of acetone to obtain solution B; after solution A and solution B are mixed uniformly, 40 mg of tris is added and stirred continuously. 12h, a black-purple turbid liquid was obtained; then centrifuged at a speed of 8000-10000r.p.m for 5-7min; then washed with ethanol 1-3 times (acetone can be dissolved in organic solvents such as ethanol, so it will not introduce Various solvents), and dried in an oven at 60 °C for 4 h to obtain a black-purple iron-dopamine hybrid composite.

Embodiment 2

[0038] A preparation method of iron-dopamine composite material, comprising the following steps:

[0039] Weigh 20 mg of dopamine and dissolve it in 5 mL of deionized water to obtain solution A; 20 mg of ferric acetylacetonate is dissolved in 8 mL of acetone to obtain solution B; after solution A and solution B are mixed uniformly, 40 mg of tris is added and stirred continuously. 12h, a black-purple turbid liquid was obtained; then centrifuged at a speed of 8000-10000r.p.m for 5-7min; then washed with ethanol 1-3 times (acetone can be dissolved in organic solvents such as ethanol, so it will not introduce Various solvents), dried in an oven at 80°C for 2 hours to obtain black-purple iron-dopamine hybrid composite microspheres; heat treatment of the dried iron-dopamine hybrid nanocomposite microspheres to obtain in-situ transformed iron-dopamine composite nanospheres Microspheres; wherein, the heat treatment is carbonization heat treatment, and the conditions are as follows: th...

Embodiment 3

[0041] A preparation method of an iron carbide-based composite material, comprising the following steps:

[0042] Weigh 10 mg of dopamine and dissolve it in 5 mL of deionized water to obtain solution A; 10 mg of ferric acetylacetonate is dissolved in 8 mL of acetone to obtain solution B; after solution A and solution B are mixed uniformly, 20 mg of tris is added and stirred continuously. 12h, a black-purple turbid liquid was obtained; then centrifuged at a speed of 8000-10000r.p.m for 5-7min; then washed with ethanol 1-3 times (acetone can be dissolved in organic solvents such as ethanol, so it will not introduce Various solvents), and then dried in an oven at 40 °C for 12 h to obtain iron-dopamine hybrid microspheres; heat treatment of the dried iron-dopamine hybrid nano-microspheres to obtain in-situ transformed iron carbide-based composite nano-microspheres; wherein , the heat treatment is carbonization heat treatment, and the conditions are as follows: the carbonization tr...

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Abstract

The invention belongs to the technical field of organic-inorganic hybrid materials, and particularly relates to an iron carbide-based composite material and a preparation method thereof.The preparation method comprises the following steps that a dopamine solution and an iron source solution are coupled, an initiator initiates dopamine polymerization, an iron source is wrapped in situ, and iron dopamine composite material nanometer microspheres are obtained; carrying out heat treatment by taking the nano-microspheres as a precursor to obtain an in-situ converted iron carbide-based composite nano-material; the iron carbide-based composite material is a nano-microsphere with a core-shell structure, a carbon matrix serves as a shell, metal ions containing an iron source serve as a core, and the nano-microsphere formed by orderly arranging iron carbide nano-particles and the carbon matrix is formed. According to the method, one-step stirring and dissolving are conducted through a coordination polymerization method, the iron dopamine composite nano-microspheres are obtained and further calcined, the iron dopamine composite nano-microspheres can be converted into the iron-based composite material in situ, the preparation process is simple, efficient and safe, the practicability and universality of the reaction are improved, and industrial large-scale production is facilitated.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic hybrid materials, in particular to an iron carbide-based composite material and a preparation method thereof. Background technique [0002] Organic-inorganic hybrid materials have the advantages of tunable structure, composition, and morphology, low cost, and biocompatibility, and are widely used in electrocatalysis, energy, and optoelectronics. In organic-inorganic hybrid materials, components of different scales and characteristics are combined to form complex and diverse composite materials, which can be used as precursors of high-performance materials. After subsequent processing, new high-performance materials can be obtained, and they can also be directly used as catalysts. Precise regulation of active sites. Therefore, designing and preparing new organic-inorganic hybrid materials, and studying the laws of their structure and properties changes, can provide more possibilities for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36
CPCH01M4/364Y02E60/50
Inventor 杨勇秦依钒晏萌
Owner RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN
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