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Fluorinated graphene, and preparation method and application thereof

A technology of fluorinated graphene and graphene, applied in the field of materials, can solve the problems of high process cost and low fluorinated quality, and achieve the effects of improved reaction efficiency, high fluorinated degree, and high fluorinated structure

Inactive Publication Date: 2019-01-11
HUBEI ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The first object of the present invention is to provide a kind of preparation method of fluorinated graphene, this preparation method uses F 2 The mixed gas with inert gas can fluorinate and modify the reduced graphene oxide, which improves the safety, stability and controllability of the process, and effectively reduces the high-purity F 2 The corrosion of fluorination equipment solves the problems of high process cost and low fluorination quality

Method used

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  • Fluorinated graphene, and preparation method and application thereof
  • Fluorinated graphene, and preparation method and application thereof
  • Fluorinated graphene, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Preparation of reduced graphene: Weigh 100g of LDGO2211 powder and put it into a quartz tube furnace, seal and evacuate to 0.1Mpa, set the program to raise the temperature to 600°C at 10°C / min, keep it warm for 2 hours, and cool down to room temperature naturally at the end of the program , that is, the wrinkled spherical reduced graphene is obtained.

[0049] Preparation of fluorinated graphene: Take 30 g of the above-mentioned reduced graphene with wrinkled spherical structure and import it into a closed fluorinated reaction kettle. Under the vacuum condition of 0.1Mpa, the temperature is raised to 200°C at a rate of 5°C / min, and the temperature is kept for 3 hours. Impurity removal and purification treatment; pass through 3% F 2 / N 2 The mixed gas is heated to 350°C at a rate of 10°C / min, kept for 20 hours, and naturally cooled to room temperature to obtain fluorinated graphene.

Embodiment 2

[0051] Preparation of reduced graphene: Weigh 100g of LDGO2211 powder and put it into a quartz tube furnace, seal it and evacuate it to 0.1Mpa, set the program to raise the temperature to 800°C at 10°C / min, keep it warm for 2 hours, and cool down to room temperature naturally after the end of the program , that is, the wrinkled spherical reduced graphene is obtained.

[0052] Preparation of fluorinated graphene: Take 30 g of the above-mentioned reduced graphene with wrinkled spherical structure and import it into a closed fluorinated reaction kettle. Under the vacuum condition of 0.1Mpa, the temperature is raised to 200°C at a rate of 5°C / min, and the temperature is kept for 3 hours. Impurity removal and purification treatment; pass through 1% F 2 / N 2 The mixed gas is heated up to 300°C at a rate of 10°C / min, kept for 20 hours, and cooled naturally to room temperature to obtain fluorinated graphene.

Embodiment 3

[0054] Preparation of reduced graphene: Weigh 100g of LDGO2211 powder and put it into a quartz tube furnace, seal and evacuate to 0.1Mpa, set the program to raise the temperature to 600°C at 10°C / min, keep it warm for 5 hours, and cool down to room temperature naturally at the end of the program , that is, the wrinkled spherical reduced graphene is obtained.

[0055] Preparation of fluorinated graphene: Take 30 g of the above-mentioned reduced graphene with wrinkled spherical structure and import it into a closed fluorinated reaction kettle. Under the vacuum condition of 0.1Mpa, the temperature is raised to 200°C at a rate of 5°C / min, and the temperature is kept for 3 hours. Impurity removal purification treatment; pass through, 5% F 2 / N 2 The mixed gas is heated up to 450°C at a rate of 10°C / min, kept for 30 hours, and cooled naturally to room temperature to obtain fluorinated graphene.

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Abstract

The invention provides a fluorinated graphene, and a preparation method and an application thereof. The preparation method of the fluorinated graphene is characterized in that reduced graphene oxide and a fluorinating agent undergo a fluorination reaction at 280-550 DEG C; and the fluorinating agent is a mixed gas of F2 and an inert gas, and the volume concentration of fluorine in the mixed gas is1-10%, preferably 3-10%, more preferably 3-8% and best preferably 3-5%. The reduced graphene oxide is fluorinated and modified with the mixed gas of F2 and the inert gas, so the safety, the stabilityand the controllability of the process are improved, the corrosion of high-purity F2 to a fluorination device is effectively reduced, and the problems of high cost and low fluorination quality in theprior art are solved.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a fluorinated graphene and its preparation method and application. Background technique [0002] As a derivative of graphene, graphene fluoride is a product of fluorinated or partially fluorinated graphene, which combines the performance advantages of graphene and fluorinated graphite, such as high strength, high Young's modulus, specific surface area Large, excellent lubricity, hydrophobicity and wear resistance, and wide band gap. Fluorinated graphene with different sizes, layers, degrees of fluorination and functional groups exhibits different properties in terms of optics, electricity, heat and interface, so it can be widely used in solid lubricant materials, antifouling and anticorrosion materials, lithium-fluorine Carbon dioxide battery positive electrode materials, superhydrophobic materials and wear-resistant materials and other fields, and has potential application va...

Claims

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Application Information

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IPC IPC(8): C01B32/194H01M4/583C10M125/02C10N30/04
CPCC01B32/194C10M125/02C10M2201/042C10N2030/04H01M4/5835Y02E60/10
Inventor 杜军郭春艳陈武峰梁华王锋丁瑜覃彩芹
Owner HUBEI ENG UNIV
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