Graphene modified energy storage material and preparation method thereof

A technology of graphene modification and energy storage materials, which is applied in the direction of heat exchange materials, inorganic material magnetism, chemical instruments and methods, etc., can solve the problems of high production cost and inability to meet industrial production, and achieve environmental protection pressure. Effect of improved range and field, good magnetic permeability and electrical conductivity

Inactive Publication Date: 2017-12-22
乐福之家纳米材料有限责任公司
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Problems solved by technology

[0004] Graphene is widely used in phase change energy storage materials, but most graphene energy storage materials have the limitation of high production cost in the preparation process, so they cannot meet the requirements of industrial production

Method used

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Embodiment

[0028] The object of the present invention is to overcome the defects existing in the prior art, and provide a graphene modified energy storage material and a preparation method thereof, which have a simple process and low cost, and can satisfy industrialized production.

[0029] For this reason, technical scheme of the present invention is the preparation method of graphene modified energy storage material, comprises the following steps:

[0030] Step 1: Put the nitride into the tube furnace, evacuate the tube furnace, and then heat the tube furnace under a nitrogen atmosphere. The heating temperature is 720°C, the holding time is 20 hours, and the heating rate is 20°C / min, holding temperature is 720°C, made of Mn 2 N;

[0031] Step 2: According to the chemical formula Mn 3 Each stoichiometric number in CuN is weighed, Mn2N and Cu powder are weighed, and then the two are fully mixed by mechanical ball milling, and the mechanical ball milling time is 20 hours;

[0032] Step...

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PUM

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Abstract

The invention relates to a graphene modified energy storage material comprising the following components in percentage by mass: 0.5%-15% of graphene, 70%-90% of phase-change materials and 10%-20% of Mn3CuN, and the prepared Mn3CuN/graphene/phase-change modified energy storage material has the phase change latent heat of 198J/g and the heat diffusion coefficient of larger than 900mm<2>/s. The invention further relates to a preparation method of the graphene modified energy storage material, and the preparation method is simple in technological process, low in cost and suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of graphene application, in particular to a graphene-modified energy storage material and a preparation method thereof. Background technique [0002] Graphene is a carbon atom with sp 2 The honeycomb planar film formed by hybridization is a quasi-two-dimensional material with only one atomic layer thickness, so it is also called single atomic layer graphite. The common powder production methods of graphene are mechanical exfoliation method, redox method, and SiC epitaxial growth method, and the thin film production method is chemical vapor deposition method. Due to its very good strength, flexibility, electrical conductivity, thermal conductivity, and optical properties, it has been greatly developed in the fields of physics, materials science, electronic information, computers, and aerospace. [0003] Phase change materials refer to substances that change the state of matter and provide latent heat as the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06H01B1/04H01F1/01
Inventor 赵建东张强赵正琴刘洪曹晓燕
Owner 乐福之家纳米材料有限责任公司
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