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Novel graphene heating material

A technology for heating materials and graphene, which is applied in the field of materials, can solve the problems of inferior electrical properties of graphene, unsatisfactory electrical properties, and large longitudinal resistivity, and achieve the effects of low cost, short preparation cycle, and reduced resistivity

Inactive Publication Date: 2018-03-20
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene oxide has many functional groups attached to its surface, even if it is finally reduced with a chemical solvent, its electrical performance is far inferior to that of graphene.
[0004] Graphene is a zero-bandgap semiconductor material, but because graphene film is a layered structure, its interface resistance is relatively large, and the electron transmission barrier between graphene sheets is relatively high, resulting in a large longitudinal resistivity and poor electrical performance. not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step (1). With 9.7mg FeCl 3 Dissolve in 100mL EG to prepare 6mmol / L FeCl 3 solution.

[0044] Step (2). 0.25g AgNO 3 Dissolve in 1.25g EG and mix well.

[0045] Step (3). Dissolve 0.2g of PVP in 1.25g of EG and mix well.

[0046] Step (4). Get 0.34g 6mmol / L FeCl 3 solution.

[0047] Step (5). Add step (2), step (3) and step (4) to the Erlenmeyer flask in sequence, mix well, put the Erlenmeyer flask into an oven at 110° C. for 12 hours.

[0048] Step (6). Take out the Erlenmeyer flask, let it stand, and remove the waste liquid in the upper layer.

[0049] Step (7). The silver nanowire precipitate obtained in step (6) is washed with deionized water, left to stand, and the upper layer of waste liquid is removed.

[0050] Step (8). The silver nanowire precipitate obtained in step (7) is washed with deionized water, left to stand, and the upper layer of waste liquid is removed.

[0051] Step (9). Wash the silver nanowire precipitate obtained in step (8) with absolute...

Embodiment 2

[0061] Step (1). With 9.7mg FeCl 3 Dissolve in 100mL EG to prepare 6mmol / L FeCl 3 solution.

[0062] Step (2). 0.25g AgNO 3 Dissolve in 1.25g EG and mix well.

[0063] Step (3). Dissolve 0.2g of PVP in 1.25g of EG and mix well.

[0064] Step (4). Get 0.34g 6mmol / L FeCl 3 solution.

[0065] Step (5). Add step (2), step (3) and step (4) to the Erlenmeyer flask in sequence, mix well, put the Erlenmeyer flask into an oven at 110° C. for 12 hours.

[0066] Step (6). Take out the Erlenmeyer flask, let it stand, and remove the waste liquid in the upper layer.

[0067] Step (7). The silver nanowire precipitate obtained in step (6) is washed with deionized water, left to stand, and the upper layer of waste liquid is removed.

[0068] Step (8). The silver nanowire precipitate obtained in step (7) is washed with deionized water, left to stand, and the upper layer of waste liquid is removed.

[0069] Step (9). Wash the silver nanowire precipitate obtained in step (8) with absolute...

Embodiment 3

[0079] Step (1). With 9.7mg FeCl 3 Dissolve in 100mL EG to prepare 6mmol / L FeCl 3 solution.

[0080] Step (2). 0.25g AgNO 3 Dissolve in 1.25g EG and mix well.

[0081] Step (3). Dissolve 0.2g of PVP in 1.25g of EG and mix well.

[0082] Step (4). Get 0.34g 6mmol / L FeCl 3 solution.

[0083] Step (5). Add step (2), step (3) and step (4) to the Erlenmeyer flask in sequence, mix well, put the Erlenmeyer flask into an oven at 110° C. for 12 hours.

[0084] Step (6). Take out the Erlenmeyer flask, let it stand, and remove the waste liquid in the upper layer.

[0085] Step (7). The silver nanowire precipitate obtained in step (6) is washed with deionized water, left to stand, and the upper layer of waste liquid is removed.

[0086] Step (8). The silver nanowire precipitate obtained in step (7) is washed with deionized water, left to stand, and the upper layer of waste liquid is removed.

[0087] Step (9). Wash the silver nanowire precipitate obtained in step (8) with absolute...

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Abstract

The invention discloses a novel graphene heating material. A nano-metal material is doped into graphene to reduce the resistivity of a pure graphene circuit. The shape and form of a nanowire are observed by using an optical microscope and a scanning electron microscope; and the electrical performance of an obtained sample is tested and analyzed by using a four-probe tester. According to the novelgraphene heating material, the silver nanowire is doped between graphene layers, and sintering and pressing operations are carried out, so that the interface resistance and electron transport barriersof graphene sheets are reduced and the resistivity of graphene / silver nanowire composite ink is reduced to 1 / 18 of the original resistivity; and meanwhile, the resistivity of graphene / copper nanowirecomposite ink is also reduced to 1 / 5 of the original resistivity through doping a copper nanowire between the graphene layers. According to a method disclosed by the invention, graphene instead of graphene oxide is adopted, so that the resistivity of the circuit can be obviously greatly reduced, and the method has the advantages of being simple in experimental operation, low in cost, short in preparation period, high in feasibility, nontoxic and free of pollution, and can be operated at room temperature.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a novel graphene heating material to reduce the resistivity of graphene ink and improve electrical performance. Background technique [0002] Graphene is a two-dimensional allotrope of carbon, a zero-band gap semiconductor material, and a two-dimensional material with a unique crystal structure. From the perspective of chemical structure, graphene consists of sp 2 Composed of hybridized carbon atoms, it is an aromatic compound with a large π-electron conjugated system. The special structure of graphene determines its unique properties, and it exhibits excellent properties in optics, heat, electricity and mechanics, such as: amazing mobility, remarkable room-temperature Hall effect, light transmittance comparable to ITO, super High mechanical strength and thermal conductivity. The study of graphene is of great significance to the development of next-generation ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/14
CPCH05B3/145
Inventor 苏伟涛章璐茜丁苏
Owner HANGZHOU DIANZI UNIV
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