An anti-icing graphene product with electrothermal performance and a preparation method thereof

Abstract

This invention provides an anti-icing graphene component with electrothermal properties and its preparation method. The method involves: laser irradiating the surface of a diamond substrate to form several parallel graphite modules on the diamond substrate surface; mechanically cleaving the outer layer of the graphite modules to form a graphene layer in each graphite module, with the angle between the graphene sheets in the graphene layer and the diamond substrate surface being 30-40°; electrochemically exfoliating the graphene layer to reduce the angle between the graphene sheets in the graphene layer and the diamond substrate surface to 80-90°, forming a near-vertical graphene layer at the micro-nano scale; and finally, hydrophobic treatment to obtain the anti-icing graphene component with electrothermal properties. This invention, through a parallel electrothermal circuit composed of vertical graphene modules, effectively improves the electrothermal performance of the component, resulting in more uniform heating, a higher maximum steady-state temperature, and higher electrothermal conversion efficiency. Simultaneously, it possesses hydrophobic properties, better meeting the requirements of aircraft electrothermal anti-icing and de-icing.

Description

Technical Field

[0001] This invention belongs to the field of electrothermal graphene preparation technology, specifically relating to an anti-icing graphene component with electrothermal properties and its preparation method. Background Technology

[0002] The most widely used and mature system on aircraft today is the electric heating de-icing system. Traditional electric heating de-icing systems usually use metal resistance wires as the heating elements of the de-icing system. However, metal resistance wires still have obvious disadvantages, mainly poor wear resistance, bending resistance and corrosion resistance. Moreover, they may produce inductive reactance under applied voltage, resulting in low electrothermal conversion efficiency and energy loss.

[0003] Graphene is a single-atom-layer two-dimensional carbon nanomaterial, with carbon atoms linked by sp2 hybridization. It is the thinnest and stiffest material currently known, possessing a huge specific surface area and excellent thermal properties, with a thermal conductivity ranging from 4840 to 5300 W / (m•K), making it the carbon material with the highest thermal conductivity to date. However, graphene preparation mostly uses graphene oxide as a raw material. To reduce graphene oxide to graphene, which has high electrical and thermal conductivity, chemical, electrochemical, or thermal reduction methods are usually required. These processes are not only energy-intensive but may also introduce impurities or defects, affecting the performance of graphene. Secondly, when graphene is coated onto an insulating substrate to prepare a thin film, the interaction between graphene and the substrate is often weak, which limits the durability and application range of the film. Weak bonding may cause graphene to easily detach or crack during use, especially when subjected to changes in external conditions such as temperature variations, mechanical stress, or chemical corrosion. Enhancing the interfacial bonding between graphene and the substrate to improve the stability and lifespan of the film is also an important consideration. Furthermore, the thermal conductivity at the interface between graphene and silicon or metal is limited, mainly due to the increased thermal resistance at the interface. This restricts the application potential of graphene in high-performance electronic devices, thermal management materials, and other fields.

[0004] Based on the above, the present invention provides an anti-icing graphene component with electrothermal properties and a preparation method thereof, which not only possesses the excellent electrothermal properties of graphene, but can also further enhance its electrothermal properties through parallel circuits. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an anti-icing graphene component with electrothermal properties and its preparation method. This invention can generate vertical graphene with excellent electrothermal properties on the surface of a flat diamond-coated component and form a parallel electrothermal circuit, effectively improving the electrothermal anti-icing effect of the component.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] (I) This invention provides a method for preparing an anti-icing graphene component with electrothermal properties, comprising the following steps: laser irradiation treatment of the surface of a diamond substrate to form several independent graphite modules on the surface of the diamond substrate; mechanical cleaving treatment of the outer layer of the graphite modules to cleave each graphite module's outer layer into a graphene layer formed by multiple graphene sheets, wherein the angle between the graphene sheets in the graphene layer and the surface of the diamond substrate is 30~40°; electrochemical exfoliation of the graphene layer to make the angle between the graphene sheets in the graphene layer and the surface of the diamond substrate 80~90°, forming a micro-nano scale near-vertical graphene layer; hydrophobic treatment of the surface of the micro-nano scale near-vertical graphene layer to obtain an anti-icing graphene component with electrothermal properties.

[0008] Furthermore, the diamond substrate is a diamond-coated component, comprising a substrate and a diamond coating, wherein the diamond coating is prepared on the substrate by chemical vapor deposition and the thickness of the diamond coating is not greater than 20 μm.

[0009] Furthermore, the graphite modules are parallel to each other and equidistantly distributed. One end of each graphite module is bonded to a first copper foil sheet via conductive silver paste, and the other end of each graphite module is bonded to a second copper foil sheet via conductive silver paste. The first and second copper foil sheets are connected to the positive and negative terminals of the power supply, respectively, forming a parallel heating circuit with a certain resistance value. The distance between the first and second copper foil sheets is 10 mm.

[0010] Furthermore, among the plurality of graphite modules, the spacing between two adjacent graphite modules is 0.8~1mm, and the width of the graphite module is 1mm; the thickness of the near-vertical graphene layer at the micro-nano scale is 12μm.

[0011] Furthermore, the hydrophobic treatment specifically involves immersing a near-vertical graphene layer at the micro-nano scale into a fluorinated solution for 18-20 minutes, preferably 20 minutes, to obtain an anti-icing graphene component.

[0012] Furthermore, the equipment used for the laser irradiation treatment is a nanosecond laser; during the laser irradiation operation, the pulse frequency is 30kHz, the spot diameter is 20μm, the laser power is 8W, and the scanning interval is 1μm; the angle between the incident direction of the nanosecond laser and the surface of the diamond substrate is 80°.

[0013] Furthermore, the equipment used for the mechanical cleaving includes a flywheel with an outer diameter of 120 mm and a thickness of 8 mm; during the mechanical cleaving process, the flywheel feed control accuracy is 1 μm, and the flywheel speed is 2000 r / min.

[0014] Furthermore, the electrochemical stripping operation specifically involves using a graphene component with an angle of 30-40° to the diamond substrate surface as the working anode and a platinum sheet as the working cathode for electrochemical stripping. The applied voltage during stripping is 10V, and the stripping time is 30min.

[0015] Furthermore, in the electrochemical stripping operation, the electrolyte is a mixed aqueous solution of (NH4)2SO4 and NaOH, and the pH of the electrolyte is 9.

[0016] Furthermore, the platinum sheet has dimensions of 10×15×0.1mm. 3 Purity > 99.9%; the anode and cathode are placed parallel to each other with a distance of 3 cm between them.

[0017] (II) The present invention also provides an anti-icing graphene component with electrothermal properties, which is prepared by the method described above. The graphene component includes a diamond substrate and a plurality of parallel graphite modules. Graphene layers and hydrophobic layers are sequentially connected to the surfaces of the graphite modules. The angle between the graphene sheets of the graphene layer and the surface of the diamond substrate is 80-90°. The diamond substrate, graphite modules, and graphene layers are sequentially connected by carbon-carbon covalent bonds.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) The present invention treats the surface of a diamond substrate by laser irradiation to form multiple parallel graphite modules on its surface, and mechanically cleaves each graphite module to obtain a graphene layer. The angle between the graphene sheet in the graphene layer and the surface of the diamond substrate is 30~40°. Finally, the angle between the graphene sheet in the graphene layer and the surface of the diamond substrate is changed from 30~40° to 80~90° by electrochemical peeling, thus obtaining better electrothermal performance. Finally, the anti-icing effect is achieved by hydrophobic treatment.

[0020] (2) The present invention sets up a parallel electrothermal circuit composed of vertical graphene modules with uniform distribution, which can more effectively improve the electrothermal performance of the components. The graphene components are heated more uniformly, have a higher maximum steady-state temperature, and have higher electrothermal conversion efficiency.

[0021] (3) Compared with traditional graphene with electrothermal properties, the method provided by the present invention can directly generate electrothermal graphene on the diamond surface in situ, which is simpler to operate and saves production and application costs.

[0022] (4) The method provided by the present invention not only solves the problem of uneven heating of existing electrothermal components, but also improves the maximum steady-state temperature and electrothermal conversion efficiency. At the same time, it has a superhydrophobic structure, which can better meet the needs of aircraft electrothermal de-icing. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the anti-icing graphene component with electrothermal properties prepared in Example 1.

[0024] Figure 2 SEM image of the surface of the anti-icing graphene part with electrothermal properties prepared in Example 1;

[0025] Figure 3 The images shown are scanning electron microscope (SEM) images of the part from Example 1 after mechanical cleavage and chemical peeling treatments. Figure 3 In the image, 'a' is an electron microscope image of the graphene layer after mechanical cleavage treatment in step two of Example 1. Figure 3 b in the figure is an electron microscope image of the graphene layer after electrochemical exfoliation in step three of Example 1;

[0026] Figure 4 The surface water contact angle of the anti-icing graphene component with electrothermal properties prepared in Example 1;

[0027] Figure 5 Temperature rise curves of the anti-icing graphene component with electrothermal properties prepared in Example 1 and the metal wire electrothermal film under the same heat flux density. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] This invention provides an anti-icing graphene component with electrothermal properties. The graphene component includes a diamond substrate and several parallel and equidistantly distributed graphite modules. Each graphite module has a graphene layer and a hydrophobic layer distributed on its upper layer. The angle between the graphene sheet of the graphene layer and the surface of the diamond substrate is 80~90°. The diamond substrate, graphite modules and graphene layer are connected sequentially by carbon-carbon covalent bonds.

[0030] Its preparation method includes the following steps:

[0031] First, the surface of a diamond substrate is subjected to structured laser irradiation to form several independent graphite modules on the diamond substrate surface, resulting in a graphite-layered part. Second, the outer layer of the graphite modules is mechanically cleaved, so that the outer layer of each graphite module is cleaved into a graphene layer formed by multiple graphene sheets, with the angle between the graphene sheets and the diamond substrate surface being 30-40°. Third, the graphene layer is electrochemically exfoliated, so that the angle between the graphene sheets and the diamond substrate surface is 80-90°, forming a near-vertical graphene layer at the micro-nano scale. Fourth, the surface of the near-vertical graphene layer at the micro-nano scale is hydrophobically treated to obtain an anti-icing graphene part with electrothermal properties.

[0032] Regarding the diamond matrix, this invention does not have a specific limitation on its type; either natural diamond or synthetic diamond is acceptable, with synthetic diamond being preferred, and CVD diamond being more preferred. In this invention, the diamond is preferably a diamond sheet, and the size of the diamond sheet is not specifically limited. In a preferred embodiment of this invention, the size of the diamond sheet is specifically 10mm × 10mm × 0.4mm (length × width × thickness).

[0033] In this invention, the plurality of graphite modules are parallel to each other and equidistantly distributed. One end of each graphite module is bonded to a first copper foil sheet via conductive silver paste, and the other end of each graphite module is bonded to a second copper foil sheet via conductive silver paste. The first and second copper foil sheets are connected to the positive and negative terminals of a power supply, respectively, forming a parallel electrothermal circuit. This invention does not limit the spacing between the first and second copper foil sheets; in an embodiment of this invention, the spacing between the first and second copper foil sheets is 10 mm.

[0034] Furthermore, this invention does not limit the spacing between graphite modules or the size of a single graphite module. In an embodiment of this invention, the spacing between two adjacent graphite modules is 0.8~1mm, and the size of the graphite module is 10mm (length) × 1mm (width), which maximizes the electrothermal conversion efficiency of the parallel circuit composed of vertical graphene modules.

[0035] For laser irradiation: The equipment used for laser irradiation is a nanosecond laser. The preferred operating parameters in this embodiment are: pulse frequency of 30kHz, spot diameter of 20μm, laser power of 8W, and scanning spacing of 1μm. Laser irradiation is performed in an air atmosphere. Through laser irradiation, the diamond on the diamond substrate surface transforms into graphite, forming a graphite layer of a certain thickness. This invention, utilizing the precision of lasers, ensures the accuracy of the electrothermal graphene generation region, enabling the generation of electrothermal graphene in a defined shape and location. Furthermore, considering heat dissipation from the diamond substrate during laser irradiation, the angle between the laser incident direction of the pulsed laser and the surface of the diamond substrate to be processed is 80~85°.

[0036] For the mechanical cleaving operation: After obtaining the part containing the graphite layer, the part is mechanically cleaved to cleave the outer layer of the graphite layer into a graphene layer formed by multiple graphene sheets, with the angle between the graphene sheets and the diamond substrate surface being 30~40°. The equipment used for mechanical cleaving includes a flywheel made of stainless steel, with an outer diameter of 120mm and a thickness of 8mm; the operating conditions for mechanical cleaving include: flywheel feed control accuracy of 1μm and flywheel speed of 2000r / min.

[0037] For the electrochemical exfoliation operation: After obtaining the graphene layer part, the present invention performs electrochemical exfoliation on the graphene layer part. The preferred electrochemical exfoliation operation process of the present invention is as follows: the graphene part with an angle of 30~40° with the diamond substrate surface is used as the working anode, and a platinum sheet (purity >99.9%) is used as the working cathode for electrochemical exfoliation. The anode and cathode are placed in parallel. The electrolyte is a mixed solution of (NH4)2SO4 and NaOH, preferably with a pH value of 9. The voltage applied during exfoliation is 10V, and the exfoliation time is 30min.

[0038] The hydrophobic treatment process specifically involves immersing a near-vertical graphene layer at the micro-nano scale in a fluorinated solution for 18-20 minutes, preferably 20 minutes, to obtain an anti-icing graphene component. In other embodiments of the present invention, other hydrophobic materials can also be selected for the hydrophobic treatment process. Those skilled in the art can choose according to their needs, and the present invention does not impose any limitations.

[0039] Compared to traditional graphene with electrothermal properties, this invention generates a Wiener-scale near-vertical graphene layer on the surface of diamond in situ. The graphene is uniformly distributed on the diamond surface, and the graphene sheets overlap to form a well-conductive mesh, thus achieving superior electrothermal performance. Furthermore, this invention bonds the two ends of several equidistant and parallel graphene modules to copper foil sheets using conductive silver paste. The copper foil sheets at both ends are connected to the positive and negative terminals of a power supply, respectively, forming a parallel electrothermal circuit, which further improves the electrothermal performance of the fabricated part. The method provided by this invention not only solves the problem of uneven heating in existing electrothermal components but also improves the maximum steady-state temperature and electrothermal conversion efficiency. Simultaneously, it possesses a superhydrophobic structure, better meeting the requirements of aircraft electrothermal de-icing.

[0040] Example 1

[0041] This invention provides an anti-icing graphene component with electrothermal properties, the preparation method of which includes the following steps:

[0042] Step 1: Laser irradiation treatment:

[0043] A CVD diamond sheet with dimensions of 10mm×10mm×0.4mm was polished, washed with acetone, and dried. Then, in an air atmosphere, a nanosecond laser was used to perform structured laser irradiation treatment on the surface of the CVD diamond sheet. Considering the heat dissipation of the diamond substrate during the laser irradiation process, the angle between the laser incident direction and the diamond substrate surface to be processed was 80°. After laser irradiation, several independent graphite modules were formed on the diamond surface. The graphite modules were parallel to each other and equidistantly distributed. The distance between two adjacent graphite modules was 0.8 mm, and the width of the graphite module was 1 mm.

[0044] During laser irradiation, the laser filling scan is performed in sections starting from the edge of the CVD diamond wafer to form a microstructure with periodic papillae. Each region is 10mm × 1mm in size, and the distance between each region is 0.8mm. The laser operation parameters include: pulse frequency of 30kHz, spot diameter of 20μm, laser power of 8W, and scanning distance of 1μm.

[0045] Step 2: Mechanical cleavage treatment:

[0046] The outer layer of the graphite module prepared in step one is mechanically cleaved using a flywheel. The flywheel is a stainless steel flywheel with a brushed and polished surface, a smooth outer circumference, an outer diameter of 120 mm, and a thickness of 8 mm. The mechanical cleaving conditions include a flywheel feed control accuracy of 1 μm and a flywheel speed of 2000 r / min. After mechanical cleaving, each graphite module's outer layer is cleaved into a graphene layer composed of multiple graphene sheets, with the angle between the graphene sheets and the diamond substrate surface in the graphene layer being 30–40°.

[0047] Step 3: Electrochemical stripping treatment:

[0048] Electrochemically exfoliating the graphene layer results in an angle of 80-90° between the graphene sheets and the diamond substrate surface, forming a near-vertical micro-nano scale graphene layer with a thickness of 12 μm.

[0049] The electrochemical exfoliation operation specifically involves using a graphene component with an angle of 30-40° to the diamond substrate surface as the working anode, and a platinum sheet as the working cathode. The anode and cathode are placed parallel to each other with a spacing of 3 cm. Electrochemical exfoliation is performed with an applied voltage of 10V for 30 minutes. The platinum sheet has dimensions of 10×15×0.1mm. 3 The purity is >99.9%. In the electrochemical stripping operation, the electrolyte is a mixed aqueous solution of (NH4)2SO4 and NaOH, and the pH of the electrolyte is 9.

[0050] Step 4: Hydrophobic treatment:

[0051] A near-vertical graphene layer at the micro-nano scale was immersed in a fluorinated solution for 20 minutes to obtain an anti-icing graphene component with electrothermal properties.

[0052] Step 5, Circuit Connection:

[0053] Several graphite modules are bonded at one end to a first copper foil sheet using conductive silver paste, and at the other end to a second copper foil sheet using conductive silver paste. The first and second copper foil sheets are connected to the positive and negative terminals of a power supply, respectively, forming a parallel heating circuit. The distance between the first and second copper foil sheets is 10 mm.

[0054] Example 2

[0055] The anti-icing graphene component with electrothermal properties was prepared according to the method of Example 1, with the following difference:

[0056] (1) The spacing between each region during structured laser irradiation is 0.9 mm;

[0057] (2) Immerse the superhydrophobic graphene part in a fluoride solution for 18 minutes.

[0058] Example 3

[0059] The anti-icing graphene component with electrothermal properties was prepared according to the method of Example 1, with the following difference:

[0060] (1) The spacing between each region is 1 mm during structured laser irradiation;

[0061] (2) Immerse the superhydrophobic graphene part in a fluoride solution for 16 min.

[0062] Characterization and performance testing:

[0063] Figure 1 This is a schematic diagram of the anti-icing graphene component with electrothermal properties prepared in Example 1, where each vertical graphene module is connected in parallel.

[0064] Figure 2 The image shows a surface SEM image of the vertical graphene module in the anti-icing graphene component with electrothermal properties prepared in Example 1.

[0065] Figure 3 In the image, 'a' is an electron microscope image of the graphene layer after mechanical cleavage treatment in step two of Example 1. Figure 3 In Figure b, the graphene layer after electrochemical exfoliation in step three of Example 1 is shown by electron microscopy.

[0066] Figure 4 This is a schematic diagram of the water contact angle of the anti-icing graphene component with electrothermal properties prepared in Example 1. Figure 4 It can be seen that the surface water contact angle of the graphene part is 129°, and the surface has a hydrophobic microstructure of periodic papillae.

[0067] The graphene component prepared in Example 1 was bonded to copper foil electrodes at both ends using conductive silver paste, and the same heat flux density was applied to both ends. The heating rate and maximum steady-state temperature of Example 1 and the metal wire heating film were measured and compared. The test results are shown in […]. Figure 5 And Tables 1-2, by Figure 5 As shown in Tables 1-2, compared with metal wire electrothermal films, the electrothermal graphene components prepared in this invention have higher electrothermal conversion efficiency and stronger electrothermal performance.

[0068] Table 1 - Electrothermal performance parameters of CDGG electric heating components at room temperature

[0069] <![CDATA[Heat flux density (W / cm 2 ).]]> Maximum steady-state temperature (°C) electrothermal conversion efficiency Temperature growth parameter (s) as a function of time Temperature decay parameter (s) as a function of time 0.3 75.9 84.9% 36.812±4.528 35.334±5.412 0.6 111.7 88.4% 31.269±5.102 30.554±4.236 0.9 145.2 93.2% 28.233±3.175 27.962±5.009

[0070] Table 2 - Electrothermal performance parameters of traditional metal wire electric heating components at room temperature

[0071] <![CDATA[Heat flux density (W / cm 2 )]]> Maximum steady-state temperature (°C) Electrothermal conversion efficiency (mW / ℃) Temperature growth parameter (s) as a function of time Temperature decay parameter (s) as a function of time 0.3 70.2 80.1% 40.511±8.112 39.254±6.335 0.6 109.2 84.9% 35.689±5.235 35.512±6.236 0.9 120.8 90.3% 31.789±5.632 29.668±6.027

[0072] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A method for preparing an anti-icing graphene component with electrothermal properties, characterized in that, Includes the following steps: Laser irradiation is applied to the surface of a diamond matrix to form several independent graphite modules on the surface of the diamond matrix. The outer layer of the graphite module is mechanically cleaved so that the outer layer of each graphite module is cleaved into a graphene layer formed by multiple graphene sheets, and the angle between the graphene sheets and the diamond substrate surface in the graphene layer is 30~40°. Electrochemically exfoliating the graphene layer results in an angle of 80-90° between the graphene sheets in the graphene layer and the surface of the diamond substrate, forming a near-vertical graphene layer at the micro-nano scale. Hydrophobic treatment is applied to the surface of the near-vertical graphene layer at the micro-nano scale to obtain an anti-icing graphene component with electrothermal properties. The plurality of independent graphite modules are parallel to each other. One end of each graphite module is bonded to a first copper foil metal sheet via conductive silver paste, and the other end of each graphite module is bonded to a second copper foil metal sheet via conductive silver paste. The first copper foil metal sheet and the second copper foil metal sheet are respectively connected to the positive and negative terminals of the power supply to form a parallel electrothermal circuit.

2. The method for preparing the anti-icing and de-icing graphene component with electrothermal properties according to claim 1, characterized in that, The diamond substrate is a diamond-coated component, including a substrate and a diamond coating. The diamond coating is prepared on the substrate by chemical vapor deposition, and the thickness of the diamond coating is no more than 20 μm.

3. The method for preparing the anti-icing and de-icing graphene component with electrothermal properties according to claim 1, characterized in that, In the plurality of graphite modules, the spacing between two adjacent graphite modules is 0.8~1mm, and the width of the graphite module is 1mm; the thickness of the near-vertical graphene layer at the micro-nano scale is no greater than 12μm.

4. The method for preparing the anti-icing and de-icing graphene component with electrothermal properties according to claim 1, characterized in that, The hydrophobic treatment specifically involves immersing a near-vertical graphene layer at the micro-nano scale into a fluorinated solution for 18-20 minutes to obtain an anti-icing graphene component.

5. The method for preparing the anti-icing and de-icing graphene component with electrothermal properties according to claim 1, characterized in that, The equipment used for the laser irradiation treatment is a nanosecond laser; In the laser irradiation operation, the pulse frequency is 30kHz, the spot diameter is 20μm, the laser power is 8W, and the scanning interval is 1μm; the angle between the incident direction of the nanosecond laser and the surface of the diamond substrate is 80°.

6. The method for preparing the anti-icing and de-icing graphene component with electrothermal properties according to claim 1, characterized in that, The mechanical cleaving device includes a flywheel with an outer diameter of 120 mm and a thickness of 8 mm. During the mechanical cleavage process, the flywheel feed control accuracy is 1μm, and the flywheel speed is 2000r / min.

7. The method for preparing the anti-icing and de-icing graphene component with electrothermal properties as described in claim 1, characterized in that, The electrochemical stripping operation specifically involves: A graphene part with an angle of 30~40° to the diamond substrate surface was used as the working anode, and a platinum sheet was used as the working cathode for electrochemical stripping. The applied voltage was 10V and the stripping time was 30min.

8. The method for preparing the anti-icing and de-icing graphene component with electrothermal properties as described in claim 7, characterized in that, In the electrochemical stripping operation, the electrolyte is a mixed aqueous solution of (NH4)2SO4 and NaOH, and the pH of the electrolyte is 9. The platinum sheet measures 10×15×0.1mm. 3 Purity > 99.9%; the anode and cathode are placed parallel to each other with a distance of 3 cm between them.

9. A graphene anti-icing component with electrothermal properties, prepared by the method according to any one of claims 1 to 8, characterized in that, The graphene component includes a diamond substrate, several parallel graphite modules, a graphene layer, and a hydrophobic layer; the angle between the graphene sheet of the graphene layer and the surface of the diamond substrate is 80~90°. The diamond matrix, graphite module, and graphene layer are sequentially connected by carbon-carbon covalent bonds.

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