Sintered titanium plate for hydrogen production by electrolysis of water

Abstract

The application provides a sintered titanium plate (1) for hydrogen production by electrolysis of water, comprising a support (2) for providing support for the sintered titanium plate, and a titanium layer (3), wherein a plurality of mesh holes (21) are arranged on the support (2) in a regular or irregular distribution; the titanium layer (3) is composed of titanium powder, and covers at least one side of the support (2) and is integrally formed with the support (2) to form a plate-shaped body; the thickness of the sintered titanium plate (1) is 0.01-0.05 mm through the combination of the support (2) and the titanium layer (3), and the sintered titanium plate (1) has good mechanical strength, water permeability and electrical conductivity.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of PEM electrolyzer, and more particularly to a sintered titanium plate for electrolysis of water to produce hydrogen. BACKGROUND

[0002] As a functional material with excellent performance, sintered titanium plate is widely used in chemical industry, filtration, medicine and electrode support due to its corrosion resistance, high strength, good electrical conductivity and strong air permeability. In the prior art, sintered titanium plate is prepared by directly sintering titanium powder into a shaped product, which still has some defects, for example:

[0003] Currently, the titanium plate prepared by directly sintering titanium powder has a thickness usually in the range of 0.5-1 mm. Due to the large thickness, the water permeability of the material is difficult to meet the application requirements, especially in the fields of filtration and electrical conductivity, the performance is limited. In order to meet the demand for thin sintered titanium plate, the prior art reduces the thickness by customizing thin products. However, due to the overall strength and impact resistance being reduced by simply thinning, the thin titanium plate is easy to crack or even fail during use. SUMMARY

[0004] The purpose of the present application is to provide a sintered titanium plate for electrolysis of water to produce hydrogen, which realizes good water permeability and electrical conductivity by combining the titanium layer with the support, and solves the problems of excessive thickness in the prior art or easy breakage of customized thin products.

[0005] In order to achieve the above purpose, the present application provides a sintered titanium plate for electrolysis of water to produce hydrogen, comprising: a support for providing support for the sintered titanium plate, a plurality of regularly or irregularly distributed mesh holes are formed on the support; a titanium layer covering at least one side of the support and integrally forming a plate-shaped body with the support.

[0006] Preferably, the support is an integrated mesh structure formed by a draw net or a segmented mesh structure formed by a woven mesh.

[0007] Preferably, the support is formed by at least two layers of mesh structure to form a composite mesh structure.

[0008] Preferably, the mesh holes of the composite mesh structure decrease in diameter layer by layer to form a gradient support structure.

[0009] Preferably, the mesh holes of the support include one or more of rectangular, hexagonal or rhombic.

[0010] Preferably, at least a part of the titanium layer is embedded in the mesh holes of the support.

[0011] Preferably, the titanium layer covers both sides of the support, one side of the support covers a titanium layer of a first thickness, and the other side covers a titanium layer of a second thickness, when the first thickness and the second thickness are different, an asymmetric structure is formed.

[0012] Preferably, the titanium layer includes a plurality of titanium blocks, the support is provided with a plurality of coverage areas, and the titanium blocks are covered in the coverage areas to form at least part of the thickening.

[0013] Preferably, the coverage area is a preset working surface and / or a high stress area.

[0014] Preferably, the thickness of the plate-shaped body is 0.01-0.05mm.

[0015] The utility model can achieve the following beneficial effects:

[0016] 1. In the utility model, the titanium layer covers one side of the support, and the overall structure thickness is compressed to 0.01-0.05mm by the support, compared with the existing thickness of sintered titanium plate, the structure provided by the utility model can improve the water permeability, especially suitable for efficient filtration and rapid liquid discharge scenes.

[0017] 2. The support can be used as a support during sintering, integrated with the titanium layer, effectively improving the overall strength and impact resistance of the thin titanium plate; Even in the thin structure, the compression resistance and stability of the sintered titanium plate provided by the utility model can still be maintained, solving the problem of easy breakage of the existing thin titanium plate. DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0019] Figure 1 It is a structure schematic view of a sintered titanium plate for electrolytic water hydrogen production provided by the embodiment of the present application;

[0020] Figure 2 It is a structure schematic view of a composite net structure formed by superimposing two layers of net structures provided by the embodiment of the present application;

[0021] Figure 3 It is a structure schematic view of a composite net structure formed by superimposing two layers of net structures with different densities provided by the embodiment of the present application;

[0022] Figure 4is a structural schematic diagram of a composite net structure formed by three-layer net layer structure staggered superposition provided by the embodiment of the present application;

[0023] Figure 5 is a structural schematic diagram of a plate-shaped body provided by the embodiment of the present application;

[0024] Figure 6 is a structural schematic diagram of a composite net structure with a functional layer provided by the embodiment of the present application;

[0025] Figure 7 is a structural schematic diagram of a support with locally enhanced net layer density provided by the embodiment of the present application;

[0026] Figure 8 is a structural schematic diagram of a composite net structure with mesh holes decreasing layer by layer provided by the embodiment of the present application;

[0027] Figure 9 is a structural schematic diagram of a support with hexagonal mesh holes provided by the embodiment of the present application;

[0028] Figure 10 is a structural schematic diagram of a support with rhombic mesh holes provided by the embodiment of the present application;

[0029] Figure 11 is a schematic diagram of a support with titanium layers of different thicknesses on two sides provided by the embodiment of the present application;

[0030] Figure 12 is a structural schematic diagram of a titanium layer with thickness gradient provided by the embodiment of the present application;

[0031] Figure 13 is a structural schematic diagram of a support and a titanium layer forming local thickening provided by the embodiment of the present application. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0033] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0034] The present example provides a sintered titanium plate (1) for electrolysis of water to produce hydrogen, as shown in the figure, the sintered titanium plate (1) comprises a support (2) and a titanium layer (3), the support (2) is used to provide the necessary support strength for the sintered titanium plate (1), and a plurality of mesh holes (21) are formed on it, the plurality of mesh holes (21) are regularly or irregularly distributed, wherein the regularly distributed mesh holes (21) can uniformly disperse external pressure, so that the titanium plate is uniformly stressed, and the irregularly distributed mesh holes (21) can provide flexible support structure, for example, in the scene where the support strength requirement is higher or special fluid guiding is required, the size of the mesh hole (21) can be set to 0.05mm-1.5mm. Figure 1

[0035] The support (2) is preferably made of titanium mesh, which has excellent corrosion resistance and electrical conductivity. In other examples, the support (2) can also be selected according to actual needs, such as stainless steel, nickel-based alloy or titanium-plated mesh, to enhance its performance.

[0036] The titanium layer (3) is composed of titanium powder, and the particle size range of the titanium powder is set to 1-10μm, wherein the size of the particle size can be selected according to the density requirement of the titanium layer (3), for example, the smaller particle size range 1-5μm is suitable for dense surface to enhance its corrosion resistance; the larger particle size range 5-10μm is suitable for titanium layer (3) with stronger gas permeability, wherein the proportion of small particles (1-5μm) is 60%-80%, and the proportion of large particles (5-10μm) is 20%-40%. In the sintering process, the titanium powder covers the surface of the mesh hole (21) of the support (2) and gradually penetrates into the mesh hole (21) to form a tight combination. The support (2) provides a support frame through the mesh hole (21), and the titanium powder forms a layer of solid metal titanium surface after sintering. The combination of titanium powder and support (2) makes the titanium layer (3) have high adhesion.

[0037] ​In one example, the titanium powder layer is coated on one side of the support member (2) by electrostatic spraying to form the titanium layer (3). Specifically, the electrostatic spraying process first sprays the charged titanium powder to the surface of the support member (2) through an electrostatic spray gun, and the support member (2) is usually grounded or a reverse voltage is applied to ensure that the sprayed titanium powder particles can be adsorbed on the surface of the support member (2). During the spraying process, the speed and angle of the nozzle can be adjusted to make the titanium powder evenly cover the surface of the support member (2) and form a preliminary titanium layer (3) on the surface. It is conceivable that after electrostatic spraying, the coated titanium layer (3) can be heat treated to further consolidate the bonding force between the titanium powder particles.

[0038] In another example, the titanium powder is mixed with a binder to form a slurry, which is then uniformly coated on the surface of the support member (2) to form the titanium layer (3) by slurry coating. Specifically, the titanium powder is mixed with a predetermined proportion of binder (such as polymer, resin or other synthetic material). In addition, according to the properties of the titanium powder and the desired coating effect, other additives such as solvents, dispersants or plasticizers can also be added. The mixed slurry is then fully mixed by stirring to make the titanium powder and the binder fully mixed. Then, the slurry is coated on the surface of the support member (2) by spraying, brushing, dipping or rolling, etc. The coated slurry is then heat treated or cured to form a preliminary titanium layer (3).

[0039] The thickness of the titanium layer (3) is set to 0.01mm-0.04mm. It is conceivable that the thickness of the titanium layer (3) can be controlled by adjusting the amount of titanium powder coating to meet different application requirements. Using existing sintering equipment and sintering process, for example, the support member (2) covered with the titanium layer (3) is sent into the sintering furnace and integrated into a whole plate-shaped body by vacuum sintering process. After sintering and cooling, the titanium layer (3) is firmly combined with the support member (2) to form a whole plate-shaped body. The mesh holes (21) on the support member (2) cooperate with the structure of the titanium layer (3) to make the titanium plate have high water permeability or air permeability. The total thickness of the sintered titanium plate (1) is 0.01mm-0.05mm.

[0040] In one example, the support member (2) can be made of high-purity titanium plate (such as TA1, TA2) or other metal plate material. The mesh holes (21) structure can be formed on the metal plate by existing mechanical punching and stretching process. Specifically, a predetermined pattern including the hole diameter and arrangement of the mesh holes (21) is set on the plate and punched. The punched plate is then stretched to expand the hole diameter of the mesh holes (21) and form a uniform mesh structure. The mesh structure formed by stretching is an integrated whole without welding points.

[0041] In another example, the support member (2) can be made of titanium wire or other metal wire, the diameter of which can be set according to actual needs. The metal wire is interwoven into a mesh structure through existing weaving process. Specifically, existing plain weave, twill weave or other weaving methods can be used to form a mesh structure with different densities and pore sizes. According to the overall size of the support member (2), the woven mesh is segmented and assembled into a support member (2) with the required size through welding or other connection methods. The mesh structure formed by the woven mesh can be flexibly adjusted in size and shape according to actual needs, and is suitable for the needs of some complex structures.

[0042] The support member (2) is formed by superimposing at least two layers of mesh structures to form a composite mesh structure, Figure 2 A two-layer mesh structure is shown superimposed to form a composite mesh structure, which is a first layer mesh structure (22) and a second layer mesh structure (23). The main material of the support member (2) is selected from titanium mesh, and other metal mesh (such as stainless steel mesh, aluminum mesh) or composite material mesh (such as titanium-plated mesh, ceramic mesh) can also be selected. In some examples, the surface of the support member (2) can be provided with a functional coating, such as an anti-corrosion coating or a conductive coating, to improve performance.

[0043] In one example, the support member (2) is arranged by interlacing and superimposing two layers of titanium mesh. The pore size and mesh density of the titanium mesh can be set according to actual needs, such as Figure 3 As shown, the upper layer mesh (21) has a first density, and the lower layer mesh (21) has a second density, wherein the first density is greater than the second density. The upper layer of titanium mesh is used to support titanium powder and prevent the titanium powder from penetrating during the sintering process. The lower layer of titanium mesh can enhance the water permeability and fluid performance of the whole.

[0044] In another example, the support member (2) is arranged by superimposing multiple layers. According to actual needs, the composite mesh can be increased to 3-5 layers, and different arrangement methods can be used, such as Figure 4 A composite mesh with three layers of mesh structure is shown. Each layer of mesh is arranged in an interlaced manner with the upper and lower layers of mesh (21) to increase the stability of the composite mesh structure. The mesh (21) of adjacent layers is arranged in the same direction to adapt to specific load direction scenarios.

[0045] Titanium powder is uniformly covered on one side of the composite mesh structure with a thickness of 0.01mm-0.05mm. The titanium layer (3) is combined with the composite mesh structure into an integral plate-shaped body using existing sintering equipment and sintering process. The structure of the plate-shaped body is shown in Figure 5 As shown, the composite mesh structure retains the pore distribution characteristics of the multiple layers of mesh. The multiple-layer composite mesh structure can improve the compressive strength and bending resistance of the plate, and the layered voids can allow smooth fluid flow, avoiding the blocking problem of single-layer mesh.

[0046] In another example, as shown in Figure 6 A specific functional layer (4) such as a filter layer, a heat dissipation layer, etc. can also be added to the composite mesh structure, specifically, a microporous filter mesh for fine filtration can be added to the middle interlayer of the composite mesh structure; a metal mesh with good thermal conductivity can be added to the composite mesh structure, which can be used to enhance heat dissipation.

[0047] In another example, as shown in Figure 7 The mesh structure is divided into an A part (24), a B part (25), and a C part (26), wherein the A part (24) and the B part (25) are high-stress areas, and the mesh layer density of the A part (24) and the B part (25) is greater than that of the C part (26). The A part (24) and the B part (25) can also have different mesh layer densities. This example is aimed at high-stress or high-wear areas, and the mesh layer density is locally enhanced.

[0048] Further, as shown in Figure 8 The composite mesh structure is formed by stacking multiple layers of mesh structures, and the diameter of the mesh holes (21) gradually decreases from the lower layer to the upper layer. For example, the lower layer mesh hole (21) has a pore size of 0.5mm-1.5mm, which is used to provide strength support and reduce fluid resistance. The middle layer mesh hole (21) has a pore size of 0.3mm-0.5mm, which can balance strength and titanium powder support. The upper layer mesh hole (21) has a pore size of 0.05mm-0.3mm, which is used to carry titanium powder and prevent titanium powder particles from penetrating. The composite mesh structure is at least 3 layers stacked.

[0049] Correspondingly, the lower layer mesh uses a mesh drawing process to form a structure with larger pore size and higher strength. The middle layer mesh and the upper layer mesh can be formed by weaving or etching to form a structure with medium and small pore sizes. The upper, middle, and lower three layers of mesh are stacked in order from large to small according to their pore sizes, and then fixed by sintering to form an overall structure. In another example, existing electric welding or laser welding processes can also be used to fix the edges of the mesh to form an overall structure.

[0050] When using a composite mesh structure, the titanium powder is at least covered on the upper surface of the composite mesh structure, and the existing sintering process is used to integrate the titanium layer (3) and the composite mesh to form an integrated plate-shaped body. The upper titanium layer (3) combined with the lower gradient mesh hole (21) can improve the performance of the titanium plate.

[0051] Further, different pore size distributions can be designed through simulation to adapt to specific environments, for example, a higher density pore size gradient distribution is used in high-stress areas, and the pore size density is reduced in low-stress areas. The pore size can also be set to decrease in a certain direction according to the direction of the fluid to improve the performance of the fluid.

[0052] The mesh holes (21) of the support (2) include one or more of a rectangle, a hexagon, or a diamond.

[0053] In one example, as shown in FIG. 2, the mesh holes (21) are arranged in a regular rectangular distribution, which is convenient for sintering with the titanium layer (3). Specifically, the rectangular mesh holes (21) can be arranged in a ratio of 1:1 to 1:3, such as 0.2mm x 0.2mm or 0.1mm x 0.3mm. The rectangular mesh holes (21) can be formed in a regular rectangular distribution by a drawing net process, and a shearing stretching method can be used. Figure 1 In another example, as shown in FIG. 3, the mesh holes (21) are arranged in a regular hexagonal (honeycomb) distribution, which has a better strength-to-weight ratio. Specifically, each hole is composed of six equal-length sides, and the side length can be arranged in a range of 0.05mm-0.8mm. The hexagonal mesh holes (211) are formed in a regular honeycomb shape by laser etching or precision mold processing.

[0054] Figure 9 In another example, as shown in FIG. 4, the mesh holes (21) are arranged in a regular rhombus distribution, which provides anisotropic strength distribution and is suitable for scenarios where force is applied in a specific direction, and the rhombus structure can adjust the directional porosity. Specifically, the rhombus diagonal ratio can be arranged in a ratio of 1:1 to 1:2, such as 0.1mm x 0.2mm or 0.2mm x 0.4mm. The rhombus mesh holes (212) are formed in a regular rhombus distribution by weaving or cross-drawing net processes.

[0055] In another example, as shown in FIG. 5, the mesh holes (21) are arranged in a regular rhombus distribution, which provides anisotropic strength distribution and is suitable for scenarios where force is applied in a specific direction, and the rhombus structure can adjust the directional porosity. Specifically, the rhombus diagonal ratio can be arranged in a ratio of 1:1 to 1:2, such as 0.1mm x 0.2mm or 0.2mm x 0.4mm. The rhombus mesh holes (212) are formed in a regular rhombus distribution by weaving or cross-drawing net processes. Figure 10 Further, the support (2) can be selected in a single mesh hole (21) shape, such as only using hexagonal mesh holes (211); the support (2) can also be selected in a multi-shape combination, combining rectangular, hexagonal and rhombus mesh holes (212) in the same support (2), for example, the central region of the support (2) uses hexagonal mesh holes (211) to enhance strength and water permeability, the edge region uses rectangular mesh holes (21) to improve bending strength, and the force- applied region in a specific direction uses rhombus mesh holes (212) to optimize anisotropic performance.

[0056] For the combination of multi-shape mesh holes (21), the distribution of the porosity is adjusted, for example, the central region has high porosity to improve fluid performance, and the edge region has low porosity to enhance structural strength.

[0057] In this example, the titanium layer (3) is at least covered on one side of the support (2), and covers the opening region of the mesh holes (21), and the existing sintering process is used to form an integrated plate-shaped body of the titanium layer (3) and the support (2).

[0058]

[0059] ​​It should be noted that the titanium layer (3) covers the opening area of the mesh hole (21), and part of the titanium powder of the titanium layer (3) is embedded into the inside of the support (2) through the mesh hole (21). The titanium layer (3) and the support (2) are preformed by the existing vacuum pressing equipment, and the pressure range is set to 50MPa-150MPa. During the pressing process, the titanium powder of the titanium layer (3) further enters the mesh hole (21) of the support (2) after being pressed, forming an initial structure of the titanium powder embedded in the mesh hole (21). Then the preformed titanium layer (3) and support (2) are integrally sent into a sintering furnace to obtain an embedded combined structure of the titanium layer (3) and the support (2).

[0060] Further, the coating amount and embedding depth of the titanium powder can be adjusted to optimize the local porosity. For example, a high embedding rate area is set to adapt to the scene of high strength support, and a low embedding rate area is set to adapt to the scene of high water permeability or electrical conductivity. Double or multi-layer titanium powder configuration can also be used. For example, on the same side of the support (2), the first layer uses titanium powder with a larger particle size (5µm-10µm) to embed the mesh hole (21) to enhance the bonding strength, and the second layer uses titanium powder with a smaller particle size (1µm-5µm) to cover the surface to improve the surface density and wear resistance.

[0061] In one example, as shown in Figure 11 the titanium layer (3) covers both sides of the support (2). The first titanium layer (31) covers one side of the support (2), and the second titanium layer (32) covers the other side of the support (2). The first titanium layer (31) serves as a working surface and is used as a filter layer or a corrosion-resistant surface. The thickness of the first titanium layer (31) is set to 0.01mm-0.04mm. The second titanium layer (32) serves as a support surface and is used to enhance the support strength. The thickness of the second titanium layer (32) is set to 0.01mm-0.02mm. The first titanium layer (31) uses titanium powder with a smaller particle size (1µm-5µm), and the second titanium layer (32) uses titanium powder with a larger particle size (5µm-10µm) to enhance the interlayer bonding force. The titanium powder is coated in layers. The first titanium layer (31) has a larger coating thickness, and the coating amount is set to 0.02g / cm²-0.05g / cm². The second titanium layer (32) has a smaller coating thickness, and the coating amount is set to 0.01g / cm²-0.02g / cm². After the titanium powder is coated, the preforming is performed by the vacuum pressing equipment to compact the titanium powder particles. Then the pressed part is placed in a sintering furnace for sintering to obtain an overall plate structure.

[0062] It can be understood that the working surface is suitable for bearing high-intensity working pressure due to the thicker titanium layer (3) with high surface hardness and strong compressive strength, the support surface can reduce material use and reduce overall weight due to the thinner titanium layer (3), and the double-sided titanium layer (3) can improve the electrical conductivity. Among them, for the titanium layer (3) of different thickness, the support piece (2) mesh (21) with different pore diameters can be selected, for example, the working surface uses smaller pore diameter (0.5mm-1mm) to improve the uniformity of the titanium layer (3), and the support surface uses larger pore diameter (2mm-5mm) to enhance the titanium powder embedding effect.

[0063] Further, a thickness gradient is formed inside the working surface and the support surface, Figure 12 A part of the titanium layer (3) is shown, and the thickness of the titanium layer (3) gradually increases from the side close to the support piece (2) to the side away from the support piece (2). The thinner side can increase flexibility, the thicker side can increase rigidity, and the phenomenon of internal stress concentration is reduced. The thickness gradient can form a fluid overpass in the titanium layer (3), and the fluid is preliminarily filtered faster on the thinner side and more fully on the thicker side.

[0064] In one example, as Figure 13 shown, the titanium layer (3) includes a plurality of titanium blocks (33), the titanium blocks (33) are also composed of titanium powder, the support piece (2) is an integrated mesh structure or a composite mesh structure, and a plurality of coverage areas (27) are arranged on the surface of the support piece (2). The coverage area (27) is arranged on at least one side of the support piece (2), the coverage area (27) is distributed according to a preset rule, which can be rectangular, circular or other shapes, and the size of the coverage area (27) can be set to be uniform or non-uniform distribution according to actual needs to adapt to the strength of different parts. The size and thickness of the titanium block (33) are matched with the coverage area (27). The titanium block (33) is increased in the high-stress area (such as the part of the working surface that needs to bear larger load) to form a thickened area, and the thickened area has a lower resistance path. In some coverage areas (27), the titanium block (33) can be sintered in multiple layers to form a thicker structure. In the same coverage area (27), the thickness of the titanium block (33) can change according to a gradient, for example, gradually increasing from the edge to the center to optimize the stress distribution of the structure. The coverage area (27) of the titanium block (33) can be set to a porous structure with different porosities from the titanium layer (3) around it to achieve the effect of lightweight,

[0065] The example provides a super-thin sintered titanium plate (1), comprising a support (2) and a titanium layer (3), the titanium layer (3) covers one side or both sides of the support (2) and is integrally sintered with the support (2) to form a plate-shaped body, titanium powder with a particle diameter of 1-10 microns is used, the thickness of the support (2) is set to 0.01-0.04 mm, the size of the mesh (21) of the support (2) is set to 50-300 microns, and the overall thickness of the plate-shaped body is 0.01-0.05 mm.

[0066] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

[0067] List of reference signs:

[0068] Sintered titanium plate 1

[0069] Support 2

[0070] Mesh 21

[0071] Hexagonal mesh 211

[0072] Rhombic mesh 212

[0073] First layer mesh structure 22

[0074] Second layer mesh structure 23

[0075] A part 24

[0076] B part 25

[0077] C part 26

[0078] Covering area 27

[0079] Titanium layer 3

[0080] First titanium layer 31

[0081] Second titanium layer 32

[0082] Titanium block 33

[0083] Functional layer 4

Claims

1. A sintered titanium plate for hydrogen production via water electrolysis, characterized in that, include: The support member is used to provide support for the sintered titanium plate. It has a number of mesh holes that are regularly or irregularly distributed. The support member is an integrated mesh structure formed by pulling a mesh or a segmented mesh structure formed by weaving a mesh. The support member is a composite mesh structure formed by superimposing at least two layers of mesh structures. The mesh hole diameter of the composite mesh structure decreases layer by layer to form a gradient support structure. A titanium layer, which covers at least one side of the support and is integral with the support to form a plate-like body.

2. A sintered titanium plate for hydrogen production by water electrolysis according to claim 1, characterized in that, The mesh of the support member includes one or more of rectangular, hexagonal, or rhomboid shapes.

3. A sintered titanium plate for hydrogen production by water electrolysis according to claim 1, characterized in that, At least a portion of the titanium layer is embedded in the mesh of the support.

4. A sintered titanium plate for hydrogen production by water electrolysis according to claim 1, characterized in that, The titanium layer covers both sides of the support member. One side of the support member is covered with a titanium layer of a first thickness, and the other side is covered with a titanium layer of a second thickness. When the first thickness and the second thickness are different, an asymmetrical structure is formed.

5. A sintered titanium plate for hydrogen production by water electrolysis according to claim 1, characterized in that, The titanium layer comprises a plurality of titanium blocks, and the support member has a plurality of covering areas, wherein the titanium blocks cover the covering areas to form at least a portion of the thickening.

6. A sintered titanium plate for hydrogen production by water electrolysis according to claim 5, characterized in that, The covered area is a preset working surface and / or a high-stress area.

7. A sintered titanium plate for hydrogen production by water electrolysis according to claim 1, characterized in that, The thickness of the plate-like body is 0.01-0.05 mm.

Images