Elastic mesh, self-supporting electrode, electrolysis assembly, and electrolytic cell

Abstract

An elastic mesh (10), a self-supporting electrode, an electrolysis assembly, and an electrolytic cell. The elastic mesh (10) is formed by weaving metal wires (101) and plastic filaments (102). The elastic mesh (10) comprises a plurality of first raised ribs (103) protruding toward one side and a plurality of second raised ribs (104) protruding toward the opposite side, wherein the first raised ribs (103) and the second raised ribs (104) are alternately connected as an integral structure, so that each side surface of the elastic mesh (10) forms an uneven contact surface.

Description

Elastic mesh, self-supporting electrode, electrolysis assembly and electrolytic cell

[0001] This invention claims priority to Chinese Patent Application No. 2025101155898, filed with the Chinese Patent Office on January 24, 2025, entitled "Elastic Mesh, Self-Supporting Electrode, Electrolysis Assembly and Electrolytic Cell", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of water electrolysis technology, specifically to an elastic mesh, a self-supporting electrode, an electrolysis assembly, and an electrolysis cell. Background Technology

[0003] A conventional electrolyzer structure includes a diaphragm and electrodes arranged on both sides of the diaphragm. The outer surfaces of the electrodes are connected to the plates via a support structure. The support structure is used to electrically connect the electrodes and plates on both sides, and at the same time, it creates a channel for the flow of electrolyte and gas between the electrodes and plates.

[0004] Conventional support structures mainly include three types: nipple structures, plate mesh, and metal braided mesh. The first two are rigid structures integrally formed with the electrode plates or additionally stamped. Due to the axial pressure on the electrode mesh during operation, nipple and plate mesh structures cannot guarantee stable contact with all parts of the electrode mesh, easily leading to poor contact and affecting electrolysis efficiency. The latter is a mesh structure woven from metal wires, which adhere to the electrode plates and electrode mesh on both sides. Because metal wires have a certain degree of elasticity, they can better guarantee contact with the electrode mesh and electrode plates on both sides compared to nipple and plate mesh structures. However, the applicant found in practical applications that the metal braided mesh has low strength and insufficient resilience, and is prone to wire breakage. In particular, due to the fatigue characteristics of metal, gaps will appear in the areas where nickel wires interweave in the metal braided elastic mesh after long-term use under pressure, resulting in increased contact resistance and thus reduced electrolysis efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an elastic mesh, a self-supporting electrode, an electrolysis assembly, and an electrolytic cell to solve the technical problems existing in the prior art where metal braided mesh is used as the support structure between the electrode and the plate. The metal braided mesh has low strength, insufficient resilience, and is prone to wire breakage. After long-term use, gaps are generated between the interwoven nickel wires inside the metal braided mesh, affecting stable contact and thus reducing electrolysis efficiency.

[0006] To achieve the above objectives, the first aspect of the present invention provides an elastic net woven from metal wires and plastic fibers. The elastic net includes a plurality of first protruding ridges protruding to one side and a plurality of second protruding ridges protruding to the opposite side. The first and second protruding ridges are alternately connected to form an integral whole, so that each side surface of the elastic net forms an uneven contact surface.

[0007] In one or more embodiments, the elastic mesh includes several groups of composite filaments arranged sequentially along the Y-axis direction. Each group of composite filaments includes several strands of metal wires and several strands of plastic fiber filaments extending in the X-axis direction with the same orientation. Adjacent composite filaments in the Y-axis direction are connected as a whole.

[0008] In one or more embodiments, the composite filament is a wavy structure extending along the X-axis direction, and includes wave crests and troughs connected alternately in sequence; the wave crests of each group of composite filaments are fitted onto the wave crests of adjacent composite filaments, and the troughs of each group of composite filaments are fitted onto the troughs of adjacent composite filaments.

[0009] In one or more embodiments, the weaving density of the composite yarn is 0.8~1.2 kg / m. 2 The width of the crest and / or trough segments is 8-12 mm.

[0010] In one or more embodiments, the first protrusion extends along a straight line, a broken line, or a curve, and the second protrusion extends in the same direction as the first protrusion.

[0011] In one or more embodiments, the depth of the first ridge and / or the second ridge is 5-7 mm and the width is 6-10 mm.

[0012] In one or more embodiments, the metal wire is a nickel wire or nickel-plated iron wire with a diameter of 0.15 to 0.3 mm.

[0013] In one or more embodiments, the plastic fiber filament is a polytetrafluoroethylene (PTFE) fiber filament, a polyphenylene sulfide (PPS) fiber filament, a polypropylene (PP) fiber filament, or a polysulfone (PSU) fiber filament.

[0014] To achieve the above objectives, a second aspect of the present invention provides a self-supporting electrode, comprising an electrode body and an elastic mesh as described in any of the above embodiments, wherein the elastic mesh is attached to one side of the electrode body.

[0015] In one or more embodiments, the outer edge of the elastic mesh is fixedly disposed to the electrode body.

[0016] In one or more embodiments, the outer edge of the elastic mesh is welded to the electrode body, glued with conductive adhesive, or injection molded.

[0017] In one or more embodiments, the electrode body is a nickel mesh electrode.

[0018] To achieve the above objectives, a third aspect of the present invention provides an electrolysis assembly, including an electrode plate and a self-supporting electrode as described in any of the above embodiments, wherein the electrode plate is arranged on the side of the elastic mesh opposite to the electrode body, and the electrode plate is attached to the elastic mesh.

[0019] To achieve the above objectives, a fourth aspect of the present invention provides an electrolytic cell, including a diaphragm and an electrolytic assembly as described in any of the above embodiments, wherein the electrolytic assembly is arranged on both sides of the diaphragm, and the electrode body of each electrolytic assembly is attached to the diaphragm.

[0020] The advantages of this invention, which differ from existing technologies, are:

[0021] This invention combines metal wires and plastic fiber filaments in a composite weaving process. After subsequent pressing and molding to obtain a wavy elastic mesh structure, the plastic fiber filaments tightly bind the metal wires. This gives the elastic mesh superior strength, resilience, and stability, allowing it to maintain high elasticity even under prolonged use, ensuring stable contact with the electrodes and plates on both sides and effectively improving electrolysis efficiency. Furthermore, the plastic fiber filaments allow for a tighter weave of the metal wires. Compared to a metal mesh with the same weave density, this results in superior conductivity without affecting the channel size, reducing the contact resistance of the elastic mesh and further improving electrolysis efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 is a structural schematic diagram of an embodiment of the elastic net of the present invention;

[0024] Figure 2 is a structural schematic diagram of one embodiment of the elastic net of the present invention after it is unfolded;

[0025] Figure 3 is a schematic diagram of the braiding structure of the composite yarn of the present invention;

[0026] Figure 4 is a schematic diagram of another embodiment of the elastic net of the present invention;

[0027] Figure 5 is a structural schematic diagram of one embodiment of the self-supporting electrode of the present invention;

[0028] Figure 6 is a structural schematic diagram of an embodiment of the electrolysis component of the present invention;

[0029] Figure 7 is a structural schematic diagram of an embodiment of the electrolytic cell of the present invention;

[0030] Figure 8 is a photograph of the elastic mesh of Embodiment 1 of the present invention;

[0031] Figure 9 is a partial detail photograph of the elastic net of Embodiment 1 of the present invention;

[0032] Figure 10 is a photograph of the elastic mesh of Embodiment 2 of the present invention;

[0033] Figure 11 is a photograph of the elastic mesh of Comparative Example 1 of the present invention. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0035] To create a channel for electrolyte and gas flow between the plates and electrodes, a conductive support structure is provided between them. To address the problems of existing papillary and mesh structures used as support structures between the plates and electrodes, the applicant previously developed a metal braided mesh as the support structure. However, in practical applications, it was found that the metal braided mesh support structure suffers from poor contact after prolonged use.

[0036] Specifically, during electrolysis, both the electrode mesh and the electrode plates are subjected to axial pressure. The metal woven mesh needs to undergo repeated compression and resetting operations under axial force. Poor resilience and metal fatigue characteristics can lead to the metal woven mesh failing to reset effectively after prolonged use. There are contact gaps between the interwoven nickel wires in some parts of the metal woven elastic mesh, which affects the electrolysis efficiency. On the other hand, in order to ensure smooth channels and control costs, the weaving density of the metal woven mesh is limited. Under limited density, the internal resistance of the metal woven mesh is high, which affects the electrolysis efficiency.

[0037] To address the aforementioned issues, the applicant has creatively developed a novel elastic mesh. This elastic mesh exhibits significantly superior resilience compared to metal woven mesh, while maintaining effective elasticity even after prolonged use. This ensures stable contact between the elastic mesh and the two side plates and electrodes, thereby guaranteeing electrolysis efficiency.

[0038] Specifically, please refer to Figures 1 to 3. Figure 1 is a structural schematic diagram of an embodiment of the elastic net of the present invention, Figure 2 is a structural schematic diagram of an embodiment of the elastic net of the present invention after it is unfolded, and Figure 3 is a structural schematic diagram of the weaving structure of the composite yarn of the present invention.

[0039] As shown in Figures 1 to 3, the elastic mesh 10 is woven from metal wires 101 and plastic fiber filaments 102. The elastic mesh 10 includes several first ridges 103 protruding to one side and several second ridges 104 protruding to the opposite side. The first ridges 103 and second ridges 104 are alternately connected to form an uneven contact surface on each side of the elastic mesh 10. Understandably, the two sides of the elastic mesh 10 can contact the electrode and the electrode plate 30 respectively, and the electrical connection between the electrode and the electrode plate 30 is achieved through the metal wires 101.

[0040] By weaving metal wire 101 and plastic fiber filament 102 together, and then pressing and molding them to obtain a wave-like elastic mesh 10 structure, the plastic fiber filament 102 can bind the metal wire 101 tightly. On the one hand, this gives the elastic mesh 10 better strength, resilience and stability. Under long-term action, the elastic mesh 10 can still maintain high elasticity, ensuring that it can stably contact the electrodes and plates 30 on both sides, effectively improving the electrolysis efficiency.

[0041] On the other hand, the plastic fiber filaments 102 can weave the metal wires 101 more tightly. Compared with metal woven mesh of the same weaving density, it can achieve better conductivity without affecting the channel size, reduce the contact resistance of the elastic mesh 10, and thus further improve the electrolysis efficiency.

[0042] The weaving method of the metal wire 101 and plastic fiber filament 102 in this invention is described in detail below. In this embodiment, the metal wire 101 and plastic fiber filament 102 are woven together, and their directions are consistent, thereby ensuring that the channel size is not affected by the plastic fiber filament 102. In this embodiment, the elastic net 10 includes several groups of composite filaments 100 arranged sequentially along the Y-axis direction. Each group of composite filaments 100 includes a strand of metal wire 101 and a strand of plastic fiber filament 102 extending in the X-axis direction with consistent directions. Adjacent composite filaments 100 in the Y-axis direction are connected to form an integral woven net.

[0043] Specifically, as shown in Figure 3, in this embodiment, the composite yarn 100 is a wavy structure extending along the X-axis direction, and includes wave crest sections 105 and wave trough sections 106 connected alternately in sequence; the wave crest section 105 of each group of composite yarns 100 is fitted on the wave crest section 105 of the adjacent composite yarns 100, and the wave trough section 106 of each group of composite yarns 100 is fitted on the wave trough section 106 of the adjacent composite yarns 100, thereby forming an overall braided structure.

[0044] Based on the above-mentioned weaving structure, on the one hand, sufficient electrolyte and gas flow channels can be guaranteed, and on the other hand, the high strength and elasticity of the plastic fiber filament 102 can be fully utilized, so that the plastic fiber filament 102 can fully bind the metal wire 101 of the composite filament 100 on both sides, giving the elastic net 10 higher strength and resilience.

[0045] In one embodiment, taking into account both the resilience of the elastic mesh 10 and the unobstructed flow of the gas-liquid channels, the arrangement density of the composite wires 100 can be 0.8~1.2 kg / m². 2 The width of the crest section 105 and the trough section 106 can be 8~12 mm.

[0046] In other embodiments, the arrangement density of the composite wires 100, as well as the width of the crest section 105 and trough section 106 of each composite wire 100, can be adjusted based on the actual working conditions to achieve the effect of this embodiment.

[0047] In addition, in this embodiment, each group of composite filaments 100 consists of one metal wire 101 and one plastic fiber filament 102. In other embodiments, the number of metal wires 101 and plastic fiber filaments 102 can be adjusted based on the actual working conditions. For example, each group of composite filaments 100 can be composed of two metal wires 101 and one plastic fiber filament 102, etc., all of which can achieve the effect of this embodiment.

[0048] In particular, in this embodiment, the metal wires 101 and plastic fiber filaments 102 of each composite filament 100 are arranged in parallel. In some specific application scenarios, the metal wires 101 and plastic fiber filaments 102 can also be twisted together to obtain the composite filament 100, which can also achieve the effect of this embodiment.

[0049] In one embodiment, the metal wire 101 can be a nickel wire or a nickel-plated iron wire with a diameter of 0.15~0.3 mm.

[0050] The plastic fiber filament 102 can be polytetrafluoroethylene (PTFE) fiber filament, polyphenylene sulfide (PPS) fiber filament, polypropylene (PP) fiber filament, or polysulfone (PSU) fiber filament with a diameter of 0.10~0.25 mm, all of which can achieve the effect of this embodiment.

[0051] Please refer to Figure 1. In this embodiment, the first protruding ridge 103 and the second protruding ridge 104 extend along a straight line. In other embodiments, the first protruding ridge 103 and the second protruding ridge 104 may not extend along a straight line. For example, please refer to Figure 4, which is a structural schematic diagram of another embodiment of the elastic net of the present invention.

[0052] As shown in Figure 4, in this embodiment, the first protruding ridge 103 and the second protruding ridge 104 extend along a V-shaped zigzag line, which helps to improve the support strength of the elastic net.

[0053] Of course, in other embodiments, the first protruding ridge 103 and the second protruding ridge 104 can also be extended along other paths, such as along wavy lines or other curves, etc., as long as the extension direction of the first protruding ridge 103 and the second protruding ridge 104 is the same, all of which can achieve the effect of this embodiment.

[0054] For convex structures with different extension directions, the structure of the pressing mold during production can be changed accordingly, which can realize the rapid pressing and forming of elastic mesh 10 with different convex direction.

[0055] In order to ensure the elasticity of the elastic mesh 10 and to match the channel requirements of the electrolytic cell, in one embodiment, the depth of the first protrusion 103 and the second protrusion 104 can be 5~7mm and the width can be 6~10mm.

[0056] The present invention also provides a self-supporting electrode. Please refer to Figure 5, which is a schematic diagram of one embodiment of the self-supporting electrode of the present invention. As shown in Figure 5, the self-supporting electrode includes an electrode body 20 and an elastic mesh 10 of any of the above embodiments, wherein the elastic mesh 10 is attached to one side of the electrode body 20.

[0057] In this embodiment, the electrode body 20 and the elastic mesh 10 are matched circular structures. In other embodiments, the structures of the electrode body 20 and the elastic mesh 10 can be adjusted according to actual needs to ensure that their shapes are consistent and fit together, thus achieving the effect of this embodiment.

[0058] In one embodiment, the electrode body 20 can be a nickel mesh electrode. In other embodiments, the electrode body 20 can be any material that can be applied to the water electrolysis electrode, and all of these can achieve the effects of this embodiment.

[0059] To ensure stable adhesion between the electrode body 20 and the elastic mesh 10, and to maintain the integrity of the overall structure, in this embodiment, the outer edge of the elastic mesh 10 is also fixedly disposed with the electrode body 20. In one embodiment, the outer edge of the elastic mesh 10 can be fixed to the electrode body 20 by welding. In another embodiment, the outer edge of the elastic mesh 10 can also be fixed to the electrode body 20 as a whole by conductive adhesive. Both can achieve the effect of this embodiment.

[0060] It should be noted that in some application scenarios, when a support structure for pressing the elastic net 10 to the electrode body 20 is also arranged in the electrolytic cell, the elastic net 10 may not be fixed to the electrode body 20; or, in other embodiments, the elastic net 10 may be fixed to the electrode body 20 at other positions, such as the center position of the elastic net 10, and the effect of this embodiment can be achieved.

[0061] The present invention also provides an electrolysis assembly, as shown in Figure 6, which is a schematic diagram of one embodiment of the electrolysis assembly of the present invention. As shown in Figure 6, the electrolysis assembly includes an electrode plate 30 and a self-supporting electrode of any of the above embodiments.

[0062] The electrode plate 30 is arranged on the side of the elastic mesh 10 away from the electrode body 20, and the electrode plate 30 is attached to the elastic mesh 10.

[0063] In this embodiment, the electrode plate 30 can be any material commonly used in the art, such as carbon steel, nickel and other metal materials, and is not limited here.

[0064] The electrolysis assembly of this embodiment uses an elastic mesh 10 structure woven from metal wire 101 and plastic fiber filament 102, which can ensure stable contact between the elastic mesh 10 and the electrode plate 30 and the electrode body 20 at all points after long-term use, so that the current distribution is uniform and the electrolysis efficiency is guaranteed.

[0065] The present invention also provides an electrolytic cell, as shown in Figure 7, which is a structural schematic diagram of one embodiment of the electrolytic cell of the present invention. As shown in Figure 7, the electrolytic cell includes a diaphragm 40 and the electrolysis components of any of the above embodiments.

[0066] In this configuration, a pair of electrolysis components are symmetrically arranged on both sides of the diaphragm 40, and the electrode body 20 of the electrolysis components is attached to the diaphragm 40.

[0067] In one embodiment, the diaphragm 40 can be a conventional PPS diaphragm; in other embodiments, the diaphragm 40 can also be made of any material applicable to the water electrolysis cell, all of which can achieve the effect of this embodiment.

[0068] The electrolytic cell of this embodiment employs an elastic mesh 10 structure co-woven from metal wires 101 and plastic fiber filaments 102. Compared to a metal woven mesh, the elastic mesh 10 is less prone to wire breakage, effectively reducing the probability of damage to the diaphragm 40. Furthermore, the applicant unexpectedly discovered during experiments that the contact resistance of the elastic mesh 10 is significantly lower than that of a metal woven mesh of the same weaving density, indicating higher conductivity and higher electrolytic cell efficiency. This is likely because the plastic fiber filaments 102 bind the metal wires 101 more tightly, effectively reducing the contact resistance.

[0069] It should be noted that this embodiment only shows the electrolytic cell structure with a single diaphragm 40. In other embodiments, the electrolytic cell may also include any number of diaphragms 40 arranged at intervals. Each diaphragm 40 can have an electrolytic component of any of the above embodiments arranged on both sides. The electrode plates 30 of the electrolytic components located at both ends of the electrolytic cell are the positive electrode plate 30 and the negative electrode plate 30, respectively. The electrode plate 30 of the electrolytic component located in the middle of the electrolytic cell may be a bipolar plate 30.

[0070] The effects of the technical solution of the present invention will be further explained in detail below with reference to specific embodiments.

[0071] Example 1:

[0072] An electrolytic cell includes a diaphragm and electrolytic components arranged on both sides of the diaphragm. Each electrolytic component includes an electrode body, an elastic mesh, and an electrode plate arranged sequentially in a direction away from the diaphragm.

[0073] The diaphragm is a 0.8 mm thick PPS diaphragm, the electrode body is a 46-mesh 0.25 mm diameter twill nickel mesh, and the electrode plate is a nickel-plated carbon steel plate.

[0074] The weaving method of the elastic net is shown in Figure 4. The structure of the elastic net can be seen in Figures 8 and 9. Figure 8 is a photograph of the elastic net of Embodiment 1 of the present invention, and Figure 9 is a partial detail photograph of the elastic net of Embodiment 1 of the present invention. The elastic net includes multiple sets of composite filaments extending along the X-axis direction connected sequentially in the Y-axis direction. Each set of composite filaments 100 includes a nickel wire with a diameter of 0.19 mm and a polytetrafluoroethylene fiber with a diameter of 0.19 mm. The weaving density of the composite filaments is 1 kg / m. 2 Each composite filament has a peak width of 12mm and a trough width of 8mm.

[0075] The first and second protruding edges of the elastic mesh extend along a V-shaped zigzag line, with a width of 10.0 mm and a depth of 7 mm.

[0076] Example 2:

[0077] An electrolytic cell, with a structure basically the same as that in Example 1, differs in that:

[0078] In Embodiment 2, the first and second protruding ridges of the elastic mesh extend along a straight line, and the weaving method is shown in Figure 1. The width of the first and second protruding ridges is 10.0 mm, and the depth is 6.0 mm. The structure of the elastic mesh in Embodiment 2 can be seen in Figure 10, which is a photograph of the elastic mesh of Embodiment 2 of the present invention.

[0079] Example 3:

[0080] An electrolytic cell, with a structure basically the same as that in Example 1, differs in that:

[0081] In Example 3, the first and second protruding ridges of the elastic mesh extend along the corrugated curve, with the width of the first and second protruding ridges being 10 mm and the depth being 5.5 mm.

[0082] Comparative Example 1:

[0083] An electrolytic cell, with a structure basically the same as that in Example 1, differs in that:

[0084] The elastic mesh of Comparative Example 1 did not contain any plastic fiber filaments, and all other parameters were the same as those of the elastic mesh of Example 1. The structure of the elastic mesh of Comparative Example 1 can be seen in Figure 11, which is a photograph of the elastic mesh of Comparative Example 1 of the present invention.

[0085] Example 1: Mechanical Property Analysis

[0086] Mechanical properties of the elastic nets in Examples 1 to 3 and Comparative Example 1 were analyzed. The analysis method was in accordance with "GBT 24442.1-2009 Determination of compressibility properties of textiles - Part 1: Constant method". The elastic nets were subjected to a shape-fixing elasticity test to measure the initial wave height and light pressure wave height T0. At the same time, the wave pressure and resistance of the elastic nets at a thickness of 4 mm were measured, and the compressibility elasticity of the elastic nets was further measured. The data in the table below are obtained.

[0087]

[0088] As shown in the table above, the compressibility of Examples 1 to 3 is better than that of Comparative Example 1. The elastic meshes of Examples 1 to 3 are less prone to deformation under external force and can ensure stable contact when applied between the electrode body and the electrode plate. This is because the elasticity of the plastic fiber gives the elastic mesh better strength, resilience and stability. The elastic mesh can still maintain high elasticity under long-term action.

[0089] Furthermore, the elastic meshes of Examples 1 to 3, when compressed to a thickness of 4 mm, exhibited significantly lower resistance than Comparative Example 1. This is due to the elasticity of the plastic fiber filaments, which weaves the metal wires more tightly, thereby effectively improving conductivity.

[0090] Example of effect 2:

[0091] The electrolytic cells of Examples 1 to 3 and Comparative Example 1 were subjected to electrical performance tests, and the electrolytic cells were measured at 5000 A / m. 2 The cell voltage between the two plates at current density, and at 2000 A / m 2 The energy consumption at current density is shown in the table below.

[0092]

[0093] As shown in the table above, the cell voltage and energy consumption of Examples 1 to 3 are all lower than those of Comparative Example 1. This indicates that the elastic mesh of Examples 1 to 3 has better conductivity. This is because the elasticity of the plastic fiber filaments makes the metal wires weave more tightly, thereby effectively improving the conductivity.

[0094] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0095] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An elastic net, characterized in that, The elastic mesh, woven from metal wires and plastic fibers, includes a plurality of first ridges protruding to one side and a plurality of second ridges protruding to the opposite side. The first and second ridges are alternately connected to form an integral whole, so that each side surface of the elastic mesh forms an uneven contact surface.

2. The elastic net according to claim 1, characterized in that, The elastic mesh includes several groups of composite filaments arranged sequentially along the Y-axis. Each group of composite filaments includes several strands of metal wires and several strands of plastic fiber filaments extending in the X-axis direction with the same orientation. Adjacent composite filaments in the Y-axis direction are connected as a whole.

3. The elastic net according to claim 2, characterized in that, The composite filament is a wavy structure extending along the X-axis, and includes wave crests and troughs connected alternately in sequence; the wave crests of each group of composite filaments are fitted onto the wave crests of adjacent composite filaments, and the troughs of each group of composite filaments are fitted onto the troughs of adjacent composite filaments.

4. The elastic net according to claim 3, characterized in that, The weaving density of the composite yarn is 0.8~1.2 kg / m. 2 The width of the crest and / or trough segments is 8-12 mm.

5. The elastic net according to claim 1, characterized in that, The first protruding ridge extends along a straight line, a broken line, or a curve, and the second protruding ridge extends in the same direction as the first protruding ridge.

6. The elastic net according to claim 1, characterized in that, The depth of the first protruding ridge and / or the second protruding ridge is 5~7 mm, and the width is 6~10 mm.

7. The elastic net according to claim 1, characterized in that, The metal wire is a nickel wire or nickel-plated iron wire with a diameter of 0.15~0.3 mm.

8. The elastic net according to claim 1, characterized in that, The plastic fiber filaments are polytetrafluoroethylene (PTFE) fiber filaments, polyphenylene sulfide (PPS) fiber filaments, polypropylene (PP) fiber filaments, or polysulfone (PSU) fiber filaments with a diameter of 0.10~0.25 mm.

9. A self-supporting electrode, characterized in that, It includes an electrode body and an elastic mesh as described in any one of claims 1 to 8, wherein the elastic mesh is attached to one side of the electrode body.

10. The self-supporting electrode according to claim 9, characterized in that, The outer edge of the elastic mesh is fixedly disposed to the electrode body.

11. The self-supporting electrode according to claim 10, characterized in that, The outer edge of the elastic mesh is fixed to the electrode body by welding, adhesive bonding, or injection molding.

12. The self-supporting electrode according to claim 9, characterized in that, The electrode body is a nickel mesh electrode.

13. An electrolysis assembly, characterized in that, It includes an electrode plate and a self-supporting electrode as described in any one of claims 9 to 12, wherein the electrode plate is arranged on the side of the elastic mesh opposite to the electrode body, and the electrode plate is attached to the elastic mesh.

14. An electrolytic cell, characterized in that, The device includes a diaphragm and an electrolysis assembly as described in claim 13, wherein the electrolysis assembly is arranged on both sides of the diaphragm, and the electrode body of each electrolysis assembly is attached to the diaphragm.

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