Immersible hydrophilic porous titanium PEM electrolytic bath

Abstract

The invention relates to the technical field of hydrogen-rich water preparation and hydrogen-oxygen mixed gas supply, and discloses an immersible hydrophilic porous titanium PEM electrolytic bath which comprises an anode end plate and a cathode end plate, and the anode end plate and the cathode end plate are detachably connected through a plurality of fastening screws and a plurality of fastening nuts; the electrolysis stack body is located between the anode end plate and the cathode end plate, and the two ends of the electrolysis stack body are insulated and isolated from the anode end plate and the cathode end plate; two ends of the electrolytic pile body respectively extend out of the anode end plate and the cathode end plate and are respectively connected with an anode and a cathode of an external power supply. A sealing structure, a gas conveying pipeline and an external water pump of a traditional PEM electrolytic cell are thoroughly omitted, the advantages that the structure is extremely simplified, the cost is low, and the hydrogen dissolving efficiency is high are achieved, and integration of hydrogen-rich water preparation and hydrogen-oxygen mixed gas supply is achieved through specific material selection and process design; and the convenience and practicability of outdoor use in the plateau are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of hydrogen-rich water preparation and hydrogen-oxygen mixed gas supply technology, and in particular to an immersion-type hydrophilic porous titanium PEM electrolyzer. Background Technology

[0002] With the upgrading of health consumption demands, hydrogen-rich water has potential health value, and its preparation technology is being applied more and more widely. At the same time, the high-altitude tourism market is developing rapidly, and the problem of hypoxia in the high-altitude environment is significant. The demand for portable oxygen extraction devices for outdoor use continues to grow. However, traditional portable oxygen supply devices (such as compressed oxygen cylinders) have defects such as large size, heavy weight, and short battery life, which make it difficult to meet the needs of lightweight and long-lasting use.

[0003] Existing technologies have significant shortcomings: Firstly, traditional hydrogen-rich water preparation often employs built-in PEM electrolyzers, whose porous layers are mostly made of hydrophobic porous materials (such as untreated porous metals). This necessitates forced liquid delivery via external water pumps and involves complex sealing structures such as rubber seals and metal gaskets. This significantly increases equipment complexity and production costs, and also poses safety risks such as hydrogen leakage and gas-liquid cross-contamination due to aging seals. Furthermore, hydrogen must be exported through gas pipelines before dissolving in water via aeration, resulting in a long and inefficient dissolution path, making it difficult to form hydrogen-rich water with stable concentrations. Secondly, existing hydrogen-oxygen mixed gas preparation equipment is mostly designed as a "separate gas production-external mixing" system, requiring additional gas mixing tanks and gas pipelines. This leads to poor equipment portability and an inability to simultaneously prepare hydrogen-rich water, making it unsuitable for the integrated needs of high-altitude tourism scenarios that require both hydrogen-rich water and portable oxygen extraction.

[0004] In summary, there is an urgent need in the current technological field for an innovative solution that can simultaneously address the dual requirements of "efficient preparation of hydrogen-rich water" and "portable oxygen extraction at high altitudes".

[0005] Therefore, there is an urgent need for an immersion-type hydrophilic porous titanium PEM electrolytic cell to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide an immersion-type hydrophilic porous titanium PEM electrolytic cell to solve the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following solution: The present invention provides an immersion-type hydrophilic porous titanium PEM electrolytic cell, located in water, comprising:

[0008] A positive end plate and a negative end plate, wherein the positive end plate and the negative end plate are detachably connected by a number of fastening screws and a number of fastening nuts;

[0009] An electrolytic reactor body is located between the anode end plate and the cathode end plate, and both ends of the electrolytic reactor body are insulated from the anode end plate and the cathode end plate;

[0010] The two ends of the electrolytic reactor extend from the anode end plate and the cathode end plate, respectively, and are connected to the positive and negative terminals of an external power source, respectively.

[0011] According to the present invention, an immersion-type hydrophilic porous titanium PEM electrolytic cell is provided, wherein the electrolytic stack includes a plurality of electrolytic chambers stacked between the anode end plate and the cathode end plate. Each electrolytic chamber includes, from left to right, an anode end plate, an anode flow field network, an anode porous layer, a membrane electrode, a cathode porous layer, a cathode flow field network, and a cathode end plate. The anode end plate is located on one side of the anode end plate and is connected to the positive terminal of an external power supply, and the cathode end plate is located on one side of the cathode end plate and is connected to the negative terminal of an external power supply.

[0012] According to the present invention, an immersion-type hydrophilic porous titanium PEM electrolytic cell is provided, wherein an anode gasket is provided between the anode plate and the cathode plate, and a cathode gasket is provided between the cathode plate and the cathode plate.

[0013] According to the present invention, an immersion-type hydrophilic porous titanium PEM electrolytic cell is provided, wherein the anode end plate, the anode gasket, the cathode gasket and the cathode end plate are all provided with wiring through holes, and one end of the wiring pin is fixedly connected to the anode end plate and the cathode end plate. The other end of the wiring pin extends through the wiring through hole and is provided with a wiring hole, and the wiring hole is connected to an external power source through an electric wire.

[0014] According to the present invention, an immersion-type hydrophilic porous titanium PEM electrolytic cell is provided, wherein both the anode end plate and the cathode end plate are made of aluminum alloy material with a thickness of 0.1mm-2mm.

[0015] According to the present invention, an immersion-type hydrophilic porous titanium PEM electrolytic cell is provided, wherein both the anode pad and the cathode pad are insulating materials.

[0016] According to the present invention, an immersion-type hydrophilic porous titanium PEM electrolytic cell is provided, wherein the anode flow field mesh and the cathode flow field mesh are both titanium meshes with a thickness of 0.1 mm-2 mm and a mesh size of 10-200 mesh.

[0017] According to the present invention, an immersion-type hydrophilic porous titanium PEM electrolytic cell is provided, wherein the thickness of the anode porous layer and the cathode porous layer are both 0.1mm-2mm, and the porosity is 60%-95%.

[0018] According to the present invention, an immersion-type hydrophilic porous titanium PEM electrolyzer is provided, wherein the cathode of the membrane electrode is coated with a Pt / C catalyst and the anode of the membrane electrode is coated with an IrO2 catalyst.

[0019] According to the present invention, an immersion-type hydrophilic porous titanium PEM electrolytic cell is provided, wherein the surface of the fastening screw is provided with an insulating layer.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] This invention provides an immersion-type hydrophilic porous titanium PEM electrolyzer that achieves self-water absorption through the capillary action of hydrophilic porous titanium. It can be directly submerged in water for stable operation, completely avoiding leakage and safety risks caused by aging seals. This simplifies the structure and reduces costs. The electrolytic stack allows hydrogen generated at the cathode to be directly released into the water surrounding the electrolyzer, resulting in a very short dissolution path and high dissolution efficiency, rapidly forming high-concentration hydrogen-rich water. Oxygen generated at the anode naturally mixes with some undissolved hydrogen to form a directly usable hydrogen-oxygen mixture, meeting the integrated needs of high-altitude tourism and other scenarios requiring both hydrogen-rich water and portable oxygen extraction. This invention completely eliminates the need for the sealing structure, gas pipelines, and external water pumps of traditional PEM electrolyzers. It not only boasts advantages such as extremely simplified structure, low cost, and high hydrogen dissolution efficiency, but also achieves integrated "hydrogen-rich water preparation - hydrogen-oxygen mixing and supply" through clear material selection and process design, significantly improving the convenience and practicality for outdoor use at high altitudes. 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 embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the anode end plate structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the wiring pin structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the invention;

[0027] Among them, 1. Fastening screw; 2. Anode end plate; 3. Anode gasket; 4. Electrolytic stack body; 41. Anode plate; 42. Anode flow field mesh; 43. Anode porous layer; 44. Membrane electrode; 45. Wiring pin; 46. Cathode porous layer; 47. Cathode flow field mesh; 48. Cathode plate; 49. Wiring hole; 5. Cathode gasket; 6. Cathode end plate; 7. Fastening nut; 8. Wiring through hole. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and 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] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figures 1-4 This invention provides an immersion-type hydrophilic porous titanium PEM electrolyzer, located in water, comprising:

[0031] Anode plate 2 and cathode plate 6 are detachably connected by a number of fastening screws 1 and a number of fastening nuts 7.

[0032] The electrolytic reactor body 4 is located between the anode plate 2 and the cathode plate 6, and both ends of the electrolytic reactor body 4 are insulated from the anode plate 2 and the cathode plate 6.

[0033] The two ends of the electrolytic reactor 4 extend from the anode plate 2 and the cathode plate 6, respectively, and are connected to the positive and negative terminals of an external power source, respectively.

[0034] In one embodiment of the present invention, self-absorption of water is achieved through the capillary action of hydrophilic porous titanium, allowing for stable operation when directly immersed in water. This completely avoids leakage and safety risks caused by aging of seals, simplifies the structure, and reduces costs. The electrolytic stack 4 allows hydrogen generated at the cathode to be directly released into the water surrounding the electrolytic cell, resulting in a very short dissolution path and high dissolution efficiency. This quickly forms high-concentration hydrogen-rich water. The oxygen generated at the anode naturally mixes with some undissolved hydrogen to form a hydrogen-oxygen mixture that can be directly used. This meets the integrated needs of hydrogen-rich water and portable oxygen release in scenarios such as high-altitude tourism.

[0035] As an optional implementation, the electrolytic stack 4 includes a plurality of electrolytic cells stacked between the anode end plate 2 and the cathode end plate 6. Each electrolytic cell includes, from left to right, an anode electrode 41, an anode flow field network 42, an anode porous layer 43, a membrane electrode 44, a cathode porous layer 46, a cathode flow field network 47, and a cathode electrode 48. The anode electrode 41 is located on one side of the anode end plate 2 and is connected to the positive terminal of an external power supply, while the cathode electrode 48 is located on one side of the cathode end plate 6 and is connected to the negative terminal of an external power supply.

[0036] In one embodiment of the present invention, a structure of several electrolysis chambers stacked together is adopted, which can flexibly increase the gas production rate by increasing the number of chambers to meet the needs of different power and output without changing the basic design, thereby enhancing the scalability of the product. The complete and orderly stacked structure from the electrode plate, flow field network, porous layer to membrane electrode is clearly defined, which ensures the uniformity of current distribution and the smooth transport of reactants / products, thereby improving electrolysis efficiency and service life.

[0037] As an optional implementation, an anode gasket 3 is provided between the anode plate 41 and the anode end plate 2, and a cathode gasket 5 is provided between the cathode plate 48 and the cathode end plate 6.

[0038] In one embodiment of the present invention, the anode gasket 3 and cathode gasket 5 are provided to insulate the anode plate 41 and cathode plate 48 from the anode end plate 2 and cathode end plate 6, thereby preventing the entire tank from becoming energized and short-circuiting.

[0039] As an optional implementation, the anode plate 2, anode gasket 3, cathode gasket 5 and cathode plate 6 are all provided with wiring through holes 8. One end of the wiring pin 45 is fixedly connected to the anode plate 41 and the cathode plate 48. The other end of the wiring pin 45 extends through the wiring through hole 8 and is provided with a wiring hole 49. The wiring hole 49 is connected to an external power source through a wire.

[0040] In one embodiment of the present invention, the cooperation of the wiring pin 45 and the wiring hole 49 provides a stable and reliable external electrical interface for the internal electrode plate, making the power connection convenient and quick. The electrical connection point is guided to the outside of the electrolytic cell, away from the internal humid environment and reaction area, reducing the risk of corrosion or failure of the connection point and improving the reliability and durability of the connection.

[0041] As an optional implementation, both the anode plate 2 and the cathode plate 6 are made of aluminum alloy with a thickness of 0.1mm-2mm.

[0042] In one embodiment of the present invention, aluminum alloy is used to achieve a balance between strength and lightweight, which ensures that the end plate has sufficient mechanical strength to compress the entire electrolytic reactor body, ensuring close contact and minimal resistance between components, while minimizing the overall weight of the equipment.

[0043] As an optional implementation, both the anode gasket 3 and the cathode gasket 5 are made of insulating materials.

[0044] In one embodiment of the present invention, both the anode gasket 3 and the cathode gasket 5 are insulating materials, which isolates the anode plate 41 and the cathode plate 48 from the anode end plate 2 and the cathode end plate 6, preventing the entire tank from becoming energized and short-circuiting.

[0045] As an optional implementation, both the anode flow field mesh 42 and the cathode flow field mesh 47 are titanium meshes with a thickness of 0.1 mm to 2 mm and a mesh size of 10 to 200 meshes.

[0046] In one embodiment of the present invention, the use of corrosion-resistant titanium mesh ensures that the flow field mesh operates stably for a long time in the strong oxidizing and reducing environment of electrolysis.

[0047] As an optional implementation, the thickness of both the anode porous layer 43 and the cathode porous layer 46 is 0.1 mm-2 mm, and the porosity is 60%-95%.

[0048] In one embodiment of the present invention, the high porosity ensures that the porous titanium possesses extremely strong capillary water absorption capacity, enabling it to autonomously and efficiently transport external water to the membrane electrode, thereby completely eliminating the need for an external water pump. The limited thickness range is designed to balance liquid transport resistance, electron conduction paths, and gas evolution paths. A suitable thickness ensures both rapid water supply and high conductivity, while also allowing the generated gas to easily escape, preventing gas blockage and maintaining the continuous and efficient electrolysis reaction.

[0049] As an optional implementation, the cathode of the membrane electrode 44 is coated with a Pt / C catalyst, and the anode of the membrane electrode 44 is coated with an IrO2 catalyst.

[0050] In one embodiment of the present invention, highly efficient and stable catalysts Pt / C and IrO2 for hydrogen evolution reaction and oxygen evolution reaction are selected, which reduces the electrolysis overpotential of the cathode and anode, that is, reduces the voltage required to start and operate the electrolyzer, thereby saving electrical energy under the same gas production and improving the energy conversion efficiency of the entire system.

[0051] As an optional implementation, the surface of the fastening screw 1 is provided with an insulating layer.

[0052] In one embodiment of the present invention, the surface of the fastening screw 1 is insulated to prevent current from passing through the screw and causing a short circuit in the equipment. Specifically, the fastening screw 1 can be insulated by covering its surface with an insulating thermoplastic layer, or it can be made of non-metallic materials, including but not limited to PE, PS, and ceramics.

[0053] This invention provides an immersion-type hydrophilic porous titanium PEM electrolyzer. In use, the entire PEM electrolyzer is immersed in water and connected to the positive and negative terminals of an external power source via two wiring holes 49. The entire PEM electrolyzer can be fixed in position. Water is uniformly transported to the membrane electrode 44 from around the porous layer through capillary action. Electrolysis generates H2 on the cathode side and O2 on the anode side. The generated gases pass through the porous layer into the flow field network and are discharged around the network, entering the aqueous solution and naturally forming a usable hydrogen-oxygen mixture, meeting the portable oxygen extraction needs in high-altitude tourism scenarios.

[0054] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0055] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An immersion-type hydrophilic porous titanium PEM electrolytic cell, located in water, characterized in that, include: A positive end plate (2) and a negative end plate (6) are detachably connected by a plurality of fastening screws (1) and a plurality of fastening nuts (7); The electrolytic reactor (4) is located between the anode plate (2) and the cathode plate (6), and the two ends of the electrolytic reactor (4) are insulated from the anode plate (2) and the cathode plate (6); The two ends of the electrolytic reactor (4) extend from the anode end plate (2) and the cathode end plate (6) respectively, and are connected to the positive and negative terminals of an external power source respectively.

2. The immersion-type hydrophilic porous titanium PEM electrolytic cell according to claim 1, characterized in that: The electrolytic stack (4) includes several electrolytic cells stacked between the anode end plate (2) and the cathode end plate (6). Each electrolytic cell includes, from left to right, an anode end plate (41), an anode flow field network (42), an anode porous layer (43), a membrane electrode (44), a cathode porous layer (46), a cathode flow field network (47), and a cathode end plate (48). The anode end plate (41) is located on one side of the anode end plate (2) and is connected to the positive terminal of an external power supply. The cathode end plate (48) is located on one side of the cathode end plate (6) and is connected to the negative terminal of an external power supply.

3. The immersion-type hydrophilic porous titanium PEM electrolytic cell according to claim 2, characterized in that: An anode gasket (3) is provided between the anode plate (41) and the anode end plate (2), and a cathode gasket (5) is provided between the cathode plate (48) and the cathode end plate (6).

4. The immersion-type hydrophilic porous titanium PEM electrolytic cell according to claim 3, characterized in that: The anode plate (2), anode pad (3), cathode pad (5) and cathode plate (6) are all provided with wiring through holes (8). One end of the wiring pin (45) is fixedly connected to the anode plate (41) and the cathode plate (48). The other end of the wiring pin (45) extends through the wiring through hole (8) and is provided with a wiring hole (49). The wiring hole (49) is connected to an external power source through a wire.

5. The immersion-type hydrophilic porous titanium PEM electrolytic cell according to claim 1, characterized in that: Both the anode plate (2) and the cathode plate (6) are made of aluminum alloy with a thickness of 0.1mm-2mm.

6. The immersion-type hydrophilic porous titanium PEM electrolytic cell according to claim 3, characterized in that: Both the anode pad (3) and the cathode pad (5) are made of insulating materials.

7. The immersion-type hydrophilic porous titanium PEM electrolytic cell according to claim 2, characterized in that: Both the anode flow field mesh (42) and the cathode flow field mesh (47) are titanium meshes with a thickness of 0.1 mm to 2 mm and a mesh size of 10 to 200 meshes.

8. The immersion-type hydrophilic porous titanium PEM electrolytic cell according to claim 2, characterized in that: The thickness of the anode porous layer (43) and the cathode porous layer (46) are both 0.1 mm to 2 mm, and the porosity is 60% to 95%.

9. The immersion-type hydrophilic porous titanium PEM electrolytic cell according to claim 2, characterized in that: The cathode of the membrane electrode (44) is coated with a Pt / C catalyst, and the anode of the membrane electrode (44) is coated with an IrO2 catalyst.

10. The immersion-type hydrophilic porous titanium PEM electrolytic cell according to claim 1, characterized in that: The fastening screw (1) has an insulating layer on its surface.

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