Visual electrolytic cell device for testing membrane material

Abstract

The invention discloses a visual electrolytic cell device for membrane material testing, and belongs to the technical field of laboratory electrolytic testing equipment.The device is composed of an anode assembly, a cathode assembly, a sealing assembly and a fastener, the anode assembly comprises an anode end plate, an anode insulating plate, an anode visual transparent reaction block and an anode electrode, the cathode assembly is correspondingly provided with a cathode end plate, a cathode insulating plate, a cathode visual transparent reaction block and a cathode electrode, the sealing assembly comprises a PTFE sealing gasket and a test object film, and the fastener comprises a reaction block fixing countersunk bolt, an electrolytic bath fixing bolt and an O-shaped ring. A closed electrolysis cavity is formed through specific assembly, and the anode end plate and the cathode end plate are provided with a liquid inlet and a liquid outlet, so that electrolyte circulation is realized; by means of the reaction block made of a transparent material, two-pole bubble precipitation, a fluid flow field and a membrane surface dynamic reaction can be observed in real time.

Description

Technical Field

[0001] This invention relates to the field of laboratory electrolysis testing equipment technology, and more specifically to a visual electrolysis cell device for testing membrane materials. Background Technology

[0002] Under the "dual-carbon" strategy, the production of green hydrogen through water electrolysis using renewable energy is considered an effective way to solve the energy crisis and environmental problems. Hydrogen has flammable and explosive physical and chemical properties, with an extremely wide combustion limit range (4%-75%) and low ignition energy. This makes gas leakage monitoring and safety control a core challenge in the production, storage, and application of hydrogen energy.

[0003] To delve into the microscopic mechanisms of hydrogen evolution, evaluate the catalytic performance of materials, and optimize leak detection techniques, laboratory-scale electrolysis testing is essential. Currently, most commonly used laboratory electrolysis devices are assembled using metal fasteners and sealing gaskets. Their structural design often focuses on sealing and pressure resistance, while neglecting the ability to visualize and observe the reaction process.

[0004] In practical scientific research, this non-visual design brings many inconveniences: researchers cannot directly observe the generation and detachment of bubbles on the electrode surface inside the tank through the fixture, making it difficult to determine whether the reaction is uniform and to capture early signs of electrolyte flow or abnormal leakage in real time. This "blind testing" mode not only increases the difficulty of experimental data analysis but also creates certain blind spots in research involving hydrogen safety. Furthermore, the sealing structure of existing devices is mostly a single gasket design, which is prone to electrolyte leakage and gas leakage during long-term electrolysis, affecting the accuracy and safety of the experiment. At the same time, the assembly method of the electrodes and membrane materials is relatively cumbersome, hindering the rapid replacement of test samples and reducing experimental efficiency. Therefore, developing a visual electrolyzer device that meets laboratory sealing requirements, allows clear observation of reaction dynamics, and is easy to assemble and highly adaptable is of great significance for improving the accuracy and safety of experimental research. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a visualization electrolytic cell device for membrane material testing, which solves the problems of existing laboratory electrolytic devices lacking visualization functions, poor sealing performance, and cumbersome assembly, enabling real-time observation of the electrolysis process and improving the accuracy, safety, and efficiency of experiments.

[0006] This invention provides a visualization electrolytic cell device for membrane material testing, mainly composed of an anode assembly, a cathode assembly, a sealing assembly, and fasteners. The anode assembly includes an anode end plate, an anode insulating plate, an anode visualization transparent reaction block, and an anode electrode. The cathode assembly includes a cathode end plate, a cathode insulating plate, a cathode visualization transparent reaction block, and a cathode electrode. The sealing assembly includes a PTFE sealing gasket and a test membrane. The fasteners include countersunk bolts for fixing the reaction block, electrolytic cell fixing bolts, and O-rings. The anode and cathode visualization transparent reaction blocks are respectively fixed to the anode and cathode end plates by the countersunk bolts. The anode electrode and the first layer of PTFE sealing gasket are sequentially stacked on the inner surface of the anode visualization transparent reaction block, and the cathode electrode and the second layer of PTFE sealing gasket are sequentially stacked on the inner surface of the cathode visualization transparent reaction block. The test membrane is placed between the two layers of PTFE sealing gaskets and located in the sealed central area. The anode and cathode end plates are arranged opposite each other, with the anode and cathode insulating plates respectively placed on their outer sides, and are locked tightly by the electrolytic cell fixing bolts to form a closed electrolytic chamber.

[0007] Optionally, both the anode and cathode visualization transparent reaction blocks are made of transparent material, such as quartz, borosilicate glass, or other transparent materials resistant to electrolyte corrosion.

[0008] Optionally, the PTFE sealing gasket includes a first PTFE sealing gasket and a second PTFE sealing gasket. The two PTFE sealing gaskets are respectively attached to the anode electrode and the cathode electrode. The test object membrane is sandwiched between the two PTFE sealing gaskets, which serves to isolate the reaction chamber and assist in sealing.

[0009] Optionally, both the anode and cathode end plates have two fluid interfaces on their sides, namely a liquid inlet at the bottom and a liquid outlet at the top. The liquid inlet is connected to a circulation pump through a pipeline to form a continuous flow path for electrolyte circulation.

[0010] Optionally, both the anode and cathode end plates are made of high-strength corrosion-resistant alloy materials, such as 316L stainless steel, titanium alloy, or Hastelloy, with a plate thickness of 10mm-20mm, to ensure stable operation of the device within a pressure range of 0.1MPa-1.0MPa.

[0011] Optionally, the anode insulating plate and the cathode insulating plate are made of polyetheretherketone (PEEK) or epoxy resin material, with a thickness of 5mm-8mm and a surface flatness error of no more than 0.02mm, and have both insulation performance and structural support function.

[0012] Optionally, the anode and cathode electrodes are made of platinum sheet, titanium mesh, or carbon paper, with electrode dimensions adapted to the effective sealing area of ​​the PTFE gasket, and electrode surface roughness Ra≤0.8μm to ensure good contact between the electrode and the test object membrane.

[0013] Optionally, the countersunk bolts for fixing the reaction blocks are made of stainless steel with anti-corrosion treatment. The bolt specifications are M6-M10. Each visible transparent reaction block is equipped with 4-6 fixing bolts, which are evenly distributed along the edge of the reaction block to ensure a tight fit between the reaction block and the end plate.

[0014] Optionally, the electrolytic cell fixing bolts are made of high-strength alloy steel, with matching spring washers and flat washers. The bolt specifications are M8-M12, and 8-12 bolts are evenly arranged along the edge of the end plate. The tightening torque is controlled at 15N·m-30N·m to ensure the sealing performance of the electrolytic chamber.

[0015] Optionally, the O-ring is made of fluororubber with a cross-sectional diameter of 2mm-5mm, and is adapted to the sealing groove between the end plate and the insulating plate, and between the reaction block and the end plate. The depth of the sealing groove is 0.6-0.8 times the cross-sectional diameter of the O-ring, ensuring the sealing effect while avoiding damage caused by excessive compression of the O-ring.

[0016] Optionally, the effective observation area of ​​the visualized transparent reaction block is a square structure with a side length of 50mm-100mm and a reaction block thickness of 15mm-25mm. Its inner surface is provided with a positioning groove that matches the electrode size. The depth of the positioning groove is 1.0-1.2 times the electrode thickness, which facilitates the precise installation of the electrode.

[0017] Optionally, the PTFE sealing gasket has a thickness of 1mm-3mm, the shape of the effective sealing area is adapted to the test object membrane, and the edge of the sealing gasket has a rounded transition with a radius of 2mm-5mm to prevent the sealing gasket from tearing during assembly.

[0018] Optionally, both the inlet and outlet are equipped with standard threaded interfaces, with interface specifications of G1 / 4-G1 / 2. The inner side of the interface is provided with a sealing cone surface, and is matched with sealing joints and pipelines to ensure the sealing performance during the electrolyte circulation process.

[0019] Optionally, the device also includes a temperature sensor interface and a pressure sensor interface, which are respectively located on the sides of the anode and cathode end plates. The interface specifications are compatible with the sensor probes, and the temperature and pressure parameters inside the electrolysis chamber can be monitored in real time.

[0020] The beneficial effects of this invention are as follows: By using a visualization reaction block made of transparent materials such as quartz and borosilicate glass, this invention enables real-time observation of the bubble precipitation at the anode and cathode, the fluid flow field, and the dynamic reaction on the membrane surface during electrolysis. This solves the problem of high experimental analysis difficulty caused by the "blind testing" of traditional devices, making it easier for researchers to intuitively obtain reaction data, accurately evaluate the performance of membrane materials and the catalytic effect of electrodes, and improve the scientific nature of experimental research. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a cross-sectional view of the components of the electrolytic cell in Embodiment 1 of the present invention; Figure 2 This is a front view of the electrolytic cell of Embodiment 1 of the present invention; Figure 3 This is an explanation of the liquid inlet / outlet indicator on the side of the electrolytic cell in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the anode visualization transparent reaction block structure of Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the sealing assembly according to Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the overall assembly of the electrolytic cell in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of bubble precipitation observation during the testing process of Embodiment 1 of the present invention.

[0023] In the diagram: 1-Anode end plate, 11-Liquid inlet, 12-Liquid outlet, 13-Temperature sensor interface, 14-Pressure sensor interface; 2-Anode insulating plate; 3-Anode transparent reaction block, 31-Positioning groove; 4-Anode electrode; 5-Cathode end plate, 51-Liquid inlet, 52-Liquid outlet, 53-Temperature sensor interface, 54-Pressure sensor interface; 6-Cathode insulating plate; 7-Cathode transparent reaction block, 71-Positioning groove; 8-Cathode electrode; 9-First PTFE sealing gasket; 10-Second PTFE sealing gasket; 11-Test object membrane; 12-Reaction block fixing countersunk bolt; 13-Electrolytic cell fixing bolt, 131-Spring washer, 132-Flat washer; 14-O-ring. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0025] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] Example 1 refer to Figures 1-3 This embodiment provides a visualization electrolytic cell device for membrane material testing, mainly composed of an anode assembly, a cathode assembly, a sealing assembly, and fasteners. The specific structure and assembly method of each component are as follows: 1. Component Structure Design 1.1 Anode Components The anode assembly includes an anode end plate 1, an anode insulating plate 2, an anode visualization transparent reaction block 3, and an anode electrode 4. The anode end plate 1 is made of 316L stainless steel, with a thickness of 15mm and overall dimensions of 200mm × 200mm × 15mm. Ten bolt holes are evenly distributed along the edge of the plate for securing the electrolytic cell. The side of the anode end plate 1 has two G1 / 4 standard threaded interfaces: a lower inlet 11 and an upper outlet 12. The interfaces have sealing conical surfaces on their inner sides. Additionally, the side of the plate also has a temperature sensor interface 13 and a pressure sensor interface 14 for real-time monitoring of experimental parameters. The anode insulating plate 2 is made of polyetheretherketone (PEEK) material, with a thickness of 6mm. Its dimensions are compatible with the anode end plate 1, and its surface flatness error is controlled within 0.02mm to ensure insulation performance and structural stability. The anode visualization transparent reaction block 3 is made of high borosilicate glass. The effective observation area is a square structure with a side length of 80mm and an overall thickness of 20mm. Its inner surface has a positioning groove 31, the size of which matches the anode electrode 4, and its depth is 1.1 times the thickness of the anode electrode 4, facilitating precise installation of the anode electrode 4. Six countersunk bolt holes are evenly distributed along the edge of the reaction block for fixed connection with the anode end plate 1. The anode electrode 4 is a platinum sheet electrode with dimensions of 75mm × 75mm × 0.1mm and a surface roughness Ra = 0.6μm, ensuring good contact with the test film.

[0027] 1.2 Cathode Assembly The cathode assembly is symmetrical to the anode assembly, including a cathode end plate 5, a cathode insulating plate 6, a cathode visualization transparent reaction block 7, and a cathode electrode 8. The cathode end plate 5 is made of the same 316L stainless steel as the anode end plate 1, with identical dimensions and structure. It also features an inlet 51, an outlet 52, a temperature sensor interface 53, and a pressure sensor interface 54 on its side, ensuring symmetry in electrolyte circulation and parameter monitoring. The cathode insulating plate 6 is made of the same polyetheretherketone (PEEK) material as the anode insulating plate 2, with identical dimensions and thickness, ensuring overall structural balance of the device. The cathode visualization transparent reaction block 7 is made of borosilicate glass, with the same structure as the anode visualization transparent reaction block 3. It has an effective observation area with a side length of 80mm and a thickness of 20mm, and an inner positioning groove 71 for mounting the cathode electrode 8. The cathode electrode 8 is a platinum sheet electrode, the same size and surface treatment as the anode electrode 4, ensuring consistent reaction conditions between the two electrodes.

[0028] 1.3 Sealing Assembly The sealing assembly includes a first PTFE sealing gasket 9, a second PTFE sealing gasket 10, and a test object membrane 11. The first and second PTFE sealing gaskets 9 and 10 have identical structures, both 2mm thick, with an effective sealing area of ​​a 75mm x 75mm square structure, adapted to the electrode size. The gasket edges are rounded with a 3mm radius to prevent tearing during assembly. The edge dimensions of the gaskets are larger than the electrode size to ensure the sealing area covers the periphery of the electrode. The test object membrane 11 is the membrane material to be tested, its size adapted to the effective sealing area of ​​the PTFE sealing gaskets. It is sandwiched between the two PTFE sealing gaskets, serving both to isolate the anode and cathode chambers and to further enhance the sealing effect.

[0029] 1.4 Fasteners Fasteners include countersunk bolts 12 for fixing the reaction block, bolts 13 for fixing the electrolytic cell, and O-rings 14. The countersunk bolts 12 for fixing the reaction block are made of stainless steel with a galvanized anti-corrosion treatment. They are M8×25mm in size, with six bolts evenly distributed along the edge of each transparent reaction block to ensure a tight fit between the reaction block and the end plate. The bolts 13 for fixing the electrolytic cell are made of high-strength alloy steel, M10×50mm in size, and are equipped with spring washers 131 and flat washers 132. Ten bolts are evenly distributed along the edge of the end plate, with a tightening torque controlled at 25 N·m to ensure the sealing performance of the electrolytic chamber. The O-rings 14 are made of fluororubber with a cross-sectional diameter of 3mm. They fit into the sealing grooves between the end plate and the insulating plate, and between the reaction block and the end plate. The sealing groove depth is 2mm (0.67 times the cross-sectional diameter of the O-ring), ensuring a good seal while preventing damage caused by excessive compression of the O-ring.

[0030] 2. Assembly Process 2.1 Anode-side assembly First, place the anode visualization transparent reaction block 3 at the designated position on the anode end plate 1, aligning the bolt holes on the reaction block with the corresponding holes on the anode end plate 1. Then, pass the six reaction block fixing countersunk bolts 12 through the countersunk bolt holes on the reaction block in sequence and tighten them until the reaction block and the anode end plate 1 are tightly fitted together, ensuring no looseness. Next, place the anode electrode 4 in the positioning groove 31 inside the anode visualization transparent reaction block 3, ensuring that the electrode is centered and flat. Finally, cover the surface of the anode electrode 4 with the first layer of PTFE sealing gasket 9, aligning the edge of the sealing gasket with the edge of the positioning groove 31 of the reaction block, completing the anode side assembly.

[0031] 2.2 Cathode-side assembly The cathode side assembly process is the same as the anode side: the cathode visualization transparent reaction block 7 is fixed to the cathode end plate 5 by the reaction block fixing countersunk bolt 12 to ensure a tight fit; the cathode electrode 8 is placed in the positioning groove 71 inside the cathode visualization transparent reaction block 7, with the position centered and flat; the second layer of PTFE sealing gasket 10 is covered on the surface of the cathode electrode 8, with the edges aligned, to complete the cathode side assembly.

[0032] 2.3 Membrane Electrode Assembly The test object membrane 11 is placed between the first PTFE sealing gasket 9 and the second PTFE sealing gasket 10, ensuring that the test object membrane 11 is located in the sealed center area, without offset or wrinkles, and completely covers the effective reaction area of ​​the two electrodes. At this time, the test object membrane 11 and the two PTFE sealing gaskets together form a sealed isolation structure, isolating the anode cavity and the cathode cavity.

[0033] 2.4 Overall Fastening The assembled anode-side assembly and cathode-side assembly are positioned opposite each other, ensuring that the two PTFE gaskets and the test object membrane 11 are tightly fitted together. An anode insulating plate 2 is placed on the outside of the anode end plate 1, and a cathode insulating plate 6 is placed on the outside of the cathode end plate 5, ensuring that the bolt holes on the insulating plates are aligned with the bolt holes on the end plates. The electrolytic cell fixing bolts 13 are passed through the bolt holes of the cathode insulating plate 6, cathode end plate 5, anode end plate 1, and anode insulating plate 2 in sequence. Flat washers 132 and spring washers 131 are then fitted on, and the bolts are gradually tightened using a torque wrench according to the principle of symmetry and uniformity, with the tightening torque controlled at 25 N·m. Finally, a closed electrolytic chamber is formed, completing the assembly of the entire device.

[0034] 3. Fluid circulation and testing operations 3.1 Fluid Circulation System Connection Connect the outlet of the circulation pump to the inlet 11 of the anode plate 1 and the inlet 51 of the cathode plate 5 via a sealed pipeline. Connect the outlet 12 of the anode plate 1 and the outlet 52 of the cathode plate 5 to the electrolyte storage tank via pipelines to form an electrolyte circulation loop. During the connection process, ensure a tight seal between the pipeline and the interface to prevent electrolyte leakage. Inject an appropriate amount of electrolyte (such as a 1 mol / L sulfuric acid solution or a 30% potassium hydroxide solution) into the storage tank, start the circulation pump, and adjust the flow rate to 50 mL / min-200 mL / min to allow the electrolyte to circulate continuously inside the electrolysis chamber and expel air from the chamber.

[0035] 3.2 Test Parameter Setting and Monitoring Connect the anode electrode 4 to the positive terminal of the power supply via a wire, and connect the cathode electrode 8 to the negative terminal of the power supply. Adjust the electrolysis voltage (0V-10V) and current (0A-5A) according to experimental requirements. Connect the corresponding sensors through temperature sensor interfaces 13 and 53 and pressure sensor interface 14 to monitor the temperature and pressure changes inside the electrolysis chamber in real time, ensuring that the temperature is controlled between 25℃ and 80℃ and the pressure is controlled between 0.1MPa and 0.5MPa during the experiment.

[0036] 3.3 Visual Observation During the experiment, researchers can observe the following dynamic processes in real time through the anode visualization transparent reaction block 3 and the cathode visualization transparent reaction block 7: (1) Bubble precipitation behavior: Observe the generation, growth and detachment of bubbles on the surfaces of the anode and cathode electrodes, record parameters such as bubble size distribution, precipitation frequency and rising speed, and analyze the catalytic performance of the electrodes; (2) Fluid flow field status: Observe the flow of electrolyte inside the cavity, judge whether the flow field is uniform, whether there are eddies, dead zones, etc., and evaluate the electrolyte circulation effect; (3) Dynamic reaction of membrane surface: Observe the color change of the surface of the test object membrane 11, whether there is deposit formation, whether there is gas permeation, etc., and evaluate the separation performance, stability and antifouling ability of the membrane material; (4) Leakage monitoring: Observe in real time whether there are any abnormalities such as electrolyte leakage or gas leakage at each sealing part of the device, and promptly detect potential safety hazards.

[0037] Example 2 The difference between this embodiment and Embodiment 1 is that the material and electrode type of the visualized transparent reaction block are different, while the rest of the structure and assembly method are the same.

[0038] In this embodiment, the anode transparent reaction block 3 and the cathode transparent reaction block 7 are made of quartz. Quartz has higher light transmittance and corrosion resistance, making it suitable for testing under strong acid, strong alkali electrolytes, and high temperature conditions. The effective observation area of ​​the reaction block has a side length of 60 mm and a thickness of 25 mm, ensuring structural strength and observation clarity. The anode electrode 4 and the cathode electrode 8 are made of titanium mesh electrodes with a mesh count of 100 mesh and a size of 55 mm × 55 mm. The electrode surface is treated with a platinum coating to enhance catalytic activity, making it suitable for long-term electrolysis testing experiments.

[0039] During the test, the quartz reaction block made the observation of bubble precipitation and membrane surface reaction clearer, and the titanium mesh electrode had good air permeability, which was conducive to the removal of bubbles and improved the accuracy of experimental data; the rest of the test procedures and observation contents were the same as in Example 1, and the sealing performance and stability of the device were also excellent.

[0040] Example 3 The difference between this embodiment and Embodiment 1 lies in the structure of the sealing component and the specifications of the fasteners; the rest of the structure and assembly method are the same.

[0041] In this embodiment, the PTFE sealing gasket is 3mm thick, with an effective sealing area of ​​90mm×90mm and an edge radius of 5mm, suitable for test membranes of larger sizes. A fluororubber sealing strip is added between the edge of the test membrane 11 and the PTFE sealing gasket to further enhance the sealing effect, suitable for testing under high pressure conditions (0.5MPa-1.0MPa). The countersunk bolts 12 for fixing the reaction blocks are M10×30mm, with 4 bolts for each reaction block, distributed along the four corners of the reaction block. The electrolytic cell fixing bolts 13 are M12×60mm, with a total of 8 bolts, and the tightening torque is controlled at 30N·m to ensure sealing stability under high pressure conditions.

[0042] In high-pressure electrolysis testing, the device exhibits excellent sealing performance with no electrolyte leakage or gas leakage. The visualization effect is unaffected by pressure, thus meeting the requirements for membrane material testing under high-pressure conditions.

[0043] The beneficial effects of this invention are as follows: 1. Visualization significantly improves experimental accuracy: This invention uses a visualization reaction block made of transparent materials such as quartz and borosilicate glass to realize real-time observation of bubble precipitation at the anode and cathode, fluid flow field and dynamic reaction on the membrane surface during electrolysis. This solves the problem of high experimental analysis difficulty caused by the "blind testing" of traditional devices, making it easier for researchers to intuitively obtain reaction data, accurately evaluate membrane material performance and electrode catalytic effect, and improve the scientific nature of experimental research.

[0044] 2. Optimized Sealing Structure Ensures Experimental Safety: This invention employs a composite sealing structure of "PTFE sealing gasket + test object membrane + O-ring". The PTFE sealing gasket is tightly fitted to the electrode, and the test object membrane is sandwiched between the two sealing gaskets, serving both isolation and auxiliary sealing functions. The O-ring adapts to the sealing grooves between various components, forming multiple layers of sealing protection. Simultaneously, the end plate is made of high-strength corrosion-resistant alloy material, and the fasteners are tightened to a specific torque, ensuring that there is no electrolyte leakage or gas leakage within the pressure range of 0.1MPa-1.0MPa, effectively avoiding the safety risks caused by hydrogen leakage and improving the safety of the experiment.

[0045] 3. Convenient assembly and strong adaptability: The components of this invention adopt a modular design, with symmetrical structures for the anode and cathode components. The assembly process is clear, and the reaction block is fixed by countersunk bolts. The whole assembly is symmetrically fastened by the electrolytic cell fixing bolts, which facilitates quick assembly and disassembly. The dimensions of the electrodes, sealing gaskets and test object membranes are compatible with each other. Different types of electrodes (platinum sheets, titanium mesh, carbon paper, etc.) and test object membranes can be replaced according to experimental needs, adapting to various membrane material testing scenarios and improving the flexibility and efficiency of the experiment.

[0046] 4. Reasonable structural design that balances practicality and stability: The end plate of this invention is equipped with an inlet, an outlet, and a sensor interface, which can realize electrolyte circulation and real-time monitoring of experimental parameters; the insulating plate is made of high-strength insulating material, which has both insulation performance and structural support function; the specifications and distribution of fasteners have been optimized to ensure the overall structural stability of the device, which can operate stably under different temperature and pressure conditions, extending the service life of the device and making it suitable for long-term experimental research.

[0047] The technical solutions disclosed in this invention have been described above through embodiments. It is believed that those skilled in the art will understand this invention through the description of the above embodiments. Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all implementation methods here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A visualization electrolytic cell device for testing membrane materials, characterized in that, It mainly consists of an anode assembly, a cathode assembly, a sealing assembly, and fasteners. The anode assembly includes an anode end plate, an anode insulating plate, an anode transparent reaction block, and an anode electrode. The cathode assembly includes a cathode end plate, a cathode insulating plate, a cathode transparent reaction block, and a cathode electrode. The sealing assembly includes a PTFE sealing gasket and a test object membrane. The fasteners include countersunk bolts for fixing the reaction block, electrolytic cell fixing bolts, and O-rings. The anode transparent reaction block and the cathode end plate are respectively fixed to the anode end plate and the cathode end plate by the countersunk bolts for fixing the reaction block. The anode electrode and the first layer of PTFE sealing gasket are sequentially stacked on the inner surface of the anode transparent reaction block, and the cathode electrode and the second layer of PTFE sealing gasket are sequentially stacked on the inner surface of the cathode transparent reaction block. The test object membrane is placed between the two layers of PTFE sealing gaskets and is located in the sealing center area. The anode end plate and the cathode end plate are arranged opposite each other, with the anode insulating plate and the cathode insulating plate respectively placed on their outer sides. They are locked tightly by the electrolytic cell fixing bolts to form a closed electrolytic chamber.

2. The visualization electrolytic cell device for membrane material testing according to claim 1, characterized in that, Both the anode and cathode visualization transparent reaction blocks are made of transparent material.

3. The visualization electrolytic cell device for membrane material testing according to claim 1, characterized in that, The PTFE sealing gasket includes a first PTFE sealing gasket and a second PTFE sealing gasket. The two PTFE sealing gaskets are respectively attached to the anode electrode and the cathode electrode. The test object membrane is sandwiched between the two PTFE sealing gaskets, which serves to isolate the reaction chamber and assist in sealing.

4. The visualization electrolytic cell device for membrane material testing according to claim 1, characterized in that, Both the anode and cathode plates have two fluid interfaces on their sides, namely a liquid inlet at the bottom and a liquid outlet at the top. The liquid inlet is connected to a circulation pump through a pipeline to form a continuous flow path for electrolyte circulation.

5. The visualization electrolytic cell device for membrane material testing according to claim 2, characterized in that, The transparent material is quartz, borosilicate glass, or other transparent materials resistant to electrolyte corrosion.

6. The visualization electrolytic cell apparatus for membrane material testing according to claim 1, characterized in that, Both the anode and cathode end plates are made of high-strength, corrosion-resistant alloy materials with a plate thickness of 10mm-20mm, ensuring stable operation of the device within a pressure range of 0.1MPa-1.0MPa.

7. The visualization electrolytic cell apparatus for membrane material testing according to claim 1, characterized in that, The anode and cathode insulating plates are made of polyetheretherketone or epoxy resin, with a thickness of 5mm-8mm and a surface flatness error of no more than 0.02mm, serving both insulation and structural support functions.

8. The visualization electrolytic cell apparatus for membrane material testing according to claim 1, characterized in that, The anode and cathode electrodes are made of platinum sheet, titanium mesh or carbon paper, with a surface roughness Ra≤0.8μm, and the electrode size is adapted to the effective sealing area of ​​the PTFE gasket.

9. The visualization electrolytic cell apparatus for membrane material testing according to claim 1, characterized in that, The reaction block fixing countersunk bolts are set with 4-6 for each visible transparent reaction block, and are evenly distributed along the edge of the reaction block; the electrolytic cell fixing bolts are evenly set with 8-12 along the edge of the end plate, and the tightening torque is controlled between 15 N·m and 30 N·m.

10. The visualization electrolytic cell apparatus for membrane material testing according to claim 1, characterized in that, The effective observation area of ​​the visualized transparent reaction block is a square structure with a side length of 50mm-100mm and a reaction block thickness of 15mm-25mm. Its inner surface is provided with a positioning groove that matches the electrode size.

Images