Detection device for electro-catalysis hydrogen evolution material
By designing a sealed cover and electrode rod mounting components to isolate external air, and combining this with a laser displacement sensor to achieve automated hydrogen quantity detection, the problems of impurity interference and human error in traditional devices are solved, thus improving the accuracy and safety of detection of electrocatalytic hydrogen evolution materials.
Patent Information
- Application Number
- CN202511844892.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-02-13
AI Technical Summary
Traditional electrocatalytic hydrogen evolution material detection devices cannot effectively isolate external air, leading to impurities interfering with the detection results. Furthermore, they are cumbersome to operate, prone to human error, and difficult to achieve real-time continuous monitoring. Instable electrode connections also affect reaction stability and detection accuracy.
A detection device was designed, comprising a sealing cap, an electrode rod mounting component, an oxygen collection mechanism, and a detection mechanism. Through a multi-layer sealing structure, it isolates the outside air, realizes automated hydrogen quantity detection, ensures stable electrode connection and gas purity, and uses a laser displacement sensor to calculate the hydrogen production in real time.
It improves the accuracy and reliability of detection results, reduces human error, enables real-time continuous monitoring, ensures the stability of electrode connections and gas purity, and enhances experimental safety and data accuracy.
Smart Images
Figure CN121521676A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electrochemical detection technology, specifically to a detection device for electrocatalytic hydrogen evolution materials. Background Technology
[0002] Electrocatalytic hydrogen evolution materials are a class of materials that can accelerate the reduction of water molecules or hydrogen ions to generate hydrogen gas in an electrochemical environment by lowering the reaction activation energy. With the increasing demand for hydrogen energy as a clean energy source, the performance evaluation of electrocatalytic hydrogen evolution materials has become particularly important. However, traditional electrocatalytic hydrogen evolution material detection devices still have many problems in practical applications. Traditional detection devices cannot guarantee complete isolation between the electrolytic cell and the external environment during use. Outside air can easily penetrate into the reaction system, and impurities such as oxygen and carbon dioxide in the air can interfere with the detection process, affecting the accuracy of material activity assessment. At the same time, oxygen and water vapor in the air may also cause oxidation and corrosion of hydrogen evolution materials on the electrode surface, resulting in a decrease in material activity and failing to accurately reflect the actual stability and resistance to poisoning of the material. This detection interference caused by air pollution significantly reduces the reliability of experimental data. Traditional detection devices often rely on manual reading of the gas measuring tube scale to determine the amount of hydrogen evolution. This is cumbersome and prone to human error, making it difficult to achieve real-time, continuous dynamic monitoring. The detection accuracy and efficiency are low. Furthermore, the electrode installation structure of traditional detection devices is mostly designed with fixed dimensions, resulting in poor adaptability. The connection method between the electrode and the wire is unstable, which can easily generate contact resistance, leading to uneven current transmission and further affecting the stability of the reaction and the accuracy of the detection data. Summary of the Invention
[0003] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a detection device for electrocatalytic hydrogen evolution materials, comprising: The system consists of a base plate and an electrolytic cell fixed on top of it. The electrolytic cell holds the electrolyte solution and provides a site for the electrocatalytic hydrogen evolution reaction. Hydrogen and oxygen are generated on both sides. An operation panel is fixedly installed on the top of the base plate. A power supply is fixedly installed on the outer surface of the electrolytic cell. Both the positive and negative terminals of the power supply are connected to wires. Electrode rods are fixedly installed at the ends of the wires. The power supply provides direct current for the electrolysis process. The positive terminal is connected to the anode, and the negative terminal is connected to the cathode. The wires connect the power supply to the electrode rods to transmit current. Sealing covers are detachably installed on both sides of the top of the electrolytic cell, and oxygen and hydrogen outlets are respectively provided on the two sealing covers. The electrode rod mounting bracket is used to install and fix the working electrode and the counter electrode, ensuring that the electrode position is stable and in good contact with the electrolyte. The working electrode is specifically an electrode rod coated with hydrogen evolution material, which serves as the cathode of the reaction to carry out the hydrogen evolution reaction. The catalytic performance of the hydrogen evolution material is evaluated by detecting the amount of hydrogen produced. The sealing cover can effectively isolate the inside of the electrolytic cell from the outside air, thereby preventing impurities such as air from entering the electrolyte and avoiding their interference with the electrocatalytic hydrogen evolution reaction or oxidation and corrosion of the electrode material, ensuring a stable experimental environment and improving the accuracy of the detection results. An oxygen collection mechanism is installed on the outer surface of the electrolytic cell and is used to collect oxygen generated during electrolysis. The detection mechanism is installed on the top of the base plate and is positioned opposite the oxygen collection mechanism on both sides of the electrolytic cell. The detection mechanism is used to detect the amount of hydrogen produced by electrolysis. The detection mechanism includes a hydrogen storage tank and a displacement component. The hydrogen storage tank initially stores hydrogen gas supplied from the electrolytic cell. A support leg is fixedly installed at the bottom of the hydrogen storage tank, and a delivery pipe is fixedly installed at the center of the bottom of the hydrogen storage tank. A laser displacement sensor is installed through the bottom of the hydrogen storage tank, and guide rods are fixedly installed on both sides of the inner cavity of the hydrogen storage tank. The displacement component is slidably installed on the outer surface of the guide rods, and the guide rods guide the displacement component to slide up and down to prevent tilting. The displacement component moves as the hydrogen pressure rises. The laser displacement sensor detects the position change of the displacement component in real time and then calculates the volume of hydrogen gas. A vent is opened at the top of the hydrogen storage tank to balance the gas pressure above the displacement component.
[0004] Preferably, the electrode rod mounting components are fixedly installed on both sides of the bottom of the electrolytic cell cavity. A U-shaped partition is fixedly installed in the middle of the electrolytic cell cavity. The sealing cover is set on both sides of the top of the U-shaped partition. The U-shaped partition divides the electrolytic cell cavity into left and right chambers to prevent hydrogen and oxygen from mixing, thereby improving gas purity and experimental safety. An observation window is fixedly installed on the outer surface of the electrolytic cell away from the power source. The observation window facilitates observation of phenomena such as bubble generation and liquid level changes during the electrolysis process.
[0005] Preferably, the number of support legs is three, and the three support legs are evenly distributed along the axis of the hydrogen storage tank. The support legs are fixedly installed on the top of the base plate, and the delivery pipe is connected to the hydrogen outlet of the sealing cap.
[0006] Preferably, the guide rods are disposed on both sides of the displacement member, and a buffer spring is fixedly connected between the displacement member and the top of the inner cavity of the hydrogen storage tank. The buffer spring is sleeved on the outer surface of the guide rod, and the displacement member is sealed and adapted to the inner wall of the hydrogen storage tank. A push tube is fixedly installed inside the vent hole. The bottom end of the push tube is set as a cone, and the push tube is squeezed and adapted to the axis of the displacement member. When the displacement member moves upward under the action of hydrogen pressure, the displacement member contacts and is squeezed by the push tube. The lower end of the push tube has a cone-shaped structure. As the displacement member continues to rise, the cone surface gradually squeezes the displacement member to form a venting channel, which facilitates the hydrogen generated by electrolysis to enter the push tube through the channel.
[0007] Preferably, the displacement component includes a sliding plate, which is slidably mounted on the outer surface of the guide rod. The sliding plate is sealed and adapted to the inner wall of the hydrogen storage tank. An installation hole is provided at the axis of the sliding plate, and a flexible seal is fixedly installed inside the installation hole. The flexible seal maintains the seal between the sliding plate and the push tube.
[0008] Preferably, the flexible sealing element includes a fixed ring and a rubber ring. The fixed ring is fixedly installed on the inner wall of the mounting hole, and the rubber ring is disposed on the inner side of the fixed ring. An annular connecting piece is fixedly connected between the fixed ring and the rubber ring. In the initial state, the rubber ring is in a closed state with a very small aperture, preventing gas from passing through, thereby ensuring the airtightness of the hydrogen storage tank. When the displacement element moves upward under the action of hydrogen pressure, the rubber ring contacts and is squeezed against the top push tube. The conical surface at the lower end of the push tube gradually expands the central opening of the rubber ring, forming a ventilation channel. At this time, the annular connecting piece stretches, and the hydrogen generated by electrolysis can enter the push tube through this channel and be transported to the subsequent gas storage device.
[0009] Preferably, the electrode rod mounting component includes a mounting plate, which is fixedly mounted at the bottom of the inner cavity of the electrolytic cell. A mounting sleeve and a support spring are fixedly mounted on the top of the mounting plate. The mounting sleeve is used to insert the electrode rod, and the support spring is located at the axis of the mounting sleeve.
[0010] Preferably, a stop ring is fixedly installed on the inner wall of the mounting sleeve, and a top block is fixedly installed on the top of the support spring. The support spring pushes the top block upward, so that the electrode rod is in close contact with the top block. A clamping piece is fixedly installed on the bottom edge of the top block. The clamping pieces are evenly distributed along the axis of the top block. The outer curved surface of the clamping piece is pressed and adapted to the stop ring. The stop ring presses the clamping piece to clamp the electric shock rod. Both the top block and the clamping piece are made of metal material with good conductivity. The top block is in direct contact with the bottom of the electrode rod, and the clamping piece holds the side wall of the electrode rod to ensure a stable electrical connection between the electrode rod and the wire.
[0011] Preferably, the sealing cover includes a cover plate, and an installation frame is fixedly installed at the bottom of the cover plate. The installation frame is inserted into the top of the electrolytic cell to improve sealing stability. A sealing strip is fixedly installed on the outer side of the installation frame. The sealing strip is evenly distributed on the outer side of the installation frame. The sealing strip enhances the sealing performance between the cover plate and the electrolytic cell, preventing impurities in the air from entering the electrolyte and interfering with the electrocatalytic hydrogen evolution reaction. Handles are fixedly installed on both sides of the top of the cover plate, which facilitates the removal and placement of the sealing cover.
[0012] Preferably, the oxygen collection mechanism includes a fixed frame and an oxygen collection pipe. The fixed frame is fixedly installed on the side of the electrolytic cell, and the oxygen collection pipe is detachably installed on the inner side of the fixed frame. The oxygen collection pipe is used to contain the collected oxygen. A fixing ring plug is installed at the open end of the oxygen collection pipe, and an oxygen delivery hose is installed inside the fixing ring plug. The oxygen delivery hose is connected to the oxygen outlet of the sealing cap and is used to introduce oxygen into the oxygen collection pipe.
[0013] This invention provides a detection device for electrocatalytic hydrogen evolution materials. It has the following advantages: (i) The detection device for electrocatalytic hydrogen evolution materials, through the setting of the sealing cover, the mounting frame and the sealing strip form a multi-seal structure, which effectively isolates the outside air, prevents impurities such as oxygen and carbon dioxide from entering the electrolyte and affecting the experimental results, and prevents air pollution from affecting the detection results. The handle design facilitates the quick installation and removal of the sealing cover, improves the efficiency of experimental operation, and the design of the sealing cover ensures the stability of the experimental environment and improves the reliability of the data.
[0014] (II) This detection device for electrocatalytic hydrogen evolution materials, through its detection mechanism, directs hydrogen generated by electrolysis into a hydrogen storage tank via a delivery pipe. The increased pressure inside the tank pushes a displacement element upwards along a guide rod. A laser displacement sensor detects the positional changes of the displacement element in real time. Combined with the cross-sectional area of the hydrogen storage tank, the hydrogen production quantity and rate are accurately calculated. The guide rod ensures smooth movement of the displacement element, avoiding measurement errors caused by tilting. The detection mechanism automates the process from gas collection to data output, eliminating the need for manual intervention and significantly improving measurement accuracy and efficiency.
[0015] (III) The detection device for electrocatalytic hydrogen evolution materials is designed with a flexible seal and a push tube. In the initial state, the central hole of the rubber ring is closed to ensure the high airtightness of the hydrogen storage tank and prevent gas leakage and air infiltration. When the hydrogen pressure reaches a certain value, the displacement element rises, causing the rubber ring to contact the conical lower end of the push tube and be opened to form a ventilation channel. After the reaction is completed, the rubber ring automatically returns to the closed state to keep the system sealed. This design not only avoids the complexity and potential leakage risk of traditional valve structures, but also realizes automatic airflow control, improving the reliability and service life of the device.
[0016] (iv) The detection device for electrocatalytic hydrogen evolution materials, through the setting of the electrode rod mounting part, the support spring pushes the top block upward, so that the bottom of the electrode rod is in close contact with the top block. At the same time, the clamping plate generates a uniform lateral clamping force under the action of the abutment ring. Both the top block and the clamping plate are made of conductive metal materials, which ensures low-resistance electrical connection. This not only improves the stability of electrode installation, but also adapts to electrode rods of different diameters, reduces measurement errors caused by contact resistance, and ensures the accuracy of experimental data.
[0017] (v) The detection device for electrocatalytic hydrogen evolution materials, through the setting of the U-shaped partition, divides the electrolytic cell into left and right chambers. Hydrogen and oxygen are generated on the two sides respectively and discharged through their respective outlets. The U-shaped partition design effectively prevents the mixing of the two gases, improves the purity of the product gas, and avoids the safety hazards that may be caused by the mixing of hydrogen and oxygen. The setting of the U-shaped partition realizes the separate collection and treatment of the two gases, ensuring the safety of the experiment. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the appearance of the present invention; Figure 3 This is a schematic diagram of the electrolytic cell structure of the present invention; Figure 4 This is a partial cross-sectional view of the electrolytic cell of the present invention; Figure 5 This is a cross-sectional view of the electrode rod mounting component of the present invention; Figure 6 This is a schematic diagram of the sealing cap structure of the present invention; Figure 7 This is a schematic diagram of the oxygen collection mechanism of the present invention; Figure 8 This is a schematic diagram of the detection mechanism of the present invention; Figure 9 This is a partial cross-sectional view of the testing mechanism of the present invention; Figure 10 This is a schematic diagram of the displacement component structure of the present invention; Figure 11 This is a schematic diagram of the flexible sealing element structure of the present invention.
[0019] In the diagram: 1. Base plate; 2. Electrolytic cell; 3. Electrode rod mounting component; 31. Mounting plate; 32. Mounting sleeve; 33. Top block; 34. Support spring; 35. Clamping plate; 36. Abutment ring; 4. Sealing cover; 41. Cover plate; 42. Mounting frame; 43. Sealing strip; 44. Handle; 5. Oxygen collection mechanism; 51. Fixing frame; 52. Oxygen collection pipe; 53. Fixing ring plug; 54. Oxygen delivery hose; 6. Detection mechanism; 61. Hydrogen storage. 62. Tank; 63. Support leg; 64. Conveying pipe; 65. Laser displacement sensor; 66. Displacement component; 67. Sliding plate; 68. Mounting hole; 69. Flexible seal; 60. Fixing ring; 61. Rubber ring; 62. Annular connecting piece; 63. Guide rod; 64. Buffer spring; 65. Vent hole; 66. Push tube; 7. Observation window; 8. Operation panel; 9. U-shaped partition; 10. Wire; 11. Power supply. Detailed Implementation
[0020] 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.
[0021] For the first embodiment, please refer to... Figure 1-4 The present invention provides a technical solution: a detection device for electrocatalytic hydrogen evolution materials, comprising: The base plate 1 and the electrolytic cell 2 fixed on top of it are used to hold the electrolyte solution and provide a place for the electrocatalytic hydrogen evolution reaction. Hydrogen and oxygen are generated on both sides respectively. An operation panel 8 is fixedly installed on the top of the base plate 1. A power supply 11 is fixedly installed on the outer surface of the electrolytic cell 2. The positive and negative terminals of the power supply 11 are connected to wires 10. Electrode rod mounting parts 3 are fixedly installed at the ends of the wires 10. The power supply 11 provides DC current for the electrolysis process. The positive terminal is connected to the anode and the negative terminal is connected to the cathode. The wires 10 connect the power supply 11 and the electrode rod mounting parts 3 to transmit current. Sealing covers 4 are detachably installed on both sides of the top of the electrolytic cell 2. The two sealing covers 4 are respectively provided with oxygen outlet and hydrogen outlet. The electrode rod mounting component 3 is used to install and fix the working electrode and the counter electrode, ensuring that the electrode position is stable and in good contact with the electrolyte. The working electrode is specifically an electrode rod coated with hydrogen evolution material, which serves as the cathode of the reaction to carry out the hydrogen evolution reaction. The catalytic performance of the hydrogen evolution material is evaluated by detecting the amount of hydrogen produced. The sealing cover 4 can effectively isolate the inside of the electrolytic cell 2 from the outside air, thereby preventing impurities such as air from entering the electrolyte and avoiding their interference with the electrocatalytic hydrogen evolution reaction or oxidation and corrosion of the electrode material, ensuring a stable experimental environment and improving the accuracy of the detection results. Electrode rod mounting parts 3 are fixedly installed on both sides of the bottom of the inner cavity of the electrolytic cell 2. A U-shaped partition 9 is fixedly installed in the middle of the inner cavity of the electrolytic cell 2. The sealing cover 4 is set on both sides of the top of the U-shaped partition 9. The U-shaped partition 9 divides the inner cavity of the electrolytic cell 2 into left and right chambers to avoid mixing hydrogen and oxygen, improve gas purity and experimental safety. An observation window 7 is fixedly installed on the outer surface of the electrolytic cell 2 away from the power source 11. The observation window 7 facilitates observation of phenomena such as bubble generation and liquid level changes during the electrolysis process. Oxygen collection mechanism 5 is installed on the outer surface of electrolytic cell 2 and is used to collect oxygen generated during electrolysis. The detection mechanism 6 is installed on the top of the base plate 1. The detection mechanism 6 is set opposite to the oxygen collection mechanism 5 on both sides of the electrolysis cell 2. The detection mechanism 6 is used to detect the amount of hydrogen produced by electrolysis.
[0022] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figure 5-7 As shown, the electrode rod mounting component 3 includes a mounting plate 31, which is fixedly installed at the bottom of the inner cavity of the electrolytic cell 2. A mounting sleeve 32 and a support spring 34 are fixedly installed on the top of the mounting plate 31. The mounting sleeve 32 is used to insert the electrode rod, and the support spring 34 is located at the axis of the mounting sleeve 32. An abutment ring 36 is fixedly installed on the inner wall of the mounting sleeve 32. A top block 33 is fixedly installed on the top of the support spring 34. The support spring 34 pushes the top block 33 upward so that the electrode rod is in close contact with the top block 33. A clamping piece 35 is fixedly installed on the bottom edge of the top block 33. The clamping pieces 35 are evenly distributed along the axis of the top block 33. The outer curved surface of the clamping piece 35 is pressed and matched with the abutment ring 36. The abutment ring 36 presses the clamping piece 35 to clamp the electric shock rod. The top block 33 and the clamping piece 35 are both made of metal material with good conductivity. The top block 33 is in direct contact with the bottom of the electrode rod. The clamping piece 35 clamps the side wall of the electrode rod to ensure a stable electrical connection between the electrode rod and the wire 10. The sealing cover 4 includes a cover plate 41, and an installation frame 42 is fixedly installed at the bottom of the cover plate 41. The installation frame 42 is inserted into the top of the electrolytic cell 2 to improve the sealing stability. A sealing strip 43 is fixedly installed on the outer side of the installation frame 42. The sealing strip 43 is evenly distributed on the outer side of the installation frame 42. The sealing strip 43 enhances the sealing performance between the cover plate 41 and the electrolytic cell 2, and prevents impurities in the air from entering the electrolyte and interfering with the electrocatalytic hydrogen evolution reaction. Handles 44 are fixedly installed on both sides of the top of the cover plate 41. The handles 44 facilitate the taking and putting away of the sealing cover 4. The oxygen collection mechanism 5 includes a fixed frame 51 and an oxygen collection pipe 52. The fixed frame 51 is fixedly installed on the side of the electrolytic cell 2. The oxygen collection pipe 52 is detachably installed on the inner side of the fixed frame 51. The oxygen collection pipe 52 is used to contain the collected oxygen. A fixed ring plug 53 is installed at the open end of the oxygen collection pipe 52. An oxygen delivery hose 54 is installed inside the fixed ring plug 53. The oxygen delivery hose 54 is connected to the oxygen outlet of the sealing cover 4 and is used to introduce oxygen into the oxygen collection pipe 52.
[0023] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figure 8-11 As shown, the detection mechanism 6 includes a hydrogen storage tank 61 and a displacement component 65. The hydrogen storage tank 61 initially stores hydrogen gas supplied from the electrolysis cell 2. A support leg 62 is fixedly installed at the bottom of the hydrogen storage tank 61. A delivery pipe 63 is fixedly installed at the axis of the bottom of the hydrogen storage tank 61. A laser displacement sensor 64 is installed through the bottom of the hydrogen storage tank 61. Guide rods 66 are fixedly installed on both sides of the inner cavity of the hydrogen storage tank 61. The displacement component 65 is slidably installed on the outer surface of the guide rods 66. The guide rods 66 guide the displacement component 65 to slide up and down to prevent tilting. The displacement component 65 moves as the hydrogen pressure rises. The laser displacement sensor 64 detects the displacement data of the displacement component 65 in real time and transmits the data to the operation panel 8. Combined with the cross-sectional area of the inner cavity of the hydrogen storage tank 61, the real-time hydrogen production amount and hydrogen production rate are calculated. A vent 68 is opened at the top of the hydrogen storage tank 61. The vent 68 is used to balance the gas pressure above the displacement component 65. There are three support legs 62, and the three support legs 62 are evenly distributed along the axis of the hydrogen storage tank 61. The support legs 62 are fixedly installed on the top of the base plate 1. The delivery pipe 63 is connected to the hydrogen outlet of the sealing cover 4. Guide rods 66 are arranged on both sides of displacement member 65. A buffer spring 67 is fixedly connected between displacement member 65 and the top of the inner cavity of hydrogen storage tank 61. The buffer spring 67 is sleeved on the outer surface of guide rod 66. Displacement member 65 is sealed and adapted to the inner wall of hydrogen storage tank 61. A push tube 69 is fixedly installed inside vent hole 68. The bottom end of push tube 69 is set as conical, and push tube 69 is squeezed and adapted to the axis of displacement member 65. When displacement member 65 moves upward under the action of hydrogen pressure, displacement member 65 contacts and is squeezed by push tube 69. The lower end of push tube 69 has a conical structure. As displacement member 65 continues to rise, the conical surface gradually squeezes displacement member 65 to form a ventilation channel, which facilitates the hydrogen generated by electrolysis to enter push tube 69 through the channel. The displacement component 65 includes a sliding plate 651, which is slidably mounted on the outer surface of the guide rod 66. The sliding plate 651 is sealed and adapted to the inner wall of the hydrogen storage tank 61. A mounting hole 652 is provided at the axis of the sliding plate 651. A flexible sealing element 653 is fixedly installed inside the mounting hole 652. The flexible sealing element 653 maintains the seal between the sliding plate 651 and the push tube 69. The flexible seal 653 includes a fixed ring 6531 and a rubber ring 6532. The fixed ring 6531 is fixedly installed on the inner wall of the mounting hole 652, and the rubber ring 6532 is disposed on the inner side of the fixed ring 6531. An annular connecting piece 6533 is fixedly connected between the fixed ring 6531 and the rubber ring 6532. The rubber ring 6532 is in a closed state in the initial state, and its aperture is extremely small, so gas cannot pass through, thereby ensuring the airtightness of the hydrogen storage tank 61. When the displacement member 65 moves upward under the action of hydrogen pressure, the rubber ring 6532 contacts and is squeezed with the push tube 69 at the top. The conical surface at the lower end of the push tube 69 gradually expands the central opening of the rubber ring 6532 to form a ventilation channel. At this time, the annular connecting piece 6533 is stretched, and the hydrogen generated by electrolysis can enter the push tube 69 through this channel and be transported to the subsequent gas storage device.
[0024] When in use, inject the electrolyte solution into the electrolytic cell 2, and the liquid level shall be above the electrode rod mounting part 3. Use the handle 44 to install the sealing cover 4 on the top of the electrolytic cell 2, ensuring that the mounting frame 42 fits tightly with the opening of the electrolytic cell 2, and the sealing strip 43 forms an effective seal to prevent air from entering. An electrode rod coated with the hydrogen evolution material to be tested is installed in the electrode rod mounting part 3 on one side of the electrolytic cell 2 as a working electrode and connected to the negative terminal of the power supply. The counter electrode is installed on the other side. Connect the oxygen delivery hose 54 of the oxygen collection mechanism 5 to the oxygen outlet of the sealing cover 4. Fix the oxygen collection pipe 52 on the fixing frame 51 to keep it stable. Connect the delivery pipe 63 of the detection mechanism 6 to the hydrogen outlet of the sealing cover 4 to ensure that the pipeline is well sealed. Power is turned on via the operation panel 8 and the required current or voltage parameters are set. The current is transmitted to the electrode rod mounting part 3 via the wire 10 and then applied between the working electrode and the counter electrode. Under the action of electrocatalysis, hydrogen ions or water molecules in the electrolyte gain electrons on the surface of the working electrode and undergo a reduction reaction to generate hydrogen gas. The electrode undergoes an oxidation reaction to generate oxygen gas. The U-shaped partition 9 divides the inside of the electrolytic cell 2 into left and right chambers to avoid mixing hydrogen gas and oxygen gas, thereby improving gas purity and experimental safety. The generated hydrogen gas enters the detection mechanism 6 through the hydrogen gas outlet of the sealed cover 4, while the oxygen gas enters the oxygen collection mechanism 5 through the oxygen gas outlet. Hydrogen enters the hydrogen storage tank 61 through the delivery pipe 63, and the gas pressure inside the tank increases, pushing the displacement component 65 to slide upward along the guide rod 66. As the displacement component 65 rises, the rubber ring 6532 of the flexible sealing component 653 contacts and is opened with the conical lower end of the push tube 69, forming a ventilation channel. Hydrogen enters the subsequent gas collection device through the push tube 69. The laser displacement sensor 64 detects the position change of the displacement component 65 in real time and calculates the hydrogen production volume and hydrogen production rate based on the displacement and the cross-sectional area of the hydrogen storage tank 61. After the experiment, power supply 11 is turned off to stop the electrolysis reaction. After hydrogen generation stops, displacement component 65 is reset under the action of buffer spring 67, and rubber ring 6532 returns to the closed state to ensure that hydrogen storage tank 61 is sealed. The sealing cover 4 is removed, the electrode rod of the hydrogen evolution material to be tested is replaced, and the electrolytic cell 2 is cleaned to prepare for the next test.
[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A detection device for electrocatalytic hydrogen evolution materials, characterized in that, include: The base plate (1) and the electrolytic cell (2) fixed on its top are provided with an operation panel (8) fixedly installed on the top of the base plate (1). A power supply (11) is fixedly installed on the outer surface of the electrolytic cell (2). The positive and negative terminals of the power supply (11) are connected to wires (10). Electrode rod mounting parts (3) are fixedly installed at the ends of the wires (10). Sealing covers (4) are detachably installed on both sides of the top of the electrolytic cell (2). Oxygen outlet and hydrogen outlet are respectively provided on the two sealing covers (4). An oxygen collection mechanism (5) is installed on the outer surface of the electrolytic cell (2); The detection mechanism (6) is installed on the top of the base plate (1) and is arranged opposite to the oxygen collection mechanism (5) on both sides of the electrolytic cell (2). The detection mechanism (6) includes a hydrogen storage tank (61) and a displacement component (65). A support leg (62) is fixedly installed at the bottom of the hydrogen storage tank (61). A delivery pipe (63) is fixedly installed at the center of the bottom of the hydrogen storage tank (61). A laser displacement sensor (64) is installed through the bottom of the hydrogen storage tank (61). Guide rods (66) are fixedly installed on both sides of the inner cavity of the hydrogen storage tank (61). The displacement component (65) is slidably installed on the outer surface of the guide rods (66). A vent hole (68) is opened at the top of the hydrogen storage tank (61).
2. The detection device for electrocatalytic hydrogen evolution materials according to claim 1, characterized in that: The electrode rod mounting component (3) is fixedly installed on both sides of the bottom of the inner cavity of the electrolytic cell (2). A U-shaped partition (9) is fixedly installed in the middle of the inner cavity of the electrolytic cell (2). The sealing cover (4) is set on both sides of the top of the U-shaped partition (9). An observation window (7) is fixedly installed on the outer surface of the electrolytic cell (2) away from the power source (11).
3. The detection device for electrocatalytic hydrogen evolution materials according to claim 1, characterized in that: The number of the support legs (62) is three, and the three support legs (62) are evenly distributed along the axis of the hydrogen storage tank (61). The support legs (62) are fixedly installed on the top of the base plate (1), and the delivery pipe (63) is connected to the hydrogen outlet of the sealing cover (4).
4. The detection device for electrocatalytic hydrogen evolution materials according to claim 1, characterized in that: The guide rod (66) is set on both sides of the displacement member (65). A buffer spring (67) is fixedly connected between the displacement member (65) and the top of the inner cavity of the hydrogen storage tank (61). The buffer spring (67) is sleeved on the outer surface of the guide rod (66). The displacement member (65) is sealed and adapted to the inner wall of the hydrogen storage tank (61). A push tube (69) is fixedly installed inside the vent hole (68). The bottom end of the push tube (69) is set as a cone, and the push tube (69) is squeezed and adapted to the axis of the displacement member (65).
5. The detection device for electrocatalytic hydrogen evolution materials according to claim 4, characterized in that: The displacement component (65) includes a sliding plate (651), which is slidably mounted on the outer surface of the guide rod (66). The sliding plate (651) is sealed and adapted to the inner wall of the hydrogen storage tank (61). An installation hole (652) is provided at the axis of the sliding plate (651), and a flexible sealing component (653) is fixedly installed inside the installation hole (652).
6. The detection device for electrocatalytic hydrogen evolution materials according to claim 5, characterized in that: The flexible seal (653) includes a fixing ring (6531) and a rubber ring (6532). The fixing ring (6531) is fixedly installed on the inner wall of the mounting hole (652). The rubber ring (6532) is disposed on the inner side of the fixing ring (6531). An annular connecting piece (6533) is fixedly connected between the fixing ring (6531) and the rubber ring (6532).
7. The detection device for electrocatalytic hydrogen evolution materials according to claim 1, characterized in that: The electrode rod mounting component (3) includes a mounting plate (31), which is fixedly installed at the bottom of the inner cavity of the electrolytic cell (2). A mounting sleeve (32) and a support spring (34) are fixedly installed on the top of the mounting plate (31), and the support spring (34) is located at the axis of the mounting sleeve (32).
8. The detection device for electrocatalytic hydrogen evolution materials according to claim 7, characterized in that: An abutment ring (36) is fixedly installed on the inner wall of the mounting sleeve (32), a top block (33) is fixedly installed on the top of the support spring (34), and a clip (35) is fixedly installed on the bottom edge of the top block (33). The clips (35) are evenly distributed along the axis of the top block (33), and the outer curved surface of the clips (35) is pressed and adapted to the abutment ring (36).
9. The detection device for electrocatalytic hydrogen evolution materials according to claim 1, characterized in that: The sealing cover (4) includes a cover plate (41), a mounting frame (42) is fixedly installed at the bottom of the cover plate (41), a sealing strip (43) is fixedly installed on the outer side of the mounting frame (42), the sealing strip (43) is evenly distributed on the outer side of the mounting frame (42), and handles (44) are fixedly installed on both sides of the top of the cover plate (41).
10. The detection device for electrocatalytic hydrogen evolution materials according to claim 1, characterized in that: The oxygen collection mechanism (5) includes a fixed frame (51) and an oxygen collection pipe (52). The fixed frame (51) is fixedly installed on the side of the electrolytic cell (2). The oxygen collection pipe (52) is detachably installed on the inner side of the fixed frame (51). A fixed ring plug (53) is installed at the open end of the oxygen collection pipe (52). An oxygen delivery hose (54) is installed inside the fixed ring plug (53). The oxygen delivery hose (54) is connected to the oxygen outlet of the sealing cap (4).