Membrane electrode device and membrane electrode equipment

Abstract

The invention provides a membrane electrode device and membrane electrode equipment. The membrane electrode device comprises an electrolytic bath, and an anode assembly, a cathode assembly and a membrane electrode assembly which are positioned in the electrolytic bath. The anode assembly and the cathode assembly are respectively positioned on two opposite sides of the membrane electrode assembly; the membrane electrode assembly comprises a first catalyst layer facing the anode assembly, a second catalyst layer facing the cathode assembly and an ion exchange membrane located between the first catalyst layer and the second catalyst layer. The first light source of the anode assembly is opposite to the first catalyst layer, the first catalyst layer is opposite to the second catalyst layer, and the second light source of the cathode assembly is opposite to the second catalyst layer. A part of light emitted by the first light source enters the first catalyst layer, and a part of light enters the second catalyst layer through the first catalyst layer and the ion exchange membrane; part of light emitted by the second light source enters the second catalyst layer, and part of the light enters the first catalyst layer through the second catalyst layer and the ion exchange membrane.

Description

Technical Field

[0001] The present application relates to the field of membrane electrode technology, and in particular to a membrane electrode device and a membrane electrode equipment. Background Art

[0002] As a clean and efficient secondary energy source, hydrogen energy has received more and more attention. The hydrogen production device mainly obtains hydrogen by electrolyzing water through an ion exchange membrane. The electrolyzer of the hydrogen production device includes an anode assembly, a cathode assembly and a membrane electrode assembly. The membrane electrode assembly includes an ion exchange membrane and a catalyst layer located on both sides of the ion exchange membrane. The catalyst layer plays a vital role in increasing the reaction rate and reducing the cost of hydrogen production. By observing the particles on the surface of the catalyst layer and the cracks in the catalyst layer, it has important guiding significance for improving the working performance of the electrolyzer. The existing hydrogen production device is not convenient for observing the catalyst layer. Summary of the invention

[0003] The embodiments of the present application provide a membrane electrode device and a membrane electrode equipment.

[0004] According to a first aspect of an embodiment of the present application, a membrane electrode device is provided, comprising:

[0005] Electrolyzer;

[0006] An anode assembly, a cathode assembly and a membrane electrode assembly are located in the electrolytic cell; the anode assembly and the cathode assembly are respectively located on opposite sides of the membrane electrode assembly; the membrane electrode assembly includes a first catalytic layer facing the anode assembly, a second catalytic layer facing the cathode assembly and an ion exchange membrane located between the first catalytic layer and the second catalytic layer; the anode assembly includes a first light source, the cathode assembly includes a second light source, the first light source is arranged opposite to the first catalytic layer, the first catalytic layer is arranged opposite to the second catalytic layer, and the second light source is arranged opposite to the second catalytic layer; part of the light emitted by the first light source is incident on the first catalytic layer, and part of the light passes through the first catalytic layer and the ion exchange membrane to be incident on the second catalytic layer; part of the light emitted by the second light source is incident on the second catalytic layer, and part of the light passes through the second catalytic layer and the ion exchange membrane to be incident on the first catalytic layer.

[0007] In one embodiment, the anode assembly further comprises an anode plate and a first end plate located on a side of the anode plate away from the membrane electrode assembly, wherein the first end plate is provided with a first through hole; the cathode assembly further comprises a cathode plate and a second end plate located on a side of the cathode plate away from the membrane electrode assembly, wherein the second end plate is provided with a second through hole;

[0008] A first groove is provided on the surface of the first end plate facing the anode plate, and the first light source is accommodated in the first groove; and / or a second groove is provided on the surface of the second end plate facing the cathode plate, and the second light source is accommodated in the second groove.

[0009] In one embodiment, the anode assembly further comprises an anode plate and a first end plate located on a side of the anode plate away from the membrane electrode assembly, the first end plate being provided with a first through hole; the cathode assembly further comprises a cathode plate and a second end plate located on a side of the cathode plate away from the membrane electrode assembly, the second end plate being provided with a second through hole; the first light source surrounds the first through hole; and / or the second light source surrounds the second through hole.

[0010] In one embodiment, the anode assembly further includes an anode plate, and the first light source is located on a side of the anode plate away from the membrane electrode assembly; the cathode assembly further includes a cathode plate, and the second light source is located on a side of the cathode plate away from the membrane electrode assembly;

[0011] The anode assembly further includes a first light-concentrating structure, which is located between the anode plate and the first light source; and / or the cathode assembly further includes a second light-concentrating structure, which is located between the cathode plate and the second light source.

[0012] In one embodiment, when the anode assembly includes a first light-focusing structure, the first light-focusing structure is a first light-transmitting plate, and the refractive index of the first light-transmitting plate is greater than the refractive index of air and less than the refractive index of water; and / or, when the cathode assembly includes a second light-focusing structure, the second light-focusing structure is a second light-transmitting plate, and the refractive index of the second light-transmitting plate is greater than the refractive index of air and less than the refractive index of water.

[0013] In one embodiment, when the anode assembly includes a first light-focusing structure, the membrane electrode device includes a plurality of first light-transmitting plates of different thicknesses, the anode assembly includes one first light-transmitting plate, and each of the first light-transmitting plates can be detachably connected to the anode plate; and / or, when the cathode assembly includes a second light-focusing structure, the membrane electrode device includes a plurality of second light-transmitting plates of different thicknesses, the cathode assembly includes one second light-transmitting plate, and each of the second light-transmitting plates can be detachably connected to the cathode plate.

[0014] In one embodiment, the anode assembly further comprises an anode plate and a first end plate located on a side of the anode plate away from the membrane electrode assembly, wherein the first end plate is provided with a first through hole; the cathode assembly further comprises a cathode plate and a second end plate located on a side of the cathode plate away from the membrane electrode assembly, wherein the second end plate is provided with a second through hole;

[0015] The anode assembly further includes a first flexible insulating pad located between the first end plate and the anode electrode plate; and / or the cathode assembly further includes a second flexible insulating pad located between the second end plate and the cathode electrode plate.

[0016] In one embodiment, the first flexible insulating pad is provided with a third through hole, and the orthographic projection of the first through hole on the first flexible insulating pad falls within the third through hole; and / or, the second flexible insulating pad is provided with a fourth through hole, and the orthographic projection of the second through hole on the second flexible insulating pad falls within the fourth through hole.

[0017] In one embodiment, the anode plate is provided with an anode flow channel, and the orthographic projection of the anode flow channel on the first flexible insulating pad falls within the third through hole; and / or, the cathode plate is provided with a cathode flow channel, and the orthographic projection of the cathode flow channel on the second flexible insulating pad falls within the fourth through hole.

[0018] According to a second aspect of an embodiment of the present application, a membrane electrode device is provided, comprising the above-mentioned membrane electrode assembly.

[0019] The membrane electrode device and membrane electrode equipment provided in the embodiments of the present application are configured such that the anode component includes a first light source, the cathode component includes a second light source, and the first light source is arranged opposite to the first catalytic layer, the first catalytic layer is arranged opposite to the second catalytic layer, and the second light source is arranged opposite to the second catalytic layer, so that the light emitted by the first light source and the light emitted by the second light source can both be incident on the first catalytic layer; the light emitted by the first light source is incident on the surface of the first catalytic layer away from the second catalytic layer, so that the operator can observe the particle distribution on the surface of the first catalytic layer on the side of the anode component away from the cathode component; when cracks exist in the first catalytic layer, the light from the second light source incident on the first catalytic layer can pass through the cracks of the first catalytic layer, and the operator can observe the cracks of the first catalytic layer on the side of the anode component away from the cathode component, so the configuration of the first light source and the second light source enables the operator to simultaneously observe or photograph the particle distribution and cracks on the surface of the first catalytic layer; similarly, the configuration of the first light source and the second light source enables the operator to simultaneously observe or photograph the particle distribution and cracks on the surface of the second catalytic layer, which helps to improve the working performance of the electrolyzer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the connection of an anode assembly, a membrane electrode assembly and a cathode assembly in a membrane electrode device provided by an exemplary embodiment of the present application;

[0021] Figure 2 It is a perspective exploded view of a part of the structure of a membrane electrode device provided by an exemplary embodiment of the present application;

[0022] Figure 3 yes Figure 2 A perspective exploded view of a portion of the structure of the membrane electrode assembly shown;

[0023] Figure 4 is a schematic structural diagram of a first end plate of a membrane electrode device provided by an exemplary embodiment of the present application;

[0024] Figure 5 It is a schematic diagram of the propagation path of light emitted by the first light source in a membrane electrode device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0026] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components in a certain specific posture; if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.

[0027] The present application provides a membrane electrode device. The membrane electrode device includes an electrolytic cell. Figure 1 As shown, the membrane electrode assembly also includes an anode assembly 10, a cathode assembly 20 and a membrane electrode assembly 30 located in the electrolytic cell. The electrolytic cell is used to fix the anode assembly 10, the cathode assembly 20 and the membrane electrode assembly 30. The anode assembly 10 and the cathode assembly 20 are respectively located on opposite sides of the membrane electrode assembly 30. The membrane electrode assembly 30 includes a first catalytic layer 31 facing the anode assembly 10, a second catalytic layer 32 facing the cathode assembly 20, and an ion exchange membrane 33 located between the first catalytic layer 31 and the second catalytic layer 32.

[0028] like Figure 2 and Figure 3As shown, the anode assembly 10 includes a first light source 11, and the cathode assembly 20 includes a second light source 21. The first light source 11 is arranged opposite to the first catalyst layer 31, the first catalyst layer 31 is arranged opposite to the second catalyst layer 32, and the second light source 21 is arranged opposite to the second catalyst layer 32. Part of the light emitted by the first light source 11 is incident on the first catalyst layer 31, and part of the light passes through the first catalyst layer 31 and the ion exchange membrane 33 and is incident on the second catalyst layer 32; part of the light emitted by the second light source 21 is incident on the second catalyst layer 32, and part of the light passes through the second catalyst layer 32 and the ion exchange membrane 33 and is incident on the first catalyst layer 31.

[0029] The membrane electrode device provided in the embodiment of the present application is provided with an anode assembly 10 including a first light source 11, a cathode assembly 20 including a second light source 21, and the first light source 11 is arranged opposite to the first catalytic layer 31, the first catalytic layer 31 is arranged opposite to the second catalytic layer 32, and the second light source 21 is arranged opposite to the second catalytic layer 32. Then, the light emitted by the first light source 11 and the light emitted by the second light source 21 can both be incident on the first catalytic layer 31; the light emitted by the first light source 11 is incident on the surface of the first catalytic layer 31 away from the second catalytic layer 32, so that the operator can observe the first catalytic layer 31 on the side of the anode assembly 10 away from the cathode assembly 20. 1; when there are cracks in the first catalytic layer 31, the light from the second light source 21 incident on the first catalytic layer 31 can pass through the cracks in the first catalytic layer 31, and the operator can observe the cracks in the first catalytic layer 31 on the side of the anode assembly 10 away from the cathode assembly 20. Therefore, the arrangement of the first light source 11 and the second light source 21 allows the operator to simultaneously observe or photograph the particle distribution and cracks on the surface of the first catalytic layer 31; similarly, the arrangement of the first light source 11 and the second light source 21 allows the operator to simultaneously observe or photograph the particle distribution and cracks on the surface of the second catalytic layer 32, which helps to improve the working performance of the electrolyzer.

[0030] In one embodiment, the brightness of the first light source 11 and the second light source 21 is adjustable, and the operator can adjust the brightness of the first light source 11 and the second light source 21 to achieve the best observation effect. For example, when the first catalytic layer 31 needs to be observed, the brightness of the first light source 11 can be adjusted to be lower than the brightness of the second light source 21; when the second catalytic layer 32 needs to be observed, the brightness of the first light source 11 can be adjusted to be higher than the brightness of the second light source 21.

[0031] In one embodiment, the ion exchange membrane 33 may be a proton exchange membrane or an anion exchange membrane.

[0032] In one embodiment, Figures 1 to 3As shown, the anode assembly 10 further includes an anode plate 12 and a first end plate 13 located on the side of the anode plate 12 away from the membrane electrode assembly 30, and the anode plate 12 is provided with an anode flow channel 121. The cathode assembly 20 further includes a cathode plate 22 and a second end plate 23 located on the side of the cathode plate 22 away from the membrane electrode assembly 30, and the cathode plate 22 is provided with a cathode flow channel 221. The anode assembly 10, the membrane electrode assembly 30 and the cathode assembly 20 are connected. Specifically, each structure of the anode assembly 10 is provided with a mounting hole, each structure of the membrane electrode assembly 30 is provided with a mounting hole, and each structure of the cathode assembly 20 is provided with a mounting hole, and the connectors pass through the mounting holes of the anode assembly 10, the mounting holes of the membrane electrode assembly 30 and the mounting holes of the cathode assembly 20 in sequence, respectively, to connect the anode assembly 10, the cathode assembly 20 and the membrane electrode assembly 30 together.

[0033] In one embodiment, the anode channel 121 is in a long strip shape, or the anode channel 121 is in a non-linear shape, for example, in a curved shape.

[0034] In one embodiment, the cathode flow channel 221 is in a strip shape, or the cathode flow channel 221 is in a non-linear shape, for example, in a curved shape.

[0035] In one embodiment, the membrane electrode device is a water electrolysis device. In other embodiments, the membrane electrode device is a fuel cell device. When the membrane electrode device is a water electrolysis device, the first light source 11 is incident on the anode plate 12, so that the bubbles at the anode plate 12 can be clearly observed; the second light source 21 is incident on the cathode plate 22, so that the bubbles at the cathode plate 22 can be clearly observed or photographed.

[0036] In one embodiment, Figures 2 to 4 As shown, the first end plate 13 is provided with a first through hole 131; the second end plate 23 is provided with a second through hole 231. In this way, the first catalyst layer 31 can be observed or photographed through the first through hole 131 of the first end plate 13, and the second catalyst layer 32 can be observed or photographed through the second through hole 231 of the second end plate 23.

[0037] In one embodiment, Figure 2 and Figure 4As shown, the surface of the first end plate 13 facing the anode plate 12 is provided with a first groove 132, and the first light source 11 is accommodated in the first groove 132. In this way, the arrangement of the first light source 11 does not increase the thickness of the anode assembly 10; and the light emitted by the first light source 11 does not pass through the first end plate 13, which can reduce the loss of light; compared with the solution of arranging the first light source 11 between the first end plate 13 and the anode plate 12, it can avoid squeezing the first light source 11 and damaging the first light source 11 during the assembly of the anode assembly 10. In some embodiments, the material of the first end plate 13 can be stainless steel. In this way, the strength of the first end plate 13 is relatively large, which is not conducive to deformation, and the overall strength of the anode assembly 10 can be improved.

[0038] In one embodiment, Figure 3 As shown, the surface of the second end plate 23 facing the cathode plate 22 is provided with a second groove 232, and the second light source 21 is accommodated in the second groove 232. In this way, the second light source 21 does not increase the thickness of the cathode assembly 20; and the light emitted by the second light source 21 does not pass through the second end plate 23, which can reduce the loss of light; compared with the solution of arranging the second light source 21 between the second end plate 23 and the cathode plate 22, it can avoid squeezing the second light source 21 and damaging the second light source 21 during the assembly of the cathode assembly 20. In some embodiments, the material of the second end plate 23 can be stainless steel. In this way, the second end plate 23 has a greater strength, is not conducive to deformation, and can improve the overall strength of the cathode assembly 20.

[0039] In the membrane electrode device provided in the embodiment of the present application, since the anode assembly 10 and the cathode assembly 20 are respectively provided with light sources, and the first end plate 13 is provided with a first through hole 131, and the second end plate 23 is provided with a second through hole 231, observation or photography can be performed from the side of the anode assembly 10 away from the membrane electrode assembly 30 and from the side of the cathode assembly 20 away from the membrane electrode assembly 30. During installation, there is no need to distinguish the positions of the anode assembly 10 and the cathode assembly 20, which can simplify the difficulty of installation.

[0040] In one embodiment, Figure 2 and Figure 4 As shown, the first light source 11 surrounds the first through hole 131 of the first end plate 13, and the first groove 132 is annular. In this way, the light beam emitted by the first light source 11 is annular, and the first light source 11 can better supplement the first catalyst layer 31 and the second catalyst layer 32 to improve the observation effect and the shooting effect.

[0041] In one embodiment, Figure 3As shown, the second light source 21 surrounds the second through hole 231 of the second end plate 23. The second groove 232 is annular. In this way, the light beam emitted by the second light source 21 is annular, and the second light source 21 can better supplement the first catalytic layer 31 and the second catalytic layer 32 to improve the observation effect and the shooting effect.

[0042] In one embodiment, Figure 2 and Figure 4 As shown, the first light source 11 includes a plurality of first light emitting elements 111 connected in series, and the first light emitting elements 111 may be LEDs. The first end plate 13 is provided with a first strip groove 133 communicating with the first groove 132, and the anode assembly 10 further includes a first wire 16 connected to the first light source 11, and a portion of the first wire 16 is located in the first strip groove 133.

[0043] In one embodiment, Figure 3 As shown, the second light source 21 includes a plurality of second light emitting elements 211 connected in series, and the second light emitting elements 211 may be LEDs. The second end plate 23 is provided with a second strip groove 233 communicating with the second groove 232, and the cathode assembly 20 further includes a second wire 26 connected to the second light source 21, and a portion of the second wire 26 is located in the second strip groove 233.

[0044] In one embodiment, Figure 2 and Figure 3 As shown, the anode assembly 10 further includes a first light-concentrating structure 14, which is located between the anode plate 12 and the first light source 11. The first light-concentrating structure 14 can converge the light emitted by the first light source 11, increase the brightness of the surface of the first catalytic layer 31, or increase the brightness of the light incident on the second catalytic layer 32, which helps to improve the observation effect and the shooting effect.

[0045] In one embodiment, Figure 2 and Figure 3 As shown, the cathode assembly 20 further includes a second light-concentrating structure 24, which is located between the cathode plate 22 and the second light source 21. The second light-concentrating structure 24 can converge the light emitted by the second light source 21, increase the brightness of the surface of the second catalytic layer 32, or increase the brightness of the light incident on the first catalytic layer 31, which helps to improve the observation effect and the shooting effect.

[0046] In one embodiment, Figure 2 and Figure 3As shown, when the anode assembly 10 includes the first light-concentrating structure 14, the first light-concentrating structure 14 is a first light-transmitting plate 141, and the refractive index of the first light-transmitting plate 141 is greater than the refractive index of air and less than the refractive index of water. For the water electrolysis device, the medium in the first through hole 131 of the first end plate 13 and the medium between the first light source 11 and the first light-transmitting plate 141 are air, and the medium in the anode flow channel 121 of the anode plate 12 is water. By setting the refractive index of the first light-transmitting plate 141 to be greater than the refractive index of air and less than the refractive index of water, the light emitted by the first light source 11 is refracted when passing through the interface between the air and the first light-transmitting plate 141, and the light emission angle increases and deflects inward. When passing through the interface between the first light-transmitting plate 141 and water, the light emission angle increases again and deflects inward, thereby playing the role of converging light. The first light-transmitting plate refers to a plate with a high light transmittance, for example, a light transmittance greater than or equal to 70%.

[0047] In one embodiment, Figure 2 and Figure 3 As shown, when the cathode assembly 20 includes a second light-concentrating structure 24, the second light-concentrating structure 24 is a second light-transmitting plate 241, and the refractive index of the second light-transmitting plate 241 is greater than the refractive index of air and less than the refractive index of water. For the water electrolysis device, the medium in the second through hole 231 of the second end plate 23 is air, and the medium in the cathode flow channel 221 of the cathode plate 22 is water. By setting the refractive index of the second light-transmitting plate 241 to be greater than the refractive index of air and less than the refractive index of water, the light emitted by the second light source 21 is refracted when passing through the interface between the air and the second light-transmitting plate 241, and the light emission angle increases and deflects inward. When passing through the interface between the second light-transmitting plate 241 and water, the light emission angle increases again and deflects inward, thereby playing the role of converging light. The second light-transmitting plate refers to a plate with a high light transmittance, for example, a light transmittance greater than or equal to 70%.

[0048] like Figure 5 As shown, when the light emitted by the first light source 11 passes through the air and enters the first light-transmitting plate 141, the incident angle θ1 is smaller than the exit angle θ2, so that the light converges once; when the light passes through the first light-transmitting plate 141 and enters the water, the incident angle θ2 is smaller than the exit angle θ3, and the light converges again. It can be seen that the first light-transmitting plate 141 allows the light emitted by the first light source 11 to converge during the process of propagating to the first catalytic layer 31. Similarly, the second light-transmitting plate 241 can allow the light emitted by the second light source 21 to converge during the process of propagating to the second catalytic layer 32.

[0049] In one embodiment, the membrane electrode device includes a plurality of first light-transmitting plates 141 with different thicknesses, and the anode assembly 10 includes one first light-transmitting plate 141, and each of the first light-transmitting plates 141 can be detachably connected to the anode plate 12. In this way, first light-transmitting plates 141 with different thicknesses can be selected to be connected to the anode plate 12 as needed to achieve a better observation effect. For example, when it is necessary to observe the first catalytic layer 31, a first light-transmitting plate 141 with a larger thickness can be selected to avoid the light emitted by the first light source 11 from converging on the surface of the first catalytic layer 31 away from the membrane electrode assembly 30, and the light-collecting area is too large and the brightness is too low; when it is necessary to observe the second catalytic layer 32, a first light-transmitting plate 141 with a smaller thickness can be selected to avoid the light emitted by the first light source 11 from converging on the second catalytic layer 32, and the light-collecting area is too small, which is not conducive to observation.

[0050] In one embodiment, the material of the first light-transmitting plate 141 may be acrylic. Of course, the first light-transmitting plate 141 may also be made of other materials with high light transmittance and refractive index that meets the requirements.

[0051] In one embodiment, the material of the first light-transmitting plate 141 is an insulating material, so that the first light-transmitting plate 141 can insulate the first end plate 13 from the anode plate 12 .

[0052] In one embodiment, the membrane electrode device includes a plurality of second light-transmitting plates 241 with different thicknesses, and the cathode assembly 20 includes a second light-transmitting plate 241, and each second light-transmitting plate 241 can be detachably connected to the cathode plate 22. In this way, second light-transmitting plates 241 with different thicknesses can be selected to be connected to the cathode plate 22 as needed to achieve a better observation effect. For example, when it is necessary to observe the second catalytic layer 32, a second light-transmitting plate 241 with a larger thickness can be selected to avoid the light emitted by the second light source 21 from being incident on the surface of the second catalytic layer 32 away from the membrane electrode assembly 30. When it is necessary to observe the first catalytic layer 31, a second light-transmitting plate 241 with a smaller thickness can be selected to avoid the light emitted by the second light source 21 from being incident on the first catalytic layer 31. The light-concentrating area is too small, which is not conducive to observation.

[0053] In some embodiments, the material of the second light-transmitting plate 241 may be acrylic. Of course, the second light-transmitting plate 241 may also be made of other materials with high light transmittance and refractive index that meets the requirements.

[0054] In one embodiment, the second light-transmitting plate 241 is made of insulating material, so that the second light-transmitting plate 241 can insulate the second end plate 23 from the cathode plate 22 .

[0055] In one embodiment, Figures 1 to 3As shown, the anode assembly 10 further includes a first flexible insulating pad 15 located between the first end plate 13 and the anode plate 12. The first flexible insulating pad 15 is provided with a third through hole 151, through which the light emitted by the first light source 11 and the light emitted by the second light source 21 can pass. In this way, the thickness of the first flexible insulating pad 15 can be changed by adjusting the degree of compression of the first flexible insulating pad 15, thereby changing the distance between the first light source 11 and the first catalytic layer 31 and the second catalytic layer 32, thereby adjusting the light collecting area of ​​the light emitted by the first light source 11 in the first catalytic layer 31 and the light collecting area of ​​the second catalytic layer 32. In some embodiments, the material of the first flexible insulating pad 15 can be silicone.

[0056] In one embodiment, Figures 1 to 3 As shown, the cathode assembly 20 further includes a second flexible insulating pad 25 located between the second end plate 23 and the cathode plate 22. The second flexible insulating pad 25 is provided with a fourth through hole 251, through which the light emitted by the first light source 11 and the light emitted by the second light source 21 can pass. In this way, the thickness of the second flexible insulating pad 25 can be changed by adjusting the degree of compression of the second flexible insulating pad 25, thereby changing the distance between the second light source 21 and the first catalytic layer 31 and the second catalytic layer 32, thereby adjusting the light collecting area of ​​the light emitted by the second light source 21 in the first catalytic layer 31 and the light collecting area in the second catalytic layer 32. In some embodiments, the material of the second flexible insulating pad 25 can be silica gel.

[0057] In one embodiment, the orthographic projection of the first through hole 131 of the first end plate 13 on the first flexible insulating pad 15 covers at least part of the third through hole 151. In this way, the first catalyst layer 31 can be smoothly observed or photographed. In some embodiments, the orthographic projection of the first through hole 131 of the first end plate 13 on the first flexible insulating pad 15 completely covers the third through hole 151. In this way, the observer can observe or photograph the first catalyst layer 31 from multiple angles.

[0058] In one embodiment, the orthographic projection of the second through hole 231 of the second end plate 23 on the second flexible insulating pad 25 covers at least part of the fourth through hole 251. This arrangement ensures smooth observation or photographing of the second catalytic layer 32. In some embodiments, the orthographic projection of the second through hole 231 of the second end plate 23 on the second flexible insulating pad 25 completely covers the fourth through hole 251. This arrangement allows an observer to observe or photograph the second catalytic layer 32 from multiple angles.

[0059] In one embodiment, the orthographic projection of the anode channel 121 of the anode plate 12 on the first flexible insulating pad 15 falls within the third through hole 151. This arrangement is more conducive to observing the first catalyst layer 31, and is also more conducive to observing or photographing bubbles at the anode channel 121 of the anode plate 12.

[0060] In one embodiment, the positive projection of the cathode flow channel 221 of the cathode plate 22 on the second flexible insulating pad 25 falls within the fourth through hole 251. This arrangement is more conducive to observing the second catalytic layer 32 and more conducive to observing or photographing the bubbles at the cathode flow channel 221 of the anode plate 12.

[0061] In one embodiment, Figures 1 to 3 As shown, the membrane electrode device further includes a first insulating pad 41 located between the anode plate 12 and the membrane electrode assembly 30, the first insulating pad 41 is provided with a fifth through hole 411, and the orthographic projection of the anode flow channel 121 of the anode plate 12 on the first insulating pad 41 falls within the fifth through hole 411. Such a configuration is more conducive to observing or photographing the first catalyst layer 31.

[0062] In one embodiment, the material of the first insulating pad 41 is an elastic material. In this way, the thickness of the first insulating pad 41 can be changed by adjusting the degree of compression of the first insulating pad 41, thereby changing the distance between the first light source 11 and the first catalytic layer 31 and the second catalytic layer 32, thereby adjusting the light focusing area of ​​the light emitted by the first light source 11 in the first catalytic layer 31 and the light focusing area of ​​the second catalytic layer 32. In some embodiments, the material of the first insulating pad 41 can be silica gel.

[0063] In one embodiment, Figures 1 to 3 As shown, the membrane electrode device further includes a second insulating pad 42 located between the cathode plate 22 and the membrane electrode assembly 30, the second insulating pad 42 is provided with a sixth through hole 421, and the positive projection of the cathode flow channel 221 of the cathode plate 22 on the second insulating pad 42 falls within the sixth through hole 421. Such a configuration is more conducive to observing or photographing the second catalyst layer 32.

[0064] In one embodiment, the material of the second insulating pad 42 is an elastic material. In this way, the thickness of the second insulating pad 42 can be changed by adjusting the degree of compression of the second insulating pad 42, thereby changing the distance between the first light source 11 and the first catalytic layer 31 and the second catalytic layer 32, thereby adjusting the light-collecting area of ​​the light emitted by the first light source 11 in the first catalytic layer 31 and the light-collecting area of ​​the second catalytic layer 32. In some embodiments, the material of the second insulating pad 42 can be silicone.

[0065] The present application also provides a membrane electrode device. The membrane electrode device includes the membrane electrode device described in any of the above embodiments. When the membrane electrode device is a water electrolysis device, the membrane electrode device also includes a power supply, the positive electrode of the power supply is connected to the anode plate, and the negative electrode of the power supply is connected to the cathode plate. When the membrane electrode device is a fuel cell device, the membrane electrode device also includes a battery.

[0066] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A membrane electrode device, characterized in that: include: Electrolyzer; An anode assembly, a cathode assembly and a membrane electrode assembly are located in the electrolytic cell; the anode assembly and the cathode assembly are respectively located on opposite sides of the membrane electrode assembly; the membrane electrode assembly includes a first catalytic layer facing the anode assembly, a second catalytic layer facing the cathode assembly and an ion exchange membrane located between the first catalytic layer and the second catalytic layer; the anode assembly includes a first light source, the cathode assembly includes a second light source, the first light source is arranged opposite to the first catalytic layer, the first catalytic layer is arranged opposite to the second catalytic layer, and the second light source is arranged opposite to the second catalytic layer; part of the light emitted by the first light source is incident on the first catalytic layer, and part of the light passes through the first catalytic layer and the ion exchange membrane to be incident on the second catalytic layer; part of the light emitted by the second light source is incident on the second catalytic layer, and part of the light passes through the second catalytic layer and the ion exchange membrane to be incident on the first catalytic layer.

2. The membrane electrode device according to claim 1, characterized in that: The anode assembly further comprises an anode plate and a first end plate located on a side of the anode plate away from the membrane electrode assembly, wherein the first end plate is provided with a first through hole; the cathode assembly further comprises a cathode plate and a second end plate located on a side of the cathode plate away from the membrane electrode assembly, wherein the second end plate is provided with a second through hole; A first groove is provided on the surface of the first end plate facing the anode plate, and the first light source is accommodated in the first groove; and / or a second groove is provided on the surface of the second end plate facing the cathode plate, and the second light source is accommodated in the second groove.

3. The membrane electrode device according to claim 1, characterized in that: The anode assembly also includes an anode plate and a first end plate located on the side of the anode plate away from the membrane electrode assembly, and the first end plate is provided with a first through hole; the cathode assembly also includes a cathode plate and a second end plate located on the side of the cathode plate away from the membrane electrode assembly, and the second end plate is provided with a second through hole; the first light source surrounds the first through hole; and / or the second light source surrounds the second through hole.

4. The membrane electrode device according to claim 1, characterized in that: The anode assembly further includes an anode plate, and the first light source is located on a side of the anode plate away from the membrane electrode assembly; the cathode assembly further includes a cathode plate, and the second light source is located on a side of the cathode plate away from the membrane electrode assembly; The anode assembly further includes a first light-concentrating structure, which is located between the anode plate and the first light source; and / or the cathode assembly further includes a second light-concentrating structure, which is located between the cathode plate and the second light source.

5. The membrane electrode device according to claim 4, characterized in that: When the anode assembly includes a first light-focusing structure, the first light-focusing structure is a first light-transmitting plate, and the refractive index of the first light-transmitting plate is greater than the refractive index of air and less than the refractive index of water; and / or when the cathode assembly includes a second light-focusing structure, the second light-focusing structure is a second light-transmitting plate, and the refractive index of the second light-transmitting plate is greater than the refractive index of air and less than the refractive index of water.

6. The membrane electrode assembly according to claim 5, characterized in that: When the anode assembly includes a first light-focusing structure, the membrane electrode device includes a plurality of first light-transmitting plates of different thicknesses, the anode assembly includes one first light-transmitting plate, and each of the first light-transmitting plates can be detachably connected to the anode plate; and / or, when the cathode assembly includes a second light-focusing structure, the membrane electrode device includes a plurality of second light-transmitting plates of different thicknesses, the cathode assembly includes one second light-transmitting plate, and each of the second light-transmitting plates can be detachably connected to the cathode plate.

7. The membrane electrode assembly according to claim 1, characterized in that: The anode assembly further comprises an anode plate and a first end plate located on a side of the anode plate away from the membrane electrode assembly, wherein the first end plate is provided with a first through hole; the cathode assembly further comprises a cathode plate and a second end plate located on a side of the cathode plate away from the membrane electrode assembly, wherein the second end plate is provided with a second through hole; The anode assembly further includes a first flexible insulating pad located between the first end plate and the anode electrode plate; and / or the cathode assembly further includes a second flexible insulating pad located between the second end plate and the cathode electrode plate.

8. The membrane electrode assembly according to claim 7, characterized in that: The first flexible insulating pad is provided with a third through hole, and the orthographic projection of the first through hole on the first flexible insulating pad falls within the third through hole; and / or, the second flexible insulating pad is provided with a fourth through hole, and the orthographic projection of the second through hole on the second flexible insulating pad falls within the fourth through hole.

9. The membrane electrode assembly according to claim 8, characterized in that: The anode plate is provided with an anode flow channel, and the orthographic projection of the anode flow channel on the first flexible insulating pad falls within the third through hole; and / or, the cathode plate is provided with a cathode flow channel, and the orthographic projection of the cathode flow channel on the second flexible insulating pad falls within the fourth through hole.

10. A membrane electrode device, characterized in that: A membrane electrode device comprising any one of claims 1 to 9.

Images