Dehumidification structure based on proton exchange membrane and equipment with dehumidification structure

Abstract

The utility model provides a dehumidification structure based on a proton exchange membrane and equipment with the dehumidification structure. Wherein an anode catalytic coating is arranged on the first side of the proton exchange membrane, and a cathode catalytic coating is arranged on the second side of the proton exchange membrane; the first gas diffusion layer is arranged on one side, deviating from the proton exchange membrane, of the anode catalytic coating, and the second gas diffusion layer is arranged on one side, deviating from the proton exchange membrane, of the cathode catalytic coating; the first fixing frame is arranged on the side, away from the proton exchange membrane, of the first gas diffusion layer, the second fixing frame is arranged on the side, away from the proton exchange membrane, of the second gas diffusion layer, and the first fixing frame and the second fixing frame are oppositely arranged and press the first gas diffusion layer and the second gas diffusion layer towards the proton exchange membrane. And a sealing structure is formed by fastening through a locking piece. According to the dehumidification structure based on the proton exchange membrane and the equipment with the dehumidification structure, the problems that in the prior art, the humidity is difficult to accurately control, and the dehumidification efficiency is low can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dehumidification technical field, specifically, relate to a kind of dehumidification structure based on proton exchange membrane and the equipment with it. BACKGROUND

[0002] In the field of cultural relics protection, accurate control of quiet humidity is the core proposition to prolong the life of fragile cultural relics. The International Cultural Heritage Conservation Scientific Alliance (ICCROM) study points out that the best preservation humidity of organic material cultural relics (such as paper books, silk paintings, lacquerware, etc.) needs to be controlled in the range of 30%-60% (calculated in relative humidity), and exceeding the threshold value will trigger multiple degradation reactions: the hydrolysis rate of paper cellulose increases to 8 to 12 times that of dry state at a relative humidity of 60%; silk protein will accelerate brittle fracture when the humidity fluctuation is greater than 15%RH / 24h; the surface of lacquer body is more likely to crack due to hygroscopic expansion (expansion coefficient is 3.5×10 -4

[0003] In the prior art, humidity control technology mainly includes condensing dehumidifier and desiccant dehumidification. Among them, the dehumidifier has the problems of large vibration noise, large space occupation and difficulty in adapting to diversified micro-environments (such as showcases and transport boxes). UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a dehumidification structure based on proton exchange membrane and equipment with it, to solve the problem of inaccurate humidity control and low dehumidification efficiency in the prior art.

[0005] In order to achieve the above purpose, according to one aspect of the utility model, a dehumidification structure based on proton exchange membrane is provided, comprising:

[0006] Proton exchange membrane, the proton exchange membrane includes a first side and a second side arranged opposite to the first side, the first side is provided with an anode catalytic coating, and the second side is provided with a cathode catalytic coating;

[0007] Gas diffusion layer, the gas diffusion layer includes a first gas diffusion layer and a second gas diffusion layer, the first gas diffusion layer is arranged on the side of the anode catalytic coating away from the proton exchange membrane, and the second gas diffusion layer is arranged on the side of the cathode catalytic coating away from the proton exchange membrane;

[0008] ​A fixed frame, the fixed frame includes a first fixed frame and a second fixed frame, the first fixed frame is arranged on the side of the first gas diffusion layer away from the proton exchange membrane, the second fixed frame is arranged on the side of the second gas diffusion layer away from the proton exchange membrane, the first fixed frame and the second fixed frame are arranged oppositely and press the first gas diffusion layer and the second gas diffusion layer towards the proton exchange membrane, and a sealing structure is formed by fastening through a locking piece.

[0009] Further, along a first direction, the thickness of the proton exchange membrane is [0.07, 0.3] mm; and / or,

[0010] The thickness of the anode catalytic coating is [0.2, 0.8] mm; and / or,

[0011] The thickness of the cathode catalytic coating is [0.1, 0.5] mm; and / or,

[0012] The thickness of the first gas diffusion layer and the second gas diffusion layer is [0.2, 2] mm; and / or,

[0013] The thickness of the first fixed frame and the second fixed frame is [0.5, 3] mm.

[0014] Further, the proton exchange membrane includes any one of a perfluorosulfonic acid type proton exchange membrane, a partially fluorinated polymer membrane, a non-fluorinated polymer proton exchange membrane, and a composite proton exchange membrane.

[0015] Further, the first gas diffusion layer and the second gas diffusion layer each include a nickel-plated stainless steel layer.

[0016] Further, the first fixed frame and the second fixed frame each include a stainless steel frame or a copper metal frame.

[0017] Further, the locking piece includes any one of a bolt, a screw, and a pin.

[0018] Further, along a first direction, the dehumidification structure is provided with an air inlet channel on the side close to the first fixed frame and away from the proton exchange membrane, the air inlet channel is in communication with an indoor space to be dehumidified, the dehumidification structure is provided with an air outlet channel on the side close to the second fixed frame and away from the proton exchange membrane, and the air outlet channel is in communication with the outside and / or the indoor space.

[0019] According to another aspect of the present application, a device is provided, which includes the above-mentioned dehumidification structure based on a proton exchange membrane.

[0020] The technical scheme of the utility model discloses, the first side of proton exchange membrane and the second side opposite to the first side are provided with anode catalytic coating and cathode catalytic coating respectively. - →4H + +O2, hydrogen ion moves to the cathode side under the drive of proton exchange membrane and voltage, and reacts with oxygen on the cathode catalytic coating to generate water (4H + +O2→2H2O), and the generated water is discharged outside, thereby realizing dehumidification. Further, a first fixed frame is arranged on the side of the first gas diffusion layer away from the proton exchange membrane, and a second fixed frame is arranged on the side of the second gas diffusion layer away from the proton exchange membrane, and the first fixed frame and the second fixed frame are oppositely arranged and press the first gas diffusion layer and the second gas diffusion layer towards the proton exchange membrane, and are fastened to form a sealed structure through locking pieces.

[0021] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings constituting a part of the utility model illustrate the utility model further, and the illustrative embodiment and the explanation thereof are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0023] Fig. 1 A whole structure schematic diagram of an embodiment of the dehumidification structure based on the proton exchange membrane is shown according to the utility model;

[0024] Fig. 2 A structure schematic diagram of the fixed frame in the first visual angle of an embodiment of the dehumidification structure based on the proton exchange membrane is shown according to the utility model;

[0025] Fig. 3 A structure schematic diagram of the fixed frame in the second visual angle of an embodiment of the dehumidification structure based on the proton exchange membrane is shown according to the utility model.

[0026] Among them, the above-mentioned drawing includes the following figure marks:

[0027] 10, proton exchange membrane; 20, anode catalytic coating; 21, cathode catalytic coating; 30, first gas diffusion layer; 31, second gas diffusion layer; 40, first fixed frame; 41, second fixed frame; x, first direction. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0029] In order to make the person in the art better understand the utility model scheme, the technical scheme in the utility model embodiments will be described clearly and completely below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the utility model.

[0030] It should be noted that the terms "first", "second" and the like in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, not necessarily to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein. In addition, the terms "include" and "have" and their any modification, are intended to cover non-exclusive inclusion, for example, the process, method, system, product or equipment including a series of steps or units does not necessarily limit to the clearly listed steps or units, but can include other steps or units not clearly listed or inherent to these processes, methods, products or equipment.

[0031] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0032] As mentioned in the background, in the prior art, the dehumidifier has the problems of large vibration noise, large space occupation, and difficulty in adapting to diversified micro environments (such as showcases and transport boxes). In addition, the existing humidity control technology has the problems of complex dehumidification equipment, low humidity control precision, and the risk of refrigerant leakage. Therefore, the present application provides a dehumidification structure based on a proton exchange membrane and a device with the same. The dehumidification structure can adapt to various use scenarios and can achieve precise control of the humidity of the environment to be dehumidified and improve the dehumidification efficiency. The dehumidification structure based on a proton exchange membrane will be described in detail below with reference to the accompanying drawings.

[0033] Referring to Figs. 1-3 The utility model provides a kind of dehumidification structure based on proton exchange membrane, the dehumidification structure based on proton exchange membrane includes: proton exchange membrane 10, gas diffusion layer and fixed frame.

[0034] Specifically, the proton exchange membrane 10 includes a first side and a second side disposed opposite to the first side, the first side is provided with an anode catalytic coating 20, and the second side is provided with a cathode catalytic coating 21; the gas diffusion layer includes a first gas diffusion layer 30 and a second gas diffusion layer 31, the first gas diffusion layer 30 is disposed on the side of the anode catalytic coating 20 away from the proton exchange membrane 10, and the second gas diffusion layer 31 is disposed on the side of the cathode catalytic coating 21 away from the proton exchange membrane 10; the fixed frame includes a first fixed frame 40 and a second fixed frame 41, the first fixed frame 40 is disposed on the side of the first gas diffusion layer 30 away from the proton exchange membrane 10, the second fixed frame 41 is disposed on the side of the second gas diffusion layer 31 away from the proton exchange membrane 10, the first fixed frame 40 and the second fixed frame 41 are oppositely disposed and press the first gas diffusion layer 30 and the second gas diffusion layer 31 towards the proton exchange membrane 10, and a sealing structure is formed by fastening through a locking member (not shown in the figure).

[0035] In the present application, the dehumidification module based on the proton exchange membrane includes the proton exchange membrane 10, and the anode catalytic coating 20 and the cathode catalytic coating 21 are respectively arranged on the first side and the second side disposed opposite to the first side of the proton exchange membrane 10. Under low voltage, the oxygen evolution reaction occurs on the anode catalytic coating 20 to generate oxygen and hydrogen ions (2H2O-4e - →4H +Hydrogen ions, driven by the proton exchange membrane 10 and voltage, move towards the cathode side and react with oxygen on the cathode catalytic coating 21 to produce water (4H+). + The reaction mixture (+O2→2H2O) generates water which is then discharged outdoors, thus achieving dehumidification. A first gas diffusion layer 30 is provided on the side of the anode catalytic coating 20 facing away from the proton exchange membrane 10, and a second gas diffusion layer 31 is provided on the side of the cathode catalytic coating 21 facing away from the proton exchange membrane 10. Both the first gas diffusion layer 30 and the second gas diffusion layer 31 have porous structures, which allows for uniform distribution of the reactant gases. For example, on the anode side, humid air rapidly permeates into the anode catalytic coating 20 through the first gas diffusion layer 30, while on the cathode side, the generated water and hydrogen are smoothly discharged. Furthermore, the high porosity reduces gas transport resistance, avoids localized concentration polarization, and improves dehumidification efficiency. Furthermore, a first fixing frame 40 is provided on the side of the first gas diffusion layer 30 facing away from the proton exchange membrane 10, and a second fixing frame 41 is provided on the side of the second gas diffusion layer 31 facing away from the proton exchange membrane 10. The first fixing frame 40 and the second fixing frame 41 are arranged opposite to each other and press the first gas diffusion layer 30 and the second gas diffusion layer 31 toward the proton exchange membrane 10, and are fastened by locking members to form a sealed structure. Among them, the first fixing frame 40 and the second fixing frame 41 play the roles of support, sealing and fixing. By pressing the gas diffusion layer and the proton exchange membrane 10 together by fixing the frame, it helps to ensure that oxygen (or air) and hydrogen on both sides of the proton exchange membrane 10 do not leak into each other, ensuring the normal operation and safety of the dehumidification structure; it can also ensure the stability of the structure and prevent moisture loss.

[0036] In other words, the proton exchange membrane-based dehumidification structure of this application is compact, occupies little space, and can achieve precise control in a micro-humidity range; and under low voltage control, it can achieve rapid response and continuous dehumidification, improving dehumidification efficiency; moreover, the dehumidification structure has good system stability, durability, and electrocatalytic performance, which can stably ensure the stability of the dehumidification performance of the dehumidification structure; in addition, the dehumidification structure can be adapted to various places that need dehumidification, and has a wide range of application scenarios.

[0037] like Fig. 1 As shown, along the first direction (i.e. Fig. 1The thickness of the proton exchange membrane 10 is [0.07, 0.3] mm in the x direction shown in the figure, and the thickness of the proton exchange membrane 10 can be 0.07 mm, 0.18 mm, 0.25 mm, etc. The thickness of the proton exchange membrane 10 is not limited in the present application, and the thickness of the membrane can be selected according to the actual situation. A thinner membrane is beneficial to the faster transmission of protons in the membrane and the movement of the membrane to the cathode, thereby realizing a more efficient dehumidification process and improving the dehumidification efficiency. In addition, the membrane within the above range can reduce the resistance in the proton transfer process, reduce the membrane resistance, and make the energy loss of the electrochemical reaction smaller during the operation of the dehumidification structure, which is beneficial to improving the energy efficiency of the entire system. A certain thickness can ensure that the proton exchange membrane 10 has sufficient mechanical strength and stability, so that it can withstand a certain pressure and stress during the operation of the dehumidification structure and is not easy to break or be damaged. The thickness of the anode catalytic coating 20 is [0.2, 0.8] mm, and the thickness of the anode catalytic coating 20 can be 0.2 mm, 0.3 mm, 0.5 mm, 0.7 mm, 0.8 mm, etc. The thickness of the anode catalytic coating 20 is not limited in the present application, and the thickness can be determined according to the actual production needs. A suitable thickness of the anode catalytic coating 20 can optimize the reaction, provide sufficient catalytic sites, and enable the electrochemical reaction on the anode side to proceed fully; it can also promote electron conduction, ensure good conduction paths in the coating, and enable the electrons generated by the anode reaction to be quickly transmitted to the cathode side; it is also beneficial to enhance the bonding force, and a proper thickness can enhance the bonding force between the coating and the electrode substrate and the proton exchange membrane 10, improve the stability of the coating during long-term use, and prevent the coating from falling off or being damaged, thereby ensuring the long-term stable operation of the dehumidification structure. The thickness of the cathode catalytic coating 21 is [0.1, 0.5] mm, and the thickness of the cathode catalytic coating 21 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, etc. The thickness of the cathode catalytic coating 21 is not limited in the present application, and the thickness can be determined according to the actual production needs. The cathode catalytic coating 21 provides sufficient active sites for the reduction reaction on the cathode side, enabling oxygen to quickly combine with protons and electrons, promoting the progress of the related reaction, and helping to form conditions on the cathode side that are conducive to water transmission; a suitable thickness of the cathode catalytic coating 21 can ensure the catalytic activity required for the reaction, and will not hinder the transmission of protons, oxygen, water molecules and other substances, so that these substances can smoothly reach the inside of the catalytic layer for reaction; it is also helpful to reduce the overpotential of the cathode, reduce energy loss, and improve the electrochemical reaction rate of the entire dehumidification structure, so that the system can more effectively utilize electrical energy to realize the dehumidification function. The thickness of the first gas diffusion layer 30 and the second gas diffusion layer 31 is [0.2, 2] mm, and the thickness of both can be 0.2 mm, 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, etc. The specific thickness is not limited.Suitable gas diffusion layer is conducive to gas transmission and distribution, and thinner thickness is conducive to rapid diffusion of gas to the surface of the catalytic layer, so that the gas participating in the reaction can be more evenly distributed on the catalytic coating, improving the uniformity and efficiency of the reaction; when thicker, it can provide more gas storage space and transmission channels to ensure that there is enough gas supply to the catalytic layer under different working conditions, especially under complex conditions such as high humidity, to maintain the stable progress of the dehumidification reaction. It is also conducive to drainage and water accumulation, improving the dehumidification effect; it is also conducive to reducing mass transfer resistance and improving dehumidification efficiency; it also helps electron conduction and support, providing an electron channel for electrode reaction and ensuring that the catalytic coating will not be damaged due to external force during the dehumidification process. The thickness of the first fixed frame 40 and the second fixed frame 41 is [0.5, 3] mm, and the thickness of the two is 0.5 mm, 1.0 mm, 2.0 mm, 3.0 mm, etc. The specific thickness is not limited. The suitable thickness of the fixed frame helps the structure to be stable and sealed, providing reliable support and fixation for the entire dehumidification structure and good sealing effect, improving the efficiency and stability of the dehumidification structure; it is also conducive to enhancing mechanical strength and protection, ensuring the stability and reliability of the structure.

[0038] In the present application, the proton exchange membrane 10 includes any one of a perfluorosulfonic acid type proton exchange membrane, a partially fluorinated polymer membrane, a non-fluorinated polymer proton exchange membrane, and a composite proton exchange membrane. Among them, the perfluorosulfonic acid type proton exchange membrane (i.e. Nafion membrane) has high proton conduction and water vapor transmission capacity, and good chemical and mechanical stability, which can ensure the reliability of the dehumidification effect; its surface characteristics make water vapor molecules easy to adsorb on the membrane surface and quickly diffuse in the membrane, thereby improving the dehumidification efficiency. However, before using the membrane, the inlet gas in the environment which may interfere with the proton conduction and water vapor transport performance may need to be pretreated to improve the dehumidification effect. The partially fluorinated polymer membrane has moderate performance and relatively low cost, good hydrothermal stability, and adjustable performance to adapt to different working conditions. However, compared with the Nafion membrane, its proton conductivity, water vapor transport efficiency, and chemical stability are relatively low, and it cannot achieve ideal results in high-demand dehumidification places. The production cost of the non-fluorinated polymer proton exchange membrane is relatively low, the environment is good, the chemical stability is good, and the water absorption rate is high. However, compared with the Nafion membrane, the proton conduction performance is limited, the mechanical strength is relatively low, and the dimensional stability is poor. The preparation process of the composite proton exchange membrane is complex, and the performance stability is uncertain. In summary, the preferred proton exchange membrane 10 in the present application is a Nafion membrane, and it has multiple models, one of which can be selected from N115, N117, N1110, and NC700 in the present application to improve the dehumidification efficiency.

[0039] In the present application, the gas diffusion layer comprises a nickel-plated stainless steel layer. The nickel-plated stainless steel layer has good electrical conductivity. Nickel itself has high electrical conductivity, and when plated on stainless steel, it can ensure good electrical conduction channels for electrochemical reactions in the dehumidification structure, facilitating proton transport and related electrochemical reactions. The nickel-plated layer can effectively improve the corrosion resistance of stainless steel. Nickel can form a dense oxide film on the surface, preventing the internal stainless steel from contacting corrosive substances from the outside. In a dehumidification environment, especially when dealing with gases containing certain humidity and possible corrosive components, the structure can maintain stability well. The nickel-plated stainless steel layer can achieve good gas diffusion and water vapor transmission performance through reasonable surface treatment and pore structure design, allowing humid gas to be evenly distributed on the surface of the proton exchange membrane 10, which is conducive to dehumidification. Moreover, the nickel plating process is mature, which can reduce the production cost of the entire dehumidification structure. The nickel-plated stainless steel layer also has high mechanical strength and hardness, and is not prone to deformation and damage during actual operation.

[0040] However, the commonly used gas diffusion layer in the prior art is titanium felt. Although titanium felt also has certain electrical conductivity, its electrical conductivity is relatively low compared to nickel-plated stainless steel, which may increase resistance and lead to energy loss, affecting dehumidification efficiency. In addition, titanium felt has good corrosion resistance in general environments, but in some specific humid and possibly acidic or alkaline gas environments, its corrosion resistance may not be as good as nickel-plated stainless steel, because the oxide film on the surface of titanium may be damaged by some specific substances. Although titanium felt has high porosity and large pore size, which is beneficial for gas discharge and liquid flow, its pore size and pore structure may not be as precise as the nickel-plated stainless steel layer in matching the requirements of gas diffusion and water vapor transmission in the dehumidification process based on the proton exchange membrane, which may lead to uneven gas distribution and affect dehumidification efficiency.

[0041] In the present application, the fixed frame includes a stainless steel frame or a copper metal frame. In the present application, the fixed frame can use a 304 stainless steel frame or a copper metal frame. Among them, the 304 stainless steel frame has good corrosion resistance, high strength and mechanical stability, good sealing performance, good thermal conductivity, low cost and easy processing and installation; while the copper metal frame has high thermal conductivity, excellent electrical conductivity, good flexibility and aesthetic appearance. In the present application, the use of the above two frames can realize electrical conduction, and the input and output of current can be realized by direct connection or welding with external wires, which can reduce the design of the electrode sheet and reduce the production cost. Of course, in other embodiments of the present application, the fixed frame can also use a fixed frame of other materials, as long as it is a deformation under the concept of the present application, which is within the protection scope of the present application. In the present application, the dehumidification structure based on the proton exchange membrane is powered by a direct current power supply, wherein the direct current voltage is 0.5V-3V. When the voltage is in the range of 0.5V-3V, the electric field strength can make the protons move more effectively in the membrane, thereby accelerating the proton transfer speed and improving the proton conduction efficiency of the proton exchange membrane 10. When the voltage is in the range, the strong electric field generated by the overhigh voltage will not damage the microstructure of the proton exchange membrane 10, and the degradation or aging of the membrane material can be avoided, which is conducive to maintaining the stability and long service life of the proton exchange membrane 10, ensuring that the dehumidification structure can continuously and stably operate; it can also optimize the water transport process and improve the overall dehumidification efficiency; it can also improve the energy utilization efficiency, reduce the operation cost and reduce the safety hidden danger.

[0042] Further, the locking member (not shown in the figure) includes any one of a bolt, a screw and a pin. In the present application, the locking member is used to compress, seal and fix the fixed frame, the gas diffusion layer and the proton exchange membrane 10 provided with the anode catalytic coating 20 and the cathode catalytic coating 21, which helps to improve the sealing performance and improve the dehumidification efficiency and dehumidification accuracy. In the present application, the bolt is preferably used for fixation, and the bolt connection can ensure the stability of the structure; uniformly distribute the pressure, uniformly apply the pressure on the contact surface of the fixed frame, the gas diffusion layer and the proton exchange membrane 10, so that they can be tightly fitted to achieve good sealing; the bolt is also convenient for installation and maintenance, and can be flexibly adjusted to ensure that the installation accuracy of each component in the assembly process of the dehumidification structure is better, so as to improve the dehumidification efficiency of the dehumidification structure. In the dehumidification structure based on the proton exchange membrane, the sealing performance is crucial. The bolt fastening can effectively compress the proton exchange membrane 10 and the gas diffusion layer of the fixed frame, form a good sealing effect, prevent the leakage of humid gas between the components, ensure the efficiency and stability of the dehumidification process, and thus improve the dehumidification performance. The bolt can also maintain the structural performance, avoid the adverse effects on the material performance of the gas diffusion layer and the proton exchange membrane 10, and thus ensure the normal operation and dehumidification effect of the dehumidification structure.

[0043] In the present application, along the first direction, the dehumidification structure is provided with an air inlet channel (not shown in the figure) on the side close to the first fixed frame 40 and away from the proton exchange membrane 10, which is in communication with the indoor space to be dehumidified. In this way, the air inlet channel can guide the indoor air to be dehumidified to the dehumidification structure, ensuring that the humid air can accurately reach the dehumidification components such as the proton exchange membrane 10; the air inlet channel can also evenly distribute the airflow, avoiding the concentration of airflow in certain areas, thereby improving the uniformity and efficiency of the proton exchange membrane 10 in dehumidifying air; in addition, some preliminary filtering or pretreatment devices (not shown in the figure) can be provided in the air inlet channel to prevent impurities from entering the dehumidification structure and causing blockage or damage to the components such as the proton exchange membrane 10, thereby reducing the service life of the dehumidification structure. On the side of the dehumidification structure close to the second fixed frame 41 and away from the proton exchange membrane 10, an air outlet channel (not shown in the figure) is provided, which is in communication with the outside and / or the indoor space. A temperature sensor (not shown in the figure) and a humidity sensor (not shown in the figure) are usually provided in the indoor space to be dehumidified. The air outlet channel can discharge the air that has been dehumidified by the proton exchange membrane 10 from the dehumidification structure, so that it can return to the indoor space or be discharged to the outside environment. If it is discharged to the indoor space, it can improve the dryness of the indoor air and improve the indoor environmental humidity; if it is discharged to the outside, it can directly discharge the humid air to the outside to avoid accumulation in the indoor space and cause the humidity to rise. The air outlet channel cooperates with the air inlet channel to maintain the airflow balance in the entire dehumidification structure. It ensures that enough air flows through the proton exchange membrane 10 for dehumidification, while avoiding problems such as excessive pressure or poor airflow caused by air accumulation in the dehumidification structure, ensuring that the dehumidification process can continue and stabilize.

[0044] In the present application, the anode catalytic coating 20 comprises a mixed coating of platinum, ruthenium oxide, carbon powder and a first binder; or, the anode catalytic coating 20 comprises a mixed coating of platinum, rhodium oxide, carbon powder and a first binder. Among them, platinum has excellent catalytic activity, which can significantly reduce the activation energy of the anode reaction and accelerate the reaction rate. In the proton exchange membrane-based dehumidification structure, some redox reactions are involved to achieve the dehumidification function, and platinum can make these reactions proceed at a relatively low overpotential, improve the reaction efficiency, and thus improve the dehumidification effect. Ruthenium oxide or rhodium oxide also has good catalytic performance, which cooperates with platinum to produce a synergistic effect. Taking ruthenium oxide as an example, it can provide additional active sites in some reactions and promote specific chemical reactions together with platinum, making the entire catalytic process more efficient. For rhodium oxide, it can also work synergistically with platinum to optimize the catalytic reaction path and further enhance the catalytic effect. Carbon powder has good electrical conductivity and can form a conductive network in the anode catalytic coating 20, which helps the rapid transmission of electrons between catalyst particles and between the catalyst and the electrode. This is crucial for maintaining charge balance and electron transfer in the anode reaction, ensuring the smooth progress of the catalytic reaction and improving the electrochemical performance of the entire dehumidification structure. The first binder's role is to firmly bind platinum, ruthenium oxide or rhodium oxide, carbon powder and other components together to form a stable coating structure. It can provide good adhesion between different components, prevent catalyst particles from falling off or agglomerating during use, and ensure that the catalytic coating remains intact and stable during long-term operation, thereby continuously exerting its catalytic effect. Under the premise of ensuring catalytic performance, the introduction of ruthenium oxide or rhodium oxide and carbon powder and other components can reduce the amount of platinum used, thereby reducing material costs.

[0045] Further, the mass ratio of platinum, ruthenium oxide, the first binder and carbon powder in the mixed coating layer is [1:5:1:1, 1:10:1:1]; or the mass ratio of platinum, rhodium oxide, the first binder and carbon powder in the mixed coating layer is [1:5:1:1, 1:10:1:1]. In the present application, the mass ratio of platinum, rhodium oxide, the first binder and carbon powder in the mixed coating layer can be 1:5:1:1, 1:6:1:1, 1:8:1:1 1:10:1:1, etc. In the present application, no specific limitation is made, and selection can be made according to actual production needs. In the present application, the content of ruthenium oxide or rhodium oxide is relatively high, which can fully play its synergistic catalytic effect with platinum, provide abundant active sites for anode reaction, and accelerate the reaction process. The mass ratio of carbon powder to platinum is 1:1, which can ensure good electrical conductivity while providing dispersion support for platinum, so that platinum can better play a catalytic activity and improve the overall electrochemical performance. The mass ratio of the first binder to platinum is 1:1, which can provide sufficient adhesion to firmly combine platinum, ruthenium oxide and carbon powder, form a stable coating structure, reduce the falling or agglomeration of each component during use, and ensure the integrity and long-term stability of the catalytic coating. Further increasing the proportion of ruthenium oxide or rhodium oxide can further enhance the synergistic catalytic effect with platinum, which can maintain high catalytic activity under a wider range of reaction conditions, and help to improve the adaptability and efficiency of the dehumidification structure under different environments. The proportion of ruthenium oxide or rhodium oxide is increased, but the proportion of the first binder and carbon powder remains unchanged, which can still maintain the structural stability and electrical conductivity of the coating, ensure that the physical and chemical properties of the entire coating remain balanced while the catalytic performance is strengthened, and make the dehumidification structure run stably. If the proportion of ruthenium oxide or rhodium oxide is too small, the catalytic activity may be insufficient, the dehumidification efficiency may be reduced, the electrical conductivity of the electrode may be reduced, and the stability of the electrode may be reduced; if the proportion of ruthenium oxide or rhodium oxide is too high, the production cost is increased; if the proportion of ruthenium oxide or rhodium oxide is too high, the stability of the dehumidification structure inside the system is reduced and the catalytic activity is excessive, which is not conducive to the stable operation of the system and the accurate control of humidity. In the mixed coating layer, the specific process is to add platinum, rhodium oxide, the first binder and carbon powder according to the corresponding proportion, mix them, and then scrape and coat them on one side of the proton exchange membrane 10, so as to form an anode catalytic coating layer 20.

[0046] In the present application, the cathode catalytic coating 21 comprises a mixed coating of platinum, graphene and a second binder. In the present application, platinum is a metal with excellent catalytic properties, which can significantly reduce the activation energy of the cathode reaction and accelerate the reaction rate. In the dehumidification structure, the reactions occurring at the cathode are crucial for the efficiency of the entire dehumidification process, and the presence of platinum can make these reactions proceed at a relatively low overpotential, thereby improving the dehumidification effect. Graphene has excellent electrical properties, and its high electrical conductivity can form an efficient electron transport channel in the coating, helping electrons to quickly transfer between catalyst particles and between the catalyst and the electrode, thereby improving the electron transfer efficiency of the reaction. At the same time, there is a synergistic effect between graphene and platinum, which can optimize the electronic structure of the catalyst and further improve the catalytic activity of platinum, so that the two promote each other in the catalytic reaction and improve the overall catalytic performance. In addition, graphene has a large specific surface area, which can provide more attachment sites for platinum, allowing platinum to disperse uniformly on the surface of graphene and increasing the effective surface area of platinum, thereby improving the utilization rate of the catalyst. More active sites mean that more catalytic reactions can be carried out simultaneously, which helps to improve the catalytic efficiency of the cathode and thus improve the performance of the entire dehumidification structure. The second binder serves to firmly bind platinum and graphene together and firmly attach the mixed coating to the surface of the cathode. It can provide good adhesion between platinum and graphene particles, preventing them from falling off or agglomerating during use, ensuring that the catalytic coating remains intact and stable during long-term operation, thereby continuously exerting its catalytic effect. In addition, the binder can also fill the gaps in the coating, improve the density of the coating, reduce the erosion of the coating by electrolytes and other substances, and prolong the service life of the coating.

[0047] Further, the mass ratio of platinum, graphene and the second binder in the cathode catalytic coating 21 is [1:1:1, 1:1:5]. For example, the mass ratio of platinum, graphene and the second binder in the cathode catalytic coating 21 in the present application can be 1:1:1, 1:1:2, 1:1:3, 1:1:4, 1:1:5, etc. When the mass ratio of platinum, graphene and the second binder is 1:1:1, the three can preliminarily form a good synergistic effect. With the increase of the proportion of the second binder, the combination of each component in the coating is more compact, which helps to maintain the stability of the catalytic active site, makes the catalytic performance of platinum fully play, thereby improves the efficiency of the cathode reaction, and further improves the dehumidification effect. When the above components are within the above ratio range, graphene as an excellent conductive material can ensure that the coating has good conductivity even if the proportion of the second binder increases, providing an effective channel for electron transmission. At the same time, the increase of the proportion of the second binder enhances the structural stability of the coating, so that the coating is not easy to fall off or damage in long-term use, ensuring the reliability and durability of the dehumidification structure. However, if the proportion of the second binder is too high, the conductivity will be reduced, the active site exposure will be reduced, the gas diffusion will be affected, and the brittleness of the cathode catalytic coating 21 will be increased, ultimately leading to the reduction of the dehumidification performance and service life of the dehumidification structure. If the proportion of the second binder is too low, it may cause poor structural stability of the coating and loss of the catalyst; less binder cannot disperse and fix the platinum and graphene particles well, which causes the particles to agglomerate, reduces the activity and reaction rate of the catalyst, and further affects the dehumidification performance, etc. In the present application, platinum, graphene and the second binder are mixed in a suitable mass ratio and then coated on the proton exchange membrane 10 to form the cathode catalytic coating 21.

[0048] Further, the first binder and the second binder can both be polyvinylidene fluoride (PVDF), epoxy resin, and water-based polyurethane, etc. The above binders all have good adhesion, chemical stability, good film forming property, electrical insulation performance and thermal stability. The specific selection of which binder needs to be considered comprehensively according to the specific application scenario, performance requirements and cost of the catalytic coating, and the present application does not make specific requirements.

[0049] In order to verify the influence of the mass ratio of the components in the anode catalytic coating 20 and the cathode catalytic coating 21 in the dehumidification structure based on the proton exchange membrane in the present application on the dehumidification efficiency, the following specific examples and comparative examples are provided in the present application:

[0050] Example 1

[0051] In this embodiment, the mass of platinum in the mixed coating of the anode catalytic coating 20 is 1 g, the mass of ruthenium oxide is 5 g, the mass of polyvinylidene fluoride is 1 g, and the mass of carbon powder is 1 g, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating is 1:5:1:1. The dehumidification efficiency of the dehumidification structure is measured to be 30%.

[0052] Example 2

[0053] In the mixed coating of Example 2, the mass of platinum, the mass of polyvinylidene fluoride, and the mass of carbon powder are substantially the same as in Example 1, except that in this embodiment, the mass of ruthenium oxide is 6 g, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating is 1:6:1:1. The dehumidification efficiency of the dehumidification structure is measured to be 34%.

[0054] Example 3

[0055] In the mixed coating of Example 3, the mass of platinum, the mass of polyvinylidene fluoride, and the mass of carbon powder are substantially the same as in Example 1, except that in this embodiment, the mass of ruthenium oxide is 7 g, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating is 1:7:1:1. The dehumidification efficiency of the dehumidification structure is measured to be 46%.

[0056] Example 4

[0057] In the mixed coating of Example 4, the mass of platinum, the mass of polyvinylidene fluoride, and the mass of carbon powder are substantially the same as in Example 1, except that in this embodiment, the mass of ruthenium oxide is 8 g, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating is 1:8:1:1. The dehumidification efficiency of the dehumidification structure is measured to be 48%.

[0058] Example 5

[0059] In the mixed coating of Example 5, the mass of platinum, the mass of polyvinylidene fluoride, and the mass of carbon powder are substantially the same as in Example 1, except that in this embodiment, the mass of ruthenium oxide is 9 g, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating is 1:9:1:1. The dehumidification efficiency of the dehumidification structure is measured to be 50%.

[0060] Example 6

[0061] In the mixed coating of Example 6, the mass of platinum, the mass of polyvinylidene fluoride, and the mass of carbon powder are substantially the same as in Example 1, except that in this embodiment, the mass of ruthenium oxide is 10 g, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating is 1:10:1:1. The dehumidification efficiency of the dehumidification structure is measured to be 55%.

[0062] Example 7

[0063] In this example, the mass of platinum in the mixed coating of the cathode catalytic coating 21 is 1 g, the mass of graphene is 1 g, and the mass of polyvinylidene fluoride is 1 g, and the mass ratio of platinum, graphene, and polyvinylidene fluoride in the mixed coating is 1:1:1. The dehumidification efficiency of the dehumidification structure is measured to be 55%.

[0064] Example 8

[0065] In the mixed coating of Example 8, the mass of platinum and the mass of graphene are substantially the same as in Example 7, except that in this example, the mass of polyvinylidene fluoride is 2 g, and the mass ratio of platinum, graphene, and polyvinylidene fluoride in the mixed coating is 1:1:2. The dehumidification efficiency of the dehumidification structure is measured to be 51%.

[0066] Example 9

[0067] In the mixed coating of Example 9, the mass of platinum and the mass of graphene are substantially the same as in Example 7, except that in this example, the mass of polyvinylidene fluoride is 3 g, and the mass ratio of platinum, graphene, and polyvinylidene fluoride in the mixed coating is 1:1:3. The dehumidification efficiency of the dehumidification structure is measured to be 44%.

[0068] Example 10

[0069] In the mixed coating of Example 10, the mass of platinum and the mass of graphene are substantially the same as in Example 7, except that in this example, the mass of polyvinylidene fluoride is 4 g, and the mass ratio of platinum, graphene, and polyvinylidene fluoride in the mixed coating is 1:1:4. The dehumidification efficiency of the dehumidification structure is measured to be 40%.

[0070] Example 11

[0071] In the mixed coating of Example 11, the mass of platinum and the mass of graphene are substantially the same as in Example 7, except that in this example, the mass of polyvinylidene fluoride is 5 g, and the mass ratio of platinum, graphene, and polyvinylidene fluoride in the mixed coating is 1:1:5. The dehumidification efficiency of the dehumidification structure is measured to be 30%.

[0072] Comparative Example 1

[0073] In the mixed coating of Comparative Example 1, the mass of platinum, the mass of polyvinylidene fluoride, and the mass of carbon powder are substantially the same as in Example 1, except that in this example, the mass of ruthenium oxide is 1 g, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating is 1:1:1:1. The dehumidification efficiency of the dehumidification structure is measured to be 10%.

[0074] Comparative Example 2

[0075] In the mixed coating layer of Comparative Example 2, the mass of platinum, the mass of polyvinylidene fluoride, and the mass of carbon powder were substantially the same as in Example 1, except that in this example, the mass of ruthenium oxide was 3 g, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating layer was 1:3:1:1. The dehumidification efficiency of the dehumidification structure was measured to be 17%.

[0076] Comparative Example 3

[0077] In the mixed coating layer of Comparative Example 3, the mass of platinum, the mass of polyvinylidene fluoride, and the mass of carbon powder were substantially the same as in Example 1, except that in this example, the mass of ruthenium oxide was 12 g, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating layer was 1:12:1:1. The dehumidification efficiency of the dehumidification structure was measured to be 54%.

[0078] Comparative Example 4

[0079] In the mixed coating layer of Comparative Example 4, the mass of platinum, the mass of polyvinylidene fluoride, and the mass of carbon powder were substantially the same as in Example 1, except that in this example, the mass of ruthenium oxide was 15 g, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating layer was 1:15:1:1. The dehumidification efficiency of the dehumidification structure was measured to be 55%.

[0080] Comparative Example 5

[0081] In the mixed coating layer of Comparative Example 5, the mass of platinum and the mass of graphene were substantially the same as in Example 7, except that in this example, the mass of polyvinylidene fluoride was 0.5 g, and the mass ratio of platinum, graphene, and polyvinylidene fluoride in the mixed coating layer was 1:1:0.5. The dehumidification efficiency of the dehumidification structure was measured to be 13%.

[0082] Comparative Example 6

[0083] In the mixed coating layer of Comparative Example 6, the mass of platinum and the mass of graphene were substantially the same as in Example 7, except that in this example, the mass of polyvinylidene fluoride was 0.7 g, and the mass ratio of platinum, graphene, and polyvinylidene fluoride in the mixed coating layer was 1:1:0.7. The dehumidification efficiency of the dehumidification structure was measured to be 24%.

[0084] Comparative Example 7

[0085] In the mixed coating of Comparative Example 7, the mass of platinum and the mass of graphene are substantially the same as in Example 7, except that in this example, the mass of polyvinylidene fluoride is 7 g, and the mass ratio of platinum, graphene, and polyvinylidene fluoride in the mixed coating is 1:1:7, and the dehumidification efficiency of the dehumidification structure is measured to be 11%.

[0086] Comparative Example 8

[0087] In the mixed coating of Comparative Example 8, the mass of platinum and the mass of graphene are substantially the same as in Example 7, except that in this example, the mass of polyvinylidene fluoride is 10 g, and the mass ratio of platinum, graphene, and polyvinylidene fluoride in the mixed coating is 1:1:10, and the dehumidification efficiency of the dehumidification structure is measured to be 2%.

[0088] Table 1

[0089]

[0090] Table 2

[0091]

[0092] According to Table 1: By comparing Example 1 to Example 6, it can be seen that when the mass ratio of each component in the cathode catalytic coating 21 remains unchanged, and the mass of platinum, polyvinylidene fluoride, and carbon powder in the mixed coating of the anode catalytic coating 20 remains unchanged, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating is within the range of [1:5:1:1, 1:10:1:1], the dehumidification efficiency of the proton exchange membrane-based dehumidification structure gradually increases as the mass of ruthenium oxide increases.

[0093] By comparing Example 1 to Example 6, and Comparative Example 1 to Comparative Example 4, it can be seen that when the mass ratio of each component in the cathode catalytic coating 21 remains unchanged, and the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating of the anode catalytic coating 20 is less than 1:5:1:1, the dehumidification efficiency of the dehumidification structure is relatively small; and when the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride, and carbon powder in the mixed coating is greater than 1:10:1:1, the dehumidification efficiency of the dehumidification structure changes relatively little within the range.

[0094] According to Table 2: By comparing Example 7 to Example 11, it can be seen that when the mass ratio of each component in the anode catalytic coating 20 remains unchanged, and the mass of platinum, graphene in the mixed coating of the cathode catalytic coating 21 remains unchanged, and the mass ratio of platinum, graphene, and polyvinylidene fluoride in the mixed coating is within the range of [1:1:1, 1:1:5], the dehumidification efficiency of the dehumidification structure gradually decreases as the mass of polyvinylidene fluoride increases.

[0095] As can be seen from Comparative Example 7 to Example 11 and Comparative Example 5 to Comparative Example 8, when the mass ratio of each component in the anode catalytic coating 20 remains unchanged, the mass ratio of platinum, graphene and polyvinylidene fluoride in the mixed coating of the cathode catalytic coating 21 is less than 1:1:1, the dehumidification efficiency of the dehumidification structure is less than that in [1:1:1, 1:1:5], and the dehumidification efficiency gradually increases with the increase of the mass of polyvinylidene fluoride; and when the mass ratio of platinum, graphene and polyvinylidene fluoride in the mixed coating of the cathode catalytic coating 21 is greater than 1:1:5, the dehumidification efficiency of the dehumidification structure is less than that in [1:1:1, 1:1:5], and the dehumidification efficiency gradually decreases with the increase of the mass of polyvinylidene fluoride.

[0096] Specifically, in the anode catalytic coating 20, if the proportion of ruthenium oxide is small, the number of catalytic active sites provided is limited, which cannot meet the demand of the oxygen evolution reaction, resulting in a slow oxygen evolution reaction rate, which affects the cathode reaction, and ultimately leads to a decrease in dehumidification efficiency. If the mass of ruthenium oxide is too low, the coating may not form a stable catalytic structure, and problems such as falling off and damage may occur. This will reduce the effective area of the anode catalytic coating 20, further reduce the efficiency of the oxygen evolution reaction, and affect the dehumidification effect. If the mass of ruthenium oxide is too high, the oxygen evolution reaction rate will be too fast. This may cause the local potential near the anode to be too high, triggering some side reactions, such as the decomposition of the electrolyte. The side reactions will consume the electrolyte in the electrolytic cell, reduce the amount of substance participating in the main reaction (electrolysis of water), and thus reduce the overall dehumidification efficiency. In addition, too much ruthenium oxide will make the structure of the anode catalytic coating 20 more dense, and the gas diffusion channel narrower. The generated oxygen is difficult to escape from the coating quickly, and a gas film will be formed on the surface of the coating, hindering the subsequent water molecules from reaching the anode catalytic sites, gradually reducing the oxygen evolution reaction rate, and thus affecting the dehumidification efficiency. In the present embodiment, the proportion of ruthenium oxide is higher than the optimal range value, and the dehumidification efficiency does not change much compared with the dehumidification efficiency of the optimal range of ruthenium oxide addition amount. The reason for this phenomenon may be due to experimental errors, limitations of test conditions, or synergistic effects between other components or structures, etc., which still need to be further explored through experiments.

[0097] In the cathode catalytic coating 21, if the proportion of polyvinylidene fluoride is too low, the stability of the coating structure may be poor, and the catalyst may be lost; less adhesive cannot well disperse and fix platinum and graphene particles, causing the particles to agglomerate, reducing the activity and reaction rate of the catalyst, and thus affecting the dehumidification performance, etc. If the proportion of polyvinylidene fluoride is too high, the conductivity will be reduced, the active sites will be reduced, the gas diffusion will be affected, and the brittleness of the cathode catalytic coating 21 will be increased, ultimately leading to a decrease in the dehumidification performance and service life of the dehumidification structure.

[0098] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0099] The application realizes dehumidification by scraping the anode catalytic coating 20 of the mass ratio of platinum, ruthenium oxide, polyvinylidene fluoride and carbon powder in [1:5:1:1, 1:10:1:1] on one side of the proton exchange membrane 10 and scraping the cathode catalytic coating 21 of the mass ratio of platinum, graphene and polyvinylidene fluoride in [1:1:1, 1:1:5] on the other side of the proton exchange membrane 10, arranging the gas diffusion layer on the side of the coating away from the proton exchange membrane 10, and adopting the fixed frame to press and fix the gas diffusion layer, the coating and the proton exchange membrane 10, making water generate oxygen evolution reaction on the anode side under the action of the direct current power source, generating water to discharge outside or used for humidity regulation in the indoor room that is too dry, thereby realizing dehumidification, the dehumidification structure can improve the dehumidification efficiency of the indoor room to be dehumidified, and the humidity of the indoor room can be precisely controlled.

[0100] Again in combination Figs. 1-3 As shown, on the other hand, the application also provides a device, the device comprising the above-mentioned dehumidification structure based on the proton exchange membrane. Exemplarily, the device can be one of a dehumidifier, a dehumidifying dryer, a dustproof dehumidification structure for a power distribution box and a moisture-proof cabinet and the like. The device applies the above-mentioned dehumidification structure based on the proton exchange membrane, and the device can set the appropriate dehumidification structure according to the actual place, thereby precisely controlling the humidity of the indoor room to be dehumidified and improving the dehumidification efficiency.

[0101] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the various examples disclosed herein are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale as the illustrations presented are merely intended to be examples and illustrative of the specification set forth herein. Certain features, aspects, and embodiments of the application can be readily apparent to those skilled in the art and, as such, can be readily adopted for any of the applications discussed herein, and / or in further modified forms. Additionally, the examples set forth herein are not intended to be exhaustive or otherwise limiting, as additional embodiments and / or examples that do not appear here can be contemplated by persons of ordinary skill in the art. Additionally, it is contemplated that individuals skilled in the art will be able to derive other and further examples from the description contained herein without departing from the scope of the present application. No feature, structure, characteristic, component, or step need necessarily be included in the application as described herein, and various configuration modifications can be made to the preferred embodiments by those skilled in the art, without departing from the scope of the present application. Further, the specific numerical examples set forth herein are intended to serve as an example of one aspect of the application and should not be construed as limiting the scope of the application. Thus, other examples of the preferred embodiments can have different values for the numerical expressions set forth herein. It is to be understood that like numerals and letters refer to like items throughout the drawings.

[0102] For purposes of the description hereinafter, spatial terms, such as "above", "below", "upper", "lower", and the like, can be used with reference to the illustrated orientation of one element with respect to another element as placed on the drawings. It will be further understood that the spatial terms are intended to encompass different orientations of the device in its operation or use in different embodiments. For example, if the device described herein is inverted or rotated by 90 degrees (or some other orientation), then those descriptive terms can be interpreted accordingly. Likewise, terms such as "first" and / or "second" can be understood in the context of the description and are utilized merely for purposes of nomenclature and are not intended to limit the scope of the application, unless otherwise specifically indicated. The terms "including", "containing", "having", and "including" are used herein and are open-ended terms, and allow for items or elements to be present or added that are not expressly listed. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein and each separate value is incorporated in the specification as if it were individually recited herein. The indefinite articles "a" and "an" are used herein to mean one or more than one (possibly unlimited) of the elements or steps of which they refer. The terms "about" and "substantially" are used herein to refer to approximate equality, and are intended to encompass minor variations in the value or parameter being described, as would be understood by one of ordinary skill in the art.

[0103] In the description of the present application, it is to be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, in the absence of the opposite description, these orientation words do not indicate and imply that the structure or element referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0104] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A proton exchange membrane based dehumidification structure, characterized by, The device comprises: a proton exchange membrane (10), the proton exchange membrane (10) comprising a first side and a second side arranged opposite to the first side, the first side being provided with an anode catalytic coating (20), and the second side being provided with a cathode catalytic coating (21); a gas diffusion layer, the gas diffusion layer comprising a first gas diffusion layer (30) and a second gas diffusion layer (31), the first gas diffusion layer (30) being arranged on a side of the anode catalytic coating (20) away from the proton exchange membrane (10), and the second gas diffusion layer (31) being arranged on a side of the cathode catalytic coating (21) away from the proton exchange membrane (10); a fixed frame, the fixed frame comprising a first fixed frame (40) and a second fixed frame (41), the first fixed frame (40) being arranged on a side of the first gas diffusion layer (30) away from the proton exchange membrane (10), and the second fixed frame (41) being arranged on a side of the second gas diffusion layer (31) away from the proton exchange membrane (10), the first fixed frame (40) and the second fixed frame (41) being arranged opposite to each other and pressing the first gas diffusion layer (30) and the second gas diffusion layer (31) towards the proton exchange membrane (10), and being fastened to form a sealed structure by a locking member.

2. The proton exchange membrane based dehumidification structure according to claim 1, wherein, In the first direction, the thickness of the proton exchange membrane (10) is [0.07, 0.3] mm; and / or, the thickness of the anode catalytic coating (20) is [0.2, 0.8] mm; and / or, the thickness of the cathode catalytic coating (21) is [0.1, 0.5] mm; and / or, the thickness of the first gas diffusion layer (30) and the second gas diffusion layer (31) is [0.2, 2] mm; and / or, the thickness of the first fixed frame (40) and the second fixed frame (41) is [0.5, 3] mm.

3. The proton exchange membrane based dehumidification structure of claim 1, wherein, The proton exchange membrane (10) comprises any one of a perfluorosulfonic acid type proton exchange membrane, a partially fluorinated polymer membrane, a non-fluorinated polymer proton exchange membrane, and a composite proton exchange membrane.

4. The proton exchange membrane based dehumidification structure of claim 1, wherein, The first gas diffusion layer (30) and the second gas diffusion layer (31) each comprise a nickel-plated stainless steel layer.

5. The proton exchange membrane based dehumidification structure of claim 1, wherein, The first fixed frame (40) and the second fixed frame (41) each comprise a stainless steel frame or a copper metal frame.

6. The proton exchange membrane based dehumidification structure of claim 1, wherein, The locking member comprises any one of a bolt, a screw, and a pin.

7. The proton exchange membrane based dehumidification structure according to any one of claims 1 to 6, wherein, In the first direction, a side of the dehumidification structure close to the first fixed frame (40) and away from the proton exchange membrane (10) is provided with an air inlet channel, the air inlet channel being in communication with an indoor space to be dehumidified, and a side of the dehumidification structure close to the second fixed frame (41) and away from the proton exchange membrane (10) is provided with an air outlet channel, the air outlet channel being in communication with the outside and / or the indoor space.

8. An apparatus, comprising: The device comprises the proton exchange membrane-based dehumidification structure according to any one of claims 1 to 7.

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