Beehive-like hydrogel, moisture power generation device and application

Abstract

The application belongs to the technical field of novel green energy, and particularly discloses a kind of imitated honeycomb hydrogel, moisture power generation device and application, wherein the imitated honeycomb hydrogel is prepared by cross-linking sodium dodecyl benzene sulfonate, lithium acetate and acrylamide monomers at high temperature, the moisture power generation device comprises bottom electrode, imitated honeycomb hydrogel and top electrode from bottom to top.The imitated honeycomb hydrogel can absorb moisture in the environment and transfer ions during the power generation process through the interaction between hydrophilic groups and water molecules, and then absorb the energy generated by the phase change of water molecules to generate electric energy.The moisture power generator has high flexibility and high current density output.The complete imitated honeycomb hydrogel can be repeatedly bent to a large extent without being damaged, and the repeated bending at different angles shows its excellent mechanical strength, and electric energy can be generated at multiple bending angles, with the characteristics of no pollution, clean, sustainable, almost unlimited power generation conditions, etc.

Description

Technical Field

[0001] This invention belongs to the field of novel green energy technology, specifically relating to a honeycomb-like hydrogel, a moisture power generation device, and its application. Background Technology

[0002] The energy crisis and climate change are becoming increasingly severe, posing significant obstacles to high-quality development of the global economy and ecological civilization. Developing new green energy technologies is crucial for promoting the green and low-carbon transformation of the energy system and achieving global carbon neutrality as soon as possible. In recent years, the emerging hydrovoltaic effect, which directly converts water energy into electricity, has emerged as a promising green power generation technology. The hygroelectric generator (HEG) in the hydrovoltaic field is an energy harvesting and conversion device that utilizes ambient moisture to generate electricity. Because ambient moisture is ubiquitous, HEGs are almost completely independent of their operating environment, enabling them to generate electricity anytime, anywhere, offering enormous development potential and becoming a research hotspot in the field of new green energy technologies. However, in related technologies, most research uses expensive hygroscopic materials, and other technical issues such as complex manufacturing processes, low output current density, and low output power remain unresolved, limiting the cost and application scenarios of the devices. Therefore, developing a hygroelectric generator that can effectively overcome these limitations is of groundbreaking significance.

[0003] In related studies, HEGs prepared using graphene oxide films and graphene derivatives have been shown to generate intermittent electrical energy. Later, researchers achieved continuous power generation using HEGs constructed from hydrophilic polymer films and biomass films; however, the output current and power density remain severely limited by poor water collection capabilities and sluggish ion dynamics. Currently, the current density of most HEGs is below 10 μA cm⁻¹. -2 and power density below 10 μW cm -2However, there is still a significant gap between current technology and practical application levels. Furthermore, some HEGs still rely on rectifier circuits to drive small electronic devices, which may lead to additional energy losses and complex circuit designs. Secondly, among a wide range of wet electrostatic materials, the application of semiconductor and graphene-based HEGs in wearable devices is limited by their inherently rigid structures. In addition, HEGs not only require continuous energy harvesting and conversion processes but also need to possess advantages such as environmentally friendly and harmless power-generating materials and simple fabrication processes. However, most previously reported work has focused on output performance, but the materials used are expensive, and the processes are complex and energy-intensive (such as electrospun nanofibers, graphene, and protein nanowires). Therefore, developing a high-power output HEG that can directly drive wearable electronic devices using flexible, low-cost, and simple-process materials is a pressing technical challenge. While challenging, it is of great significance for achieving zero-pollution, zero-carbon emissions, and sustainable energy alternatives.

[0004] Therefore, developing a flexible and sustainable wet gas power generation device and related technologies that are easier to obtain, more environmentally friendly, have abundant reserves and lower prices, are simple to prepare and have high current density output is of great significance for the development and utilization of new green energy. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the existing technology and provide a honeycomb-like hydrogel, a moisture power generation device and its application.

[0006] Hydrogels, as a three-dimensional network structure material formed by cross-linking of hydrophilic polymers, possess unique properties and advantages. Firstly, hydrogels contain a large number of oxygen-containing hydrophilic groups, exhibiting excellent hygroscopic capacity, capable of absorbing several times its own weight in water. Secondly, the unique three-dimensional network structure of hydrogels provides numerous pores, offering an ideal matrix for the embedding and fixation of various functional materials, and demonstrating biomimetic design capabilities. Finally, hydrogels possess excellent flexibility and elasticity, enabling them to adapt to the working requirements of various complex environments. Therefore, hydrogels exhibit strong hygroscopic properties, ionization properties, and environmental adaptability.

[0007] To achieve the above objectives, one of the technical solutions of the present invention is: a method for preparing a simulated honeycomb hydrogel, comprising the following steps: mixing sodium dodecylbenzenesulfonate, lithium acetate, neutral monomer and water in a mass ratio of 2-4:0.5-1.5:7-11:0.5-1.5 to obtain a mixed solution; then adding crosslinking agent N,N'-methylenebisacrylamide and catalyst ammonium persulfate; stirring to remove oxygen; centrifuging to remove bubbles to obtain a honeycomb hydrogel solution; and finally crosslinking the honeycomb hydrogel solution at high temperature to obtain a simulated honeycomb hydrogel.

[0008] The resulting simulated honeycomb hydrogel was stored in a clean petri dish and moisturized with an appropriate amount of deionized water.

[0009] In a preferred embodiment of the present invention, the neutral monomer is at least one of acrylamide, hydroxyalkyl methacrylate, 2,4-pentadienol-1, acrylate derivatives, and N-vinylpyrrolidone.

[0010] In a preferred embodiment of the present invention, the mass ratio of the mixed solution, crosslinking agent, and catalyst is 1500-2500:0.5-1.5:1.5-2.5.

[0011] In a preferred embodiment of the present invention, the thickness of the simulated honeycomb hydrogel is 0.5-5 mm. Those skilled in the art can adjust the thickness of the simulated honeycomb hydrogel according to actual usage requirements to achieve the corresponding power generation efficiency.

[0012] In a preferred embodiment of the present invention, the stirring temperature is 20-40℃, the stirring time is 20-40 min, the bubbling time is 5-15 min, the centrifugation speed is 350-550 rpm, the high-temperature crosslinking temperature is 70-90℃, and the high-temperature crosslinking time is 10-30 min.

[0013] The honeycomb-like hydrogel of this invention is prepared by introducing neutral monomers such as sodium dodecylbenzenesulfonate and lithium acetate, adding crosslinking agent N,N'-methylenebisacrylamide and catalyst ammonium persulfate, and then crosslinking at high temperature. On the one hand, it not only possesses a strong 3D network structure, improving mechanical properties and proton dissociation efficiency, but also features a biomimetic honeycomb structure with high porosity, which not only improves the contact area but also creates a favorable environment for a persistent moisture gradient. This enhances continuous power generation through efficient absorption, transport, and evaporation of moisture, thus endowing it with strong water absorption and ionization capabilities. On the other hand, the Li in the honeycomb-like hydrogel... + The Hofmeister effect induced by this process breaks up the tight bonding network within the hydrogel of the polymer chains, widens the spacing between the polymer chains, and establishes a high-speed highway for ion migration, thereby enabling rapid ion transport. Therefore, the honeycomb hydrogel of this invention can absorb moisture from the environment and, through the interaction between hydrophilic groups and water molecules, perform ion transport during the power generation process, thereby absorbing the energy from the phase transition of water molecules to generate electricity.

[0014] To achieve the above objectives, the second technical solution of the present invention is: a simulated honeycomb hydrogel prepared by the above preparation method.

[0015] To achieve the above objectives, the third technical solution of the present invention is: a moisture power generation device, comprising the above-mentioned simulated honeycomb hydrogel.

[0016] In a preferred embodiment of the present invention, the moisture power generation device includes, from bottom to top, a bottom electrode, a honeycomb-like hydrogel, and a top electrode. The upper surface of the honeycomb-like hydrogel is attached to the top electrode, and the lower surface is attached to the bottom electrode.

[0017] More preferably, the top electrode has a porous structure, which facilitates the adsorption-desorption of gaseous water on the hydrogel surface and the transfer of charge from the top layer of the membrane to the top electrode, thereby improving the current output performance of the wet gas power generation.

[0018] More preferably, the mesh size of the porous structure is 10-400 mesh.

[0019] The mesh count mentioned in this invention is based on Chinese standards, i.e., 10 mesh has an aperture of 2.00 mm.

[0020] In this invention, the term "mesh count" refers to the number of mesh openings per square inch (25.4mm × 25.4mm). Those skilled in the art can adjust the mesh count reasonably according to actual usage.

[0021] More preferably, the material of the top electrode includes, but is not limited to, titanium, copper, gold, silver and platinum.

[0022] More preferably, the material of the bottom electrode includes, but is not limited to, indium tin oxide, titanium, copper, gold, silver, and platinum.

[0023] In a preferred embodiment of the present invention, the relative humidity of the air suitable for the moisture power generation device is 20-100%.

[0024] The above-mentioned moisture power generation device can generate electricity when placed in a normal environment. In addition, the moisture power generation device in this invention needs to continuously absorb moisture under a certain humidity level in order to continuously generate electricity.

[0025] To achieve the above objectives, the fourth technical solution of the present invention is: a method for preparing a moisture power generation device, comprising the following steps: preparing a honeycomb-like hydrogel on the surface of the bottom electrode, and covering the top electrode on the other side of the honeycomb-like hydrogel, thereby obtaining a honeycomb-like hydrogel moisture power generation device with high current density output.

[0026] The moisture power generation device of this invention overcomes the shortcomings of existing power generation devices. It can convert the phase change energy from gaseous water to liquid water into electrical energy for collection, and has the advantages of simple manufacturing process, low cost, no pollution, sustainability, and environmental friendliness. Moreover, compared with the latest bio-nanowire moisture power generation devices in the prior art, this invention mainly utilizes the hydrophilic functional groups contained in the honeycomb-like hydrogel to achieve charged ion separation in water, and promotes the exchange of water molecules at the membrane-air interface through the porous top electrode, that is, to absorb moisture from the air. Water molecules form a humidity gradient difference in the vertical direction inside the hydrogel. As water vapor continuously diffuses from the upper part, a large number of hydrophilic groups in the hydrogel adsorb water molecules. These water molecules can decompose the hydrophilic groups in the membrane into hydrogen and oxygen ions, causing the charge to accumulate near the top. The charge difference between the top and bottom of the hydrogel leads to ion flow, thereby generating an ion concentration gradient between the two electrodes, which in turn generates a potential difference, promotes electron flow and extraction, thereby improving the moisture power generation performance of this device, with lower cost and a simpler and faster preparation method.

[0027] The moisture generator of this invention possesses high flexibility and high current density output. The complete honeycomb-like hydrogel can be repeatedly bent to a great extent without damage; repeated bending at different angles demonstrates its excellent mechanical strength, and it can generate electrical energy at multiple bending angles. A single honeycomb-like hydrogel moisture generator can output up to 328 μA / cm² in an environment with a relative humidity of 60%. -2 The short-circuit current density is more than 10 times that of most previously reported wet gas generators. This is because the sulfonic acid group is a strong acid group with a strong ionization ability. During the absorption process by water molecules, the sulfonic acid group and hydrophilic functional groups are effectively dissociated, releasing a large number of negatively charged groups and positively charged H+ ions. + Protons are released, lowering the chemical potential of water. Simultaneously, during water adsorption, Li... + The induced Hofmeister effect disrupts the hydrogen bonds between water and polymer chains, expands the ion transport channels between polymer chains, and forms a newly established four-hydrogen bond transport network, thereby increasing ionic conductivity and facilitating the transport of hydrated ions and H+. + The rapid directional migration of these molecules results in a high current density output. Furthermore, during spontaneous adsorption, the synergistic effect of ion diffusion, aided by the hydration energy of hydrated ions, converts sensible heat into latent heat, enabling the extraction of thermal energy from the surrounding environment. The change in chemical potential energy can be further converted into electrical energy, thus achieving long-term and stable electrical energy output.

[0028] The moisture-generating device of this invention has continuous voltage and current output and can maintain a stable state for a long time, with a single 0.16cm... 2When exposed to air, a wet generator can continuously generate an open-circuit voltage of 0-0.75 volts and a load current of 0-5 microamps (with an external load resistance of 1 megohm). It can be used as a power source to power electrical appliances such as light bulbs and electronic displays through series or parallel connections. Of course, the honeycomb-like hydrogel, as the core component of the wet generator, naturally has the same efficiency.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. This invention provides a honeycomb-like hydrogel, which is simple and quick to prepare and can be used as a core component of a wet power generation device to build a wet power generation device. Compared with existing core components of wet power generation devices, the honeycomb-like hydrogel in this invention has a simpler preparation process, lower cost, and higher power generation efficiency.

[0031] 2. This invention provides a simple, environmentally friendly, and continuously stable hydrogel-based moisture generator with high current density output. This moisture generator utilizes ambient moisture for continuous power generation, featuring pollution-free operation, sustainable stability, environmental friendliness, and virtually no day-night limitations. It continuously generates an open-circuit voltage of 0-0.75 volts and a load current of 0-5 microamps (with an external load resistance of 1 megohm). Furthermore, a single hydrogel-based moisture generator can output up to 328 μA / cm² in an environment with a relative humidity of 60%. -2 Its short-circuit current density is more than 10 times that of most previously reported wet generators. The simulated honeycomb hydrogel wet generator can be used to power commercial electronic equipment or everyday power generation equipment, offering high economic, environmental, and social benefits. It is of great significance to the development of global carbon neutrality and green energy technologies and also has practical application potential. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the simulated honeycomb hydrogel humidifier generator in Embodiment 2 of the present invention;

[0033] Figure 2 This is a scanning electron microscope image of the honeycomb hydrogel surface of the honeycomb hydrogel aerogenerator in Embodiment 2 of the present invention.

[0034] Figure 3 These are the open-circuit voltage and short-circuit current of the simulated honeycomb hydrogel humid generator in Example 2 and the acrylamide hydrogel humid generator in Comparative Example 1 at a relative humidity of 60%, where (a) is the open-circuit voltage and short-circuit current of the simulated honeycomb hydrogel humid generator in Example 2 at a relative humidity of 60%, and (b) is the open-circuit voltage and short-circuit current of the acrylamide hydrogel humid generator in Comparative Example 1 at a relative humidity of 60%.

[0035] Figure 4 This refers to the load current of the simulated honeycomb hydrogel humid generator in Embodiment 2 of the present invention when connected to a 1 megohm load resistor at a relative humidity of 60%.

[0036] Figure 5 This refers to the open-circuit voltage of the simulated honeycomb hydrogel humidifier generator in Embodiment 2 of the present invention at relative humidity of 20%, 60%, and 90%.

[0037] Figure 6 This is the state of the simulated honeycomb hydrogel humidifier generator in Embodiment 2 of the present invention;

[0038] Figure 7 It is the open-circuit voltage of the simulated honeycomb hydrogel wet generator in the bent state in Embodiment 2 of the present invention;

[0039] Figure 8 This refers to the current density of the simulated honeycomb hydrogel humidifier generator in Embodiment 2 of the present invention at a relative humidity of 60%. Detailed Implementation

[0040] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited to these embodiments.

[0041] Unless otherwise specified, all experimental materials and reagents used are commercially available consumables and reagents.

[0042] The sources of raw materials used in the following embodiments are shown in Table 1.

[0043] Table 1 Sources of raw materials used in the embodiments of the present invention

[0044]

[0045] The hydrophilic functional groups in the honeycomb-like hydrogel ionize after absorbing water. The ionized mobile charged ions move directionally due to the humidity difference on the surface of the honeycomb-like hydrogel, thus forming an electric field. When connected to an external circuit, it can continuously output electrical energy. This continuous output of electrical energy is mainly generated by the continuous moisture exchange on the surface of the honeycomb-like hydrogel. Based on this, a honeycomb-like hydrogel moisture power generation device was constructed.

[0046] Example 1

[0047] A honeycomb-like hydrogel is prepared by the following method:

[0048] Sodium dodecylbenzenesulfonate, lithium acetate, acrylamide, and water were mixed in a mass ratio of 3:1:9.1:0.9 to obtain a mixed solution of 10.5 g. Then, 0.005 g of crosslinking agent N,N'-methylenebisacrylamide and 0.01 g of catalyst ammonium persulfate were added. The mixture was stirred at room temperature (24°C) for 30 minutes, then transferred to a deoxygenation bottle. N2 was bubbled through the mixture for 10 minutes to remove oxygen. The solution was then centrifuged at 450 rpm to remove bubbles, resulting in a homogeneous honeycomb hydrogel solution. Finally, the honeycomb hydrogel solution was poured into a pre-designed mold and placed in an oven at 80°C for crosslinking for 20 minutes to obtain a simulated honeycomb hydrogel. After crosslinking was complete, the mixture was removed from the mold, yielding a simulated honeycomb hydrogel with a thickness of 3 mm.

[0049] In this embodiment, the mold is a hollow mold constructed using conductive glass as the base (the area of ​​the hollow part is 0.4×0.4cm, and the depth is 0.5cm).

[0050] The simulated honeycomb hydrogel prepared in this embodiment was observed using scanning electron microscopy, and the results are as follows: Figure 2 It was found that its surface has a honeycomb-like structure with abundant pores.

[0051] Example 2

[0052] A honeycomb-like hydrogel moisture power generation device, such as Figure 1 As shown, the device comprises, from top to bottom, a porous top electrode, a honeycomb-like hydrogel, and a bottom electrode. The honeycomb-like hydrogel is placed above and adheres to the bottom electrode, while the porous top electrode covers the honeycomb-like hydrogel, thus forming a sandwich-structured device.

[0053] When the simulated honeycomb hydrogel moisture power generation device of this invention is placed in the air, the moisture in the air passes through the porous electrode and comes into contact with the simulated honeycomb hydrogel. Water molecules enter the semi-dry simulated honeycomb hydrogel, inducing charge separation of the hydrophilic functional groups and sulfonic acid groups of the simulated honeycomb hydrogel, releasing freely moving charged ions. These charged ions diffuse from the contact surface between the simulated honeycomb hydrogel and the porous top electrode (the area with high water molecule concentration) to the contact surface between the simulated honeycomb hydrogel and the bottom electrode (the area with low water molecule concentration), forming a stable electric field. After connecting the porous top electrode and the bottom electrode to an external circuit, this electric field can continuously output electrical energy under the influence of air moisture. Choosing a porous top electrode with an area close to that of the bottom electrode to construct the simulated honeycomb hydrogel moisture power generation device can better collect electrons from the top of the simulated honeycomb hydrogel, thereby increasing the current density of the generated electricity.

[0054] The simulated honeycomb hydrogel moisture power generation device is prepared by the following method:

[0055] The simulated honeycomb hydrogel obtained in Example 1 is placed on the bottom electrode of Glass-ITO, and then a porous titanium mesh top electrode (pore size of 150 mesh) slightly smaller than the area of ​​the bottom electrode is placed on the simulated honeycomb hydrogel to obtain the simulated honeycomb hydrogel moisture power generation device.

[0056] Cross-sectional observations were conducted on the constructed simulated honeycomb hydrogel moisture power generation device, such as... Figure 2 As shown, the simulated honeycomb hydrogel was found to be in close contact with the bottom electrode.

[0057] The porous top and bottom electrodes of the simulated honeycomb hydrogel moisture generator obtained in this embodiment were connected to an electrochemical workstation to form a closed-loop circuit, and the generated electrical signal was monitored in real time. It was found that after the simulated honeycomb hydrogel absorbs moisture in air with a relative humidity of 60%, the hydrophilic functional groups on the hydrogel surface ionize to form mobile charged ions. These charged ions move directionally with the humidity on both sides of the hydrogel, creating a potential difference, which allows the simulated honeycomb hydrogel moisture generator to produce a stable open-circuit voltage. Measurements showed that the open-circuit voltage generated by the simulated honeycomb hydrogel moisture generator constructed in Example 1 remained essentially constant at 0.63 volts. Figure 3 As shown in (a). After connecting a 1 megohm external resistor, it was found that the simulated honeycomb hydrogel moisture generator constructed in Example 1 could continuously output a load current of 4.8 microamps, as... Figure 4 As shown. Adjusting the relative humidity, the simulated honeycomb hydrogel moisture power generation device constructed in Example 2 was placed in an environment with a relative humidity of 20%, and it was found that it could generate an open-circuit voltage of 0.17 volts. When the device was placed in an environment with a relative humidity of 90%, it was found that it could generate an open-circuit voltage of 0.75 volts, as shown. Figure 5 As shown, this demonstrates that the device exhibits good moisture power generation performance under air humidity conditions ranging from 20% to 95%, with particularly good performance at humidity levels above 60%, indicating a wide range of applications.

[0058] The bottom electrode of the simulated honeycomb hydrogel moisture generator obtained in this embodiment, which is covered with simulated honeycomb hydrogel, was repeatedly folded and bent, and it was found that it was not damaged, thus demonstrating that the simulated honeycomb hydrogel has high strength and flexibility. Subsequently, the simulated honeycomb hydrogel moisture generator was bent at 90° and placed in an environment with a relative humidity of 60%. The porous top and bottom electrodes of the simulated honeycomb hydrogel moisture generator were connected to an electrochemical workstation to form a closed loop. The generated electrical signal was monitored in real time, and it was found that it could generate an open circuit voltage of 0.60 volts in the bent state, thus demonstrating that the device has good flexibility and can be used as a flexible power supply device.

[0059] The simulated honeycomb hydrogel moisture generator obtained in this embodiment was placed in a humidity-controlled chamber with a relative humidity of 60%, and its current density output was tested for 5000 seconds. It was found that it could output up to 328 μA / cm². -2 Its short-circuit current density is more than 10 times that of most previously reported wet gas generators, and it exhibits good stability, such as... Figure 8 As shown.

[0060] Comparative Example 1

[0061] A moisture-generating device is prepared using the same method as in Example 2, except that an acrylamide hydrogel is used instead of the simulated honeycomb hydrogel. The preparation method of the acrylamide hydrogel is as follows:

[0062] Acrylamide and water were mixed at a mass ratio of 1:10 to obtain a mixed solution of 10.5 g. Then, 0.005 g of N,N'-methylenebisacrylamide (crosslinking agent) and 0.01 g of ammonium persulfate (catalyst) were added. The mixture was stirred at room temperature (24°C) for 10 minutes, then transferred to a deoxygenation bottle. N2 was bubbled through the bottle for 10 minutes to remove oxygen. The solution was then centrifuged at 450 rpm to remove bubbles, resulting in a homogeneous acrylamide solution. Finally, the acrylamide solution was poured into a pre-designed mold and placed in an oven at 80°C for crosslinking for 20 minutes to obtain an acrylamide hydrogel. After crosslinking was complete, the hydrogel was removed from the mold, yielding an acrylamide hydrogel with a thickness of 3 mm.

[0063] The porous top and bottom electrodes of the acrylamide hydrogel wet gas generator obtained in this comparative example were connected to an electrochemical workstation to form a closed-loop circuit, and the generated electrical signals were monitored in real time. The open-circuit voltage and short-circuit current of the acrylamide hydrogel wet gas generator at a relative humidity of 60% are as follows: Figure 3 As shown in (b), it can generate an open-circuit voltage of 0.063 volts and a short-circuit current of 0.48 microamps.

[0064] from Figure 3 (a) and Figure 3 (b) shows that the power output of the simulated honeycomb hydrogel moisture generator is much higher than that of the acrylamide hydrogel moisture generator.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preparing a honeycomb-like hydrogel, characterized in that, The process includes the following steps: Sodium dodecylbenzenesulfonate, lithium acetate, neutral monomer, and water are mixed and stirred in a mass ratio of 2-4:0.5-1.5:7-11:0.5-1.5 to obtain a mixed solution. Then, N,N'-methylenebisacrylamide, a crosslinking agent, and ammonium persulfate, are added. After stirring to remove oxygen, the mixture is centrifuged to remove bubbles, resulting in a honeycomb hydrogel solution. Finally, the honeycomb hydrogel solution is crosslinked at high temperature to obtain a simulated honeycomb hydrogel. The mass ratio of the mixed solution, crosslinking agent, and catalyst is 1500-2500:0.5-1.5:1.5-2.

5. The stirring temperature is 20-40℃, the stirring time is 20-40 min, the bubbling time is 5-15 min, the centrifugation speed is 350-550 rpm, the high-temperature crosslinking temperature is 70-90℃, and the high-temperature crosslinking time is 10-30 min.

2. The method for preparing the simulated honeycomb hydrogel as described in claim 1, characterized in that, The neutral monomer is at least one of acrylamide, hydroxyalkyl methacrylate, 2,4-pentadienol-1, acrylate derivatives, and N-vinylpyrrolidone.

3. A simulated honeycomb hydrogel prepared by the method described in claim 1 or 2.

4. A moisture-generating device, comprising the honeycomb-like hydrogel as described in claim 3.

5. The moisture-generating device as described in claim 4, characterized in that, The moisture power generation device includes, from bottom to top, a bottom electrode, a honeycomb-like hydrogel, and a top electrode. The upper surface of the honeycomb-like hydrogel is attached to the top electrode, and the lower surface is attached to the bottom electrode.

6. The moisture-generating device as described in claim 5, characterized in that, The top electrode has a porous structure, and the materials of the top electrode include, but are not limited to, titanium, copper, gold, silver and platinum. The materials of the bottom electrode include, but are not limited to, indium tin oxide, titanium, copper, gold, silver and platinum.

7. The moisture-generating device as described in claim 4, characterized in that, The relative humidity of the air suitable for the moisture power generation device is 20-100%.

8. A method for preparing a moisture-generating power generation device as described in any one of claims 4-7, characterized in that, Includes the following steps: A honeycomb-like hydrogel is prepared on the surface of the bottom electrode, and the top electrode is covered on the other side of the honeycomb-like hydrogel to obtain a honeycomb-like hydrogel moisture power generation device with high current density output.

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