Wet-based power generation device and preparation method thereof
By designing a wet-based power generation device with a nanofluid diode structure, the problem of large electrical performance differences caused by humidity changes in the existing technology is solved, and the effect of stable and efficient power generation under different humidity conditions is achieved.
Patent Information
- Application Number
- CN202411430327.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-01-21
AI Technical Summary
The current humidity power generation devices have a large difference in electrical output under high humidity and low humidity conditions, and cannot stably generate electrical energy output in a wide humidity environment, and the rectification effect cannot adapt to humidity changes.
Design a wet-based power generation device, including a negatively charged ion donor layer, a positively ionized consumer layer and an adjustment layer. The adjustment layer is a polymer film with a nanopore structure, forming a nanofluid diode to automatically adjust the rectification effect.
It achieves high electrical energy output under both high-humidity and low-humidity conditions, maintains performance at the same level, adapts to atmospheric environments with variable humidity, and provides a reliable and stable energy source.
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Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of humidity power generation, in particular to a wet-based power generation device and a preparation method thereof. Background Art
[0002] Humidity power generation technology, which converts atmospheric moisture into electricity, is expected to alleviate the global energy shortage problem and has been widely studied. Environmental humidity changes all the time due to atmospheric temperature and airflow, and it is crucial to efficiently convert atmospheric water with a wide range of humidity into electricity.
[0003] Humidity power generation is the directional migration of ions inside the material, and the number of ions or charges that migrate per unit time determines the size of the power output. Therefore, the power output under different humidity conditions and the overall power output level can be balanced by increasing the number of charged ions involved in diffusion and enhancing the ion migration rate. In the prior art, there is the introduction of light to excite the pigments in the active material to produce photogenerated electrons, thereby increasing the power output by increasing the number of charged carriers; there is also the introduction of thermal energy to drive water evaporation, using water circulation to drive ion migration and promote power output. The above methods have improved the overall power output or extended the power output time to a certain extent. However, no effective solution has been proposed for the problem of large differences in power output under high humidity and low humidity. The existing use of the rectification effect of nanofluid ion diodes to promote ion separation and improve ion migration efficiency can improve the performance of humidity power generation. However, the humidity power generation structure can only produce ideal power output under high humidity conditions (above 90% RH). The power output under non-high humidity conditions (below 90% RH) is very low, and the performance difference between low humidity conditions and high humidity conditions can be up to 2 orders of magnitude. Therefore, the reliance on high humidity conditions makes it impossible to stably generate electrical energy output in a wide humidity environment. It cannot adapt to the working conditions of the atmospheric environment with variable humidity and cannot provide a reliable and stable energy source under atmospheric humidity.
[0004] The root cause of this shortcoming lies in the humidity power generation device based on ion diode rectification. The rectification effect cannot adapt to the change of humidity, and cannot effectively adjust the migration rate of ions at different humidity to achieve the purpose of producing the same level of electrical output at different humidity. Secondly, the device structure cannot capture and retain moisture well under low humidity conditions. The lack of moisture makes the electrical performance at low humidity much lower than that at high humidity. Although the diode rectification effect can promote ion migration, the reduction in humidity makes the material insufficient to absorb water, which greatly reduces the number of ionized ions and the ion migration rate, and ultimately greatly reduces the electrical performance at low humidity. Therefore, the rectification effect of the diode can promote ion migration at high humidity but cannot play a role at low humidity, and cannot effectively generate electricity in a wide humidity range from low humidity to high humidity. Summary of the invention
[0005] In view of the above problems existing in the prior art, the present invention is proposed.
[0006] Therefore, the problem to be solved by the present invention is how to enable the device to automatically adjust the rectification effect to control the ion migration rate under different humidity conditions, and ultimately achieve the same level of electrical output under low humidity conditions as under high humidity conditions.
[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a wet-based power generation device, comprising a negative ion donor layer, a positive ion donor layer and an adjustment layer stacked in sequence from bottom to top; the negative ion donor layer can ionize negatively charged ions after absorbing moisture; the positive ion donor layer and the adjustment layer form a nanofluid diode at the interface; the adjustment layer is a polymer film with a nanopore structure.
[0008] As a preferred solution of the wet-based power generation device of the present invention, the material of the negative ion donor layer is polydiallyldimethylammonium chloride.
[0009] As a preferred solution of the wet-based power generation device of the present invention, the material of the negative ion donor layer is polyvinyl alcohol.
[0010] As a preferred solution of the wet-based power generation device of the present invention, the material of the positive ion donor layer is anodized aluminum.
[0011] As a preferred solution of the wet-based power generation device of the present invention, the material of the positive ion donor layer is silicon dioxide.
[0012] As a preferred solution of the wet-based power generation device of the present invention, the material of the regulating layer is porous polypyrrole.
[0013] As a preferred solution of the wet-based power generation device of the present invention, an upper electrode and a lower electrode are respectively arranged on the top of the regulating layer and the bottom of the negative ion donor layer, the material of the upper electrode is carbon nanotubes, and the material of the lower electrode is a porous copper film.
[0014] Another object of the present invention is to provide a method for preparing a wet-based power generation device, which is used to prepare the above-mentioned wet-based power generation device, and the preparation method includes providing a positive ion donor layer; forming an adjustment layer on the top of the positive ion donor layer; forming a negative ion donor layer at the bottom of the positive ion donor layer; forming a lower electrode at the bottom of the negative ion donor layer; and forming an upper electrode on the top of the adjustment layer.
[0015] As a preferred solution of the method for preparing the wet-based power generation device of the present invention, the material of the regulating layer is porous polypyrrole.
[0016] As a preferred solution of the method for preparing the wet-based power generation device of the present invention, the regulating layer is deposited on top of the positive ion donor layer by an electrochemical method.
[0017] The beneficial effects of the present invention are as follows: the ion diode of the present invention, whose rectifying effect is automatically adjusted with the change of humidity, coordinates the migration and diffusion of ions well under high humidity and low humidity conditions, ensuring that the humidity power generation device has good and same level of electrical energy output under low humidity to high humidity conditions, making the humidity power generation device better adapt to the atmospheric environment with changeable humidity, and providing electrical energy to external electrical devices more stably. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 Schematic diagram of the structure of a wet-based power generation device.
[0020] Figure 2 Schematic diagram of the working principle of wet-based power generation device.
[0021] Figure 3 Schematic diagram of the device described in Example 1.
[0022] Figure 4 The voltage performance comparison chart of the wet-based power generation device when switching between high and low humidity environments of 15% RH and 93% RH is compared with the voltage performance of the old PN junction-based humidity generator under the same conditions.
[0023] Figure 5 The volt-ampere characteristic curves of the wet-based generator with a ppy structure and the wet-based generator without a ppy structure at a humidity of 15% RH and 93% RH. DETAILED DESCRIPTION
[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.
[0027] Example 1
[0028] Reference Figure 1 to Figure 5 , which is the first embodiment of the present invention, provides a wet-based power generation device, which includes a negative ion donor layer 100 , a positive ion donor layer 200 and an adjustment layer 300 .
[0029] Specifically, the negative ion donor layer 100 is stacked on the bottom of the positive ion donor layer 200 , and the regulating layer 300 is stacked on the top of the positive ion donor layer 200 .
[0030] An upper electrode 400 is deposited on the top of the negative ion donor layer 100, and a lower electrode 500 is deposited on the bottom of the negative ion donor layer 100. Wires are led out of the upper electrode 400 and the lower electrode 500 for connecting to a load.
[0031] Preferably, the positive ion donor layer 200 is anodized aluminum oxide (AAO), the negative ion donor layer 100 is polydiallyldimethylammonium chloride (PDDA), the adjustment layer 300 is porous polypyrrole (PPY), the upper electrode 400 is carbon nanotubes, and the lower electrode 500 is a porous copper film.
[0032] Specifically, in an environment with high chloride ion concentration, the negative charge on the surface of the adjustment layer 300 will increase after the chloride ions are adsorbed, and the nanopores will also shrink as the adsorbed chloride ions increase. The negative ion donor layer 100 will ionize chloride ions after absorbing moisture, and the chloride ions will diffuse into the adjustment layer 300 through the positive ion donor layer 200. When the humidity decreases, the moisture decreases and the chloride ion concentration increases. Under the action of osmotic pressure, the chloride ions enter the adjustment layer 300, thereby increasing the surface potential of the adjustment layer 300.
[0033] The porous material with opposite charges on the solid surface will form a nanofluid diode at the interface. That is, the interface between the adjustment layer 300 and the positive ion donor layer 200 forms a nanofluid diode. The surface charge and nanopore structure of the adjustment layer 300 will automatically adjust their size with the change of humidity. At the same time, the free charged ions diffuse into the nanofluid diode area to form a built-in electric field, and the electric field force generated by the built-in electric field will promote the separation and directional transport of charged ions. The surface potential of the composite film composed of the adjustment layer 300 and the positive ion donor layer 200 is enhanced under low humidity, and the ion diode rectification effect is also enhanced. Therefore, the separation efficiency and migration rate of ions in the composite film are greatly improved under the action of the enhanced internal electric field force. In addition, the reduced nanopores can better absorb and retain moisture, providing good conditions for the ionization and transport of ions. Therefore, the humidity generator also has a higher power output under low humidity.
[0034] Under high humidity conditions, the chloride ion concentration decreases as the moisture in the film increases, the surface potential of the adjustment layer 300 decreases, the diode rectification effect of the composite film weakens, and the ion migration rate decreases. However, the composite film will absorb a large amount of moisture and ionize a large number of ions in a high humidity environment. A large number of ions diffuse freely in the nanochannels. Therefore, the humidity generator also has a higher electrical output under high humidity conditions. Ultimately, the humidity power generation device with an ion diode structure based on the adjustment layer 300, the positive ion donor layer 200, and the negative ion donor layer 100 can generate higher electrical energy output from low humidity to high humidity conditions and the performance remains at the same level. The problem of large differences in electrical properties and unstable electrical output caused by humidity changes has been successfully solved. Figure 4 As shown, Figure 4 The voltage performance comparison diagram of the wet-based power generation device of the present invention when switching between high and low humidity environments of 15% RH and 93% RH is compared with the voltage performance of the humidity generator based on the old PN junction under the same conditions. It can be seen from the figure that the humidity generator has a good rectification effect and stable voltage output performance regardless of whether it is in a high humidity or low humidity environment. In addition, Figure 5 As shown, Figure 5 The volt-ampere characteristic curves of the wet-based generator with and without ppy structure at humidity of 15% RH and 93% RH are shown. It can be seen from the figure that in the presence of ppy, i.e., the adjustment layer 300, the wet-based power generation device of the present invention has a balanced current output performance.
[0035] Preferably, the material of the negative ion donor layer 100 may also be polyvinyl alcohol, and the material of the positive ion donor layer 200 may also be silicon dioxide.
[0036] Example 2
[0037] This is the second embodiment of the present invention. This embodiment provides a method for preparing a wet-based power generation device, which can be used to prepare the wet-based power generation device described in embodiment 1. The preparation method comprises:
[0038] S1: Provide a positively charged ion donor layer 200.
[0039] Specifically, cut the alumina film of appropriate size and spray gold: 2 The 50 μm thick anodized aluminum film was rinsed with deionized water for 3 minutes and dried, and then a 15 nm thick gold layer was sputtered on one side of the surface of the anodized aluminum film using physical vapor deposition as an electrode layer for electrochemical deposition, and a wire was led out through conductive silver paste for use in electroplating.
[0040] S2 : forming the adjustment layer 300 on the top of the positive ion donor layer 200 .
[0041] First, prepare a polypyrrole dispersion. Take 30 ml of a hydrochloric acid solution with a concentration of 0.5 mol / l, add 100 μl of polypyrrole to it, and stir with a glass rod for 5 minutes until the polypyrrole is evenly dispersed. Then use a graphite rod as the counter electrode, Ag / AgCl as the reference electrode, and the wire drawn from the surface of the anodized aluminum as the working electrode. Use an electrochemical workstation and select the cyclic voltammetry test module. Set the starting voltage to -0.1V, the high voltage to 1V, the low voltage to -0.1V, and the end voltage to 1V. Set the scan rate (ScanRate) to 0.1V / s, the Sweep Segments to 4, and the Sensitivity to 1E-002A / V. After the settings are completed, the graphite electrode is connected to the counter electrode, the Ag / AgCl electrode is connected to the reference electrode, and the gold electrode on the surface of the anodized aluminum is connected to the working electrode. Finally, the anodized aluminum is completely immersed in the polypyrrole dispersion and polypyrrole is deposited. The change from gold to black on the surface of the anodized aluminum indicates that the electroplating is successful.
[0042] S3 : forming a negative ion donor layer 100 at the bottom of the positive ion donor layer 200 .
[0043] Specifically, polydiallyldimethylammonium chloride (PDDA) and deionized water were mixed in a weight ratio of 1:2 and stirred for 5 minutes to make them uniformly mixed. 1 ml of the water dispersion of polydiallyldimethylammonium chloride was droplet-coated on the surface of the anodized aluminum film and evenly distributed, and then dried at 70° C. for 10 minutes to form a hydrophilic polymer film.
[0044] S4 : forming a lower electrode 500 at the bottom of the negative ion donor layer 100 .
[0045] Then, 1×1.5cm 2A porous copper film with a thickness of 0.2 mm is attached to the surface of polydiallyldimethylammonium chloride (PDDA) polymer as the lower electrode 500 of the humidity generator. Then, a silver paste is used to connect the wire to the edge of the copper film and dried at 70° C. for 20 minutes to solidify.
[0046] S5 : forming an upper electrode 400 on the top of the adjustment layer 300 .
[0047] Prepare an ethanol dispersion of carbon nanotubes (CNTs), prepare 300 mg of functionalized carbon nanotube powder, OD value 10-30 nm, average length 0.5-2 μm. Put 300 mg of carbon nanotube (CNT) powder into 60 ml of anhydrous ethanol, then use 30 W power to ultrasonically disperse the carbon nanotube (CNT) / ethanol mixture for 2 hours to obtain a uniformly dispersed ethanol suspension of carbon nanotubes (CNTs). Then take 5 ml of the ethanol dispersion of carbon nanotubes (CNTs) and use a spraying method to evenly spray it on the surface of polypyrrole, and the carbon nanotube (CNT) is made as the upper electrode 400 of the humidity power generation device.
[0048] Example 3
[0049] This is the third embodiment of the present invention, which is based on the previous embodiment. This embodiment also provides a method for preparing a wet-based power generation device. The difference from the previous embodiment is that the material of the positive ion donor layer 200 in this embodiment is porous silicon dioxide. The specific preparation method is:
[0050] S1: Size 1×1cm 2 The 50μm thick SiO2 film was rinsed with deionized water for 3 minutes and dried, and then a 15nm thick gold layer was sputtered on one side of the SiO2 surface using physical vapor deposition as an electrochemically deposited electrode layer, and a wire was led out through conductive silver paste for use in electroplating.
[0051] S2: First prepare a polypyrrole dispersion, take 30 ml of a hydrochloric acid solution with a concentration of 0.5 mol / l, add 100 μl of polypyrrole to it, and stir with a glass rod for 5 minutes until the polypyrrole is evenly dispersed. Use an electrochemical workstation, select the cyclic voltammetry test module, set the starting voltage to -0.1 V, the high voltage to 1 V, the low voltage to -0.1 V, and the end voltage to 1 V. Set the scan rate (ScanRate) to 0.1 V / s, the SweepSegments to 4, and the Sensitivity to 1E-002 A / V. After the settings are completed, the graphite electrode is connected to the counter electrode, the Ag / AgCl electrode is connected to the reference electrode, and the gold electrode on the SiO2 surface is connected to the working electrode. Finally, completely immerse SiO2 in the polypyrrole dispersion and begin to deposit polypyrrole.
[0052] S3: Mix polydiallyldimethylammonium chloride (PDDA) and deionized water in a weight ratio of 1:2 and stir for 5 minutes to make them evenly mixed. Take 1 ml of the water dispersion of polydiallyldimethylammonium chloride (PDDA) and apply it to the side of the SiO2 film without polypyrrole and spread it evenly, then dry it at 70°C for 10 minutes to form a hydrophilic polymer film.
[0053] S4: Then 1×1.5cm 2 A porous copper film with a thickness of 0.2 mm is attached to the surface of polydiallyldimethylammonium chloride (PDDA) polymer as the lower electrode 500 of the humidity generator. Then, a silver paste is used to connect the wire to the edge of the copper film and dried at 70° C. for 20 minutes to solidify.
[0054] S5: Prepare an ethanol dispersion of carbon nanotubes (CNTs), prepare 300 mg of functionalized carbon nanotube powder, OD value 10-30 nm, average length 0.5-2 μm. Put 300 mg of carbon nanotube (CNT) powder into 60 ml of anhydrous ethanol, then use 30 W power to ultrasonically disperse the carbon nanotube (CNT) / ethanol mixture for 2 hours to obtain a uniformly dispersed ethanol suspension of carbon nanotubes (CNTs). Then take 5 m of the ethanol dispersion of carbon nanotubes (CNTs) and use a spraying method to evenly spray it on the surface of polypyrrole, and the carbon nanotube (CNT) is made as the upper electrode 400 of the humidity power generation device.
[0055] Example 4
[0056] This is the fourth embodiment of the present invention, which is based on embodiment 2. This embodiment also provides a method for preparing a wet-based power generation device. The difference from embodiment 2 is that the material of the negative ion donor layer 100 in this embodiment is a polyvinyl alcohol (PVA) film doped with a KCl salt solution. The specific preparation method is:
[0057] S1: Size 1×1cm 2 The 50 μm thick anodized aluminum was rinsed with deionized water for 3 minutes and dried, and then a 15 nm thick gold layer was sputtered on one side of the anodized aluminum surface using physical vapor deposition as an electrochemically deposited electrode layer, and a wire was led out through a conductive silver paste for use in electroplating.
[0058] S2: First prepare a polypyrrole dispersion, take 30 ml of a hydrochloric acid solution with a concentration of 0.5 mol / l, add 100 μl of polypyrrole, and stir with a glass rod for 5 minutes until the polypyrrole is evenly dispersed. Use an electrochemical workstation, select the cyclic voltammetry test module, set the starting voltage to -0.1 V, the high voltage to 1 V, the low voltage to -0.1 V, and the end voltage to 1 V. Set the scan rate (ScanRate) to 0.1 V / s, the SweepSegments to 4, and the Sensitivity to 1E-002 A / V. After the settings are completed, the graphite electrode is connected to the counter electrode, the Ag / AgCl electrode is connected to the reference electrode, and the gold electrode on the surface of the anodized aluminum is connected to the working electrode. Finally, the anodized aluminum is completely immersed in the polypyrrole dispersion and polypyrrole is deposited.
[0059] S3: Take 3g of polyvinyl alcohol (PVA) and dissolve it in 30g of deionized water, and add 10ml of 0.3mol / L KCl solution, stir in a 90℃ water bath for 1.5 hours until the polyvinyl alcohol (PVA) is completely dissolved in water to form a solution, and set aside.
[0060] S4: Take 500 μL of polyvinyl alcohol (PVA) solution doped with KCl, drop it on the side of the anodized aluminum film where polypyrrole is not grown and spread it evenly, and then dry it at 70° C. for 10 minutes to solidify the polyvinyl alcohol (PVA) into a film.
[0061] S5: Paste a 1×1.5cm 2 , a 0.2mm thick porous copper film. Then use silver paste to connect the metal wire to the edge of the copper film and dry it at 70℃ for 20 minutes to cure. Use epoxy resin to encapsulate and cure the connection between the silver paste and the wire to prevent the wire from falling off.
[0062] S6: Prepare an ethanol dispersion of graphene and prepare 300 mg of graphene powder. Put 300 mg of powder into 60 ml of anhydrous ethanol, and then use a power of 30 W to ultrasonically disperse the graphene / ethanol mixture for 2 hours to make it evenly dispersed. Then take 5 ml of the ethanol dispersion of graphene and use a spraying method to spray it evenly on the surface of the polypyrrole. The graphene is also made as the upper electrode 400 of the humidity power generation device. Use silver paste to connect the metal wire to the edge of the graphene film electrode, dry it at 70°C for 20 minutes to cure the silver paste, so that the wire and the graphene electrode form a conductive connection, and finally use epoxy resin to encapsulate and cure the connection between the silver paste and the wire to prevent the wire from falling off.
[0063] In summary, the beneficial effects of the present invention are:
[0064] 1. The surface potential of polypyrrole will be enhanced after absorbing chloride ions under high chloride ion concentration conditions, and a humidity power generation device with an ion diode whose rectification effect is enhanced as the humidity decreases is prepared.
[0065] 2. The device increases the surface potential of the composite film under low humidity conditions, thereby enhancing the ion diode rectification effect, allowing ions to quickly separate and migrate in a directional manner under low humidity conditions, thereby increasing the electrical energy output under low humidity conditions.
[0066] 3. After the polypyrrole film absorbs chloride ions under low humidity conditions, the diameter of the nanopores shrinks. Together with the carbon tube film with a high specific surface area, the composite film improves its ability to adsorb and retain water under low humidity conditions. The enhanced water adsorption capacity provides a stable liquid environment under low humidity, creating conditions for the ionization and diffusion of ions, thereby also improving the electrical energy output under low humidity.
[0067] 4. Under high humidity environment, the water absorption of composite film increases, the chloride ion concentration decreases, and the surface potential of polypyrrole decreases. Therefore, the rectification effect of ion diode is weakened, and the ion migration rate is relatively slow. However, the large amount of water absorbed in the film promotes the generation and diffusion of ions, so that it has good power output even in high humidity environment.
[0068] 5. The ion diode, whose rectification effect is automatically adjusted with the change of humidity, coordinates the migration and diffusion of ions well under high and low humidity conditions, ensuring that the humidity power generation device has a good and same level of power output under low to high humidity conditions, so that the humidity power generation device can better adapt to the atmospheric environment with variable humidity and provide power for external electrical devices more stably.
[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. A wet-based power generation device, characterized in that: include, A negative ion donor layer (100), a positive ion donor layer (200) and an adjustment layer (300) stacked in sequence from bottom to top; The negative ion donor layer (100) can ionize negatively charged ions after absorbing moisture; the positive ion donor layer (200) and the regulating layer (300) form a nanofluid diode at the interface; The regulating layer (300) is a polymer film with a nanoporous structure.
2. The wet-based power generation device according to claim 1, characterized in that: The material of the negative ion donor layer (100) is polydiallyldimethylammonium chloride.
3. The wet-based power generation device according to claim 1 or 2, characterized in that: The material of the negative ion donor layer (100) is polyvinyl alcohol.
4. The wet-based power generation device according to claim 3, characterized in that: The material of the positive ion donor layer (200) is anodized aluminum.
5. The wet-based power generation device according to claim 4, characterized in that: The material of the positive ion donor layer (200) is silicon dioxide.
6. The wet-based power generation device according to claim 5, characterized in that: The material of the adjustment layer (300) is porous polypyrrole.
7. The wet-based power generation device according to claim 6, characterized in that: An upper electrode (400) and a lower electrode (500) are respectively arranged on the top of the adjustment layer (300) and the bottom of the negative ion donor layer (100); the material of the upper electrode (400) is carbon nanotubes, and the material of the lower electrode (500) is a porous copper film.
8. A method for preparing a wet-based power generation device, characterized in that: For preparing a wet-based power generation device as claimed in any one of claims 1 to 7, the preparation method comprises: providing a positively charged ion donor layer (200); forming an adjustment layer (300) on top of the positive ion donor layer (200); forming a negative ion donor layer (100) at the bottom of the positive ion donor layer (200); forming a lower electrode (500) at the bottom of the negative ion donor layer (100); An upper electrode (400) is formed on the top of the adjustment layer (300).
9. The method for preparing a wet-based power generation device according to claim 8, characterized in that: The material of the adjustment layer (300) is porous polypyrrole.
10. The method for preparing a wet-based power generation device according to claim 9, characterized in that: The regulating layer (300) is deposited on top of the positive ion donor layer (200) using an electrochemical method.