A humidity power generation device based on cellulose and glass-like polymer composite material and its preparation method and application

Abstract

The present invention discloses a humidity power generation device based on cellulose and glass-like polymer composite materials, and a preparation method and application thereof, comprising the following steps: immersing cellulose material in a nanomaterial solution containing a photothermal conversion effect and drying to obtain a composite material P1; mixing small molecule reactants, catalysts and organic solvents to obtain a glass-like polymer prepolymer, and immersing the composite material P1 in the glass-like polymer prepolymer, and then obtaining the final composite material P2 by photocuring; obtaining a first metal electrode layer and a second metal electrode layer on the upper and lower surfaces of the composite material P2 by screen printing; and configuring wires for the first metal electrode layer and the second metal electrode layer, respectively, to obtain a humidity power generation device of cellulose / glass-like polymer composite materials. The present invention not only has a higher output voltage, but also can withstand high temperature and high humidity and has good mechanical properties, transparency and self-healing properties.

Description

Technical Field

[0001] The present invention belongs to the technical field of humidity power generation of composite materials, and in particular relates to a humidity power generation device based on cellulose and glass-like polymer composite materials, and a preparation method and application thereof. Background Art

[0002] Fossil energy, such as coal, oil and natural gas, plays an extremely important role in modern society. Exploring new green energy has become one of the most important challenges facing the sustainable development of human civilization. In order to solve this problem, various new energy conversion methods have been developed, including photovoltaic power generation, wind power, piezoelectricity, triboelectricity and thermoelectricity.

[0003] Water molecules are ubiquitous in nature. When water molecules interact with special materials and generate carrier concentration differences to generate electricity, humidity power generation has gradually attracted people's attention as a new way of power generation. Existing humidity power generation materials are mainly concentrated in carbon materials, metal oxides, plant fibers and thermoplastic polymer materials. However, existing humidity power generation materials are often difficult to work for a long time under high temperature or high humidity conditions. At the same time, they do not have good flexibility and transparency. Mechanical damage such as scratches and accidental cutting will greatly reduce the voltage output of the material, thus limiting the application of humidity power generation.

[0004] Therefore, how to propose a preparation method for a humidity power generation device that can withstand high temperature and high humidity and have good mechanical properties, transparency and self-healing properties, while achieving mass production has become an important issue that the industry needs to solve urgently. Summary of the invention

[0005] In order to overcome the above technical problems, the purpose of the present invention is to provide a humidity power generation device based on cellulose and glass-like polymer composite materials, and its preparation method and application, which not only has a higher output voltage, but also can withstand high temperature and high humidity and has good mechanical properties, transparency and self-healing properties.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A method for preparing a humidity power generation device based on cellulose and glass-like polymer composite material comprises the following steps;

[0008] (1) The cellulose material is immersed in a nanomaterial solution containing a photothermal conversion effect and dried to obtain a composite material P1;

[0009] (2) mixing a small molecule reactant, a catalyst and an organic solvent to obtain a glass-like polymer prepolymer, and impregnating the composite material P1 in the glass-like polymer prepolymer, and then obtaining a final composite material P2 by photocuring;

[0010] (3) obtaining a first metal electrode layer and a second metal electrode layer on the upper and lower surfaces of the composite material P2 by screen printing;

[0011] (4) Wires are arranged on the first metal electrode layer and the second metal electrode layer respectively to obtain a humidity power generation device of a cellulose and glass-like polymer composite material.

[0012] The mass fraction of the nanomaterial solution with photothermal conversion effect in step (1) is 0.5-2 wt%.

[0013] The nanomaterial solution in step (1) includes but is not limited to a nanosilver wire aqueous solution, a carbon nanotube aqueous solution, a graphene aqueous solution, a carbon black aqueous solution or a Ti3C2 aqueous solution, and the drying method in step (1) is one of infrared light drying and blower drying.

[0014] The small molecule reactants in step (2) include but are not limited to di-5-membered ring carbonate (b5CC), di-6-membered ring carbonate (b6CC), di-7-membered ring carbonate (b7CC), bisphenol A diglycidyl ether (DEGBA), tris(2-aminoethyl)amine (TREN), biomass diamine (Priamine 1074), 1,6-hexanediamine, 1,3-propylene glycol, 1,4-butanediol and fatty acid; the catalyst is one of isopropyl titanate, zinc acetylacetonate and triethanolamine; the organic solvent is one of dichloromethane and anhydrous ethanol;

[0015] In the step (2), the glass-like polymer prepolymer is a polyhydroxyurethane-based glass-like polymer prepolymer, a polycarbonate-based glass-like polymer prepolymer or an epoxy resin-based glass-like polymer prepolymer;

[0016] The preparation method of the polyhydroxy polyurethane glass polymer prepolymer is as follows: one of the small molecular reactants, 5-membered ring carbonate (b5CC), di-6-membered ring carbonate (b6CC) or di-7-membered ring carbonate (b7CC), and one of tris(2-aminoethyl)amine (TREN), biomass diamine (Priamine 1074) or 1,6-hexanediamine are dissolved in an organic solvent, dichloromethane, at a molar ratio of 1:0.5-1:1;

[0017] The preparation method of the polycarbonate-based glass polymer prepolymer is as follows: one of the small molecular reactants, 5-membered ring carbonate (b5CC), di-6-membered ring carbonate (b6CC) or di-7-membered ring carbonate (b7CC), and one of 1,3-propylene glycol and 1,4-butanediol are dissolved in an organic solvent, dichloromethane, at a molar ratio of 1:0.5-1:1, and 1-10 mol% of isopropyl titanate catalyst is added;

[0018] The preparation method of the epoxy resin-based glass-like polymer prepolymer is as follows: a small molecule reaction is to dissolve bisphenol A diglycidyl ether (DEGBA) and fatty acid in an organic solvent anhydrous ethanol at a molar ratio of 1:0.5-1:1, and add 1-10 mol% of zinc acetylacetonate catalyst.

[0019] The light curing in step (2) is ultraviolet light curing; wherein the parameters of the ultraviolet light curing are: the ultraviolet light wavelength is 365 nm, the ultraviolet light intensity is 1-5 mW / cm 2 , the light curing time is 10-30 min.

[0020] In the step (3), the first metal electrode layer and the second metal electrode layer are one of conductive ink, carbon nanotube electrode, gold, silver, copper and aluminum paste.

[0021] In the step (4), the first conductive wire and the second conductive wire are copper wires.

[0022] A humidity power generation device based on cellulose and glass-like polymer composite material, comprising a first metal electrode layer, a composite material layer, a second metal electrode layer, a first wire and a second wire;

[0023] The first and second metal electrode layers are directly printed on the upper and lower surfaces of the composite material layer by screen printing;

[0024] The composite material layer is a transparent and dense film obtained by compounding cellulose and glass-like polymer;

[0025] The first and second conducting wires are directly welded to the surfaces of the first and second metal layers by electric welding.

[0026] The first metal electrode layer and the second metal electrode layer are one of conductive ink, carbon nanotube electrode, gold, silver, copper and aluminum paste.

[0027] The composite material layer is obtained by an impregnation method using cellulose, glass-like polymer material and light-heat conversion nanomaterial as raw materials.

[0028] The cellulose material includes but is not limited to filter paper, commercial toilet paper, commercial printing paper or newspaper; the glass-like polymer material is one of polyhydroxyurethane-based glass polymer, polycarbonate-based glass polymer and epoxy resin-based glass polymer; the photothermal conversion nanomaterial includes but is not limited to nano silver wire, carbon nanotube, graphene, carbon black and Ti3C2.

[0029] The first conductive wire and the second conductive wire are copper wires.

[0030] The humidity power generation device obtained by the present invention not only has a high output voltage, but also can withstand high temperature and high humidity and has good mechanical properties, transparency and self-healing properties, so that it can continue to work in high temperature and high humidity environments, and be applied to flexible wearable fields.

[0031] Beneficial effects of the present invention:

[0032] The composite material layer in the humidity power generation device obtained by the present invention is composed of a nanomaterial with a photothermal conversion effect, a cellulose material with good flexibility, and a three-dimensional network polymer material containing a reversible dynamic bond-a glass-like polymer. A higher ambient temperature can promote the migration of protons, thereby improving the sensitivity and output voltage value of the humidity power generation device. Therefore, the nanomaterial with a photothermal conversion effect can collect solar energy and quickly convert it into thermal energy, thereby ensuring the operating temperature of the humidity power generation device. In addition, the thermal stability of the glass-like polymer allows the device to continue to work in a high temperature and high humidity environment. At the same time, the prepared material body has good mechanical properties, transparency and self-healing properties, and has broad application prospects in the field of smart wearables.

[0033] The humidity power generation device of the present invention can generate an output voltage of 0-0.8 V when the temperature and humidity change, and the performance can be improved by simple series connection, parallel connection, etc., so as to power electrical appliances such as computers.

[0034] The method for preparing the humidity power generation device provided by the present invention has the potential for mass production and has the advantage of large-scale integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The figure is a schematic flow chart of a method for preparing a humidity power generation device according to an embodiment of the present invention.

[0036] Figure 2 This is a schematic diagram of the preparation process of a humidity power generation device according to an embodiment of the present invention.

[0037] Figure 3 The figure is a physical picture and a schematic cross-sectional structure diagram of a humidity power generation device according to an embodiment of the present invention.

[0038] Figure 4This is a test performance diagram of a humidity power generation device under different ambient temperatures according to an embodiment of the present invention.

[0039] Figure 5 This is a voltage test performance diagram of a humidity power generation device in a humidity environment according to an embodiment of the present invention.

[0040] Figure 6 This is a current test performance diagram of a humidity power generation device in a humidity environment according to an embodiment of the present invention.

[0041] Figure 7 This is a polarizing microscope image of multiple self-healing of a humidity power generation device according to an embodiment of the present invention.

[0042] Figure 8 This is a voltage test performance diagram of a humidity power generation device after multiple self-healings according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0044] like Figure 1 As shown, the preparation method of the humidity power generation device provided by the present invention comprises:

[0045] S101, immersing the cellulose material in a nanomaterial solution containing a photothermal conversion effect and drying the solution to obtain a composite material P1;

[0046] Specifically, a certain amount of nanomaterial solution for photothermal conversion is prepared, and then the cellulose material is immersed in the solution, followed by drying. For example, the impregnated cellulose material can be placed in an oven for drying. The nanomaterial solution containing the photothermal conversion effect includes but is not limited to a nanosilver wire aqueous solution, a carbon nanotube aqueous solution, a graphene aqueous solution, a carbon black aqueous solution or a Ti3C2 aqueous solution; the mass fraction of the certain amount of nanomaterial solution containing the photothermal conversion effect can be 0.5 wt%-2 wt%; the cellulose material includes but is not limited to filter paper, commercial toilet paper, commercial printing paper or newsprint.

[0047] S102, mixing a small molecule reactant, a catalyst and an organic solvent to obtain a glass-like polymer prepolymer, and impregnating the composite material P1 in the glass-like polymer prepolymer, and then obtaining a final composite material P2 by curing;

[0048] Specifically, a certain amount of small molecule reactants and catalysts are dissolved in an organic solvent to obtain a glass-like polymer prepolymer. Then, the composite material P1 is immersed in the glass-like polymer prepolymer and cured by ultraviolet light to obtain the final composite material layer P2. The small molecules include but are not limited to 5-membered ring carbonate (b5CC), double 6-membered ring carbonate (b6CC), double 7-membered ring carbonate (b7CC), bisphenol A diglycidyl ether (DEGBA), tris (2-aminoethyl) amine (TREN), biomass diamine (Priamine 1074), 1, 6-hexanediamine, 1, 3-propylene glycol, 1, 4-butanediol and fatty acids; the catalyst is one of isopropyl titanate, zinc acetylacetonate and triethanolamine; the organic solvent is one of dichloromethane or ethanol; the glass-like polymer prepolymer is one of polyhydroxyurethane-based glass-like polymer prepolymer, polycarbonate-based glass-like polymer prepolymer or epoxy resin-based glass-like polymer prepolymer; the UV curing intensity is 1-5 mW / cm 2 , the UV wavelength is 365 nm, and the illumination time is 10-30 min.

[0049] S103, forming a first metal electrode layer and a second metal electrode layer on the upper and lower surfaces of the composite material P2 respectively;

[0050] Specifically, after obtaining the composite material P2, a conductive paste can be applied by screen printing to form a first metal electrode layer and a second metal electrode layer on the surface of the paper-based composite material P2 layer, respectively, and the two metal electrode layers do not contact each other. The conductive paste includes but is not limited to conductive ink, carbon nanotube electrode, gold, silver, copper or aluminum paste.

[0051] S104 , configuring wires for the first metal electrode layer and the second metal electrode layer respectively.

[0052] Specifically, after forming the first metal electrode layer and the second metal electrode layer, wires are led out from the first metal electrode layer and the second metal electrode layer, respectively. The wires are copper wires; the copper wires are welded to the first metal electrode layer and the second metal electrode layer by welding. When the humidity power generation device is in a suitable environment, a large number of freely movable cations will be generated after one side of the composite material P2 interacts with water molecules, and they will migrate directionally along the humidity stimulation direction, so that a potential difference is generated between the electrodes, thereby generating a voltage output.

[0053] On the basis of the above embodiments, the cellulose material is further immersed in a solution containing a nanomaterial for photothermal conversion and dried to obtain a composite material P1, and then immersed in a glass-like polymer prepolymer and cured by ultraviolet light to obtain a final composite material P2, including:

[0054] The cellulose material is immersed in a solution containing a nanomaterial for photothermal conversion and dried to obtain a composite material P1;

[0055] The composite material P1 is immersed in a glass-like polymer prepolymer and then cured by ultraviolet light to obtain a final composite material P2;

[0056] Correspondingly, a first metal electrode layer and a second metal electrode layer are respectively formed on the composite material P2.

[0057] Specifically, the cellulose material is immersed in a solution containing a nanomaterial for photothermal conversion, then dried, and then immersed in the glass-like polymer prepolymer and cured by ultraviolet light to obtain the composite material P2. The first metal electrode layer and the second metal electrode layer are respectively formed on the upper and lower surfaces of the composite material layer by screen printing.

[0058] For example, Figure 2 FIG. 1 is a schematic diagram of the preparation process of a humidity generator according to an embodiment of the present invention. Figure 2 As shown, filter paper is used as the cellulose material, and Ti3C2 is used as the nanomaterial with photothermal conversion. The filter paper is impregnated with a 0.5 wt% Ti3C2 aqueous solution and dried, and then impregnated with a polyhydroxy polyurethane glass polymer prepolymer and cured by ultraviolet light (ultraviolet wavelength 365 nm, light intensity 2.5 mW / cm 2 , the illumination time is 15 min), obtaining the composite material P2; printing conductive paste on the upper and lower surfaces of the paper-based composite material P2 respectively by screen printing to form the first metal electrode layer and the second metal electrode layer; and leading copper wires from the first metal electrode layer and the second metal electrode layer respectively to obtain the humidity power generation device.

[0059] On the basis of the above embodiments, further, the cellulose material includes but is not limited to filter paper, commercial toilet paper, commercial printing paper or newsprint; the photothermal conversion nanomaterial includes but is not limited to nano silver wire, carbon nanotube, graphene, carbon black or Ti3C2; the conductive paste includes but is not limited to conductive ink, carbon nanotube electrode, gold, silver, copper or aluminum paste.

[0060] The glass-like polymer prepolymer of the present invention is prepared by the following steps:

[0061] The small molecule reactants and catalysts are dissolved in an organic solvent to obtain a glass-like polymer prepolymer.

[0062] Specifically, small molecule di-5-membered ring carbonate (b5CC), di-6-membered ring carbonate (b6CC), di-7-membered ring carbonate (b7CC), bisphenol A diglycidyl ether (DEGBA), tris(2-aminoethyl)amine (TREN), biomass diamine (Priamine 1074), 1, 6-hexanediamine, 1, 3-propylene glycol, 1, 4-butylene glycol and two of fatty acids are dissolved in an organic solvent at a molar ratio of 1:0.5-1:1, and then 1 mol%-10 mol% of a catalyst isopropyl titanate, zinc acetylacetonate and triethanolamine are dissolved therein to obtain a glass-like polymer prepolymer. The organic solvent is dichloromethane or ethanol; the glass-like polymer prepolymer is a polyhydroxyurethane-based glass-like polymer prepolymer, a polycarbonate-based glass-like polymer prepolymer or an epoxy resin-based glass-like polymer prepolymer.

[0063] For example, di-6-membered ring carbonate and tris(2-aminoethyl)amine are dissolved in an organic solvent dichloromethane at a molar ratio of 1:0.5 to obtain a polyhydroxyurethane-based glass polymer prepolymer for use in the preparation of the humidity power generation device.

[0064] For example, di-6-membered ring carbonate and 1,3-propylene glycol are dissolved in an organic solvent dichloromethane at a molar ratio of 1:0.5, and then 5 mol% of isopropyl titanate is added to obtain a polycarbonate-based glass polymer prepolymer for the preparation of the humidity power generation device.

[0065] For example, bisphenol A diglycidyl ether (DEGBA) and fatty acid are dissolved in an organic solvent ethanol at a molar ratio of 1:0.5, and then 5 mol% of zinc acetylacetonate is added to obtain an epoxy resin-based glass-like polymer prepolymer for the preparation of the humidity power generation device.

[0066] For example, bisphenol A diglycidyl ether (DEGBA) and fatty acid are dissolved in an organic solvent ethanol at a molar ratio of 1:0.5, and then 5 mol% of triethanolamine is added to obtain an epoxy resin-based glass-like polymer prepolymer for the preparation of the humidity power generation device.

[0067] On the basis of the above embodiments, further, the molar ratio of the small molecule reactants is 1:0.5-1:1. For example, the molar ratio of the small molecule reactants is 1:0.75 or 1:1.

[0068] On the basis of the above embodiments, further, the catalyst content is 1 mol%-10 mol%. For example, the catalyst content is 2 mol%, 6 mol%, 8 mol% or 10 mol%.

[0069] On the basis of the above embodiments, further, the small molecule reactants for preparing the polyhydroxyurethane-based glass polymer prepolymer include but are not limited to 5-membered ring carbonate (b5CC), di-6-membered ring carbonate (b6CC), di-7-membered ring carbonate (b7CC), tris(2-aminoethyl)amine (TREN), and biomass diamine (Priamine 1074); the small molecule reactants for preparing the polycarbonate-based glass polymer prepolymer include but are not limited to di-5-membered ring carbonate (b5CC), di-6-membered ring carbonate (b6CC), di-7-membered ring carbonate (b7CC), 1,3-propylene glycol, and 1,4-butanediol; the small molecule reactants for preparing the epoxy resin-based glass polymer prepolymer include but are not limited to bisphenol A diglycidyl ether (DEGBA) and fatty acids.

[0070] Figure 3 FIG. 1 is a physical diagram and a cross-sectional structural schematic diagram of a humidity power generation device according to an embodiment of the present invention. Figure 3 As shown, the humidity power generation device provided by the present invention comprises a first metal electrode layer, a composite material layer, a first wire and a second wire, wherein;

[0071] The first metal electrode layer and the second metal electrode layer are respectively arranged on the upper and lower surface layers of the composite material layer, the first metal electrode layer is connected to the first wire, and the second metal electrode layer is connected to the second wire.

[0072] Specifically, the composite material layer can be obtained by impregnating paper in a photothermal conversion nanomaterial solution and a glass-like polymer prepolymer, and then curing the paper. The first metal electrode layer and the second metal electrode layer are respectively formed on the upper and lower surfaces of the composite material layer by screen printing. A first wire is led out from the first metal electrode layer, and a second wire is led out from the second metal electrode layer. The first wire can be welded on the first metal electrode layer, and the second wire can be welded on the second metal electrode layer.

[0073] When the humidity power generation device is in a suitable environment, a large number of freely movable cations will be generated after one side of the composite material layer interacts with water molecules, and will migrate in a direction along the humidity stimulation, causing a potential difference between the electrodes, thereby generating a voltage output.

[0074] Figure 4 This is a voltage test performance diagram of a humidity power generation device according to an embodiment of the present invention at different ambient temperatures (the first and second metal electrode layers are copper paste obtained by screen printing). Figure 5 This is a voltage test performance diagram of a humidity power generation device (the first metal electrode layer is aluminum paste obtained by screen printing; the second metal electrode layer is copper paste obtained by screen printing) in an actual environment according to an embodiment of the present invention. Figure 6 This is a current test performance diagram of a humidity power generation device (the first metal electrode layer is aluminum paste obtained by screen printing; the second metal electrode layer is copper paste obtained by screen printing) in an actual environment according to an embodiment of the present invention. Figure 5 and Figure 6 As shown, the cellulose material in the composite material layer is A4 printing paper, the nanomaterial for photothermal conversion is Ti3C2, the glass-like polymer prepolymer is a polyhydroxy polyurethane glass-like polymer prepolymer, and a first metal electrode layer (aluminum) is formed on the upper surface of the paper-based composite material by screen printing, and a second metal electrode layer (copper) is formed on the lower surface, thereby obtaining a humidity conductive device and measuring voltage and current. Since a higher operating temperature can promote the migration of protons, the sensitivity and output voltage value of the humidity power generation device are improved. Therefore, the Ti3C2 with photothermal conversion effect added to the composite material layer can collect solar energy and convert it into thermal energy, thereby ensuring the operating temperature of the humidity power generation device. The minimum voltage generated by the humidity power generation device can be about 600 mV, the maximum short-circuit current generated is about 30 µA, and it can last for more than 1 hour. In addition, the humidity power generation device can continuously power an electronic timer.

[0075] It should be pointed out that the glass-like polymer in the composite material layer has good self-healing properties due to its reversible dynamic covalent bonds. Figure 7 This is a polarized light microscope image of a self-healing humidity power generation device (the first metal electrode layer is aluminum paste obtained by screen printing; the second metal electrode layer is copper paste obtained by screen printing) according to an embodiment of the present invention. First, the surface of the composite material layer is damaged multiple times, and then at 160 o C or infrared light for a period of time, the scratches will gradually heal (the healing rate can reach 96%). Figure 8 As shown, the power generation device assembled from the composite material layers has almost no loss in performance after multiple healings.

[0076] The humidity power generation device has application prospects in the fields of power supply for microelectronic devices or smart wearable devices.

[0077] The humidity power generation device prepared by the humidity power generation method obtained according to the scheme of this embodiment can be produced industrially.

Claims

1. A method for preparing a humidity power generation device based on cellulose and glass-like polymer composite materials, characterized in that: The steps include: (1) The cellulose material is immersed in a nanomaterial solution containing a photothermal conversion effect and dried to obtain a composite material P1; (2) mixing a small molecule reactant, a catalyst and an organic solvent to obtain a glass-like polymer prepolymer, and impregnating the composite material P1 in the glass-like polymer prepolymer, and then obtaining a final composite material P2 by photocuring; (3) obtaining a first metal electrode layer and a second metal electrode layer on the upper and lower surfaces of the composite material P2 by screen printing; (4) arranging wires on the first metal electrode layer and the second metal electrode layer respectively to obtain a humidity power generation device of cellulose and glass-like polymer composite material; The small molecule reactants in step (2) include but are not limited to di-5-membered ring carbonate, di-6-membered ring carbonate, di-7-membered ring carbonate, bisphenol A diglycidyl ether, tri-2-aminoethylamine, biomass diamine, 1,6-hexanediamine, 1,3-propylene glycol, 1,4-butanediol and fatty acid; the catalyst is one of isopropyl titanate, zinc acetylacetonate and triethanolamine; the organic solvent is one of dichloromethane and anhydrous ethanol; In the step (2), the glass-like polymer prepolymer is a polyhydroxyurethane-based glass-like polymer prepolymer, a polycarbonate-based glass-like polymer prepolymer or an epoxy resin-based glass-like polymer prepolymer; The preparation method of the polyhydroxy polyurethane glass polymer prepolymer is as follows: a small molecule reactant, one of 5-membered ring carbonate, di-6-membered ring carbonate or di-7-membered ring carbonate, and one of tri-2-aminoethylamine, biomass diamine or 1,6-hexanediamine are dissolved in an organic solvent, dichloromethane, at a molar ratio of 1:0.5-1:1; The preparation method of the polycarbonate-based glass polymer prepolymer is as follows: a small molecule reactant of 5-membered ring carbonate, di-6-membered ring carbonate or di-7-membered ring carbonate and one of 1, 3-propylene glycol and 1, 4-butanediol are dissolved in an organic solvent of dichloromethane at a molar ratio of 1:0.5-1:1, and 1-10 mol% of isopropyl titanate catalyst is added; The preparation method of the epoxy resin-based glass-like polymer prepolymer is as follows: a small molecule reaction is to dissolve bisphenol A diglycidyl ether and fatty acid in an organic solvent anhydrous ethanol at a molar ratio of 1:0.5-1:1, and add 1-10 mol% of zinc acetylacetonate catalyst.

2. The method for preparing a humidity power generation device based on cellulose and glass-like polymer composite material according to claim 1, characterized in that: The mass fraction of the nanomaterial solution with photothermal conversion effect in step (1) is 0.5-2 wt%.

3. The method for preparing a humidity power generation device based on cellulose and glass-like polymer composite material according to claim 1, characterized in that: The nanomaterial solution in step (1) includes but is not limited to a nanosilver wire aqueous solution, a carbon nanotube aqueous solution, a graphene aqueous solution, a carbon black aqueous solution or a Ti3C2 aqueous solution, and the drying method in step (1) is one of infrared light drying and blower drying.

4. The method for preparing a humidity power generation device based on cellulose and glass-like polymer composite material according to claim 1, characterized in that: The light curing in step (2) is ultraviolet light curing; wherein the parameters of the ultraviolet light curing are: the ultraviolet light wavelength is 365 nm, the ultraviolet light intensity is 1-5 mW and cm 2 , the light curing time is 10-30 min.

5. The method for preparing a humidity power generation device based on cellulose and glass-like polymer composite material according to claim 1, characterized in that: In the step (3), the first metal electrode layer and the second metal electrode layer are one of conductive ink, carbon nanotube electrode, gold, silver, copper, and aluminum paste; In the step (4), the first conductive wire and the second conductive wire are copper wires.

6. A humidity power generation device based on cellulose and glass-like polymer composite material prepared by the method according to any one of claims 1 to 5, characterized in that: It includes a first metal electrode layer, a composite material layer, a second metal electrode layer, a first wire and a second wire; The first and second metal electrode layers are directly printed on the upper and lower surfaces of the composite material layer by screen printing; The composite material layer is a transparent and dense film obtained by compounding cellulose and glass-like polymer; The first and second conducting wires are directly welded to the surfaces of the first and second metal layers by electric welding.

7. A humidity power generation device based on cellulose and glass-like polymer composite material according to claim 6, characterized in that: The first metal electrode layer and the second metal electrode layer are one of conductive ink, carbon nanotube electrode, gold, silver, copper, and aluminum paste; The composite material layer is obtained by an impregnation method using cellulose, glass-like polymer material and light-to-heat conversion nanomaterial as raw materials; The cellulose material includes but is not limited to filter paper, commercial toilet paper, commercial printing paper or newspaper; the glass-like polymer material is one of polyhydroxy polyurethane-based glass-like polymer, polycarbonate-based glass-like polymer and epoxy resin-based glass-like polymer; the photothermal conversion nanomaterial includes but is not limited to nano silver wire, carbon nanotube, graphene, carbon black and Ti3C2; The first conductive wire and the second conductive wire are copper wires.

8. A humidity power generation device based on cellulose and glass-like polymer composite material according to any one of claims 1 to 7, characterized in that: Used in the field of flexible wearables.

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