Leather-based evaporation power generation-seawater desalination device and preparation method and application thereof

Abstract

The application discloses a kind of leather-based evaporation power generation-seawater desalination device and preparation method and application thereof, belong to new energy technical field.The method disclosed in the present application first modifies cortex after being immersed in acid by planting tanning agent, so that the number of hydrophilic groups, such as carboxyl and hydroxyl, contained in the leather collagen fiber is greatly increased, and the tanned leather has good physicochemical stability and excellent mechanical strength, facilitating transportation, storage and the like;Subsequently, the tanned leather is curled into a biomimetic structure of spruce-shaped cone with a sharp top and a round bottom, and upper and lower electrodes are installed on the top and bottom of the spruce-shaped cone, respectively, which can continuously output electric energy and desalinate seawater, has high energy efficiency, and the entire device is small in size, convenient to store and transport during use, and has broad application prospects.

Description

Technical Field

[0001] This invention belongs to the field of new energy technology, specifically relating to a leather-based evaporation power generation-seawater desalination device, its preparation method, and its application. Background Technology

[0002] With the urgent need to accelerate the development and utilization of clean energy, successful evaporation power generation devices or seawater desalination devices have emerged using materials such as sulfur-reducing Geobacterium deposition or polyacrylamide / graphene composite hydrogels. The principle is mainly based on water evaporation from the material surface and capillary action within the material, converting liquid water at the bottom into gaseous water for power generation, or collecting the water vapor to achieve seawater desalination. Its advantages include: abundant raw material reserves, with global water resources containing energy far exceeding the annual energy needs of all humankind; not limited by complex environmental conditions, evaporation power generation and seawater desalination devices can operate in any environment where liquid water is present; the entire process is self-driving, requiring no external energy input, making it an ideal clean energy source.

[0003] However, most current research still suffers from the following shortcomings: the materials used are bacteria and graphene, which are too expensive and difficult to mass-produce; the materials have low physical and chemical stability, making them difficult to store or transport; the average voltage of evaporation power generation devices is generally around 200mV, and the low power density also severely limits their practical application; traditional devices are difficult to effectively resist salt, thus making it difficult to realize the integrated application of "evaporation power generation - seawater desalination". Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention aims to provide a leather-based evaporation power generation-seawater desalination device, its preparation method and application, so as to solve the technical problems of high preparation cost, unsuitability for large-scale production, low capacity efficiency and inconvenience in storage and transportation of existing evaporation power generation or seawater collection devices.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] This invention discloses a method for preparing a leather-based evaporation power generation-seawater desalination device, comprising the following steps:

[0007] S1: Mix the acid-soaked leather with water and alkali and rotate it. Then add vegetable tanning agent and rotate it again until it is thoroughly tanned. Finally, add acid, let it stand and dry to obtain tanned leather.

[0008] S2: Tanned leather is rolled into a spruce-shaped cone with a pointed top and a rounded bottom, and an upper electrode and a lower electrode are installed at the top and bottom of the spruce-shaped cone, respectively, to obtain a leather-based evaporation power generation-seawater desalination device.

[0009] Furthermore, the time for rotating the mixture of acid-soaked leather, water, and alkali is 0.5-1 hour, and the temperature during rotation is 20-25℃; the leather is cowhide, sheepskin, or pigskin; and the alkali is Na2CO3 or NaHCO3.

[0010] Further, after mixing the acid-soaked leather with water and alkali and rotating it, the pH value of the leather is tested to be 4.2-4.8, and then vegetable tanning agents are added; the vegetable tanning agents are bayberry tannin, pomelo tannin, or rubber tannin.

[0011] Furthermore, the tanning time is 1-3 hours and the temperature is 20-25℃; after adding acid, the pH value of the solution used to soak the leather is tested to be 3.8-4.2, and then it is allowed to stand at 20-25℃; the acid is formic acid, acetic acid or sulfuric acid.

[0012] Furthermore, the ratio of the amount of the soaked leather, water, alkali, vegetable tanning agent and acid is (100-200):(100-200):(2-4):(10-20):(1-2).

[0013] The present invention also discloses a leather-based evaporation power generation-seawater desalination device prepared by the above preparation method.

[0014] Furthermore, the height of the spruce-shaped cone is 5-15cm, and the bottom radius of the spruce-shaped cone is 5-12cm; the materials of the upper and lower electrodes are iron, copper, aluminum, gold, silver, titanium, platinum, or carbon nanotubes; the height difference between the upper and lower electrodes in the vertical direction is 3-10cm.

[0015] This invention also discloses the application of the above-mentioned leather-based evaporation power generation-seawater desalination device, which includes the following steps when performing evaporation power generation and seawater desalination:

[0016] Dissolve 20-35 parts of sodium chloride in 500-1000 parts of deionized water by mass, and stir until completely dissolved to obtain simulated seawater; first place the leather-based evaporation power generation-seawater desalination device in a transparent sealed cover, and then add 500-1000 parts of simulated seawater into the transparent sealed cover.

[0017] Furthermore, the transparent sealing cover includes a base plate, several side plates, and a top plate; one end of each of the side plates is vertically disposed on the four sides of the base plate; the top plate covers the other end of the side plates; a seawater containing tank is provided on the upper surface of the base plate; the leather-based evaporation power generation-seawater desalination device is placed in the seawater containing simulated seawater; and freshwater tanks containing fresh water are fixedly disposed around the seawater containing tanks.

[0018] Furthermore, the temperature of the leather-based evaporation power generation-seawater desalination device during evaporation power generation and seawater desalination is 10-70℃, and the relative humidity is 20-70%; the longitudinal section of the top plate is triangular, and the cross section is square; the material of the transparent sealing cover is glass, polymethyl methacrylate, polyethylene, or polypropylene; the length of the long side and the width side of the bottom plate are both 30cm; the height of the side plate is 40cm; and the length × width × height of the seawater receiving tank is 30cm × 5cm × 10cm.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention discloses a method for preparing a leather-based evaporative power generation-seawater desalination device. First, the acid-treated leather is modified with a vegetable tanning agent, significantly increasing the number of hydrophilic carboxyl and hydroxyl groups in the collagen fibers. The resulting tanned leather's main component, collagen, is composed of super-helical fibers formed by three different peptide chains intertwined, containing abundant pores and a multi-layered structure similar to spruce branches and leaves. This tanned leather also exhibits good physicochemical stability and excellent mechanical strength, facilitating transportation and storage. Next, the tanned leather is rolled into a biomimetic spruce-shaped cone with a pointed top and rounded bottom. Upper and lower electrodes are then installed at the top and bottom of this cone. The spruce structure provides a large energy-receiving area, and its needles and branches form a complex multi-layered structure with good water utilization efficiency. When one end of the vegetable-tanned leather comes into contact with liquid water, liquid water molecules continuously enter the leather under the impetus of capillary action and evaporation. The hydrophilic functions in the leather... When the functional groups come into contact with water molecules, they ionize. The resulting free charged particles move relative to the liquid water and water vapor as they flow along the pores inside the leather, creating a potential difference. If a closed-loop circuit is formed, electrical energy can be output. Water molecules entering the leather are gradually lost into the air through evaporation. The water vapor can then be collected by condensing and recirculating it, completing a series of operations from evaporation to power generation to seawater desalination. The preparation method disclosed in this invention is low-cost, simple, and suitable for mass production. Furthermore, the leather used as the raw material has abundant pores and a multi-layered structure with numerous hydrophilic functional groups. The vegetable tanning agent is obtained from tannin-rich plant materials through water extraction and concentration, making it an inexhaustible resource. Compared to existing sulfur-reducing bacteria or graphene materials, the leather material in this invention is low-cost, simple to prepare, and organically combines evaporation power generation and seawater desalination functions, showing broad application prospects.

[0021] This invention also discloses a leather-based evaporative power generation-seawater desalination device prepared by the above-described method. This device, made of tanned leather, is a spruce-shaped evaporative power generation-seawater desalination device that achieves a large power output density and a high freshwater yield. It can continuously generate electricity using the liquid water evaporation process, representing an improvement of more than two orders of magnitude compared to previous hydroelectric power generation research. In addition, it provides an abundant raw material: leather is a rich natural biomass resource, widely existing in the natural environment. It has the characteristics of simple cultivation conditions, large biomass, and renewability, making it a rich and widely available source for use in this device.

[0022] This invention also discloses the application of the above-mentioned leather-based evaporation power generation-seawater desalination device. During evaporation power generation and seawater desalination, due to the multi-level, multi-channel microstructure and "spruce"-like macroscopic three-dimensional structure of leather, the movement of salt ions is effectively prevented and their reflux is caused. Therefore, salt ions cannot be deposited on the surface of the device to further improve the working efficiency and sustainability of the device. It can achieve the purpose of continuous output of electrical energy and seawater desalination, with high production efficiency. Moreover, the entire device is small in size and convenient for storage and transportation during use, and has broad application prospects. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the leather-based evaporation power generation-seawater desalination device of the present invention, which has a spruce biomimetic structure.

[0024] Figure 2 This is a schematic diagram illustrating the evaporation power generation principle of the leather-based evaporation power generation-seawater desalination device of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the leather-based evaporation power generation-seawater desalination device of the present invention.

[0026] Wherein: 1-Transparent sealing cover; 2-Bottom plate; 3-Side plate; 4-Top plate; 5-Seawater tank; 6-Freshwater tank; 7-Upper electrode; 8-Lower electrode. Detailed Implementation

[0027] To enable those skilled in the art to understand the features and effects of the present invention, the terms and expressions used in the specification and claims are explained and defined in general below. Unless otherwise specified, all technical and scientific terms used herein have the ordinary meaning understood by those skilled in the art regarding the present invention, and in case of conflict, the definitions in this specification shall prevail.

[0028] The theories or mechanisms described and disclosed herein, whether right or wrong, should not in any way limit the scope of the invention, that is, the contents of the invention can be implemented without being limited by any particular theory or mechanism.

[0029] In this document, all features defined by numerical ranges or percentage ranges, such as numerical values, quantities, contents, and concentrations, are for the sake of brevity and convenience only. Accordingly, descriptions of numerical ranges or percentage ranges should be considered as covering and specifically disclosing all possible sub-ranges and individual numerical values ​​(including integers and fractions) within those ranges.

[0030] In this article, unless otherwise specified, “contains,” “includes,” “containing,” “has,” or similar terms cover the meanings of “composed of” and “mainly composed of,” for example, “A contains a” covers the meanings of “A contains a and others” and “A contains only a.”

[0031] For the sake of brevity, not all possible combinations of the technical features in each implementation scheme or embodiment are described herein. Therefore, as long as there is no contradiction in the combination of these technical features, the technical features in each implementation scheme or embodiment can be combined arbitrarily, and all possible combinations should be considered within the scope of this specification.

[0032] This invention discloses a method for preparing a leather-based evaporation power generation-seawater desalination device, comprising the following steps:

[0033] Step 1: By weight, place 100-200 parts of the acid-soaked leather in a drum, add 100-200 parts of water and 2-4 parts of alkali, and rotate at 20-25℃ for 0.5-1 hours. Check that the pH of the leather is 4.2-4.8. Then add 10-20 parts of vegetable tanning agent, and rotate at 20-25℃ for 1-3 hours until fully tanned. Finally, add 1-2 parts of acid. At the end, check that the pH of the solution is 3.8-4.2. After standing overnight at 20-25℃, take it out and air dry until completely dry to obtain tanned leather.

[0034] Step 2: Take 10-20 parts by weight of the tanned leather obtained in step 101, roll it into a "spruce" shape with a pointed top and a rounded bottom, and install the upper electrode 7 and the lower electrode 8 on the top and bottom to obtain a leather-based evaporation power generation-seawater desalination device.

[0035] like Figure 1 and Figure 3As shown, this invention discloses a leather-based evaporation power generation-seawater desalination device. During evaporation power generation and seawater desalination, the leather-based evaporation power generation-seawater desalination device is first placed in a transparent sealed cover 1. The transparent sealed cover 1 is a hollow, uncovered cube formed by a base plate 2 and several side plates 3. One end of each side plate 3 is directly mounted on the four sides of the base plate 2, and a top plate 4 covers the other ends of the side plates 3. A seawater containing simulated seawater is provided on the base plate 2. The leather-based evaporation power generation-seawater desalination device is placed inside the seawater containing simulated seawater in the seawater containing ...

[0036] The base plate 2 has a length of 30cm for both its long and wide sides; the side plate 3 has a height of 40cm; the seawater container 5 has a length × width × height of 30cm × 5cm × 10cm; the leather-based evaporation power generation-seawater desalination device operates at a temperature of 10-70℃ and a relative humidity of 20-70% during evaporation power generation and seawater desalination; the transparent sealing cover 1 is made of glass, polymethyl methacrylate, polyethylene, or polypropylene.

[0037] The leather-based "spruce" device of the present invention integrates "evaporation power generation - seawater desalination" and can generate electricity and desalinate seawater at different ambient temperatures, such as 10°C, 50°C, 80°C, etc. The power generation and seawater desalination efficiency are directly proportional to the ambient temperature.

[0038] The leather-based evaporative power generation and seawater desalination device of the present invention can generate electricity and desalinate seawater under different relative humidity conditions, such as relative humidity of 20%, 40%, 70%, etc. The power generation and seawater desalination efficiency increases as the ambient relative temperature decreases.

[0039] The leather-based evaporation power generation-seawater desalination device of this invention can further improve power generation and seawater desalination performance through series and parallel connections. The generated electricity is stored in commercial capacitors to provide energy for small electrical appliances; the produced fresh water can be directly used for household water use.

[0040] Figure 2 The diagram illustrates the evaporation power generation principle of the leather-based evaporation power generation-seawater desalination device of this invention. When one end of the vegetable-tanned leather comes into contact with liquid water, liquid water molecules continuously enter the leather under the impetus of capillary action and evaporation. Upon contact with water molecules, the hydrophilic functional groups in the leather ionize, and the resulting free charged particles move relative to the liquid water and water vapor along the pores within the leather, creating a potential difference. If a closed-loop circuit is formed, electrical energy can be output. Furthermore, the water molecules entering the leather are gradually lost into the air through evaporation. At this point, only condensation and reflux of the water vapor are needed to collect fresh water, completing the evaporation power generation-seawater desalination process.

[0041] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0042] The following examples use instruments and equipment conventional in the art. Experimental methods in the following examples, unless otherwise specified, are generally performed under conventional conditions or as recommended by the manufacturer. All raw materials used in the following examples are conventional commercially available products with specifications conventional in the art. In this specification and the following examples, unless otherwise specified, "%" refers to weight percentage, "parts" refers to parts by weight, and "ratio" refers to weight proportion.

[0043] Example 1

[0044] A method for preparing a leather-based evaporation power generation-seawater desalination device includes the following steps:

[0045] S1: By mass, 100 parts of acid-soaked cowhide were placed in a drum, 100 parts of water and 2 parts of NaHCO3 were added, and the drum was rotated at 25°C for 0.5 hours. The pH of the leather was checked and found to be approximately 4.5. Then, 10 parts of tannin were added and the drum was rotated until fully tanned. Finally, 1 part of formic acid was added. At the end, the pH of the solution was checked and found to be approximately 4.1. After standing overnight, the leather was removed and dried until completely dry to obtain tanned leather. The shrinkage temperature of the obtained tanned leather was 78°C, the tensile strength was 6.4 MPa, the elongation at break was 712%, and the contact angle was 33°.

[0046] S2: Ten portions of tanned leather are rolled into a spruce-shaped cone with a pointed top and a rounded bottom. An upper electrode 7 and a lower electrode 8 are installed at the top and bottom of the spruce-shaped cone, respectively, to obtain a leather-based evaporation power generation-seawater desalination device. The vertical height difference between the upper electrode 7 and the lower electrode 8 is 10 cm, and the materials of the upper electrode 7 and the lower electrode 8 are both metallic gold.

[0047] Example 2

[0048] A method for preparing a leather-based evaporation power generation-seawater desalination device includes the following steps:

[0049] S1: By mass, 200 parts of the acid-soaked sheepskin were placed in a drum, 20 parts of water and 4 parts of NaHCO3 were added, and the mixture was rotated at 25°C. The pH value of the leather was checked to be approximately 4.6. Then, 20 parts of citrus tannin were added and the mixture was rotated until fully tanned. Finally, 2 parts of formic acid were added, and the pH value of the solution was checked to be approximately 4.0 at the end. The mixture was left to stand overnight and then dried until completely dry to obtain tanned leather. The shrinkage temperature of the obtained tanned leather was 83°C, the tensile strength was 7.3 MPa, the elongation at break was 856%, and the contact angle was 103°.

[0050] S2: Ten portions of tanned leather are rolled into a spruce-shaped cone with a pointed top and a rounded bottom. An upper electrode 7 and a lower electrode 8 are installed at the top and bottom of the spruce-shaped cone, respectively, to obtain a leather-based evaporation power generation-seawater desalination device. The vertical height difference between the upper electrode 7 and the lower electrode 8 is 10 cm, and the materials of the upper electrode 7 and the lower electrode 8 are both metallic gold.

[0051] Example 3

[0052] A method for preparing a leather-based evaporation power generation-seawater desalination device includes the following steps:

[0053] S1: By mass, 170 parts of pigskin were placed in a drum, and 170 parts of water and 3.4 parts of NaHCO3 were added. The drum was rotated at 25°C for 1 hour, and the pH value of the skin was checked to be approximately 4.4. Then, 17 parts of citrus tannin were added and the drum was rotated until fully tanned. Finally, 1.7 parts of acetic acid were added, and the pH value of the solution was checked to be approximately 4.1 at the end. After standing overnight, the solution was removed and dried until completely dry to obtain tanned leather. The shrinkage temperature of the obtained tanned leather was 77°C, the tensile strength was 6.7 MPa, the elongation at break was 780%, and the contact angle was 36°.

[0054] S2: Ten portions of tanned leather are rolled into a spruce-shaped cone with a pointed top and a rounded bottom. An upper electrode 7 and a lower electrode 8 are installed at the top and bottom of the spruce-shaped cone, respectively, to obtain a leather-based evaporation power generation-seawater desalination device. The vertical height difference between the upper electrode 7 and the lower electrode 8 is 8 cm, and the materials of the upper electrode 7 and the lower electrode 8 are both metallic gold.

[0055] Application Example 1

[0056] The leather-based evaporation power generation-seawater desalination device described in Example 1 includes the following steps when performing evaporation power generation and seawater desalination:

[0057] By mass, 35 parts of sodium chloride were dissolved in 1000 parts of deionized water and stirred until completely dissolved to obtain simulated seawater. The leather-based evaporation power generation-seawater desalination device from Example 1 was placed in the center of the transparent sealed cover 1, and simulated seawater was added to the seawater containing tank 5 to realize the integrated application of "evaporation power generation-seawater desalination". The ambient temperature during use was 20°C and the relative humidity was 40%. The material of the transparent sealed cover 1 was polymethyl methacrylate.

[0058] Based on mass parts, after testing at an ambient temperature of 20℃ for 10 hours, the measured average output voltage was 1.2V, the total freshwater production was 6.3 parts, and the sodium ion content in the freshwater was [missing information]. + Mg 2+ Ca 2+ and K + The concentrations were 0.9 mg / L, 1.5 mg / L, 5.6 mg / L and 0.8 mg / L, respectively, all of which were lower than the WHO-specified values, thus realizing the integration of seawater desalination and evaporation power generation.

[0059] Application Example 2

[0060] When using the leather-based evaporation power generation-seawater desalination device in Example 2 to perform evaporation power generation and seawater desalination, the following steps are included:

[0061] By mass, 35 parts of sodium chloride were dissolved in 1000 parts of deionized water and stirred until completely dissolved to obtain simulated seawater. The leather-based evaporation power generation-seawater desalination device from Example 1 was placed in the center of the transparent sealed cover 1, and simulated seawater was added to the seawater containing tank 5 to realize the integrated application of "evaporation power generation-seawater desalination". The ambient temperature during use was 20°C and the relative humidity was 40%. The material of the transparent sealed cover 1 was polymethyl methacrylate.

[0062] Based on mass parts, after testing at an ambient temperature of 20℃ for 10 hours, the measured average output voltage was 0.7V, the total freshwater production was 3 parts, and the sodium ion content in the freshwater was [missing information]. + Mg 2+ Ca 2+ and K + The concentrations were 1.2 mg / L, 1.4 mg / L, 5.1 mg / L and 0.9 mg / L, respectively, all of which were lower than the WHO-specified values, thus realizing the integration of seawater desalination and evaporation power generation.

[0063] Application Example 3

[0064] When using the leather-based evaporation power generation-seawater desalination device in Example 3 to perform evaporation power generation and seawater desalination, the following steps are included:

[0065] By mass, 20 parts of sodium chloride were dissolved in 500 parts of deionized water and stirred until completely dissolved to obtain simulated seawater. The leather-based evaporation power generation-seawater desalination device from Example 1 was placed in the center of the transparent sealed cover 1, and simulated seawater was added to the seawater container tank 5 to realize the integrated application of "evaporation power generation-seawater desalination". The ambient temperature during use was 60°C and the relative humidity was 50%. The transparent sealed cover 1 was made of glass.

[0066] Based on mass parts, after testing at an ambient temperature of 60℃ for 10 hours, the measured average output voltage was 1V, the total freshwater production was 5.5 parts, and the sodium ion content in the freshwater was [missing information]. + Mg 2+ Ca 2+ and K + The concentrations were 1 mg / L, 1.6 mg / L, 6 mg / L and 0.8 mg / L, respectively, all of which were lower than the WHO-specified values, thus realizing the integration of seawater desalination and evaporation power generation.

[0067] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A method for preparing a leather-based evaporation power generation-seawater desalination device, characterized in that, Includes the following steps: S1: Mix the acid-soaked leather with water and alkali and rotate it. Then add vegetable tanning agent and rotate it again until it is thoroughly tanned. Finally, add acid, let it stand and dry to obtain tanned leather. S2: The tanned leather is rolled into a spruce-shaped cone with a pointed top and a round bottom, and an upper electrode (7) and a lower electrode (8) are installed at the top and bottom of the spruce-shaped cone respectively to obtain a leather-based evaporation power generation-seawater desalination device. The time for rotating the mixture of acid-soaked leather, water, and alkali is 0.5-1 hour, and the temperature during rotation is 20-25℃; the leather is cowhide, sheepskin, or pigskin; the alkali is Na2CO3 or NaHCO3; After the acid-soaked leather is mixed with water and alkali and rotated, the pH value of the leather is tested to be 4.2-4.8, and then vegetable tanning agents are added; the vegetable tanning agents are bayberry tannin, pomelo tannin, or rubber tannin. The tanning time is 1-3 hours and the temperature is 20-25℃. After adding acid, the pH value of the solution used to soak the leather is tested to be 3.8-4.2, and then it is allowed to stand at 20-25℃. The acid is formic acid, acetic acid or sulfuric acid.

2. The preparation method of a leather-based evaporation power generation-seawater desalination device according to claim 1, characterized in that, The ratio of the amount of the soaked leather, water, alkali, vegetable tanning agent and acid, by mass parts, is (100-200): (100-200): (2-4): (10-20): (1-2).

3. A leather-based evaporation power generation-seawater desalination device, characterized in that, It is prepared using the preparation method of a leather-based evaporation power generation-seawater desalination device as described in claim 1 or 2.

4. The leather-based evaporation power generation-seawater desalination device according to claim 3, characterized in that, The height of the spruce-shaped cone is 5-15cm, and the bottom radius of the spruce-shaped cone is 5-12cm; the materials of the upper electrode (7) and the lower electrode (8) are iron, copper, aluminum, gold, silver, titanium, platinum or carbon nanotubes; the height difference between the upper electrode (7) and the lower electrode (8) in the vertical direction is 3-10cm.

5. The application of the leather-based evaporation power generation-seawater desalination device as described in claim 3 or 4, characterized in that, The leather-based evaporation power generation-seawater desalination device includes the following steps during evaporation power generation and seawater desalination: Dissolve 20-35 parts of sodium chloride in 500-1000 parts of deionized water by mass, and stir until completely dissolved to obtain simulated seawater; first place the leather-based evaporation power generation-seawater desalination device in a transparent sealed cover (1), and then add 500-1000 parts of simulated seawater into the transparent sealed cover (1).

6. The application of the leather-based evaporation power generation-seawater desalination device according to claim 5, characterized in that, The transparent sealing cover (1) includes a base plate (2), several side plates (3) and a top plate (4); one end of the several side plates (3) is vertically arranged on the four sides of the base plate (2); the top plate (4) covers the other end of the several side plates (3); a seawater containing tank (5) is provided on the upper surface of the base plate (2); the leather-based evaporation power generation-seawater desalination device is placed in the seawater containing tank (5) containing simulated seawater; freshwater tanks (6) containing fresh water are fixedly arranged around the seawater containing tank (5).

7. The application of the leather-based evaporation power generation-seawater desalination device as described in claim 6, characterized in that, The temperature of the leather-based evaporation power generation-seawater desalination device during evaporation power generation and seawater desalination is 10-70℃, and the relative humidity is 20-70%; the longitudinal section of the top plate (4) is triangular, and the cross section is square; the material of the transparent sealing cover (1) is glass, polymethyl methacrylate, polyethylene or polypropylene; the length of the long side and the width side of the bottom plate (2) are both 30cm; the height of the side plate (3) is 40cm; the length × width × height of the seawater containing tank (5) is 30cm × 5cm × 10cm.

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