Atmospheric water collection coupling water electrolysis hydrogen production system

Abstract

An atmosphere water collection coupling water electrolysis hydrogen production system comprises an electro-catalysis hydrogen production subsystem, an atmosphere water collection subsystem and an electro-catalysis oxygen production subsystem, and the atmosphere water collection subsystem is located between the electro-catalysis hydrogen production subsystem and the electro-catalysis oxygen production subsystem; a moisture absorption material is placed in the atmosphere water collection subsystem, and one side of the moisture absorption material is in contact with a cathode catalyst placed in the electro-catalysis hydrogen production subsystem to generate an electro-catalysis hydrogen production reaction; the other side of the moisture absorption material is in contact with an anode catalyst placed in the electro-catalysis oxygen production subsystem to generate an electro-catalysis oxygen production reaction; the cathode catalyst and the anode catalyst are respectively connected with two electrodes of the energy input subsystem through wires, and under the driving of the energy input subsystem, an atmospheric water electro-catalytic decomposition reaction is carried out; the atmosphere water collection technology is coupled with electro-catalytic water decomposition, atmosphere water is decomposed to produce hydrogen while atmosphere water collection is achieved, the utilization rate of atmosphere water and the efficiency of electro-catalytic decomposition of atmosphere water to produce hydrogen are improved, and the in-situ hydrogen production device has the advantages of being environmentally friendly, capable of saving energy, sustainable and the like and is an ideal in-situ hydrogen production mode.

Description

Technical Field

[0001] The invention belongs to the technical field of electrocatalytic decomposition of atmospheric water, and in particular relates to an atmospheric water collection coupled with electrolytic water hydrogen production system. Background Art

[0002] As the demand for water resources increases, traditional water resource development faces severe challenges, and making full use of water resources in the atmosphere has become a research hotspot. The atmosphere contains 130 trillion liters of water. Adsorption-based atmospheric water harvesting technology is not restricted by geographical location and is a key technology to solve water shortages. However, the way to couple atmospheric water harvesting technology with energy conversion remains to be explored.

[0003] Hydrogen energy is the most promising clean energy among many renewable energy technologies. It has the advantages of high energy density, cleanliness and no pollution. Water electrolysis to produce hydrogen is an ideal energy conversion method, which decomposes water to produce hydrogen in a zero-carbon emission process. However, in traditional water electrolysis hydrogen production systems, liquid water will be consumed while releasing hydrogen, and liquid water needs to be replenished regularly. At the same time, the differences in the distribution of water resources limit the development of water electrolysis. Seawater resources are abundant but the cost of electrolysis is high. The water molecules captured by atmospheric water collection are used as reactants and converted into hydrogen in the atmospheric water decomposition system, while achieving rapid water collection and efficient water decomposition to produce hydrogen.

[0004] At present, the atmospheric water splitting system is composed of hygroscopic materials and water splitting modules. The hygroscopic materials are mainly metal hydrogels and liquid hygroscopic substances. The hydrogel has limited adsorption capacity for water vapor, and the adsorption efficiency drops significantly after reaching saturation. The liquid absorbent has a strong water vapor absorption capacity, but most of them are corrosive. The water splitting module is mainly photocatalytic and electrocatalytic. Among them, electrocatalytic energy conversion efficiency is higher, but the research is concentrated in the acidic system, which is easy to corrode the electrode material and the reaction device. There are few studies on atmospheric water collection coupled with water electrolysis in alkaline systems. Summary of the invention

[0005] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide an atmospheric water collection coupled water electrolysis hydrogen production system, which effectively couples the electrocatalytic hydrogen production subsystem, the atmospheric water collection subsystem, the electrocatalytic oxygen production subsystem and the energy input subsystem, and uses atmospheric water as the source of hydrogen production by water electrolysis, thereby realizing the in-situ decomposition of atmospheric water for hydrogen production; the present invention couples atmospheric water collection and energy conversion technology, thereby improving the utilization rate of atmospheric water and the efficiency of hydrogen production by electrocatalytic decomposition of atmospheric water.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] An atmospheric water collection coupled with water electrolysis hydrogen production system comprises an electrocatalytic hydrogen production subsystem 1, an atmospheric water collection subsystem 2 and an electrocatalytic oxygen production subsystem 3, wherein the atmospheric water collection subsystem 2 is located between the electrocatalytic hydrogen production subsystem 1 and the electrocatalytic oxygen production subsystem 3, and the electrocatalytic hydrogen production subsystem 1 is connected to the air inlet of the hydrogen collection subsystem 5 via a hydrogen collection port 106; a hygroscopic material 202 is placed in the atmospheric water collection subsystem 2, one side of the hygroscopic material 202 contacts with a cathode catalyst 105 placed in the electrocatalytic hydrogen production subsystem 1, and an electrocatalytic hydrogen production reaction occurs; the other side of the hygroscopic material 202 contacts with an anode catalyst 301 placed in the electrocatalytic oxygen production subsystem 3, and an electrocatalytic oxygen production reaction occurs; the cathode catalyst 105 and the anode catalyst 301 are respectively connected to two electrodes of an energy input subsystem 4 via wires, and under the drive of the energy input subsystem 4, an electrocatalytic atmospheric water decomposition reaction is performed.

[0008] The electrocatalytic hydrogen production subsystem 1 includes, from the outside to the inside, a top plate 101, a first cathode gasket 102, a cathode collector plate 103, and a second cathode gasket 104; a hydrogen collection port 106 is provided on the outside of the top plate 101, and the hydrogen collection port 106 is connected to the hydrogen collection subsystem 5; a cathode catalyst 105 is placed in a hole in the middle of the second cathode gasket 104; a hole in the middle of the first cathode gasket 102 allows gas to overflow; the cathode collector plate 103 is located between the first cathode gasket 102 and the second cathode gasket 104; and the lead of the cathode catalyst 105 is connected to the positive electrode of the energy input subsystem 4 through the cathode collector plate 103.

[0009] The top plate 101 is fixedly connected to the first cathode gasket 102 , the cathode current collector plate 103 , and the second cathode gasket 104 to form a closed space, thereby ensuring that the hydrogen generated by the electrocatalytic hydrogen production subsystem 1 will not leak.

[0010] The electrocatalytic oxygen production subsystem 3 includes, from the inside to the outside, a first anode gasket 302, an anode collector plate 303, a second anode gasket 304 and a bottom plate 305. The first anode gasket 302 has a hole in the middle for placing an anode catalyst 301. The wire of the anode catalyst 301 is connected to the negative electrode of the energy input subsystem 4 through the anode collector plate 303. The second anode gasket 304 has a hole in the middle for gas to overflow. The bottom plate 305 has a first through hole 306.

[0011] The atmospheric water collection subsystem 2 comprises a first connecting plate 201, a hygroscopic material 202 and a second connecting plate 203. A second through hole 204 is provided between the first connecting plate 201 and the second connecting plate 203. The hygroscopic material 202 is placed in the second through hole 204, so that one side of the hygroscopic material 202 contacts the cathode catalyst 105, an electrocatalytic hydrogen production reaction occurs, and the generated hydrogen is stored in the hydrogen collection subsystem 5 through the hydrogen collection port 106; the other side of the hygroscopic material 202 contacts the anode catalyst 301, an electrocatalytic oxygen production reaction occurs, and the generated oxygen is released into the air from the first through hole 306 on the bottom plate 305.

[0012] The materials of the top plate 101, cathode collector plate 103, first connecting plate 201, second connecting plate 203, anode collector plate 303 and bottom plate 305 in the electrocatalytic hydrogen production subsystem 1, atmospheric water collection subsystem 2 and electrocatalytic oxygen production subsystem 3 include metal, glass, or acrylic plate.

[0013] The water-absorbing material includes a hygroscopic hydrogel or a hygroscopic aerogel.

[0014] The cathode catalyst 105 is made of hydrogen evolution electrocatalyst material, and the anode catalyst 301 is made of oxygen evolution electrocatalyst material.

[0015] The energy input subsystem 4 uses a battery, and the battery is an electrochemical cell or a solar panel.

[0016] The electrocatalytic hydrogen production subsystem 1 is connected to the air inlet of the hydrogen collection subsystem 5 via the hydrogen collection port 106 to store the produced hydrogen.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention uses atmospheric water as the source of hydrogen production by electrolysis of water, and produces hydrogen by in-situ electrolysis of atmospheric water. Compared with atmospheric water collection technology, it can realize hydrogen production by decomposing atmospheric water under energy conversion technology, and has the effect of efficiently utilizing atmospheric water resources.

[0019] 2. The hydrogen collection port of the present invention forms a closed space in the electrocatalytic hydrogen production subsystem, which can collect hydrogen generated by decomposition of atmospheric water level, thus overcoming the defect that hydrogen is difficult to collect. The collected hydrogen can be further utilized as fuel.

[0020] 3. The present invention adopts block hygroscopic materials as electrolytes for water electrolysis reaction, which can realize atmospheric water collection and decomposition to produce hydrogen, thus realizing continuous operation of the device.

[0021] 4. The present invention combines atmospheric water collection with electrocatalytic water decomposition. The electrocatalysts used at the cathode and anode are universal, and the electrocatalytic water decomposition has a high energy conversion efficiency.

[0022] In summary, the present invention effectively couples the electrocatalytic hydrogen production subsystem, the atmospheric water collection subsystem, the electrocatalytic oxygen production subsystem and the energy input subsystem, uses atmospheric water as the source of hydrogen production by electrolysis of water, and realizes in-situ decomposition and hydrogen production by atmospheric water collection. The system improves the utilization rate of atmospheric water, couples atmospheric water collection and energy conversion technology, has the advantages of being green, energy-saving, and sustainable, and is an ideal in-situ hydrogen production method. The system has a wide range of application scenarios and can be used in the full humidity range. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the electrocatalytic hydrogen production subsystem 1 of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the atmospheric water collection subsystem 2 of the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of the electrocatalytic oxygen production subsystem 3 of the present invention.

[0027] Figure 5 To analyze the gas composition by gas chromatography before and after the hydrogen production catalytic reaction, Figure 5 (a) Before the reaction, 150 μL of gas contained only oxygen and nitrogen. Figure 5 (b) After 30 minutes of reaction, 150 μL of gas contains hydrogen, oxygen and nitrogen, and the total amount of H2 generated is 74 μmol.

[0028] Figure 6 (a) is the amount of hydrogen generated by the reaction (electrode reaction area is 1cm -2 ); Figure 6 (b) is 10 mA cm -2 The chronopotentiometry curve below.

[0029] Figure 7 (a) is the experimental diagram of Example 2, Figure 7 (b) is the bubble generation diagram on the catalyst surface.

[0030] In the figure, 1-electrocatalytic hydrogen production subsystem; 2-atmospheric water collection subsystem; 3-electrocatalytic oxygen production subsystem; 4-battery; 5-hydrogen collection bottle; 101-top plate; 102-cathode first gasket; 103-cathode collector plate; 104-cathode second gasket; 105-cathode catalyst; 106-hydrogen collection port; 201-first connecting plate; 202-hygroscopic material; 203-second connecting plate; 204-second through hole; 301-anode catalyst; 302-anode first gasket; 303-anode collector plate; 304-anode second gasket; 305-bottom plate; 306-first through hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. The described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should belong to the scope of protection of the present invention.

[0032] like Figure 1 , Figure 2 As shown, an atmospheric water collection coupled water electrolysis hydrogen production system comprises an electrocatalytic hydrogen production subsystem 1, an atmospheric water collection subsystem 2 and an electrocatalytic oxygen production subsystem 3, wherein the atmospheric water collection subsystem 2 is located between the electrocatalytic hydrogen production subsystem 1 and the electrocatalytic oxygen production subsystem 3, and the electrocatalytic hydrogen production subsystem 1 is connected to the air inlet of the hydrogen collection subsystem 5 via a hydrogen collection port 106; a hygroscopic material 202 is placed in the atmospheric water collection subsystem 2, one side of the hygroscopic material 202 contacts with a cathode catalyst 105 placed in the electrocatalytic hydrogen production subsystem 1, and an electrocatalytic hydrogen production reaction occurs; the other side of the hygroscopic material 202 contacts with an anode catalyst 301 placed in the electrocatalytic oxygen production subsystem 3, and an electrocatalytic oxygen production reaction occurs; the cathode catalyst 105 and the anode catalyst 301 are respectively connected to two electrodes of an energy input subsystem 4 via wires, and under the drive of the energy input subsystem 4, an electrocatalytic atmospheric water decomposition reaction is performed.

[0033] The electrocatalytic hydrogen production subsystem 1 includes, from the outside to the inside, a top plate 101, a first cathode gasket 102, a cathode collector plate 103, and a second cathode gasket 104; a hydrogen collection port 106 is provided on the outside of the top plate 101, and the hydrogen collection port 106 is connected to the hydrogen collection subsystem 5; a cathode catalyst 105 is placed in a hole in the middle of the second cathode gasket 104; a hole in the middle of the first cathode gasket 102 allows gas to overflow; the cathode collector plate 103 is located between the first cathode gasket 102 and the second cathode gasket 104; and the lead of the cathode catalyst 105 is connected to the positive electrode of the energy input subsystem 4 through the cathode collector plate 103.

[0034] The top plate 101 is fixedly connected to the first cathode gasket 102 , the cathode current collector plate 103 , and the second cathode gasket 104 to form a closed space, thereby ensuring that the hydrogen generated by the electrocatalytic hydrogen production subsystem 1 will not leak.

[0035] like Figure 4The electrocatalytic oxygen production subsystem 3 includes, from the inside to the outside, a first anode gasket 302, an anode collector plate 303, a second anode gasket 304 and a bottom plate 305. The first anode gasket 302 has a hole in the middle for placing an anode catalyst 301. The wire of the anode catalyst 301 is connected to the negative electrode of the energy input subsystem 4 through the anode collector plate 303. The second anode gasket 304 has a hole in the middle for gas to overflow. The bottom plate 305 has a first through hole 306.

[0036] like Figure 3 The atmospheric water collection subsystem 2 comprises a first connecting plate 201, a hygroscopic material 202 and a second connecting plate 203. A second through hole 204 is provided between the first connecting plate 201 and the second connecting plate 203. The hygroscopic material 202 is placed in the second through hole 204, so that one side of the hygroscopic material 202 contacts the cathode catalyst 105, and an electrocatalytic hydrogen production reaction occurs. The generated hydrogen is stored in the hydrogen collection subsystem 5 through the hydrogen collection port 106; the other side of the hygroscopic material 202 contacts the anode catalyst 301, and an electrocatalytic oxygen production reaction occurs. The generated oxygen is released into the air from the first through hole 306 on the bottom plate 305.

[0037] like Figure 2 The materials of the top plate 101, cathode collector plate 103, first connecting plate 201, second connecting plate 203, anode collector plate 303 and bottom plate 305 in the electro-catalytic hydrogen production subsystem 1, atmospheric water collection subsystem 2 and electro-catalytic oxygen production subsystem 3 include metal, glass, or acrylic plate.

[0038] The water-absorbing material includes a hygroscopic hydrogel or a hygroscopic aerogel.

[0039] The cathode catalyst 105 is made of hydrogen evolution electrocatalyst material, and the anode catalyst 301 is made of oxygen evolution electrocatalyst material.

[0040] The energy input subsystem 4 uses a battery, and the battery is an electrochemical cell or a solar panel.

[0041] The electrocatalytic hydrogen production subsystem 1 is connected to the air inlet of the hydrogen collection subsystem 5 via the hydrogen collection port 106 to store the produced hydrogen.

[0042] Example 1

[0043] The water-absorbing material 202 prepared in advance is placed in the middle through hole of the first connecting plate 201 and the second connecting plate 203. The water molecules captured by the water-absorbing material will be converted into ionic electrolytes attached to the surface of the water-absorbing material.

[0044] The cathode electrocatalyst 105 prepared in advance is placed in the middle through hole of the second cathode gasket 104, and then the top plate 101, the first cathode gasket 102, the cathode collector plate 103, the second cathode gasket 104, the first connecting plate 201 and the second connecting plate 203 are fixed together with bolts, and the hydrogen collection port provided on the top plate 101 is connected to the hydrogen collection subsystem 5.

[0045] The anode electrocatalyst 301 prepared in advance is placed in the middle through hole of the first anode gasket 302, and then the first connecting plate 201, the second connecting plate 203, the first anode gasket 302, the anode collector plate 303, the second anode gasket 304 and the bottom plate 305 are fixed together with bolts.

[0046] The electrochemical workstation is used as a battery in the energy input subsystem 4, the cathode electrocatalyst 105 is connected to the counter electrode and the reference electrode wire, and the anode electrocatalyst 301 is connected to the working electrode. The electrochemical workstation is turned on, and a constant current of 10A is applied, and the hygroscopic material 202 and the contact surfaces of the cathode catalyst 105 and the anode electrocatalyst 301 undergo electrocatalytic hydrogen production reaction and electrocatalytic oxygen production reaction, respectively.

[0047] See also Figure 5 , gas chromatography was used to analyze the gas composition before and after the reaction. Figure 5 (a) Before the reaction, 150 μL of gas contained only oxygen and nitrogen. Figure 5 (b) After 30 minutes of reaction, 150 μL of gas contains hydrogen, oxygen and nitrogen, and the total amount of H2 generated is 74 μmol.

[0048] See also Figure 6 ,in, Figure 6 (a) is the amount of hydrogen produced by the reaction. After 2 hours of reaction, 0.25 mmol of hydrogen was produced. After 6 hours of continuous electrolysis, 0.4 mmol of H2 was produced. Figure 6 (b) It can be seen that the current density is maintained at 10 mA cm -2 The required voltage stabilized after 3 hours of reaction, and the stable voltage was only 1.94V.

[0049] Example 2

[0050] The water-absorbing material 202 prepared in advance is placed in the middle through hole of the first connecting plate 201 and the second connecting plate 203. The water molecules captured by the water-absorbing material will be converted into ionic electrolytes attached to the surface of the water-absorbing material.

[0051] The cathode electrocatalyst 105 prepared in advance is placed in the middle through hole of the second cathode gasket 104, and then the top plate 101, the first cathode gasket 102, the cathode collector plate 103, the second cathode gasket 104, the first connecting plate 201 and the second connecting plate 203 are fixed together with bolts, and the hydrogen collection port provided on the top plate 101 is connected to the hydrogen collection subsystem 5.

[0052] The anode electrocatalyst 301 prepared in advance is placed in the middle through hole of the first anode gasket 302, and then the first connecting plate 201, the second connecting plate 203, the first anode gasket 302, the anode collector plate 303, the second anode gasket 304 and the bottom plate 305 are fixed together with bolts.

[0053] The solar panel is used as a battery in the energy input subsystem 4, the cathode electrocatalyst 105 is connected to the negative electrode of the solar panel, and the anode electrocatalyst 301 is connected to the positive electrode of the solar panel. Turn on the 300W xenon light source, adjust the current to 10A, and the hygroscopic material 202 and the contact surface with the cathode catalyst 105 and the anode electrocatalyst 301 respectively undergo electrocatalytic hydrogen production reaction and electrocatalytic oxygen production reaction.

[0054] See also Figure 7 (a) is the experimental diagram of Example 2, Figure 7 (b) is the bubble generation diagram on the catalyst surface. 20mW·cm -2 Under a light intensity of , the solar panel will generate 10mA·cm -2 The photocurrent of atmospheric water decomposition hydrogen production device was electrolyzed at this current density, and gas was observed to be generated on the electrode surface, such as Figure 7 As shown in (b), it is proved that the atmospheric water decomposition hydrogen production device can be driven by solar energy.

[0055] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] There are many specific application paths of the present invention, and the above is only a preferred embodiment of the present invention. It should be pointed out that the above embodiments are only used to illustrate the present invention, and are not used to limit the scope of protection of the present invention. For those of ordinary skill in the art, without departing from the concept of the present invention, several variations and improvements can also be made, which all belong to the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the attached claims.

Claims

1. An atmospheric water collection coupled with water electrolysis hydrogen production system, comprising an electrocatalytic hydrogen production subsystem (1), an atmospheric water collection subsystem 2 (5) and an electrocatalytic oxygen production subsystem (3), wherein the atmospheric water collection subsystem (2) is located between the electrocatalytic hydrogen production subsystem (1) and the electrocatalytic oxygen production subsystem (3), and the electrocatalytic hydrogen production subsystem (1) is connected to the air inlet of the hydrogen collection subsystem (5) through a hydrogen collection port (106); characterized in that: A hygroscopic material (202) is placed in the atmospheric water collection subsystem (2), and one side of the hygroscopic material (202) contacts the cathode catalyst (105) placed in the electrocatalytic hydrogen production subsystem (1), and an electrocatalytic hydrogen production reaction occurs; the other side of the hygroscopic material (202) contacts the anode catalyst (301) placed in the electrocatalytic oxygen production subsystem (3), and an electrocatalytic oxygen production reaction occurs; the cathode catalyst (105) and the anode catalyst (301) are respectively connected to two electrodes of the energy input subsystem (4) through wires, and under the drive of the energy input subsystem (4), an electrocatalytic decomposition reaction of atmospheric water is carried out.

2. The atmospheric water collection coupled water electrolysis hydrogen production system according to claim 1, characterized in that: The electrocatalytic hydrogen production subsystem 1 comprises, from outside to inside, a top plate (101), a first cathode gasket (102), a cathode collector plate (103), and a second cathode gasket (104); a hydrogen collection port (106) is provided on the outside of the top plate (101), the hydrogen collection port (106) is connected to the hydrogen collection subsystem (5), a hole is opened in the middle of the second cathode gasket (104) to place a cathode catalyst (105), a hole is opened in the middle of the first cathode gasket (102) to allow gas to overflow, the cathode collector plate (103) is located between the first cathode gasket (102) and the second cathode gasket (104), and the lead of the cathode catalyst (105) is connected to the positive electrode of the energy input subsystem 4 through the cathode collector plate (103).

3. The atmospheric water collection coupled water electrolysis hydrogen production system according to claim 2, characterized in that: The top plate (101) is fixedly connected to the first cathode gasket (102), the cathode current collector plate (103), and the second cathode gasket (104) to form a closed space, thereby ensuring that the hydrogen generated by the electrocatalytic hydrogen production subsystem (1) will not leak.

4. The atmospheric water collection coupled water electrolysis hydrogen production system according to claim 1, characterized in that: The electrocatalytic oxygen production subsystem (3) comprises, from the inside to the outside, a first anode gasket (302), an anode collector plate (303), a second anode gasket (304) and a bottom plate (305); a hole is opened in the middle of the first anode gasket (302) to place an anode catalyst (301); a wire of the anode catalyst (301) is connected to the negative electrode of the energy input subsystem (4) through the anode collector plate (303); a hole is opened in the middle of the second anode gasket (304) to allow gas to overflow; and a first through hole (306) is opened in the bottom plate (305).

5. The atmospheric water collection coupled water electrolysis hydrogen production system according to claim 1, characterized in that: The atmospheric water collection subsystem (2) comprises a first connecting plate (201), a hygroscopic material (202) and a second connecting plate (203); a second through hole (204) is provided in the middle of the first connecting plate (201) and the second connecting plate (203); the hygroscopic material (202) is placed in the second through hole (204), so that one side of the hygroscopic material (202) contacts the cathode catalyst (105) to generate an electrocatalytic hydrogen production reaction, and the generated hydrogen is stored in the hydrogen collection subsystem (5) through the hydrogen collection port (106); the other side of the hygroscopic material (202) contacts the anode catalyst (301) to generate an electrocatalytic oxygen production reaction, and the generated oxygen is released into the air from the first through hole (306) on the bottom plate (305).

6. The atmospheric water collection coupled water electrolysis hydrogen production system according to claim 1, characterized in that: The materials of the top plate (101), cathode collector plate (103), first connecting plate (201), second connecting plate (203), anode collector plate (303) and bottom plate (305) in the electrocatalytic hydrogen production subsystem 1, atmospheric water collection subsystem (2) and electrocatalytic oxygen production subsystem (3) include metal, glass or acrylic plate.

7. The atmospheric water collection coupled water electrolysis hydrogen production system according to claim 1, characterized in that: The water-absorbing material includes a hygroscopic hydrogel or a hygroscopic aerogel.

8. The atmospheric water collection coupled water electrolysis hydrogen production system according to claim 1, characterized in that: The cathode catalyst 105 is made of hydrogen evolution electrocatalyst material, and the anode catalyst (301) is made of oxygen evolution electrocatalyst material.

9. The atmospheric water collection coupled water electrolysis hydrogen production system according to claim 1, characterized in that: The energy input subsystem (4) uses a battery, and the battery is an electrochemical cell or a solar panel.

10. The atmospheric water collection coupled water electrolysis hydrogen production system according to claim 1, characterized in that: The electrocatalytic hydrogen production subsystem 1 is connected to the gas inlet of the hydrogen collection subsystem (5) via the hydrogen collection port (106) to store the produced hydrogen.

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