Hydrogen production device and method for electrolysis of water in a microcavity based on vibrational coupling effect

Abstract

The application discloses a kind of based on vibration coupling effect microcavity electrolytic water hydrogen production device and method thereof, based on vibration coupling effect microcavity electrolytic water hydrogen production device including optical glass plate, metal film and plastic film, the plastic film has electrolytic hole on two surfaces of the plastic film, two surfaces of the plastic film are sequentially stacked and connected with the metal film and the optical glass plate respectively, the metal film is sealed to form hydrolysis microcavity with the electrolytic hole, and the metal film and the optical glass plate on at least one side of the plastic film are penetrated with first electrode channel and second electrode channel.The application based on vibration coupling effect microcavity electrolytic water hydrogen production device water molecule is resonated with optical hydrolysis microcavity to improve the yield of hydrogen.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen energy, optical film and infrared spectrum, in particular to a hydrogen production technology, and belongs to the technical field of clean energy and renewable energy, and particularly relates to a microcavity water electrolysis hydrogen production device based on vibration coupling effect and a method thereof. BACKGROUND

[0002] At present, the water electrolysis hydrogen production technology has been initially industrialized. The energy conversion efficiency of the traditional water electrolysis hydrogen production technology has long been hovering between 50% and 70%, and the low energy conversion efficiency is the main reason for the high cost of water electrolysis. The traditional water electrolysis hydrogen production technology has problems such as high cost and difficulty in further improving energy conversion efficiency. SUMMARY

[0003] Therefore, in view of the problems of the traditional water electrolysis hydrogen production technology such as high cost and difficulty in further improving energy conversion efficiency, an embodiment of the present application provides a microcavity water electrolysis hydrogen production device based on vibration coupling effect. The microcavity water electrolysis hydrogen production device based on vibration coupling effect can greatly improve the efficiency of hydrogen production and reduce the preparation cost.

[0004] A microcavity water electrolysis hydrogen production device based on vibration coupling effect, comprising an optical glass plate, a metal film and a plastic film, the plastic film has an electrolysis hole penetrating through two surfaces of the plastic film, the two surfaces of the plastic film are sequentially connected with the metal film and the optical glass plate respectively, the metal film seals the electrolysis hole to form a water electrolysis microcavity, and the metal film and the optical glass plate on at least one side of the plastic film are both penetrated by a first electrode channel and a second electrode channel.

[0005] In some embodiments, the thickness d of the water electrolysis microcavity is calculated according to the following formula:

[0006]

[0007] FSR is the spectral distance between any two adjacent characteristic peaks in the infrared transmission spectrum at the electrolysis hole position measured by Fourier transform infrared spectroscopy.

[0008] In some embodiments, the reflectivity of the metal film is 90% to 96%.

[0009] In some embodiments, the metal film is a gold film or a silver film.

[0010] In some embodiments, the water electrolysis hydrogen production device based on the vibration coupling effect microcavity further comprises an insulating medium film, two surfaces of the plastic film are sequentially connected with the insulating medium film, the metal film and the optical glass plate respectively, and the insulating medium film seals the electrolysis hole to form the water hydrolysis microcavity.

[0011] In some embodiments, the insulating medium film is a silicon dioxide film.

[0012] In some embodiments, the insulating medium film is formed on the metal film by coating, electroplating or electroless plating.

[0013] In some embodiments, the plastic film is a Mylar film.

[0014] In some embodiments, the metal film is formed on the optical glass plate by coating, electroplating or electroless plating.

[0015] Another object of the present application is to provide a water electrolysis hydrogen production method based on the vibration coupling effect microcavity.

[0016] A water electrolysis hydrogen production method based on the vibration coupling effect microcavity uses a water electrolysis hydrogen production device based on the vibration coupling effect microcavity, and comprises the following steps:

[0017] (1) Water hydrolysis cavity regulation: regulating the water hydrolysis cavity of the water electrolysis hydrogen production device based on the vibration coupling effect microcavity, measuring the spectral distance between any two adjacent characteristic peaks in the infrared transmission spectrum at the electrolysis hole position by Fourier transform infrared spectroscopy, and obtaining the water hydrolysis microcavity thickness d,

[0018]

[0019] By regulating the water hydrolysis microcavity thickness, the microcavity resonance thickness under the resonance condition is obtained, and the hydrogen-oxygen bond vibration mode of water molecules and the microcavity optical resonance mode are resonantly coupled under the resonance condition.

[0020] (2) Electrolysis to produce hydrogen: injecting water into the water hydrolysis microcavity through the first electrode channel and the second electrode channel, inserting the first electrode and the second electrode into the first electrode channel and the second electrode channel respectively, applying a voltage between the first electrode and the second electrode, and electrolyzing water to produce hydrogen.

[0021] In some embodiments, the calculation method of the microcavity resonance thickness is as follows: the resonance thickness of the water hydrolysis microcavity and water molecules is obtained by the transfer matrix calculation method in physical optics, and under the resonance condition, the frequency ω m of the microcavity optical resonance mode overlaps with the frequency ω c of the stretching vibration mode of water molecules.

[0022] The hydrogen production device based on the vibration coupling effect microcavity electrolysis of water improves the hydrogen production rate through the resonance of water molecules and the optical hydrolysis microcavity, specifically, the vibration mode of the hydrogen-oxygen bond of the water molecule can be coupled with the vibration energy of the Fabry-Perot optical resonance mode supported by the optical hydrolysis microcavity, resulting in Rabi energy splitting of the vibration mode of the water molecule, forming two vibration polarization states; the energy coupling rate of the vibration mode of the water molecule and the optical mode of the hydrolysis microcavity is faster than other energy relaxation channels of the water molecule, so that the vibration state energy of the water molecule is maintained, and under the action of the applied electric field, the energy barrier of water decomposition is reduced, thereby improving the rate of water electrolysis hydrogen production.

[0023] The hydrogen production device based on the vibration coupling effect microcavity electrolysis of water can prevent the destructive effect of water molecules on the metal film and improve the service life of the metal film by arranging an insulating medium film on the metal film. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] In order to more completely understand the present application and its beneficial effects, the following will be described with reference to the drawings. In the following description, the same reference numerals represent the same parts.

[0026] Figure 1 The schematic diagram of the hydrogen production device based on the vibration coupling effect microcavity electrolysis of water according to an embodiment of the present application;

[0027] Figure 2 The energy level diagram of the vibration coupling between the water molecules and the hydrolysis microcavity in the hydrogen production device based on the vibration coupling effect microcavity electrolysis of water according to an embodiment of the present application.

[0028] Explanation of reference numerals

[0029] 10, hydrogen production device based on the vibration coupling effect microcavity electrolysis of water; 100, optical glass plate; 200, insulating medium film; 300, metal film; 400, plastic film; 410, hydrolysis microcavity; 21, first electrode; 22, second electrode. DETAILED DESCRIPTION

[0030] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described below in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in many different ways from what is described herein, and should not be construed as being limited to the embodiments set forth herein, but should be understood to include all possible embodiments.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0032] In addition, the terms "first", "second", "third" and the like are used only for descriptive purposes, and should not be construed as indicating or implying relative importance or implying a specified number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0033] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, when a member is referred to as being "coupled" or "connected" to another member, it can be directly coupled or connected to the other member or intervening members can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0036] In the description of the present application, if a plurality of meanings is one or more, a plurality of meanings is two or more, greater than, less than, exceeds, etc. is understood as not including the number, above, below, within, etc. is understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0038] Embodiments of the present application provide a microcavity water electrolysis hydrogen production device based on vibration coupling effect, to solve the problems of high cost and difficult to continue to improve energy conversion efficiency in traditional water electrolysis hydrogen production technology. The following will be described with reference to the accompanying drawings.

[0039] Embodiments of the present application provide a microcavity water electrolysis hydrogen production device based on vibration coupling effect, to solve the problems of high cost and difficult to continue to improve energy conversion efficiency in traditional water electrolysis hydrogen production technology. The following will be described with reference to the accompanying drawings. Figure 1 As shown in the figure, Figure 1 The structure of the microcavity water electrolysis hydrogen production device based on vibration coupling effect provided by the embodiments of the present application is shown in the figure. The microcavity water electrolysis hydrogen production device based on vibration coupling effect of the present application can be used for water electrolysis hydrogen production.

[0040] In order to more clearly illustrate the structure of the microcavity water electrolysis hydrogen production device based on vibration coupling effect, the microcavity water electrolysis hydrogen production device based on vibration coupling effect will be introduced in the following with reference to the accompanying drawings.

[0041] As shown in the figure, Figure 1 As shown in the figure, Figure 1 The structure of the microcavity water electrolysis hydrogen production device based on vibration coupling effect provided by the embodiments of the present application is shown in the figure. The microcavity water electrolysis hydrogen production device based on vibration coupling effect of the present application can be used for water electrolysis hydrogen production.

[0042] The plastic film has electrolysis holes penetrating through two surfaces of the plastic film. The two surfaces of the plastic film are sequentially connected with the metal film and the optical glass plate respectively. The metal film seals the electrolysis holes to form a hydrolysis microcavity. The metal film and the optical glass plate on at least one side of the plastic film are both penetrated by a first electrode channel and a second electrode channel. That is, the first electrode channel and the second electrode channel simultaneously penetrate the metal film and the optical glass plate on one side, so that water outside the optical glass plate can enter the hydrolysis microcavity through the first electrode channel and the second electrode channel.

[0043] In some embodiments, the thickness d of the hydrolysis microcavity is calculated according to the following formula:

[0044]

[0045] FSR is the spectral distance between any two adjacent characteristic peaks in the infrared transmission spectrum at the position of the electrolysis hole, measured by Fourier transform infrared spectroscopy.

[0046] The thickness of the plastic film is a key parameter of the microcavity, that is, the thickness of the plastic film is the thickness d of the hydrolysis microcavity.

[0047] In some embodiments, the reflectivity of the metal film is 90% to 96%. The two parallel metal films have high infrared reflectivity, so that the Fabry-Perot optical resonance mode can be formed in the hydrolysis microcavity.

[0048] In some embodiments, the metal film is a gold film or a silver film.

[0049] In some embodiments, the thickness of the metal film is 10-20 nm.

[0050] In some embodiments, the water electrolysis hydrogen production device based on the vibration coupling effect microcavity further comprises an insulating medium film. The two surfaces of the plastic film are sequentially connected with the insulating medium film, the metal film and the optical glass plate respectively. The insulating medium film seals the electrolysis hole to form the water splitting microcavity. The first electrode channel and the second electrode channel are formed through the insulating medium film, the metal film and the optical glass plate on at least one side of the plastic film. That is, the first electrode channel and the second electrode channel are formed through the insulating medium film, the metal film and the optical glass plate on one side, so that water outside the optical glass plate can enter the water splitting microcavity through the first electrode channel and the second electrode channel. The water electrolysis hydrogen production device based on the vibration coupling effect microcavity can prevent the destructive effect of water molecules on the metal film by arranging the insulating medium film on the metal film, thereby prolonging the service life of the metal film.

[0051] In some embodiments, the insulating medium film is a silicon dioxide film.

[0052] In some embodiments, the thickness of the insulating medium film is 80-120 nm.

[0053] In some embodiments, the insulating medium film is formed on the metal film by coating, electroplating or electroless plating.

[0054] In some embodiments, the plastic film is a Mylar film.

[0055] In some embodiments, the metal film is formed on the optical glass plate by coating, electroplating or electroless plating.

[0056] In some embodiments, the infrared optical glass on both sides of the plastic film can be fixed by screws or bolts. It is understood that in other embodiments, the infrared optical glass on both sides of the plastic film can also be fixed by adhesion.

[0057] The above infrared optical glass should be flat to the optical level. After forming the insulating medium film and the metal film on the infrared optical glass sheet, the flatness of the surface of the infrared optical glass should be maintained to realize the formation of the water splitting microcavity optical resonance mode.

[0058] Another object of the present application is to provide a water electrolysis hydrogen production method based on the vibration coupling effect microcavity.

[0059] A water electrolysis hydrogen production method based on the vibration coupling effect microcavity uses a water electrolysis hydrogen production device based on the vibration coupling effect microcavity, comprising the following steps:

[0060] (1) Hydrolysis cavity regulation: The hydrolysis cavity of the microcavity water electrolysis device based on the vibration coupling effect is regulated, the spectral interval between any two adjacent characteristic peaks in the infrared transmission spectrum at the electrolysis hole position is measured by Fourier transform infrared spectroscopy technology, the hydrolysis microcavity thickness d is obtained,

[0061]

[0062] By regulating the hydrolysis microcavity thickness, the microcavity resonance thickness under resonance condition is obtained, and under resonance condition, the hydrogen-oxygen bond vibration mode of water molecules and the microcavity optical resonance mode are resonantly coupled (see Figure 2 );

[0063] (2) Electrolytic hydrogen production: water is injected into the hydrolysis microcavity through the first electrode channel and the second electrode channel, the first electrode and the second electrode are inserted into the first electrode channel and the second electrode channel respectively, and a voltage is applied between the first electrode and the second electrode to electrolyze water to produce hydrogen.

[0064] In some embodiments, the calculation method of the microcavity resonance thickness is: the resonance thickness of the hydrolysis microcavity and the water molecules is obtained by the transfer matrix calculation method in physical optics, and under resonance condition, the frequency ω m of the microcavity optical resonance mode overlaps with the frequency ω c of the stretching vibration mode of the water molecules.

[0065] The transfer matrix calculation method is: in the transmission process of light in a planar layered structure, there is a forward propagating eigenmode and a backward propagating eigenmode, and the change of the relative intensity of the forward propagating eigenmode and the backward propagating eigenmode when reflecting and transmitting at the surface of the layered material can be related by a 2-order dynamic matrix; the change of the relative intensity of the forward propagating eigenmode and the backward propagating eigenmode when light passes through a certain layer of material can be related by a 2-order propagation matrix; the transmittance and reflectance of light through the entire multi-layer structure material can be related by the product of these dynamic matrices and propagation matrices; the elements in these matrices are calculated by Fresnel formula. The transmittance of the hydrolysis microcavity can be obtained by the transfer matrix method, and the transmittance of the hydrolysis microcavity obtained by this calculation method has a series of peak values in the frequency spectrum, which correspond to the microcavity optical resonance mode of the hydrolysis microcavity (see Figure 2 ). By regulating the hydrolysis microcavity thickness d, the frequency of the optical resonance mode supported by the hydrolysis microcavity under certain thickness condition can overlap with the frequency of the stretching vibration mode of the hydrogen-oxygen bond of the water molecules (see Figure 2 ), that is, the resonance condition is met.

[0066] Example 1

[0067] The embodiment provides a method for hydrogen production by water electrolysis based on a vibration coupling effect microcavity, which uses a device for hydrogen production by water electrolysis based on a vibration coupling effect microcavity.

[0068] The device for hydrogen production by water electrolysis based on a vibration coupling effect microcavity comprises an optical glass plate, an insulating medium film, a metal film and a plastic film. The optical glass plate is made of calcium fluoride infrared optical glass.

[0069] The metal film is formed on the optical glass plate by coating, electroplating or chemical plating. The metal film is a gold film with a thickness of 10 nm prepared by electron beam evaporation. The insulating medium film is formed on the metal film by coating, electroplating or chemical plating. The insulating medium film is a silicon dioxide film with a thickness of 100 μm prepared by magnetron sputtering. The reflectivity of the metal film is 90%. The metal film is a gold film. The thickness of the metal film is 20 nm. The insulating medium film is a silicon dioxide film. The thickness of the insulating medium film is 100 nm. The plastic film is a Mylar film. The plastic film is a Mylar polyester film with a thickness of about 12 μm.

[0070] The plastic film has an electrolysis hole penetrating through two surfaces of the plastic film. The two surfaces of the plastic film are sequentially connected with the insulating medium film, the metal film and the optical glass plate. The insulating medium film seals the electrolysis hole to form a hydrolysis microcavity. The metal film on one side of the plastic film and the optical glass plate are penetrated with a first electrode channel and a second electrode channel.

[0071] The thickness d of the hydrolysis microcavity is calculated according to the following formula:

[0072]

[0073] FSR is the spectral distance between any two adjacent characteristic peaks in the infrared transmission spectrum at the position of the electrolysis hole measured by Fourier transform infrared spectroscopy. When the thickness d of the microcavity is adjusted to 12.01 μm, the frequency of the microcavity optical resonance mode can overlap with the frequency of the stretching vibration mode of water molecules, i.e., the resonance condition is achieved.

[0074] A method for hydrogen production by water electrolysis based on a vibration coupling effect microcavity comprises the following steps:

[0075] Step (1) Hydrolysis cavity regulation: The device for hydrogen production by water electrolysis based on a vibration coupling effect microcavity is subjected to hydrolysis cavity regulation. The spectral distance between any two adjacent characteristic peaks in the infrared transmission spectrum at the position of the electrolysis hole is measured by Fourier transform infrared spectroscopy to obtain the thickness d of the hydrolysis microcavity.

[0076]

[0077] By adjusting the thickness of the hydrolysis microcavity, a microcavity resonant thickness d of 12.01 μm was obtained under resonant conditions. Under these conditions, the hydrogen-oxygen bond vibration mode of water molecules resonates with the optical resonant mode of the microcavity (see [link to relevant documentation]). Figure 2 (As shown); the calculation method for the microcavity resonant thickness is as follows: the resonant thickness of the hydrolysis microcavity and water molecules is obtained through the transfer matrix calculation method in physical optics. Under resonance conditions, the frequency ω of the microcavity optical resonant mode is... m The frequency ω of the stretching vibration mode of water molecules c overlapping.

[0078] Step (2) Electrolysis to produce hydrogen: Water is injected into the hydrolysis microcavity through the first electrode channel and the second electrode channel. The first electrode and the second electrode are inserted into the first electrode channel and the second electrode channel respectively. A voltage is applied between the first electrode and the second electrode to produce hydrogen by electrolysis of water.

[0079] Experimental tests revealed that under these resonance conditions, using Figure 1 When the device performs water electrolysis, the electrolysis current can be up to 10 times stronger than the electrolysis current outside the microcavity.

[0080] In summary, the aforementioned microcavity water electrolysis hydrogen production device based on vibrational coupling effect enhances hydrogen yield through the resonance between water molecules and the optical water electrolysis microcavity. Specifically, the vibrational energy coupling between the hydrogen-oxygen bond vibrational mode of water molecules and the Fabry-Perot optical resonance mode supported by the optical water electrolysis microcavity results in Rabi energy splitting of the water molecule vibrational mode, forming two vibrational polarization states. The energy coupling rate between the water molecule vibrational mode and the optical mode of the water electrolysis microcavity is faster than that of other energy relaxation channels of water molecules, thus maintaining the vibrational energy of water molecules. Under the action of an external electric field, the energy barrier for water decomposition is reduced, thereby increasing the rate of hydrogen production from water electrolysis.

[0081] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0082] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0083] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A device for hydrogen production by electrolysis of water based on the effect of vibrational coupling in a microcavity, characterized in that it comprises: The application relates to a water electrolysis microcavity based on a vibration coupling effect, which comprises an optical glass plate, a metal film and a plastic film, the plastic film being provided with electrolytic holes penetrating through two surfaces of the plastic film, the two surfaces of the plastic film being sequentially connected with the metal film and the optical glass plate respectively, the metal film sealing the electrolytic holes to form a hydrolysis microcavity, and the thickness d of the hydrolysis microcavity being calculated according to the following formula: d=2n / (2pi) (1 / lambda1-1 / lambda2), wherein n represents the refractive index of the optical glass plate, lambda1 represents the wavelength of the incident light, and lambda2 represents the wavelength of the transmitted light. FSR is the spectral distance between any two adjacent characteristic peaks in the infrared transmission spectrum at the electrolytic hole position measured by Fourier transform infrared spectroscopy technology, the microcavity resonance thickness under resonance condition is obtained by adjusting the hydrolysis microcavity thickness, under resonance condition, the hydrogen bond vibration mode of water molecules and the optical resonance mode of microcavity are resonantly coupled, the calculation method of the microcavity resonance thickness is: the resonance thickness of the hydrolysis microcavity and water molecules is obtained by the transfer matrix calculation method in physical optics, under resonance condition, the frequency ω m of the microcavity optical resonance mode overlaps with the frequency ω c of the stretching vibration mode of water molecules, the first electrode channel and the second electrode channel are formed through the metal film on at least one side of the plastic film and the optical glass plate. 2.The device for hydrogen production by water electrolysis based on the effect of vibrational coupling of microcavities according to claim 1, characterized in that, The reflectivity of the metal film is 90%-96%. 3.The device for hydrogen production by water electrolysis based on the effect of vibrational coupling according to any one of claims 1-2, characterized in that, The metal film is a gold film or a silver film.

4. The device for hydrogen production by water electrolysis based on the effect of vibrational coupling according to any one of claims 1-2, characterized in that, The application further relates to an insulating medium film, the two surfaces of the plastic film being sequentially connected with the insulating medium film, the metal film and the optical glass plate respectively, and the insulating medium film sealing the electrolytic holes to form the hydrolysis microcavity.

5. The device for hydrogen production by water electrolysis based on the effect of vibrational coupling of microcavities according to claim 4, characterized in that, The insulating medium film is a silicon dioxide film.

6. The device for hydrogen production by water electrolysis based on the effect of vibrational coupling of microcavities according to claim 4, characterized in that, The insulating medium film is formed on the metal film by coating, electroplating or chemical plating.

7. The device for hydrogen production by water electrolysis based on the effect of vibrational coupling of microcavities according to any one of claims 1-2, 5-6, characterized in that, The plastic film is a Mylar film.

8. The device for hydrogen production by water electrolysis based on the effect of vibrational coupling according to any one of claims 1-2, 5-6, characterized in that, The metal film is formed on the optical glass plate by coating, electroplating or chemical plating.

9. A method for hydrogen production by electrolysis of water in a microcavity based on the vibrational coupling effect, characterized in that, The application further relates to a water electrolysis microcavity based on a vibration coupling effect, which comprises the following steps: (1) Hydrolysis cavity regulation: the water electrolysis microcavity based on the vibration coupling effect is regulated, the spectral interval between any two adjacent characteristic peaks in the infrared transmission spectrum at the electrolytic hole position is measured by a Fourier transform infrared spectroscopy technology, and the thickness d of the hydrolysis microcavity is obtained, ； The thickness of the microcavity under the resonance condition is obtained by regulating the thickness of the hydrolysis microcavity, and the hydrogen-oxygen bond vibration mode of the water molecule and the optical resonance mode of the microcavity are resonantly coupled under the resonance condition; (2) Electrolysis for hydrogen production: water is injected into the hydrolysis microcavity through the first electrode channel and the second electrode channel, the first electrode and the second electrode are respectively inserted into the first electrode channel and the second electrode channel, a voltage is applied between the first electrode and the second electrode, and water is electrolyzed to produce hydrogen.

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