Electrolysis process for hydrogen generation

Abstract

Electrolysis process for producing hydrogen comprising the following process steps: - Applying a voltage to at least one electrode (20; 320) which is at least partially immersed in water (5) or a water mixture in a container (10; 210; 310), - wherein during the electrolysis process the water (5) or the water mixture separates into its components hydrogen and oxygen, and oxygen gas (81) and hydrogen gas (86) are formed in the area of ​​the at least one electrode (20; 320), - Moving the electrode (20; 320) by a moving device (50; 150A, 150B), whereby the oxygen gases (81) and / or hydrogen gases (86) adhering to the at least one electrode (20; 320) are detached.

Description

[0001] The invention relates to an electrolysis process for producing hydrogen with the features of claim 1 and an electrolysis device for producing hydrogen according to the features of claim 12.

[0002] The use of electrolysis to produce hydrogen is an established process in the chemical industry. Typically, two electrodes—the positively charged anode and the negatively charged cathode—are placed in a container filled with water or a water mixture. These electrodes are separated by a membrane or separator to prevent the resulting gases from mixing. Electrolysis begins when a direct current voltage is applied. Positively charged hydrogen ions migrate to the cathode, where they accept electrons and are converted into molecular hydrogen, which is released as a gas. At the anode, water molecules oxidize, producing oxygen gas and free electrons.

[0003] A problem with such an electrolysis process is that gas bubbles form in the area of ​​the anode and cathode during electrolysis, which insulate the surfaces of the anode and cathode and thus increase the electrical resistance, impairing a continuous production of hydrogen and oxygen.

[0004] This problem is solved by an electrolysis process for producing hydrogen according to the features of claim 1 and an electrolysis device for producing hydrogen according to the features of claim 12.

[0005] Advantageous embodiments and further developments of the invention are specified in the dependent claims.

[0006] According to the invention, an electrolysis process for producing hydrogen comprises the following process steps: Applying a voltage to at least one electrode, which is at least partially immersed in water or a water mixture in a container, wherein during the electrolysis process the water or water mixture separates into its components hydrogen and oxygen, and oxygen gas and / or hydrogen gas are formed in the area of ​​the electrode. Moving the at least one electrode by a moving device, whereby the oxygen gas and / or hydrogen gas adhering to the electrode is / are detached.

[0007] The invention is based on the idea of ​​ensuring increased mass exchange at the electrode surface by moving at least one electrode within the container, in order to remove the gas bubbles generated during the electrolysis process more quickly and effectively from the electrode surface, thereby reducing the ohmic resistance of the liquid and increasing the efficiency of the electrolysis process.

[0008] Furthermore, the invention is based on the idea that the movement of the at least one electrode within the container accelerates the catalytic processes, thereby facilitating the breaking of the hydrogen bonds, which leads to a significant increase in the efficiency of the electrolysis process.

[0009] Vibrations within the meaning of this invention are periodic, continuously identical movements around an equilibrium position with the same frequency, primarily along two spatial directions.

[0010] Vibrations within the meaning of this invention are irregular, recurring movements in primarily three spatial directions, usually with several superimposed frequencies. Vibrations can arise from the superposition of several oscillations of different frequencies and amplitudes. A vibration can also propagate in two spatial directions.

[0011] Advantageously, the motion device sets the at least one electrode into oscillation or vibration during the electrolysis process, preferably into high-frequency oscillation or vibration. This oscillation or vibration improves the detachment of gas bubbles from the electrode surface. In particular, the uneven movement of the electrode when using high-frequency vibrations and the associated rapid changes in direction improve the detachment of the gas bubbles from the electrode surface.

[0012] Preferably, during the electrolysis process, the electrode undergoes a translational movement, where translational movement means that all points of the electrode are displaced parallel to each other while the electrode's orientation remains unchanged. A distinction is made between linear and curved translational movement. The advantage of translational electrode movements is that the mechanical coupling between the moving device and the electrode is extremely simple. For example, the mechanical coupling can be rigid via a rod, elastic via a spring or rubber element, or via a frictional contact.

[0013] Advantageously, the at least one electrode undergoes a linear translational movement during the electrolysis process. In a linear translational movement of the at least one electrode, the at least one electrode moves along an axis without changing its orientation with respect to that axis, so that a simple mechanical connection of the at least one electrode to the movement device is sufficient.

[0014] According to an advantageous step of the invention, during the electrolysis process, the at least one electrode is deflected from its rest position by 0.5 mm to 2.5 mm during linear translational movement. Within this deflection range, it has been shown that the formation of gas bubbles at the at least one electrode is effectively reduced or prevented. The aforementioned deflection range can also be smaller or larger.

[0015] According to a particularly preferred step of the invention, the linear translational movement of the at least one electrode during the electrolysis process has a frequency between 5 and 75 Hz, preferably between 15 and 60 Hz. A frequency lower or higher than the range specified above is also adjustable. The frequency of the linear translational movement must be considered in relation to the maximum displacement. A higher frequency leads to faster detachment of the gas bubbles. This prevents further growth of the gas bubbles on the at least one electrode and enables faster removal of the gas bubbles.

[0016] According to a particularly advantageous step of the invention, during the electrolysis process, the at least one electrode performs a curved translational movement. In a curved translational movement, the at least one electrode, or each point of the at least one electrode, moves along a curved path without changing its orientation relative to each other.

[0017] Preferably, the curved path is closed in itself, meaning that an imaginary endpoint is simultaneously an imaginary starting point.

[0018] Preferably, the at least one electrode follows a circular, elliptical, or eccentric path. For example, in a cuboid container with a bottom and side surfaces, the curved translational movement is directed parallel to the bottom or to one of the side surfaces. The curved translational movement occurs in two spatial directions, resulting in different forces, particularly centrifugal forces, acting on the gas bubbles and facilitating their detachment from the electrode surfaces.

[0019] Preferably, the curved translational motion along a curved path has a maximum diameter of 0.05 mm to 3 mm. The at least one electrode may also have a smaller or larger diameter. The diameter is defined as the minimum distance between two imaginary tangents of the curved path that are perpendicularly intersected by an imaginary line.

[0020] In a particularly advantageous process step, the curved translational motion of the electrode during the electrolysis process exhibits a frequency between 20 and 1000 Hz, preferably between 120 and 705 Hz. As previously described, the curved translational motion follows a curved path whose starting point is also its endpoint. The number of complete cycles per second is defined in this context as the frequency.

[0021] Advantageously, at least one electrode undergoes a rotational movement during the electrolysis process. In a rotational movement, all points of a body rotate around a common axis, thereby changing the orientation of the points relative to each other. For example, in a rotational movement, the at least one electrode rotates around its own longitudinal or transverse axis. This can reduce or prevent the formation of gas bubbles on the electrode surface.

[0022] Preferably, the at least one electrode performs a combination of translational and rotational motion during the electrolysis process. The translational motion can be linear or curved. In general, any motion can be described by a superposition of translational and rotational motion. By designing the electrolysis device to allow such a combination of motions, any conceivable motion can be performed.

[0023] In a further advantageous embodiment of the invention, the entire electrolysis unit, comprising the container with the water or water mixture arranged therein and the electrodes, is alternatively or additionally set into oscillation or vibration by the movement device. The accelerations generated in this way create a relative motion between the liquid and the adhering gas bubbles, thereby effectively detaching the gas bubbles from the electrode surfaces. The electrochemical reaction processes at the anode and cathode remain unaffected by this.

[0024] According to an advantageous process step, at least two electrodes, preferably at least one cathode and at least one anode, are arranged inside the container.

[0025] The at least two electrodes can perform the same movement simultaneously during the electrolysis process. This has the advantage that both electrodes can be mechanically arranged together on a single moving device, which saves costs.

[0026] According to the invention, a device for generating hydrogen comprises a container and at least one electrode, wherein the container is at least partially filled with water or a water mixture. The at least one electrode is at least partially immersed in the water or water mixture located within the container. The at least one electrode is movably arranged and mechanically connected to a moving device, wherein the electrode is moved by the moving device during the electrolysis process.

[0027] Advantageously, the motion device is designed as a pneumatic or electric motion device, wherein the motion device sets the at least one electrode in motion during the electrolysis process. Pneumatic and electric motion devices have the advantage of generally being cost-effective and durable.

[0028] Preferably, the pneumatic motion device is designed as a ball vibrator, roller vibrator, or piston vibrator. A ball vibrator has a ball, usually metallic, inside a circular housing, which is set in motion by means of compressed air. The vibration frequency can be changed by controlling the compressed air. Roller vibrators and piston vibrators are similar in design to ball vibrators. The advantages of ball vibrators, roller vibrators, and piston vibrators are that they require little maintenance and have a long service life despite their simple design.

[0029] According to a particularly advantageous embodiment of the invention, the electric motion device is designed as an external electric vibrator, an internal electric vibrator, and a vibrating bottle. This type of motion device comprises an electric motor and an eccentric unbalanced mass, usually a so-called vibrating head. The advantages of these motion devices are high efficiency, a long service life, and a simple design.

[0030] According to a preferred embodiment of the invention, at least two electrodes are arranged inside the container, between which a DC voltage is applied, such that one of the at least two electrodes is an anode and the other of the at least two electrodes is a cathode, wherein a membrane or a separator is arranged between the anode and the cathode, wherein the anode and the cathode are arranged to be movable and are mechanically connected to the movement device.

[0031] The anode is positively charged, while the cathode is negatively charged. The production of hydrogen in a device containing an anode and a cathode is well known, and reference is therefore made to the relevant technical literature.

[0032] An electrolysis device for producing hydrogen according to this invention can be based on the basic design of an alkaline electrolysis process, in which an alkaline solution, for example potassium hydroxide, is used as the electrolyte. Another possibility is proton exchange membrane electrolysis, in which a polymer-based membrane transports protons and generates hydrogen and oxygen gas at the anode and cathode, respectively. A further possibility is solid oxide electrolysis, in which a solid oxide is used as the electrolyte and the process is operated at high temperatures.

[0033] Advantageously, the electrolysis device has two moving mechanisms, one of which mechanically moves the cathode and the other moving mechanism the anode during the electrolysis process. This has the advantage that the cathode and the anode can be moved independently of each other.

[0034] Preferably, the membrane between the anode and the cathode is designed as a proton exchange membrane, preferably made of Nafion. An advantage of such an electrolysis device is that it exhibits high power density and fast response times.

[0035] Exemplary embodiments of the invention are explained below with reference to schematic figures. These show: Fig. 1 is a sectional view from the front of a first embodiment of the electrolysis device, Fig. 2 is a sectional view of a side view of the electrolysis device. Fig. 1 , Fig. 3 a sectional view from the front of a second embodiment of an electrolysis device, Fig. 4A a sectional view from above of a third embodiment of an electrolysis device, and Fig. 4B a sectional view from above of a fourth embodiment of an electrolysis device.

[0036] Identical or functionally equivalent parts or features are identified by the same reference numerals in the detailed description of the figures below. Likewise, not all identical or functionally equivalent parts or features in the figures are assigned a reference number.

[0037] Fig. 1 Figure 1 shows a cross-sectional view through a first embodiment of an electrolysis device 1 from a front view.

[0038] The electrolysis device 1 has a container 10 filled with water 5, two electrodes 20, a DC voltage source 40, a movement device 50, a separator 60 and two outlets 70A, 70B.

[0039] The container 10 is cuboid in shape, comprising a base 11, four side surfaces 13, and a lid 12. The lid 12 is mechanically connected to the base 11 via the four side surfaces 13. The container 10 may also have a lid 12. The container 10 may also have a cylindrical, cubic, spherical, or any other shape. The container 10 is preferably made of steel, particularly stainless steel. The container 10 may also be made of plastic or another material.

[0040] Water 5 is arranged within container 10, which has a container volume of [amount missing]. A water mixture, for example, sodium chloride, potassium hydroxide, or water with sulfuric acid, may also be arranged within container 10. The water 5 occupies a portion of the container volume. The water 5 arranged within container 10 may also completely fill the container volume.

[0041] Two electrodes 20 are movably arranged within the container 10. Alternatively, only one electrode 20 may be movably arranged within the container 10. More than two electrodes 20 may also be movably arranged within the container 10. The electrodes 20 are at least partially immersed in the water 5 contained within the container 10. The electrodes 20 may also be completely immersed in the water 5 contained within the container 10. The electrodes 20 are preferably made of a highly conductive and corrosion-resistant material, for example, platinum, iridium, stainless steel, or a nickel alloy.

[0042] The electrodes 20 point in the Fig. 1 The illustrated embodiment has the same shape. The electrodes 20 can also have different shapes. The electrodes 20 are cuboid in shape and have the form of a plate (see figure). Fig. 2 The cuboid shape is advantageous with regard to the complexity of arranging the electrode 20 within the container 10. The electrodes 20 can also have any other desired shape. For example, the electrodes 20 can be cylindrical or spherical.

[0043] The cuboid electrodes 20 have side surfaces 23 which are arranged parallel to the side surfaces 13 of the container 10. The cuboid electrodes 20 have a bottom part 21 and a top part 22, wherein the bottom part 21 is arranged parallel to the bottom 11 of the container 10 and the top part 22 is arranged parallel to the lid 12 of the container 10.

[0044] The cuboid electrode 20 has a longitudinal axis L (cf. Fig. 2 ), wherein the longitudinal axis L intersects two side surfaces 13 of the container 10 orthogonally. The cuboid electrode 20 has a transverse axis B that is orthogonal to the longitudinal axis L and intersects the two other side surfaces 13 of the container 10 orthogonally. The cuboid electrode 20 also has a transverse axis Q that is orthogonal to the longitudinal axis L and the transverse axis B and intersects the upper part 22 and the lower part 21 of the cuboid electrode 20 as well as the lower part 11 and the lid 12 of the container 10.

[0045] The two electrodes 20 inside the container 10 are electrically connected to each other via a DC voltage source 40. The DC voltage source 40 preferably has a voltage value of less than or equal to 1.8 V. The DC voltage source 40 can also have a voltage value between 1.23 V and 2.5 V. By applying a DC voltage to the electrodes 20, one of the electrodes 20 becomes negatively charged and is referred to as the cathode 25, while the other electrode 20 becomes positively charged and is referred to as the anode 30.

[0046] The anode 30 is also referred to as the oxygen electrode, since the water 5 is oxidized at the anode 30, releasing oxygen gas 81. The released oxygen gas 81 rises and collects in an oxygen chamber 80, which is formed between the lid 12 of the container 10 and a water surface 6. The released oxygen gas 81 can be released into the atmosphere via an outlet 70A or stored in a separate tank (not shown).

[0047] The cathode 25 is also referred to as the hydrogen electrode, since reduction reactions take place at the cathode 25 in which electrons are transferred to hydrogen ions, producing hydrogen gas 86. The released hydrogen gas 86 collects in a hydrogen chamber 85, which is located between the lid 12 of the container 10 and the water surface 6. The released hydrogen gas 86 can be stored in a separate tank (not shown) via an outlet 70B.

[0048] Inside the vessel 10 of the electrolysis device 1 is the separator 60, which completely separates the anode region (oxygen gas region) from the cathode region (hydrogen gas region) and prevents the oxygen and hydrogen gases 85, 86 from mixing again after their generation. The separator 60 extends from the bottom 11 of the vessel 10 to the lid 12 of the vessel 10. The separator 60 preferably has high ionic conductivity, electrical insulation, corrosion resistance, and mechanical strength. In alkaline electrolysis, porous ceramic or plastic membranes are frequently used as separators 60. In proton exchange membrane electrolysis, a polymer membrane is arranged between the anode region and the cathode region as the separator 60.

[0049] The motion device 50 is mechanically coupled to the electrodes 20, i.e., the anode 30 and the cathode 25. The mechanical coupling can be rigid, e.g., by a rod, flexible, e.g., by a rope, a spring, or an elastic damper, or by frictional contact. During the electrolysis process, the motion device 50 drives the electrodes 20 via the mechanical coupling, causing them to perform a movement, in particular a high-frequency oscillation or vibration, within the container 10.

[0050] In an alternative embodiment not shown, the motion device 50; 150A, 150B can be mechanically coupled to the container 10; 210; 310 in addition to or instead of direct coupling to the electrodes 20, so that the container and thus the entire electrolysis device 1; 100; 200; 300 are set into oscillation or vibration. The accelerations thus generated within the liquid volume also detach the gas bubbles adhering to the electrodes 20 from the electrode surfaces, without altering the electrochemical operation of the electrolysis unit.

[0051] The motion device 50 preferably has a control unit (not shown) that controls the frequency and intensity of the deflection of the movement of the electrode 20 in order to improve the movement, in particular the oscillations and vibrations, according to the specific requirements of gas bubble reduction and gas bubble removal.

[0052] The motion device 50 can be designed as a pneumatic motion device. The pneumatic motion device is preferably designed as a ball vibrator, roller vibrator, or piston vibrator. In particular, the pneumatic motion device can be designed as a high-frequency pneumatic motion device.

[0053] The motion device 50 can be designed as an electric motion device. The electric motion device is preferably designed as an external electric vibrator, an internal electric vibrator, or a shaker bottle. In particular, the electric motion device can be designed as a high-frequency electric motion device.

[0054] The motion device 50 drives the electrode 20 inside the container 10. The electrode can perform a translational movement and / or a rotational movement.

[0055] Translational movements are distinguished between rectilinear translational movement 90 and curved translational movement 95. In rectilinear translational movement 90, the electrode 20 moves along a single spatial direction. Fig. 1 The arrows indicate the directions of movement of the electrodes 20. The movement indicated by the arrows is a rectilinear translational movement 90°. The movement is periodic and decreases and increases the distance to the bottom 11 of the container 10 along the transverse axis Q of the electrode 20. The rectilinear translational movement 90° can also occur along the lateral axis B of the electrode 20. The rectilinear translational movement 90° is directed parallel to a side surface 13 of the container 10. The electrode 20 can also perform two rectilinear translational movements 90° simultaneously. For example, one rectilinear translational movement 90° is directed along the lateral axis B, and the other rectilinear translational movement 90° is directed in the direction of the transverse axis Q.

[0056] In the curved translational motion 95, the electrode 20, or any point on the electrode 20, follows a curved, preferably elliptical, eccentric, or circular, path. Fig. 2 The curved translational motion 95 is indicated by the circular arrow. The curved translational motion 95 has a direction vector in the direction of the longitudinal axis L of the electrode 20 and a vector in the direction of the transverse axis Q of the electrode 20. The curved translational motion 95 runs parallel to the side surfaces 13 of the container 10, which are also intersected by the transverse axis B of the electrode 20.

[0057] For example, the electrode 20 performs a linear translational movement 90, which is generated by an external electric vibrator or pneumatic piston vibrator with a frequency of 15 to 60 Hz, preferably 45 Hz, wherein the displacement or vibration amplitude of the electrode 20 from the rest position is between 0.5 and 2 mm. In another example, the electrode 20 performs a linear translational movement 90, which is generated by a vibrating bottle or internal vibrator with a frequency of 14 to 250 Hz, wherein the displacement or vibration amplitude of the electrode 20 from the rest position is between 0.05 mm and several millimeters.

[0058] In another example, the electrode 20 performs a curved translational movement 95, generated by a pneumatic ball vibrator with a frequency of 705 Hz and a diameter D of 0.067 mm. In another example, the electrode 20 performs a curved translational movement 95, generated by a pneumatic ball vibrator with a frequency of 175 Hz and a diameter D or minimum distance of 1.2 mm. In yet another example, the electrode 20 performs a curved translational movement 95, generated by a pneumatic roller vibrator or ball vibrator with a frequency between 120 and 600 Hz and a diameter D or minimum distance of 0.07 to 3 mm.

[0059] The electrodes 20 can also perform a rotational movement within the container. In particular, the electrode 20 can rotate about its lateral axis B. The electrode 20 can also perform a movement consisting of a rotational and a translational movement.

[0060] In Fig. 2 A cross-sectional view of the electrolysis device 1 from embodiment 1 is shown from a side view.

[0061] The electrode 20 is arranged in a plate-like form within the cuboid container 10, with the movement device 50 being mechanically connected to the electrode 20 at both ends of the upper part 22 of the electrode 20.

[0062] The motion device 50 can have two drive units, which are pneumatic or electric and drive the electrode 20 in the same direction during the electrolysis process. The motion device 50 can also be mechanically connected to the electrode 20 at only one point via a mechanical coupling 99. The curved translational movement 95 is indicated by the circular arrow in the center of the electrode 20.

[0063] In Fig. 3 A second embodiment of the electrolysis device 100 is shown and differs from the one in Fig. 1 and Fig. 2 The illustrated embodiment is configured such that two motion devices 150A and 150B are provided. One motion device 150A is mechanically connected to the negatively charged cathode 25. The other motion device 150B is mechanically connected to the positively charged anode 30.

[0064] The motion devices 150A and 150B can drive the anode 30 and the cathode 25 in the same direction. They can also drive the anode 30 and the cathode 25 in opposite directions. Furthermore, the motion devices 150A and 150B can vary the deflection and frequency at which they drive the anode 30 and cathode 25, respectively.

[0065] If more than two electrodes 20 are arranged inside the container 10, each individual electrode 20 can be driven via its own motion device 150A, 150B. For example, two anodes 30 and two cathodes 25 are arranged in the container 10, each anode 30 and each cathode 25 being mechanically connected to its own motion device 150A, 150B.

[0066] In Fig. 4A Figure 1 shows a cross-sectional view of a third embodiment of an electrolysis device 200 from a top view. The container 210 is cylindrical. The electrodes 20 and the other components are identical to those in the previous embodiments.

[0067] In Fig. 4B Figure 1 shows a sectional view of a fourth embodiment of the electrolysis device 300 from a top view. The container 310 and the electrodes 320 are cylindrical. Otherwise, the structure and design of the electrolysis device 300 are identical to those of the electrolysis devices 1 and 100 of embodiments one and two. Reference symbol list

[0068] 1 Electrolysis device 5 Water 6 Water surface 10 Container 11 Base 12 Lid 13 Side surface 20 Electrode 21 Base part 22 Top part 23 Side surface 25 Cathode 30 anode 40 DC voltage source 50 movement device 60 Separator 70A Outlet (Oxygen gas) 70B Outlet (Hydrogen gas) 80 Oxygen chamber 81 Oxygen gas 85 Hydrogen chamber 86 Hydrogen gas 90 Linear translational movement 95 Curved translational movement 99 Mechanical Coupling 100 Electrolysis device 150A Motion device 150B Motion device 200 Electrolysis device 210 containers 300 Electrolysis device 310 containers 320 Longitudinal axis (electrode) B Broad axis (electrode) Transverse axis (electrode) Diameter

Claims

1. Electrolysis process for producing hydrogen comprising the following process steps: - Applying a voltage to at least one electrode (20; 320) which is at least partially immersed in water (5) or a water mixture in a container (10; 210; 310), - wherein during the electrolysis process the water (5) or the water mixture separates into its components hydrogen and oxygen, and oxygen gas (81) and / or hydrogen gas (86) are formed in the area of ​​the at least one electrode (20; 320), - Moving the at least one electrode (20; 320) by a moving device (50; 150A, 150B), whereby the oxygen gases (81) and / or hydrogen gases (86) adhering to the electrode (20; 320) are detached.

2. Electrolysis process according to claim 1, characterized by the fact thatthe motion device (50; 150A, 150B) sets the at least one electrode (20; 320) into oscillation or vibration, preferably into high-frequency oscillation or high-frequency vibration, during the electrolysis process.

3. Electrolysis process according to one of the preceding claims, characterized by the fact that during the electrolysis process, at least one electrode (20; 320) performs a translational movement.

4. Electrolysis process according to one of the preceding claims, characterized by the fact that during the electrolysis process the electrode (20; 320) performs a straight translational movement 90.

5. Electrolysis process according to one of the preceding claims, characterized by the fact that During the electrolysis process, the electrode (20; 320) is deflected from its rest position by 0.5 mm to 2.5 mm during the straight translational movement 90.

6. Electrolysis process according to one of the preceding claims, characterized by the fact thatthe rectilinear translational movement 90 of the electrode (20; 320) during the electrolysis process has a frequency between 5 and 75 Hz, preferably a frequency between 15 and 60 Hz.

7. Electrolysis process according to one of the preceding claims, characterized by the fact that during the electrolysis process the electrode (20; 320) performs a curved translational movement 95.

8. Electrolysis process according to one of the preceding claims, characterized by the fact that the curved translational movement 95 on a curved path has a maximum diameter D of 0.05 mm to 3 mm.

9. Electrolysis process according to one of the preceding claims, characterized by the fact that the curved translational movement 95 of the electrode (20; 320) during the electrolysis process has a frequency between 20 and 1000 Hz, preferably a frequency between 120 and 705 Hz.

10. Electrolysis process according to one of the preceding claims, characterized by the fact thatthe electrode (20; 320) performs a rotational movement during the electrolysis process.

11. Electrolysis process according to one of the preceding claims, characterized by the fact that at least two electrodes (20; 320), preferably at least one cathode (25) and at least one anode (30), are arranged inside the container (10; 210; 310), and that the at least two electrodes (20; 320) perform the same movement simultaneously during the electrolysis process.

12. Electrolysis device (1; 100; 200; 300) for producing hydrogen, comprising: - a container (10; 210; 310), wherein the container (10; 210; 310) is at least partially filled with water (5) or a water mixture, - at least one electrode (20; 320), wherein the at least one electrode (20; 320) is at least partially immersed in the water (5) or water mixture located inside the container (10; 210; 310), characterized by the fact that- the at least one electrode (20; 320) is arranged to be movable, and - a movement device (50; 150A, 150B) is mechanically connected to the at least one electrode (20; 320) which moves the at least one electrode (20; 320) during the electrolysis process.

13. Electrolysis device (1; 100; 200; 300) according to claim 12, characterized by the fact that The motion device (50; 150A, 150B) is designed as a pneumatic motion device or an electrical motion device, and the motion device (50; 150A, 150B) moves at least one electrode (20; 320) during the electrolysis process.

14. Electrolysis device (1; 100; 200; 300) according to one of claims 12 or 13, characterized by the fact that The pneumatic motion device is designed as a ball vibrator, roller vibrator or piston vibrator.

15. Electrolysis device (1; 100; 200; 300) according to one of claims 12 to 14, characterized by the fact thatat least two electrodes (20; 320) are arranged inside the container (10; 210; 310), between which a DC voltage is applied, such that one of the at least two electrodes (20; 320) is at least an anode (30) and the other of the at least two electrodes (20; 320) is at least a cathode (25), wherein a separator (60) is arranged between the at least one anode (30) and the at least one cathode (25), wherein the at least one anode (30) and the at least one cathode (25) are arranged to be movable and are mechanically connected to the movement device (50; 150A, 150B).

16. Electrolysis device (1; 100; 200; 300) according to one of claims 12 to 15, characterized by the fact thatthe electrolysis device (1; 100; 200; 300) has two motion devices (50; 150A, 150B), wherein one motion device (50; 150A, 150B) mechanically moves the at least one cathode (25) and the other motion device (50; 150A, 150B) mechanically moves the at least one anode (30) during the electrolysis process.

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