A rolled hydrogen production electrode and electrolyzer device

Abstract

The present application relates to a rolled hydrogen production electrode and an electrolyzer device, and relates to the technical field of electrolytic hydrogen production. The rolled hydrogen production electrode comprises an anode plate, a first separator, a nickel hydroxide electrode, a second separator, and a cathode plate arranged in sequence, wherein the anode plate, the first separator, the nickel hydroxide electrode, the second separator, and the cathode plate are wound around a center. The present application has the effect of reducing the space occupied by the electrolyzer, improving the electrolysis efficiency and space utilization.

Description

Technical Field

[0001] The present application relates to the technical field of electrolytic hydrogen production, and in particular to a rolled hydrogen production electrode and an electrolytic cell device. Background Art

[0002] As the world pays more and more attention to the transition to green and low-carbon energy, the status of hydrogen energy, as one of the important clean energy sources, is gradually increasing.

[0003] Alkaline water electrolysis to produce hydrogen is currently the most mature and commonly used method for producing hydrogen. Electrolyzers can be divided into unipolar water electrolyzers and bipolar water electrolyzers. Unipolar water electrolyzers are large in size and have low efficiency. Bipolar water electrolyzers have a current bypass problem that increases energy consumption and reduces overall electrolysis efficiency. With the continuous increase in industrial demand, the scale of electrolyzers is getting larger and larger, and the space occupied is increasing. Optimizing electrolysis efficiency and improving space utilization are the development directions of water electrolysis hydrogen production devices. Summary of the invention

[0004] In order to reduce the space occupied by the electrolytic cell and improve the electrolysis efficiency and space utilization, the present application provides a rolled hydrogen production electrode and an electrolytic cell device.

[0005] In the first aspect, the present application provides a rolled hydrogen production electrode adopting the following technical solution: A rolled hydrogen production electrode comprises an anode plate, a first separator, a nickel hydroxide electrode, a second separator and a cathode plate which are arranged in sequence, wherein the anode plate, the first separator, the nickel hydroxide electrode, the second separator and the cathode plate are rolled around a center.

[0006] By adopting the above technical solution, the present application adopts the above structure to form a rolled hydrogen production electrode, making the structure more compact, which is conducive to arranging more electrolysis units in a limited space, improving space utilization, and thus effectively improving electrolysis efficiency.

[0007] Optionally, the anode plate, the nickel hydroxide electrode and the cathode plate are all made of metal wire mesh.

[0008] By adopting the above technical solution, the metal wire mesh can increase the reaction area, reduce the gas content, and further reduce the distance between electrodes, thereby improving the electrolysis efficiency.

[0009] Optionally, the first partition net and the second partition net are both formed by a hot spraying and cold fixing process, and the first partition net and the second partition net are made of polytetrafluoroethylene or high-density polyethylene.

[0010] By adopting the above technical solution, the first separator and the second separator made by the above process and materials can fully separate the electrode plates to prevent short circuit, and at the same time will not hinder the electrolyte from penetrating the first separator or the second separator to flow, thereby ensuring the normal operation of the electrolytic cell.

[0011] Optionally, the number of the anode plates is set to be single or multiple, and the number of the cathode plates is set to be single or multiple.

[0012] By adopting the above technical solution and setting the number of anode plates or cathode plates to multiple, the electrolysis area and electrolysis efficiency can be effectively improved.

[0013] In the second aspect, the present application also provides a rolled hydrogen-producing electrolyzer device, comprising the above-mentioned rolled hydrogen-producing electrode, and also comprising an outer shell, wherein an upper end plate is provided at the upper end of the outer shell, an upper groove is provided on the bottom wall of the upper end plate, and an air outlet is provided on the surface of the upper end plate, a lower end plate is provided at the bottom end of the outer shell, a lower groove is provided on the surface of the lower end plate, and a liquid inlet is provided on the bottom wall of the lower end plate, the rolled hydrogen-producing electrode is fixed between the upper groove and the lower groove, and the peripheral wall of the outer shell is connected with an anode plate contact, a cathode plate contact and a nickel hydroxide electrode contact.

[0014] By adopting the above technical solution, the rolled hydrogen-producing electrode is placed in the outer shell, fixed by the lower slot, and capped with the upper end plate, so that the rolled hydrogen-producing electrode can be fixed between the upper slot and the lower slot. The rolled hydrogen-producing electrode can effectively save space and improve the space utilization of the electrolytic cell. The smaller space can also improve the electrolysis efficiency of the electrolytic cell.

[0015] Optionally, the upper and lower parts of the lower slot are concave in shape, the upper notch of the lower slot is used to fix the rolled hydrogen-producing electrode, and the lower notch of the lower slot is used to circulate the electrolyte; the upper and lower parts of the upper slot are concave in shape, the lower notch of the upper slot is used to fix the rolled hydrogen-producing electrode, and the upper notch of the upper slot is used to circulate hydrogen or oxygen and the electrolyte.

[0016] By adopting the above technical solution, the internal electrode plates are supported as a whole to prevent displacement or deformation of the electrode plates and leakage of the electrolyte. The upper and lower grooves can provide a stable fixation for the rolled hydrogen production electrode without hindering the circulation of electrolyte, hydrogen and oxygen, so that the efficiency of hydrogen production by electrolysis can be further improved.

[0017] Optionally, the shell is cylindrical.

[0018] By adopting the above technical solution, the cylindrical shell can further reduce the space occupied by the electrolytic cell, thereby improving space utilization and electrolysis efficiency.

[0019] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application uses a rolled hydrogen production electrode to make the structure more compact, which is conducive to arranging more electrolysis units in a limited space and improving space utilization; 2. The present application utilizes a rolled hydrogen production electrode to improve the uniformity of current distribution, which helps to improve electrolysis efficiency and reduce energy loss caused by uneven current distribution; 3. The present application utilizes a rolled hydrogen production electrode to support a higher current density, which is beneficial to accelerate the electrolysis reaction rate and increase the yield; 4. This application uses the structure of a rolled hydrogen production electrode, which is easier to customize and adjust according to actual needs; 5. The first and second separators of the present application can isolate the plates to prevent short circuits, thereby improving the safety of the electrolytic hydrogen production process; 6. The present application utilizes the first separator and the second separator to provide a fluid channel for the electrolyte to flow, thereby effectively improving the electrolysis efficiency; 7. The present application can accurately control the distance between the cathode and anode through the thickness of the first separator and the second separator, thereby reducing electrode resistance, lowering power consumption and improving economic benefits; 8. The present application increases the reaction area, reduces the gas content, and shortens the distance between electrodes by using a metal wire mesh, making the electrolytic cell more compact, simpler to manufacture, and more convenient to maintain; 9. The present application utilizes a double concave structure of upper and lower slots, which, in addition to fixing the rolled hydrogen-producing electrode, can also circulate electrolyte and gas, thereby ensuring electrolysis efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a rolled hydrogen production electrode in an embodiment of the present application.

[0021] Figure 2 It is a grid diagram.

[0022] Figure 3 It is a schematic diagram of the electrolytic cell apparatus.

[0023] Figure 4 It is a structural schematic diagram of the upper card slot and the lower card slot.

[0024] Explanation of the reference numerals: 1. lower end plate; 2. lower card slot; 3. anode plate; 4. first spacer; 5. second spacer; 6. cathode plate; 7. nickel hydroxide electrode; 8. liquid inlet; 9. upper card slot; 10. upper end plate; 11. gas outlet; 12. outer shell; 13. anode plate contact; 14. cathode plate contact; 15. nickel hydroxide electrode contact. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-4 This application is described in further detail.

[0026] The present application embodiment discloses a rolled hydrogen production electrode. Figure 1 and Figure 2, including an anode plate 3, a first separator 4, a nickel hydroxide electrode 7, a second separator 5 and a cathode plate 6, the anode plate 3, the first separator 4, the nickel hydroxide electrode 7, the second separator 5 and the cathode plate 6 are wound around the center to form a rolled hydrogen production electrode; in this embodiment, the number of anode plates 3 can be set to single or multiple, and the number of cathode plates 6 can also be set to single or multiple, thereby increasing the reaction area, thereby improving the electrolysis area and electrolysis efficiency; the first separator 4 and the second separator 5 are both made of hot spraying and cold fixing technology, and the material of the first separator 4 and the second separator 5 is polytetrafluoroethylene or high-density polyethylene, so as to separate the plates to prevent short circuit, and the electrolyte can also penetrate the separator to flow between the electrodes, the first separator 4 and the second separator 5 have the same structure, and the first and second are used to indicate the spacing relationship between the anode plate 3, the nickel hydroxide electrode 7 and the cathode plate 6; the anode plate 3, the nickel hydroxide electrode 7 and the cathode plate 6 are all made of metal wire mesh to increase the reaction area, reduce the gas content, and further reduce the distance between the electrodes to improve the electrolysis efficiency.

[0027] The implementation principle of a rolled hydrogen-producing electrode in an embodiment of the present application is as follows: the anode plate 3, the first separator 4, the nickel hydroxide electrode 7, the second separator 5 and the cathode plate 6 are rolled around the center, which is conducive to arranging more electrolysis units in a limited space and improving space utilization. At the same time, the rolled hydrogen-producing electrode is used to improve the uniformity of current distribution, which helps to improve the electrolysis efficiency and reduce the energy loss caused by uneven current distribution. The rolled hydrogen-producing electrode supports a higher current density, which is conducive to accelerating the electrolysis reaction rate and increasing the output.

[0028] The present application also provides a roll-type hydrogen production electrolyzer device, referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , including a shell 12. In this embodiment, the shell 12 is cylindrical, and a lower end plate 1 is arranged at the bottom of the shell 12. The bottom wall of the lower end plate 1 is connected to a liquid inlet 8. A lower card slot 2 is arranged on the surface of the lower end plate 1. The upper and lower parts of the lower card slot 2 are concave. The upper notch of the lower card slot 2 is used to fix the rolled hydrogen production electrode, and the lower notch of the lower card slot 2 is used to circulate the electrolyte. The uniform distribution of the lower card slot 2 also enhances the fluidity of the electrolysis and helps to reduce the concentration polarization voltage; an upper end plate 10 is arranged at the top of the shell 12. The top wall of the upper end plate 10 is connected to an outlet 11. The upper end An upper slot 9 is provided on the bottom wall of the plate 10, and the upper and lower parts of the upper slot 9 are both concave. The lower notch of the upper slot 9 is used to fix the rolled hydrogen-producing electrode, and the upper notch of the upper slot 9 is used to circulate hydrogen or oxygen and the electrolyte. The rolled hydrogen-producing electrode is fixed between the upper slot 9 and the lower slot 2; the outer wall of the shell 12 is connected with an anode plate contact 13, a cathode plate contact 14 and a nickel hydroxide electrode contact 15 for power supply; the above-mentioned rolled hydrogen-producing electrode and electrolyzer device constitute a standard module, and based on the hydrogen production amount, multiple standard modules can be selected to be connected in parallel.

[0029] The implementation principle of a rolled hydrogen-producing electrolyzer device in an embodiment of the present application is as follows: a rolled hydrogen-producing electrode is placed in a shell 12, fixed by a lower card slot 2, and capped with an upper end plate 10, thereby enabling the rolled hydrogen-producing electrode to be fixed between an upper card slot 9 and a lower card slot 2. The rolled hydrogen-producing electrode can effectively save space and improve the space utilization rate of the electrolyzer. A smaller space can also improve the electrolysis efficiency of the electrolyzer.

[0030] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rolled hydrogen production electrode, characterized in that: The invention comprises an anode plate (3), a first separator (4), a nickel hydroxide electrode (7), a second separator (5) and a cathode plate (6) which are arranged in sequence, wherein the anode plate (3), the first separator (4), the nickel hydroxide electrode (7), the second separator (5) and the cathode plate (6) are wound around a center.

2. A rolled hydrogen production electrode according to claim 1, characterized in that: The anode plate (3), the nickel hydroxide electrode (7) and the cathode plate (6) are all made of metal wire mesh.

3. The rolled hydrogen production electrode according to claim 1, characterized in that: The first partition net (4) and the second partition net (5) are both made by a hot spraying and cold fixing process, and the first partition net (4) and the second partition net (5) are made of polytetrafluoroethylene or high-density polyethylene.

4. The rolled hydrogen production electrode according to claim 1, characterized in that: The number of the anode plates (3) is set to be single or multiple, and the number of the cathode plates (6) is set to be single or multiple.

5. A roll-type hydrogen production electrolyzer device, characterized in that: It comprises a rolled hydrogen production electrode as claimed in any one of claims 1 to 4, and also comprises a shell (12), wherein an upper end plate (10) is arranged at the upper end of the shell (12), an upper groove (9) is arranged on the bottom wall of the upper end plate (10), a gas outlet (11) is arranged on the surface of the upper end plate (10), a lower end plate (1) is arranged at the bottom end of the shell (12), a lower groove (2) is arranged on the surface of the lower end plate (1), a liquid inlet (8) is arranged on the bottom wall of the lower end plate (1), the rolled hydrogen production electrode is fixed between the upper groove (9) and the lower groove (2), and the peripheral wall of the shell (12) is connected with an anode plate contact (13), a cathode plate contact (14) and a nickel hydroxide electrode contact (15).

6. A rolled hydrogen production electrolyzer device according to claim 5, characterized in that: The upper and lower parts of the lower card slot (2) are both in a concave shape, the upper notch of the lower card slot (2) is used to fix the rolled hydrogen production electrode, and the lower notch of the lower card slot (2) is used to circulate the electrolyte; the upper and lower parts of the upper card slot (9) are both in a concave shape, the lower notch of the upper card slot (9) is used to fix the rolled hydrogen production electrode, and the upper notch of the upper card slot (9) is used to circulate hydrogen or oxygen and the electrolyte.

7. A rolled hydrogen production electrolyzer device according to claim 5, characterized in that: The housing (12) is cylindrical.

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