CN113403630B - Hydrogen producing device by catalytic electrolysis - Google Patents

Hydrogen producing device by catalytic electrolysis Download PDF

Info

Publication number
CN113403630B
CN113403630B CN202110690252.1A CN202110690252A CN113403630B CN 113403630 B CN113403630 B CN 113403630B CN 202110690252 A CN202110690252 A CN 202110690252A CN 113403630 B CN113403630 B CN 113403630B
Authority
CN
China
Prior art keywords
electrode
hydrogen
electrolysis
catalytic
material particles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110690252.1A
Other languages
Chinese (zh)
Other versions
CN113403630A (en
Inventor
陈雪凤
彭娟
马军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Boyiyuan Electromechanical Equipment Co ltd
Original Assignee
Hunan Boyiyuan Electromechanical Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Boyiyuan Electromechanical Equipment Co ltd filed Critical Hunan Boyiyuan Electromechanical Equipment Co ltd
Priority to CN202110690252.1A priority Critical patent/CN113403630B/en
Publication of CN113403630A publication Critical patent/CN113403630A/en
Application granted granted Critical
Publication of CN113403630B publication Critical patent/CN113403630B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • C25B11/036—Bipolar electrodes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/075—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/075—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound
    • C25B11/077—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound the compound being a non-noble metal oxide
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/075—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound
    • C25B11/089—Alloys
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/091—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
    • C25B9/21—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms two or more diaphragms
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70—Assemblies comprising two or more cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

The invention discloses a device for preparing hydrogen by catalytic electrolysis, which comprises a shell, an AC-DC converter, an oxygen collecting system, a hydrogen collecting system and an electrolyte supplying system, wherein the electrolyte supplying system is arranged in the shell and is internally provided with a plurality of independent electrolysis generating chambers, a diaphragm is arranged between every two adjacent electrolysis generating chambers, an electrolyzed water unit is arranged in each electrolysis generating chamber and comprises a bipolar catalytic electrode and a sealing piece, the bipolar catalytic electrode comprises an anode electrode and a cathode electrode, the anode electrode and the cathode electrode are separated by an electrode clapboard, the cathode electrode is coated with cathode material particles for catalytic electrolysis, the electrode clapboard divides each electrolysis generating chamber into an oxygen generating area and a hydrogen generating area, the bottom of the oxygen generating area and the top of the hydrogen generating area are both provided with the sealing pieces, the oxygen collecting system is communicated with the oxygen generating area through a first pipeline, the hydrogen collecting system is communicated with the hydrogen generating area through a second pipeline, so that the technical cost is low and the electrolysis efficiency is high.

Description

Hydrogen producing device by catalytic electrolysis
Technical Field
The invention mainly relates to the technical field of hydrogen preparation, in particular to a device for preparing hydrogen through catalytic electrolysis.
Background
With the increasing energy crisis and environmental crisis worldwide, new energy becomes a development direction which is more and more emphasized, and hydrogen energy becomes an important means for realizing carbon peak reaching and carbon neutralization. With the invention, development and industrialization of hydrogen fuel cells, the hydrogen preparation needs to be realized in a cleaner way, so that the effects of energy conservation and emission reduction can be achieved. The current preparation mode of hydrogen gas limits the popularization and application of hydrogen energy to a great extent. The hydrogen production by water electrolysis is considered as a main way for producing hydrogen, and particularly, the hydrogen is produced by electrolyzing water by utilizing abandoned energy in a new energy power generation system which utilizes solar energy and wind energy with large fluctuation amplitude to impact a power grid and produce abandoned wind and abandoned light, so that the energy is utilized most fully. With the increasing of the hydrogen consumption, the water electrolysis technology has been developed and applied, mainly including alkaline water electrolysis, PEM (Proton Exchange Membrane) water electrolysis and other technologies, but there are situations that precious metals are needed to be used as catalysts, especially the PEM water electrolysis technology, a large amount of rare precious metals such as platinum and iridium are needed to be used as catalysts, and the precious metals are also main catalysts of fuel cells, so that the catalysts are inevitably contended with the fuel cells, and the cost is difficult to control. Moreover, the water electrolysis technologies have the problem of large electrode polarization, which results in low electrolysis efficiency. In addition, designers of conventional water electrolysis apparatuses are constantly improving their original designs in an attempt to improve their original drawbacks, and the effects are relatively insignificant because they are not changed from the material side.
Disclosure of Invention
In view of this, the present invention provides a device for producing hydrogen by catalytic electrolysis, which can solve the technical defects of the prior art, such as high cost and low electrolysis efficiency.
The invention relates to a device for preparing hydrogen by catalytic electrolysis, which comprises a shell, an AC-DC converter, an oxygen collecting system, a hydrogen collecting system and an electrolyte supplying system, wherein the electrolyte supplying system is arranged in the shell, a plurality of independent electrolysis generating chambers are arranged in the electrolyte supplying system, a diaphragm is arranged between every two adjacent electrolysis generating chambers, an electrolyzed water unit is arranged in each electrolysis generating chamber, the electrolyzed water units are connected in series, each electrolyzed water unit comprises a bipolar catalytic electrode and a sealing element, the bipolar catalytic electrode comprises an anode electrode and a cathode electrode, the anode electrode and the cathode electrode are separated by an electrode clapboard, the cathode electrode is coated with cathode material particles for catalytic electrolysis, the electrode clapboard divides each electrolysis generating chamber into an oxygen generating area and a hydrogen generating area, and the bottom of the oxygen generating area and the top of the hydrogen generating area are both provided with the sealing elements, the oxygen collection system is communicated with the oxygen generation area through a first pipeline, the hydrogen collection system is communicated with the hydrogen generation area through a second pipeline, and the AC-DC converter is used for converting external alternating current into direct current to provide electrolytic electric energy.
Further, an anode electrode of the bipolar catalytic electrode is formed by coating anode material particles on one surface of a first metal plate substrate, a cathode electrode of the bipolar catalytic electrode is formed by coating cathode material particles on one surface of a second metal plate substrate, the first metal plate substrate coated with the anode material particles, an electrode separator and the second metal plate substrate coated with the cathode material particles are sequentially overlapped and combined to form the bipolar catalytic electrode, and one surface of the first metal plate substrate coated with the anode material particles and one surface of the second metal plate substrate coated with the cathode material particles are arranged in a mode of deviating from each other.
Furthermore, the anode electrode and the cathode electrode of the bipolar catalytic electrode are respectively completed by coating anode material particles on one surface of the third metal plate substrate and coating cathode material particles on the other surface of the third metal plate substrate.
Further, the anode material particles are one or a mixture of two or more of nickel, nickel oxide and nickel hydroxide, and the cathode material particles are rare earth alloy.
Furthermore, an electrolysis liquid outlet is formed in the bipolar catalytic electrode, an oxygen outlet, a hydrogen outlet and an electrolysis liquid inlet are formed in the top of the bipolar catalytic electrode, the electrolysis liquid inlet and the electrolysis liquid outlet are communicated with each electrolysis generation chamber, the oxygen outlet is communicated with the first pipeline, and the hydrogen outlet is communicated with the second pipeline.
Furthermore, an electrolysis liquid outlet, an electrolysis liquid inlet, an oxygen outlet and a hydrogen outlet are formed in the first metal plate base body, the second metal plate base body and the electrode partition plate.
Further, the device for preparing hydrogen by catalytic electrolysis also comprises a current monitor and a voltage monitor, wherein the current monitor and the voltage monitor are respectively used for detecting and controlling the current and the voltage of the electrolytic reaction.
Further, a gas concentration detection device, an explosion venting and quick discharging port are installed in the hydrogen collecting system, the gas concentration detection device is used for determining whether the hydrogen concentration is in a safe range, and the explosion venting and quick discharging port is used for gas discharging.
Further, the device for preparing hydrogen through catalytic electrolysis also comprises a composite frame, and the composite frame is coated on the periphery of the diaphragm.
Further, the electrolyte supply system takes an alkaline solution as an electrolyte.
The invention relates to a device for preparing hydrogen by catalytic electrolysis, which comprises a shell, an AC-DC converter, an oxygen collecting system, a hydrogen collecting system and an electrolyte supplying system, wherein the electrolyte supplying system is arranged in the shell, a plurality of independent electrolysis generating chambers are arranged in the electrolyte supplying system, a diaphragm is arranged between every two adjacent electrolysis generating chambers, an electrolyzed water unit is arranged in each electrolysis generating chamber, the electrolyzed water units are connected in series, each electrolyzed water unit comprises a bipolar catalytic electrode and a sealing element, the bipolar catalytic electrode comprises an anode electrode and a cathode electrode, the anode electrode and the cathode electrode are separated by an electrode clapboard, the cathode electrode is coated with cathode material particles for catalytic electrolysis, the electrode clapboard divides each electrolysis generating chamber into an oxygen generating area and a hydrogen generating area, and the bottom of the oxygen generating area and the top of the hydrogen generating area are both provided with the sealing elements, the oxygen collection system is communicated with the oxygen generation area through a first pipeline, the hydrogen collection system is communicated with the hydrogen generation area through a second pipeline, the AC-DC converter is used for converting external alternating current into direct current to provide electrolytic electric energy, and gas separation and high-purity gas preparation are effectively achieved through the arrangement.
In addition, the device for preparing hydrogen by catalytic electrolysis uses one or a mixture of two or more of nickel, nickel oxide and nickel hydroxide as an anode and rare earth alloy as a cathode, and the anode and the cathode are separated by a diaphragm, so that the problem of large polarization of the traditional water electrolysis hydrogen preparation electrode is effectively solved.
Furthermore, the hydrogen preparation device through catalytic electrolysis is provided with the special diaphragm with the composite frame in the design process, so that hydrogen and oxygen generated by electrolysis can be mixed or isolated according to needs, and the hydrogen preparation purity is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a catalytic electrolysis hydrogen production apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the bipolar catalytic electrode of FIG. 1.
Description of reference numerals:
1. a housing; 2. an electrolyte supply system; 3. a diaphragm; 4. a bipolar catalytic electrode; 5. a seal member; 6. an anode electrode; 7. a cathode electrode; 8. an electrode separator; 9. a first conduit; 10. a second conduit; 11. anode material particles; 12. particles of a cathode material; 13. a first metal plate substrate; 14. a second metal plate substrate; 15. an electrolysis liquid outlet; 16. an oxygen outlet; 17. a hydrogen outlet; 18. and (4) electrolyzing the liquid inlet.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In the present invention, the terms "top", "bottom", "inner", "outer", "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the scope of the present invention. The terms "first", "second" and "third" are used mainly to distinguish different components, but do not specifically limit the components.
Fig. 1 is a schematic structural view of a catalytic electrolysis hydrogen production apparatus according to an embodiment of the present invention. The device for preparing hydrogen by catalytic electrolysis comprises a shell 1, an AC-DC (Alternating current-Direct current) converter, an oxygen collecting system, a hydrogen collecting system and an electrolyte supplying system 2, wherein the electrolyte supplying system 2 is arranged in the shell 1, a plurality of independent electrolysis generating chambers are arranged in the shell, a diaphragm 3 is arranged between every two adjacent electrolysis generating chambers, an electrolytic water unit is arranged in each electrolysis generating chamber and comprises a bipolar catalytic electrode 4 and a sealing piece 5, the diaphragm 3 is used for isolating the bipolar catalytic electrode 4 to avoid contact short circuit of the bipolar catalytic electrode, an ion channel is formed by the diaphragm 3 and electrolyte in the electrolyte supplying system 2 together, the electrolytic hydrogen production reaction is convenient to carry out, the electrolytic water units are connected in series, the bipolar catalytic electrode 4 comprises an anode electrode 6 and a cathode electrode 7, wherein, the anode electrode 6 and the cathode electrode 7 are separated by an electrode separator 8, the cathode electrode 7 is coated with cathode material particles 12 for catalytic electrolysis, each electrolysis generation chamber is divided into an oxygen generation area and a hydrogen generation area by the electrode separator 8, the bottom of the oxygen generation area and the top of the hydrogen generation area are both provided with a sealing member 5, an oxygen collection system is communicated with the oxygen generation area through a first pipeline 9 and can collect and store oxygen generated by the anode electrode 6, a hydrogen collection system is communicated with the hydrogen generation area through a second pipeline 10 and can collect and store hydrogen generated by the cathode electrode 7, and an AC-DC converter is used for converting external alternating current into direct current to provide electrolytic electric energy. It should be noted that, in order to determine that the concentration of the collected hydrogen is within the safe range and avoid the occurrence of explosion, the hydrogen collection system is provided with a gas concentration detection device and an explosion venting and rapid discharging port, and once the gas concentration detection device detects that the concentration of the collected hydrogen exceeds the preset safe range, the explosion venting and rapid discharging port is started to discharge the hydrogen.
Referring to fig. 2, the anode electrode 6 of the bipolar catalytic electrode 4 is formed by coating the anode material particles 11 on one surface of the first metal plate substrate 13, the cathode electrode 7 thereof is formed by coating the cathode material particles 12 on one surface of the second metal plate substrate 14, the first metal plate substrate 13 coated with the anode material particles 11, the electrode separator 8 and the second metal plate substrate 14 coated with the cathode material particles 12 are sequentially stacked and combined to form the bipolar catalytic electrode 4, and the surface of the first metal plate substrate 13 coated with the anode material particles 11 is separated from the surface of the second metal plate substrate 14 coated with the cathode material particles 12.
It should be noted that the present invention is not limited to first making the anode electrode 6 and the cathode electrode 7 separately, and then combining them into the bipolar catalytic electrode 4 through the electrode separator 8, in other embodiments, the anode electrode 6 and the cathode electrode 7 of the bipolar catalytic electrode 4 are respectively completed by coating one surface of the third metal plate substrate with the anode material particles 11, and coating the other surface with the cathode material particles 12, in which case only one metal plate substrate is needed. Preferably, the first metal plate substrate 13, the second metal plate substrate 14 and the third metal plate substrate are made of nickel plates, the anode material particles 11 are made of one or a mixture of two or more of nickel, nickel oxide and nickel hydroxide, and the cathode material particles 12 are made of rare earth alloy, but other materials can be used for the anode material particles 11 and the cathode material particles 12. Therefore, in the bipolar catalytic electrode 4 of the present invention, the cathode and anode coated materials do not contain precious and rare metals such as platinum and iridium, and instead, rare earth alloys are used as the main components, which not only greatly reduces the cost of the hydrogen preparation device, but also helps to put precious metals such as platinum and iridium into the hydrogen fuel cell product, and does not compete with the hydrogen fuel cell product for resources under the condition of providing the hydrogen for the hydrogen fuel cell product, thereby effectively promoting the industrial development.
In a further technical scheme, an electrolysis liquid outlet 15 is arranged at the bottom of the bipolar catalytic electrode 4, an oxygen outlet 16, a hydrogen outlet 17 and an electrolysis liquid inlet 18 are respectively arranged at the top of the bipolar catalytic electrode, the electrolysis liquid inlet 18 and the electrolysis liquid outlet 15 are communicated with each electrolysis generation chamber, the oxygen outlet 16 is communicated with a first pipeline 9, and the hydrogen outlet 17 is communicated with a second pipeline 10, specifically, referring to fig. 2, the electrolysis liquid outlet 15, the electrolysis liquid inlet 18, the oxygen outlet and the hydrogen outlet 17 are respectively arranged on the first metal plate substrate 13, the second metal plate substrate 14 and the electrode separator 8.
The device for preparing hydrogen by catalytic electrolysis takes alkaline solution as electrolyte, and OH in electrolyte at anode end after the device is electrified-Will oxidize to O2At the cathode terminal H2H in O+Will be reduced to generate H2Since the rare earth alloy is an effective catalyst for the cathode reaction, the reaction efficiency can be improved, so that an oxygen generation region and a hydrogen generation region are respectively formed between the diaphragm 3 and the first metal plate substrate 13 and the second metal plate substrate 14 of the bipolar catalytic electrode 4, a gas channel for separating hydrogen and oxygen can be formed through the sealing member 5, and gas collection is respectively performed by combining the external first pipeline 9 and the external second pipeline 10. It should be noted that, when the anode electrode 6 and the cathode electrode 7 of the bipolar catalytic electrode 4 are respectively completed by coating one surface of the third metal plate substrate with the anode material particles 11 and the other surface of the third metal plate substrate with the cathode material particles 12, the third metal plate is manufactured into a multilayer structure, and hydrogen and oxygen runners are respectively formed on the third metal plate substrate for gas collection. Meanwhile, an electrolyte liquid level controller is arranged in the electrolyte supply system 2 and used for controlling the supply amount of the electrolyte and ensuring the reaction.
In a further technical scheme, the device for preparing hydrogen by catalytic electrolysis further comprises a current monitor and a voltage monitor, wherein the current monitor and the voltage monitor are respectively used for detecting and controlling the current and the voltage of the electrolytic reaction, so that the electrolytic reaction is ensured to be carried out in a preset interval, and an alarm can be given and power supply can be stopped when abnormality occurs.
Meanwhile, in the device, the diaphragm 3 needs to be subjected to edge sealing treatment, so that gas cannot flow through the diaphragm, and the periphery of the diaphragm 3 is coated with the composite frame, so that the insulating and airtight diaphragm 3 with the composite frame is formed.
To sum up, the device for preparing hydrogen by catalyzing and electrolyzing water effectively realizes the progress of the water electrolysis hydrogen preparation technology on one hand, introduces the novel bipolar catalytic electrode 4 with the gas separation structure into the hydrogen preparation device, is convenient for realizing gas separation and preparation of high-purity gas, does not use rare noble metals such as platinum, iridium and the like, and uses rare earth alloy instead, thereby not only effectively controlling the cost, but also providing guarantee for rationalization of resources in the whole industry; on the other hand, the bipolar catalytic electrode 4 structure and the rare earth alloy are used, so that the reaction resistance impedance and the electrochemical impedance are effectively reduced, and the reaction efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. A device for preparing hydrogen by catalytic electrolysis is characterized by comprising a shell, an AC-DC converter, an oxygen collecting system, a hydrogen collecting system and an electrolyte supplying system, wherein the electrolyte supplying system is arranged in the shell, a plurality of independent electrolysis generating chambers are arranged in the electrolyte supplying system, a diaphragm is arranged between every two adjacent electrolysis generating chambers, the periphery of the diaphragm is coated with a composite frame, the edge of the diaphragm is sealed so as to be insulated and airtight, an electrolyzed water unit is arranged in each electrolysis generating chamber and connected in series, each electrolyzed water unit comprises a bipolar catalytic electrode and a sealing element, the bipolar catalytic electrode comprises an anode electrode and a cathode electrode, the anode electrode and the cathode electrode are separated by an electrode separator, the anode electrode is coated with anode material particles, the cathode electrode is coated with cathode material particles for catalytic electrolysis, each electrolysis generation chamber is divided into an oxygen generation region and a hydrogen generation region by the electrode partition plate, sealing elements are arranged at the bottom of the oxygen generation region and the top of the hydrogen generation region, the oxygen collection system is communicated with the oxygen generation region through a first pipeline, the hydrogen collection system is communicated with the hydrogen generation region through a second pipeline, the AC-DC converter is used for converting external alternating current into direct current to provide electrolytic electric energy, wherein the anode material particles are one or a mixture of two or more of nickel, nickel oxide and nickel hydroxide, and the cathode material particles are rare earth alloy.
2. The apparatus for preparing hydrogen through catalytic electrolysis according to claim 1, wherein the anode electrode of the bipolar catalytic electrode is formed by coating one surface of a first metal plate substrate with anode material particles, the cathode electrode thereof is formed by coating one surface of a second metal plate substrate with cathode material particles, the first metal plate substrate coated with anode material particles, the electrode separator and the second metal plate substrate coated with cathode material particles are sequentially stacked and combined to form the bipolar catalytic electrode, and the surface of the first metal plate substrate coated with anode material particles is away from the surface of the second metal plate substrate coated with cathode material particles.
3. The apparatus for producing hydrogen by catalytic electrolysis according to claim 1, wherein the anode and cathode of the bipolar catalytic electrode are respectively coated with anode material particles on one side and cathode material particles on the other side of the third metal plate substrate.
4. The apparatus for preparing hydrogen by catalytic electrolysis according to claim 2, wherein the bipolar catalytic electrode is provided with an electrolysis liquid outlet, and the top of the bipolar catalytic electrode is respectively provided with an oxygen outlet, a hydrogen outlet and an electrolysis liquid inlet, the electrolysis liquid inlet and the electrolysis liquid outlet are communicated with each electrolysis generation chamber, the oxygen outlet is communicated with the first pipeline, and the hydrogen outlet is communicated with the second pipeline.
5. The apparatus for preparing hydrogen by catalytic electrolysis according to claim 4, wherein the first metal plate substrate, the second metal plate substrate and the electrode separator are all provided with an electrolysis liquid outlet, an electrolysis liquid inlet, an oxygen outlet and a hydrogen outlet.
6. The apparatus for producing hydrogen by catalytic electrolysis according to claim 1, further comprising a current monitor and a voltage monitor for detecting and controlling the current and voltage of the electrolysis reaction, respectively.
7. The apparatus for producing hydrogen by catalytic electrolysis according to claim 1, wherein the hydrogen collection system is provided with a gas concentration detection device for determining whether the hydrogen concentration is within a safe range, an explosion relief and a quick discharge port for gas discharge.
8. The apparatus for producing hydrogen by catalytic electrolysis according to claim 1, wherein the electrolyte supply system uses an alkaline solution as the electrolyte.
CN202110690252.1A 2021-06-22 2021-06-22 Hydrogen producing device by catalytic electrolysis Active CN113403630B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110690252.1A CN113403630B (en) 2021-06-22 2021-06-22 Hydrogen producing device by catalytic electrolysis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110690252.1A CN113403630B (en) 2021-06-22 2021-06-22 Hydrogen producing device by catalytic electrolysis

Publications (2)

Publication Number Publication Date
CN113403630A CN113403630A (en) 2021-09-17
CN113403630B true CN113403630B (en) 2022-03-15

Family

ID=77682328

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110690252.1A Active CN113403630B (en) 2021-06-22 2021-06-22 Hydrogen producing device by catalytic electrolysis

Country Status (1)

Country Link
CN (1) CN113403630B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113789546B (en) * 2021-10-14 2024-03-26 中国华能集团清洁能源技术研究院有限公司 Diaphragm integrity test system and use method
CN114108015B (en) * 2021-12-16 2023-08-04 合肥综合性国家科学中心能源研究院(安徽省能源实验室) Filter-pressing type membraneless water electrolytic tank
CN114318402A (en) * 2022-01-21 2022-04-12 湖南博忆源机电设备有限公司 Water electrolysis hydrogen production electrode and preparation method thereof
CN114836775A (en) * 2022-03-16 2022-08-02 上海电力大学 Integrated portable photovoltaic water electrolysis hydrogen production device and hydrogen production system
CN115323399A (en) * 2022-09-02 2022-11-11 四川大学 Non-pure water solution desalination-free in-situ direct electrolysis hydrogen production device and use method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8940151B1 (en) * 2011-10-31 2015-01-27 Advanced Hydrogen Products, LLC Water electrolysis systems and methods

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208451A (en) * 1978-02-28 1980-06-17 Compagnie Generale D'electricite Bipolar electrode for an electrolyzer
JPS5845388A (en) * 1981-09-09 1983-03-16 Chlorine Eng Corp Ltd Electrolytic cell
CN1198952C (en) * 2002-06-21 2005-04-27 华东师范大学 Rare-earth alloy material, its preparing process and its application as cathode in electrolysis industry
CN201530867U (en) * 2009-10-13 2010-07-21 上海化工研究院 Electrolytic tank employing electrolytic water to produce hydrogen gas
WO2012070468A1 (en) * 2010-11-22 2012-05-31 三菱重工環境・化学エンジニアリング株式会社 Seawater electrolysis system and seawater electrolysis method
CN207512264U (en) * 2017-11-06 2018-06-19 山西大同大学 A kind of device for preparing hydrogen
CN108486596A (en) * 2018-06-02 2018-09-04 南通安思卓新能源有限公司 A kind of wind-powered electricity generation water electrolysis hydrogen production system
CN110791774B (en) * 2018-08-02 2021-04-13 国家能源投资集团有限责任公司 Method for producing hydrogen by electrolyzing water vapor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8940151B1 (en) * 2011-10-31 2015-01-27 Advanced Hydrogen Products, LLC Water electrolysis systems and methods

Also Published As

Publication number Publication date
CN113403630A (en) 2021-09-17

Similar Documents

Publication Publication Date Title
CN113403630B (en) Hydrogen producing device by catalytic electrolysis
Millet et al. Water electrolysis technologies
US20180371630A1 (en) High pressure electrochemical cell
CN102191511B (en) Portable water electrolysis oxygenerator
EP2551380A1 (en) Electrochemical device
CN101514462A (en) Ultra-pure water membrane electrolyser
NL2023775B1 (en) Compact electrochemical stack using corrugated electrodes
WO2020162772A1 (en) Electrolyzer for hydrogen and oxygen production
JPWO2004092059A1 (en) Fuel for fuel cell, fuel cell and power generation method using the same
CN108258267A (en) A kind of acid cathode-alkali anode low temperature alcohol fuel battery
CN101967651B (en) Self-breathing electrochemical oxygen generator
CN102677082A (en) Portable energy saving water electrolysis oxygen-making device
CN216427428U (en) Bipolar plate and solid oxide electrolytic cell stack
CN1065005C (en) Process of electrochemical oxygen generation by cathode and its oxygen generating box
CN212323036U (en) Environment-friendly composite battery
CN212085141U (en) Novel fuel cell system, power generation system and electric vehicle
KR20140133301A (en) The membrane electrdoe assembly for an electrochemical cell
JP4838879B2 (en) Water electrolysis equipment
CN218291133U (en) Electrolysis device
CN219195151U (en) Built-in electrode multi-row pipe isolating membrane electrolysis equipment
JP3239354U (en) Electrocatalytic discharge reactor and hydrogen production system
CN218989415U (en) PEM water electrolytic tank
CN219342319U (en) Laminated ozone water generator
CN216237301U (en) Efficient proton exchange membrane electrolytic cell
CN214088686U (en) Composite titanium electrode group of sodium hypochlorite generator

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant