CN113862690B - Water electrolysis hydrogen production device based on bipolar electrode system - Google Patents

Water electrolysis hydrogen production device based on bipolar electrode system Download PDF

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Publication number
CN113862690B
CN113862690B CN202111044964.2A CN202111044964A CN113862690B CN 113862690 B CN113862690 B CN 113862690B CN 202111044964 A CN202111044964 A CN 202111044964A CN 113862690 B CN113862690 B CN 113862690B
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electrode
hydrogen
bipolar electrode
oxygen
chamber
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CN113862690A (en
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陈长伦
何建波
丁军
赵梦杰
陈秋远
项婷
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Institute of Energy of Hefei Comprehensive National Science Center
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Institute of Energy of Hefei Comprehensive National Science Center
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    • 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
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C25B15/023—Measuring, analysing or testing during electrolytic production
    • 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
    • C25B9/30—Cells comprising movable electrodes, e.g. rotary electrodes; Assemblies of constructional parts thereof
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/133—Renewable energy sources, e.g. sunlight

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

Abstract

The invention discloses a device for producing hydrogen by electrolyzing water based on a bipolar electrode system, and relates to the fields of water electrolysis technology and hydrogen energy. The invention comprises three electrodes: a hydrogen evolving cathode, an oxygen evolving anode, and a bipolar electrode. The bipolar electrode is arranged in the middle of the electrolytic bath to completely separate alkali liquor in the electrolytic bath to form a cathode hydrogen evolution chamber and an anode oxygen evolution chamber, so that hydrogen and oxygen are completely separated. The bipolar electrode is made of foamed nickel and doped cobalt, and the nickel surface in the alkaline solution is subjected to anodic oxidation to generate Ni (OH) 2 A coating of NiOOH oxide. When water is electrolyzed, ni (OH) is generated on the surface of nickel opposite to hydrogen evolution 2 The anode reaction to NiOOH and the cathode reaction opposite to the surface of nickel with oxygen evolution occur in a reverse direction, namely, an integral double-sided bipolar. The bipolar electrode is connected with the intelligent switching control mechanism, and the two sides of the bipolar electrode are switched in an interval edge changing mode or a continuous rotating mode, so that the electrolysis process is continuously carried out. The invention adopts a metal to replace an ion diaphragm, completes hydrogen production and oxygen production in different chambers synchronously, reduces the isolation cost and improves the efficiency.

Description

Hydrogen production device based on bipolar electrode system by electrolyzing water
Technical Field
The invention belongs to the technical field of water electrolysis, and particularly relates to a hydrogen production device based on a bipolar electrode system for electrolyzing water.
Background
The energy is an important material basis for developing national economy and improving the quality of life of people, is an important restriction factor directly influencing economic development, and is also one of the bases of national strategic safety guarantee. In order to solve the increasingly severe contradiction between economic development and energy shortage and environmental pollution, the development of a clean, efficient and sustainable new energy power technology becomes a very urgent task. The development of renewable energy sources and the clean and efficient utilization of the energy sources are important practical problems in the current international society and have great significance on the sustainable development of the economy of the whole world. Hydrogen energy has received wide attention worldwide as a highly efficient, clean and desirable secondary energy source. The large-scale and cheap production of hydrogen is one of the important links for developing and utilizing hydrogen energy.
For example, chinese publication No. CN105734600B discloses a device and a method for producing hydrogen by electrolyzing water by a two-step method in a three-electrode system double-electrolytic cell. The electrolysis device comprises two independent electrolysis baths (bath-1 and bath-2), a hydrogen evolution catalytic electrode, an oxygen evolution catalytic electrode, a nickel hydroxide electrode and an alkaline electrolyte. The electrolysis device divides the water electrolysis process into two steps of hydrogen production and oxygen production, and the two steps are respectively and alternately carried out in two electrolysis baths (bath-1 and bath-2); the production of hydrogen and oxygen can not be carried out simultaneously, and the production efficiency is slow.
Disclosure of Invention
The invention aims to provide a water electrolysis hydrogen production device based on a bipolar electrode system, which adopts a metal to replace an ion diaphragm to completely separate alkali liquor in an electrolytic cell, takes foamed nickel, co-doped materials and other materials as bipolar electrodes, and synchronously completes hydrogen production and oxygen production in different chambers through the arrangement of movable electrodes switched by two electrode ends, reduces the isolation cost, and improves the production efficiency and the safety.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a hydrogen production device based on bipolar electrode system electrolytic water, which comprises an electrolytic bath: a metal partition board is arranged in the electrolytic cell and is divided into an anode oxygen evolution chamber and a cathode hydrogen evolution chamber through the partition board;
three electrodes: a hydrogen evolution catalytic electrode having a catalytic effect on the generation of hydrogen gas from the electrolyzed water, an oxygen evolution catalytic electrode having a catalytic effect on the generation of oxygen gas from the electrolyzed water, and a bipolar electrode;
alkaline electrolyte: oxygen production in the anodic oxygen evolution chamber and hydrogen production in the cathodic hydrogen evolution chamber; the bipolar electrode is a movable electrode which can switch two electrode ends positioned in the anode oxygen evolution chamber and the cathode hydrogen evolution chamber; the bipolar electrode is connected with an electrode control switching mechanism which controls two electrode ends of the bipolar electrode to be switched and inserted into the anode oxygen evolution chamber and the cathode hydrogen evolution chamber.
Further, the bipolar electrode is of a cylindrical structure; the separator is provided with a channel which is matched with the bipolar electrode and is vertically arranged; the top of the bipolar electrode is connected with the electrode control switching mechanism, and the electrode control switching mechanism comprises a rotating motor A and a processor which are electrically connected; the bipolar electrode is made of foamed nickel and doped cobalt, and the nickel surface in the alkali liquor is subjected to anodic oxidation to generate Ni (OH) 2 A NiOOH oxide cap layer.
Further, the bipolar electrode comprises a U-shaped electrode body, wherein the U-shaped electrode body is provided with a first electrode section and a second electrode section which can be respectively inserted into the anode oxygen evolution chamber and the cathode hydrogen evolution chamber; the first electrode section and the second electrode section are both foamed nickel, and the surface of nickel in alkali liquor is subjected to anodic oxidation to generate a Ni (OH) 2/NiOOH oxide covering layer; the end part of the U-shaped electrode body is connected with the electrode control switching mechanism, the electrode control switching mechanism comprises an insulating substrate and a processor, the insulating substrate is connected with the U-shaped electrode body, the insulating substrate is connected with an electric telescopic mechanism, and the end part of the electric telescopic mechanism is connected with a rotating motor B; the device also comprises an L-shaped bracket arranged at one side of the junction of the anode oxygen evolution chamber and the cathode hydrogen evolution chamber, and the rotating motor B is arranged on the L-shaped bracket; and the processor is respectively connected with the electric telescopic mechanism and the rotating motor B.
The electrode material of the hydrogen evolution catalytic electrode is as follows: based on metallic platinum and its complexes with carbon; or a simple substance or compound based on a transition metal of Ni, co or Fe; or a Cu-based compound; or a W-based compound; a Mo-based compound; the electrode material of the oxygen evolution catalytic electrode is as follows: compounds based on Ru or Ir noble metals; or a simple substance or compound based on a transition metal of Ni, co, fe or Mn; the alkaline electrolyte solution is selected from potassium hydroxide, sodium hydroxide and other alkaline aqueous solutions.
Further, outlets of an oxygen collector and a hydrogen collector are respectively arranged on the anode oxygen evolution chamber and the cathode hydrogen evolution chamber; and the oxygen collector and/or the hydrogen collector are/is connected with a flow sensor for detecting gas flow, and the flow sensor is connected with the processor.
The bottom of the anode oxygen evolution chamber and the bottom of the cathode hydrogen evolution chamber are both provided with an alkali liquor inlet, the alkali liquor inlet is communicated with a liquor inlet system, the liquor inlet system comprises a liquor inlet pump communicated with the alkali liquor inlet, and the liquor inlet pump is arranged in the alkali liquor tank.
The invention has the following beneficial effects:
according to the invention, through the arrangement of the movable electrodes for switching the two electrode ends and the intelligent switching of the electrode ends in the electrolysis process, hydrogen production and oxygen production in different spaces in one device system can be completed simultaneously, and the overall production efficiency is improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a water electrolysis hydrogen production device according to the present invention;
FIG. 2 is a schematic structural diagram II of a water electrolysis hydrogen production device of the present invention;
FIG. 3 is a schematic view of the structure of a nickel hydroxide electrode according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship merely to facilitate description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced components or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be construed as limiting the invention.
Referring to fig. 1-2, the invention relates to a device for producing hydrogen by electrolyzing water based on a bipolar electrode system, comprising an electrolytic tank, which is divided into an anode oxygen evolution chamber 1 and a cathode hydrogen evolution chamber 2 by a metal; three electrodes: a hydrogen evolution catalytic electrode 21 having a catalytic effect on hydrogen generated by electrolyzed water, an oxygen evolution catalytic electrode 11 having a catalytic effect on oxygen generated by electrolyzed water, a bipolar electrode made of materials such as foamed nickel and doped Co, and the like, and 3; alkaline electrolyte: oxygen generation in the anodic oxygen evolution chamber 1 and hydrogen generation in the cathodic hydrogen evolution chamber 2; the foam nickel and cobalt-doped bipolar electrode 3 is a movable electrode which can switch two electrode ends positioned in the anode oxygen evolution chamber 1 and the cathode hydrogen evolution chamber 2; the bipolar electrode 3 is connected with an electrode control switching mechanism which controls two electrode ends of the bipolar electrode 3 to be switched and inserted into the anode oxygen precipitation chamber 1 and the cathode hydrogen precipitation chamber 2; the material of the hydrogen evolution catalytic electrode 21 is Co 2 O 3 The material of the oxygen evolution catalytic electrode 11 is RuO 2 。
And the hydrogen evolution catalytic electrode 21 and the oxygen evolution catalytic electrode 11 are respectively connected with the anode and the cathode of a power supply.
In the cathodic hydrogen evolution chamber 2:
water molecules are electrochemically reduced to hydrogen gas, i.e. H, on the surface of the hydrogen evolution catalytic electrode 21 as cathode 2 O +e-→1/2H 2 +OH - (ii) a Ni (OH) as anode at the same time 2 The electrode is electrochemically oxidized to a NiOOH electrode, i.e. Ni (OH) 2 +OH - －e-→NiOOH+H 2 O, ni (OH) in the cathodic hydrogen evolution chamber 2 2 Almost completely oxidized into NiOOH, and the NiOOH electrode formed in the cathodic hydrogen evolution chamber 2 is transferred to the anodeAn oxygen evolution chamber 1 for electrolyzing water to generate oxygen;
in the anodic oxygen evolution chamber 1:
the NiOOH electrode as cathode is electrochemically reduced to Ni (OH) 2 Electrodes, i.e. NiOOH + H 2 O +e-→Ni(OH) 2 +OH - (ii) a Meanwhile, the hydroxide ions are electrochemically oxidized into oxygen gas, namely 2OH, on the surface of the oxygen evolution catalytic electrode 11 serving as an anode - －2e-→1/2O 2 +H 2 O; when NiOOH is reduced to Ni (OH) in the anodic oxygen evolution chamber 1 2 Ni (OH) formed in the anodic oxygen evolution chamber 1 2 The electrode is transferred to a cathode hydrogen evolution chamber 2 and is used for electrolyzing water to produce hydrogen;
example 2, based on example 1;
as shown in fig. 2 and 3, a partition plate 4 is communicated between the anode oxygen evolution chamber 1 and the cathode hydrogen evolution chamber 2, and the bipolar electrode 3 is of a cylindrical structure; the separator 4 is provided with a channel 41 which is matched with the bipolar electrode 3 and is vertically arranged; the top of the bipolar electrode 3 is connected with an electrode control switching mechanism, and the electrode control switching mechanism comprises a rotating motor A and a processor which are electrically connected.
The bipolar electrode 3 comprises an insulating partition plate 31 positioned in the middle, electrode rods 32 with semicircular sections are respectively arranged on two sides of the insulating partition plate 31, and the two electrode rods 32 are made of foamed nickel, doped Co and the like; the top of the insulating partition plate 31 is provided with an installation plate 33 connected with a rotating motor A; the tops of the two electrode rods 32 are electrically connected; a conductive structure 34 penetrating through the insulating partition plate 31 is arranged on the insulating partition plate 31 right below the mounting plate 33, two ends of the conductive structure 34 are respectively connected with the conductive structures 34 of the two electrode rods 32, and the conductive structures 34 are made of materials such as foamed nickel and doped Co; a pair of sealing flanges 35 which can be in sealing fit with the channel 41 are respectively arranged on two sides of the insulating partition plate 31, the two sealing flanges 35 positioned on the same side of the insulating partition plate 31 are symmetrically arranged, and the sealing flanges 35 are arc-shaped.
When the device is used, the bipolar electrode 3 is arranged in a columnar shape, so that the bipolar electrode 3 can be adjusted to rotate at any time according to requirements in the water electrolysis process, and the two electrode ends of the bipolar electrode 3 are placed into the anode oxygen evolution chamber 1 and the cathode hydrogen evolution chamber 2 in a switching manner, so that the oxidation and reduction reactions are carried out in a circulating manner.
Example 3, based on example 1;
as shown in figure 1, ni (OH) 2 The NiOOH bipolar electrode 3 comprises a U-shaped electrode body 301, the U-shaped electrode body 301 is provided with a first electrode section 302 and a second electrode section 303 which can be respectively inserted into the anode oxygen evolution chamber 1 and the cathode hydrogen evolution chamber 2, and the first electrode section 302 and the second electrode section 303 are both made of foamed nickel, doped Co and other materials; the end part of the U-shaped electrode body 301 is connected with an electrode control switching mechanism, the electrode control switching mechanism comprises an insulating substrate 5 connected with the U-shaped electrode body 301 and a processor, the insulating substrate 5 is connected with an electric telescopic mechanism 51, and the end part of the electric telescopic mechanism 51 is connected with a rotating motor B53; the device also comprises an L-shaped bracket 54 arranged at one side of the junction of the anode oxygen evolution chamber 1 and the cathode hydrogen evolution chamber 2, and a rotating motor B53 is arranged on the L-shaped bracket 54; and the processor is respectively connected with the electric telescopic mechanism 51 and the rotating motor B53.
Example 4, based on examples 1-3;
as shown in fig. 1 and 2, the anode oxygen-separating chamber 1 and the cathode hydrogen-separating chamber 2 are respectively provided with an outlet of an oxygen collector and an outlet of a hydrogen collector; and the oxygen collector and/or the hydrogen collector are/is connected with a flow sensor for detecting the gas flow, and the flow sensor is connected with the processor. The flow sensor is used for detecting the flow of gas to judge the electrolysis speed, so that the surface oxidation reduction degree of the bipolar electrode 3 positioned in the anode oxygen evolution chamber 1 and the cathode hydrogen evolution chamber 2 is judged, the two electrode ends of the bipolar electrode 3 are conveniently and timely switched into the anode oxygen evolution chamber 1 and the cathode hydrogen evolution chamber 2, and the electrolysis speed is prevented from being influenced by the self condition of the bipolar electrode 3.
Example 5, based on examples 1-3;
the bottom of the anode oxygen evolution chamber 1 and the bottom of the cathode hydrogen evolution chamber 2 are both provided with an alkali liquor inlet 7, the alkali liquor inlet 7 is communicated with a liquor inlet system, the liquor inlet system comprises a liquor inlet pump communicated with the alkali liquor inlet 7, and the liquor inlet pump is arranged in an alkali liquor tank.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (2)

1. A hydrogen plant is produced to electrolysis water based on bipolar electrode system which characterized in that: comprises that
An electrolytic cell: a metal partition plate (4) is arranged in the hydrogen generating device and is separated by the partition plate (4) to form an anode oxygen evolution chamber (1) and a cathode hydrogen evolution chamber (2);
three electrodes: a hydrogen evolution catalytic electrode (21) having a catalytic action on the generation of hydrogen gas by the electrolysis of water, an oxygen evolution catalytic electrode (11) having a catalytic action on the generation of oxygen gas by the electrolysis of water, and a bipolar electrode (3);
alkaline electrolyte: oxygen production in the anodic oxygen evolution chamber (1) and hydrogen production in the cathodic hydrogen evolution chamber (2); the bipolar electrode (3) is a movable electrode which can switch two electrode ends positioned in the anode oxygen evolution chamber (1) and the cathode hydrogen evolution chamber (2);
the bipolar electrode (3) is connected with an electrode control switching mechanism which controls two electrode ends of the bipolar electrode (3) to be switched and inserted into the anode oxygen precipitation chamber (1) and the cathode hydrogen precipitation chamber (2); the bipolar electrode (3) is of a cylindrical structure; the separator (4) is provided with a channel (41) which is matched with the bipolar electrode (3) and is vertically arranged;
the top of the bipolar electrode (3) is connected with the electrode control switching mechanism, and the electrode control switching mechanism comprises a rotating motor A and a processor which are electrically connected; the bipolar electrode (3) is made of foam nickel and doped cobalt, and the nickel surface in the alkali liquor is subjected to anodic oxidation to generate Ni (OH) 2 A NiOOH oxide cap layer.
2. The device for producing hydrogen by electrolyzing water based on bipolar electrode system in accordance with claim 1, wherein the bipolar electrode (3) is replaced by a U-shaped electrode body (301), the U-shaped electrode body (301) has a first electrode segment (302) and a second electrode segment (303) which can be inserted into the anodic oxygen evolution chamber (1) and the cathodic hydrogen evolution chamber (2), respectively;
the first electrode section (302) and the second electrode section (303) are both foamed nickel and cobalt-doped, and the surface of nickel in the alkali liquor is subjected to anodic oxidation to generate Ni (OH) 2 A NiOOH oxide cap layer;
the end part of the U-shaped electrode body (301) is connected with the electrode control switching mechanism, the electrode control switching mechanism comprises an insulating substrate (5) connected with the U-shaped electrode body (301) and a processor, an electric telescopic mechanism (51) is connected to the insulating substrate (5), and the end part of the electric telescopic mechanism (51) is connected with a rotating motor B (53);
the device also comprises an L-shaped bracket (54) arranged at one side of the junction of the anode oxygen evolution chamber (1) and the cathode hydrogen evolution chamber (2), and the rotating motor B (53) is arranged on the L-shaped bracket (54);
and the processor is respectively connected with an electric telescopic mechanism (51) and a rotating motor B (53).
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CN114525530A (en) * 2022-02-24 2022-05-24 合肥综合性国家科学中心能源研究院(安徽省能源实验室) Method and device for producing hydrogen by electrolyzing water through unloaded liquid flow
CN115029717A (en) * 2022-07-18 2022-09-09 中国华能集团清洁能源技术研究院有限公司 Membrane-free water electrolysis hydrogen production device based on rotary bipolar electrode
CN116623205B (en) * 2023-06-01 2024-02-23 深圳市图灵科创产业发展有限公司 Electrolytic tank for producing hydrogen by water electrolysis and preparation method of cathode electrode for producing hydrogen by water electrolysis

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