CN114232004A - Water electrolysis cell with integrated electrolysis cells - Google Patents
Water electrolysis cell with integrated electrolysis cells Download PDFInfo
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- CN114232004A CN114232004A CN202111284028.9A CN202111284028A CN114232004A CN 114232004 A CN114232004 A CN 114232004A CN 202111284028 A CN202111284028 A CN 202111284028A CN 114232004 A CN114232004 A CN 114232004A
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- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 56
- 239000012528 membrane Substances 0.000 claims abstract description 29
- 238000003825 pressing Methods 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 229920005597 polymer membrane Polymers 0.000 claims abstract description 6
- 229920006254 polymer film Polymers 0.000 claims abstract description 5
- 239000003792 electrolyte Substances 0.000 claims description 20
- 239000006185 dispersion Substances 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 18
- 239000001257 hydrogen Substances 0.000 abstract description 17
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 238000005265 energy consumption Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- 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
-
- 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
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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)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention relates to the technical field of hydrogen production by water electrolysis, and discloses a water electrolysis electrolytic cell with an integrated electrolytic cell, which comprises a positive end pressing plate, a negative end pressing plate and a plurality of electrolytic cells; the electrolysis cell comprises a pole frame and a membrane electrode; the membrane electrode comprises a polymer membrane, a negative electrode and a positive electrode; the polymer film is positioned between the cathode electrode and the anode electrode and is jointed with the cathode electrode and the anode electrode into a whole; the small electrolytic chambers are separated by bipolar plates; a plurality of electrolysis cells are located between the positive end platen and the negative end platen. According to the invention, the diaphragm and the electrode are tightly attached and integrated through the integrated electrolytic cell structure, namely the polymer film, the cathode electrode and the anode electrode are tightly attached and integrated, so that the problem of assembly complexity of the hydrogen production electrolytic cell is solved; and the double-flow channel liquid inlet and O-shaped sealing ring structure is adopted, so that the problems of unbalanced heat dissipation of the electrolytic cell and poor system sealing are solved, the stable operation of the system is higher, and the system pressure and the hydrogen production yield of the electrolytic cell are improved.
Description
Technical Field
The invention relates to the technical field of hydrogen production by water electrolysis, in particular to a water electrolysis electrolytic cell with an integrated electrolytic cell.
Background
At present, in the assembly process of the hydroelectric hydrogen production electrolytic cell, a diaphragm and a motor are mostly in a separated structure, the diaphragm and the motor need to be tightly attached layer by layer during assembly, then a bipolar plate is installed, and after all electrolytic cells are assembled, an installation end pressing plate is fastened.
The existing structure of the small electrolytic cells stacked layer upon layer is generally provided with a plurality of limiting holes on a bipolar plate, a sealing gasket and a polar frame in order to ensure the accurate installation position and the good air tightness of an electrolytic tank, and the accurate positioning and sealing are carried out through a tensioning screw rod, but the mode has the following defects: (1) the assembly of a plurality of small electrolytic cells depends on the position limiting holes of the bipolar plate, the sealing gasket and the polar frame, so that the complete alignment of the positions is difficult to ensure, and the size of the limiting hole is slightly larger than the outer diameter of the tensioning screw rod, so that slight position deviation is difficult to avoid; (2) the installation of the electrolytic cell is complicated, the assembly of the electrolytic cell is manually completed, and the membranes and the electrodes are respectively and independently installed, so that the installation complexity is increased, and the installation efficiency is also influenced; (3) the membrane and the electrode respectively generate relative displacement in the independent structure assembling process, so that the excellent contact between the membrane and the electrode after installation is difficult to ensure, the contact resistance between the electrode and the membrane is increased, the energy consumption of a system is increased, and the current density is reduced under the same voltage; (4) the installation of the multi-layer sealing ring can not ensure the good contact sealing of each part, and the end pressing plate needs to be installed by a large pulling force, after long-term use, the pressure resistance is reduced, and the sealing material can not be used for the second time.
Disclosure of Invention
The invention mainly aims to provide a water electrolysis electrolytic cell with an integrated electrolytic cell, aiming at solving the technical problems of complex structure and inconvenient installation of the existing water electrolysis electrolytic cell.
In order to achieve the above object, the present invention provides a water electrolysis cell with an integrated electrolysis cell, comprising a positive end pressing plate, a negative end pressing plate and a plurality of electrolysis cells;
the electrolysis cell comprises a pole frame and a membrane electrode;
the membrane electrode comprises a polymer membrane, a cathode electrode and an anode electrode; the polymer film is positioned between the cathode electrode and the anode electrode and is jointed with the cathode electrode and the anode electrode into a whole;
the small electrolytic cells are separated by bipolar plates;
the plurality of electrolysis cells are located between the positive end clamp and the negative end clamp.
Optionally, the pole frame is of an annular structure, and the pole frame is provided with an O-shaped sealing ring groove;
the polar frame comprises a first side surface and a second side surface, the O-shaped sealing ring grooves comprise a first O-shaped sealing ring groove and a second O-shaped sealing ring groove, the first O-shaped sealing ring groove is formed in the first side surface, and the second O-shaped sealing ring groove is formed in the second side surface;
the first side surface and the second side surface are both provided with an electrolyte inlet and an air outlet.
Optionally, the outer edge of the polar frame is provided with a fixing pin, the bipolar plate is provided with a through hole matched with the fixing pin, and the fixing pin is used for clamping the polar frame and the bipolar plate.
Optionally, the O-ring further includes a third O-ring, and the inner edge of the pole frame is provided with the third O-ring groove and the filling electrode groove from inside to outside, respectively.
Optionally, the first side surface and the second side surface of the pole frame are both provided with a dispersion flow channel, and the dispersion flow channels respectively correspond to the electrolyte inlets to form liquid flow channels.
Optionally, a layer of polar plate is arranged on the inner sides of the positive end pressing plate and the negative end pressing plate and is respectively used as the anode and the cathode of the electrolytic cell, and the outer sides of the polar plates are connected with a direct current power supply.
Optionally, positioning holes are formed in the outer sides of the pole frames, and the positive end pressing plate, the pole frames and the negative end pressing plate are connected through fasteners; the pole frame is positioned between the positive end pressing plate and the negative end pressing plate.
Optionally, the fastener is a screw rod, and the screw rod is wrapped by an insulating sleeve.
In the technical scheme provided by the invention, the diaphragm and the electrode are tightly attached and integrated through the integrated electrolytic cell structure, namely the polymer film, the cathode electrode and the anode electrode are tightly attached and integrated, so that the problem of assembly complexity of the hydrogen production electrolytic cell is solved; and the double-flow channel liquid inlet and O-shaped sealing ring structure is adopted, so that the problems of unbalanced heat dissipation of the electrolytic cell and poor system sealing are solved, the stable operation of the system is higher, and the system pressure and the hydrogen production yield of the electrolytic cell are improved.
Drawings
One or more embodiments are illustrated in drawings corresponding to, and not limiting to, the embodiments, in which elements having the same reference number designation may be represented as similar elements, unless specifically noted, the drawings in the figures are not to scale.
FIG. 1 is a schematic view of an electrode frame of a water electrolysis cell having an integrated electrolysis cell according to the present invention;
FIG. 2 is a schematic view of a water electrolysis cell retaining pin with an integrated electrolysis cell according to the present invention;
FIG. 3 is a schematic representation of a water electrolysis cell plate and bipolar plate with integrated electrolysis cells according to the present invention;
FIG. 4 is a schematic view of an end press plate of a water electrolysis cell with integrated electrolysis cells according to the present invention.
Reference numerals: 1. a pole frame; 2. a fixing pin; 3. an O-shaped sealing ring groove; 4. a hydrogen outlet; 5. an oxygen outlet; 6. a dispersion flow channel; 7. filling the electrode groove; 8. a membrane electrode; 9. an electrolyte inlet; 10. positioning pins; 11. the inner edge of the pole frame; 12. a negative end pressure plate; 13. tensioning the bolt hole; 14. a positive end pressure plate; 15. a polar plate; 16. a fixing pin hole; 17. a power connection; 18. a bipolar plate.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.
Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
As shown in FIGS. 1 to 4, a water electrolysis cell with integrated electrolysis cells according to the present invention comprises a positive end plate 14, a negative end plate 12, and a plurality of electrolysis cells; the electrolysis chamber comprises a polar frame 1 and a membrane electrode 8; the membrane electrode 8 comprises a polymer membrane, a cathode electrode and an anode electrode, wherein the polymer membrane is positioned between the cathode electrode and the anode electrode and is bonded with the cathode electrode and the anode electrode into a whole; the cells are separated by bipolar plates 18; the positive end pressure plate 14 and the negative end pressure plate 12 are located at the two ends of the plurality of electrolysis cells, respectively.
Specifically, the membrane electrode 8 includes a middle polymer membrane and two sides of the membrane, and is bonded along the outer edge side by a special adhesive to form a whole. The inner sides of the positive end pressing plate 14 and the negative end pressing plate 12 are respectively provided with a layer of polar plate 15 which is respectively used as the anode and the cathode of the electrolytic cell. The plate 15 is connected to a DC power supply and carries only one charge, providing the positive and negative poles of the power supply to the cells, while the bipolar plate 18 carries two charges on both sides, providing the positive and negative poles to two adjacent cells. The integrated small electrolytic cell has the advantages that the sealing performance is good, the structure is stable, meanwhile, the integral installation complexity and difficulty of the electrolytic cell are reduced, the labor cost generated by the electrolytic cell industry is saved, the air tightness and poor electrode contact factors caused by assembly positioning errors of the membrane and the electrode are reduced, and the energy consumption of the electrolytic cell is correspondingly reduced.
Further, in an embodiment, the pole frame 1 is an annular structure, and the pole frame 1 is provided with an O-ring groove 3; the polar frame 1 comprises a first side surface and a second side surface, and the O-shaped sealing ring groove 3 comprises a first O-shaped sealing ring groove and a second O-shaped sealing ring groove, wherein the first O-shaped sealing ring groove is formed in the first side surface, and the second O-shaped sealing ring groove is formed in the second side surface; the first side surface and the second side surface are both provided with an electrolyte inlet 9 and an air outlet.
Specifically, the O-ring groove 3 is used for sealing the O-ring, wherein the O-ring groove 3 is adapted to the O-ring. The electrolyte inlets 9 are respectively arranged at the lower parts of two sides (the first side is a hydrogen side, and the second side is an oxygen side) of the pole frame 1, and the gas outlets (the first side is a hydrogen gas outlet, and the second side is an oxygen gas outlet) are arranged at the upper parts of two sides of the pole frame 1 and are used as escape channels of hydrogen and oxygen. Wherein, the hydrogen outlet 4 is communicated with the hydrogen side electrolyte inlet 9, and the oxygen outlet is communicated with the oxygen side electrolyte inlet 9.
Further, in the embodiment, the outer edge of the polar frame 1 is provided with a fixing pin 2, the bipolar plate 18 is provided with a through hole matched with the fixing pin 2, and the fixing pin 2 is used for clamping the polar frame 1 and the bipolar plate 18. The inner edge of the pole frame 1 is respectively provided with a third O-shaped sealing ring groove and a filling electrode groove 7 from inside to outside.
Specifically, the number of the fixing pins 2 is four, the fixing pins are used for fixing the bipolar plate 18 and are uniformly distributed on the outer edge of the polar frame 1, the bipolar plate 18 is provided with four fixing pin holes 16 at opposite positions, the fixing pins 2 are inserted into the fixing pin holes 16 and then are fixed in a rotating mode, and the fixing pin holes 16 are through holes. The filling electrode groove 7 and the third O-shaped sealing ring groove form two steps of the inner edge 11 of the polar frame, wherein the height of the step of the filling electrode groove 7 is higher than that of the third O-shaped sealing ring groove, and in addition, the size and the shape of the bipolar plate 18 are consistent with those of the polar frame 1; a filling electrode and a membrane electrode 8 are arranged between the polar frame 1 and the bipolar plate 18; the filler electrode further ensures that the membrane electrode 8 is in full contact with the bipolar plate 18, and facilitates the flow of electrolyte and heat dissipation inside the cell.
The O-shaped sealing ring grooves 3 are of four sizes and are used for sealing the O-shaped sealing rings, and the O-shaped sealing rings are arranged between the bipolar plate 18 and the polar frame 1, between the integrated membrane electrode 8 and the polar frame 1 and between the end pressing plate and the polar plate 15; the first O-shaped sealing ring groove and the second O-shaped sealing ring groove are used for installing the sealing of the corresponding O-shaped sealing rings between the bipolar plate 18 and the polar frame 1; the third O-ring groove is used for installing the seal of the corresponding O-ring between the membrane electrode 8 and the polar frame 1.
In addition, the O-shaped sealing ring groove 3 is used for filling an O-shaped sealing ring, the sealing between the polar frame 1 and the bipolar plate 18 is ensured through extrusion, and the membrane electrode 8 is also in close contact with a third O-shaped sealing ring groove on the inner edge of the polar frame 1. Two steps from inside to outside on the inner edge of the pole frame 1 are a third O-shaped sealing ring groove and a filling electrode groove 7 which are respectively used for installing a membrane electrode 8 and a filling electrode, the step height of the filling electrode groove 7 is higher than the groove height of the third O-shaped sealing ring groove, and the outer radius of the third O-shaped sealing ring groove is smaller than the diameter of the integrated membrane electrode 8.
Further, in the present embodiment, the first side surface and the second side surface of the pole frame 1 are provided with the dispersion flow channels 6, and the dispersion flow channels 6 respectively correspond to the electrolyte inlets 9 to form liquid flow channels.
Specifically, because the two sides of the pole frame 1 are both provided with an electrolyte inlet 9, the electrolyte enters through the two sides of the integrated membrane electrode 8 at the same time, the electrolyte inlets 9 are respectively connected with the dispersing flow channel 6, the dispersing flow channel 6 is arranged on the inner side of the pole frame 1 and is directly contacted with the integrated membrane electrode 8, wherein the hydrogen outlet 4 is communicated with the electrolyte inlet 9 on the hydrogen side, and the oxygen outlet 5 is communicated with the electrolyte inlet 9 on the oxygen side. The dispersion flow path 6 of the first side, i.e., the hydrogen side, and the electrolyte inlet 9 form a liquid flow path; the dispersion flow channel 6 of the second side, i.e. the oxygen side, forms a liquid flow channel with the electrolyte inlet 9.
At this time, the bipolar plate 18 side of the one integrated bipolar plate 18 and the frame 1 and the other integrated bipolar plate 18 side form one electrolytic cell by the positioning pin 10, and further, a filler electrode is installed to form a second electrolytic cell. After all the electrolytic cells are installed, the positive and negative poles of the direct current power supply are connected through the power supply limits on the pole plates 15 at the two ends, and each pole plate 15 is provided with a wiring. Wherein, the inner sides of the positive end pressing plate 14 and the negative end pressing plate 12 are respectively provided with a layer of polar plate 15 which is respectively used as the anode and the cathode of the electrolytic cell, and the outer sides of the polar plates 15 are connected with a direct current power supply. The positive and negative poles of the direct current power supply are connected through power supply boundaries on the polar plates 15 at the two ends. The plate 15 is connected to a dc power source and carries only one charge, providing the positive and negative poles of the power source to the cells, while the bipolar plate 18 carries two charges on either side, providing the positive and negative poles to two adjacent cells.
In addition, the outer sides of the pole frames 1 are provided with positioning holes, the positive end pressure plate 14, the pole frames 1 and the negative pressure plate are connected through fasteners, and the pole frames 1 are positioned between the positive end pressure plate 14 and the negative end pressure plate; the fastener is a screw rod, and the screw rod is wrapped by an insulating sleeve.
Specifically, the polar plates 15 at the two ends of the electrolytic cell are respectively in close contact with the positive end pressing plate 14 and the negative end pressing plate 12, and 12 screws penetrate through the tensioning bolt holes 13 to tension and fix all the electrolytic cells of the electrolytic cell. Furthermore, the tensioning screw rod is sleeved with an insulating sleeve, is insulated from the insulating groove, only passes through the tensioning screw rod holes of the positive terminal pressure plate 12 and the negative terminal pressure plate 12, and positions and clamps all the pole frames 1 along the arc notches at the outer sides of the pole frames 1. Electrolyte, hydrogen and oxygen outlets 5 also enter and escape through the end clamps.
The specific assembling process of the electrolytic cell comprises the following steps: firstly, assembling a pole frame 1 and a membrane electrode 8, installing an O-shaped sealing ring with the specification corresponding to that of a third O-shaped sealing ring groove on the inner edge 11 of the pole frame, horizontally placing the membrane electrode 8 on the upper part of the O-shaped sealing ring to enable the membrane electrode 8 to completely cover the outer diameter of the sealing ring, installing a filling electrode with a certain thickness in a filling electrode groove 7 on the outer side, wherein the filling electrode is slightly higher than the thickness of the pole frame 1, and installing two O-shaped sealing rings with different specifications on the outermost side of the pole frame 1; then the fixed pin 2 of the pole frame 1 is aligned with the fixed pin hole 16 on the outer side of the bipolar plate 18 to be rotationally clamped, and the filling electrode on the inner side is fully extruded; finally, the other side of the electrode frame 1 is filled with electrodes and is in contact with the other electrode frame 1 to form the positive electrode and the negative electrode of the electrolytic cell.
After all the electrolytic cells are installed, the positive and negative poles of the direct current power supply are connected through the power supply wiring 17 on the pole plates 15 at the two ends, and the pole plates are provided with a wiring.
The fixing pin 2 is of an irregular structure, protrudes outwards to form a wrapping type hanger, and is connected with the fixing pin hole 16 to rotationally lock the bipolar plate 18; the O-shaped sealing rings are distributed on the inner side of the pole frame 1, the electrolyte inlet 9 and the gas flow channel and used for sealing and isolating oxyhydrogen gas, and the outer diameter of each sealing ring is slightly larger than the diameter of the groove so as to clamp the sealing ring. In fig. 2, a denotes the fixing pin 2 as viewed from the front, and B denotes the fixing pin 2 as viewed from the side.
The integrated small electrolytic cell has the advantages that the integrated small electrolytic cell is good in sealing performance and stable in structure, meanwhile, the overall installation complexity and difficulty of the electrolytic cell are reduced, the labor cost of the industrial production of the electrolytic cell is saved, the air tightness and poor electrode contact factors caused by assembly positioning errors of the membrane and the electrode are reduced, the energy consumption of the electrolytic cell is correspondingly reduced, meanwhile, the O-shaped linear seal increases the system pressure and the hydrogen production yield of the electrolytic cell, and better economic benefits are brought.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A water electrolysis cell with an integrated electrolysis cell, characterized in that the water electrolysis cell with an integrated electrolysis cell comprises a positive end pressing plate, a negative end pressing plate and a plurality of electrolysis cells;
the electrolysis cell comprises a pole frame and a membrane electrode;
the membrane electrode comprises a polymer membrane, a cathode electrode and an anode electrode; the polymer film is positioned between the cathode electrode and the anode electrode and is jointed with the cathode electrode and the anode electrode into a whole;
the small electrolytic cells are separated by bipolar plates;
the plurality of electrolysis cells are located between the positive end clamp and the negative end clamp.
2. The water electrolysis cell with integrated electrolysis cell of claim 1, wherein said frame is of annular configuration, said frame being provided with O-ring grooves;
the polar frame comprises a first side surface and a second side surface, the O-shaped sealing ring grooves comprise a first O-shaped sealing ring groove and a second O-shaped sealing ring groove, the first O-shaped sealing ring groove is formed in the first side surface, and the second O-shaped sealing ring groove is formed in the second side surface;
the first side surface and the second side surface are both provided with an electrolyte inlet and an air outlet.
3. The electrolyzer of claim 2 characterized in that the outer edges of the frames are provided with fixing pins and the bipolar plates are provided with through holes matching the fixing pins, the fixing pins are used to clamp the frames and the bipolar plates.
4. The water electrolysis cell with integrated electrolysis cell according to claim 3, wherein said O-ring further comprises a third O-ring, and said third O-ring groove and said filled electrode groove are respectively provided from inside to outside along the inner edge of said frame.
5. The electrolytic cell of claim 4, wherein the first and second sides of the frame are provided with dispersion channels, and the dispersion channels are respectively corresponding to the electrolyte inlet to form liquid channels.
6. The water electrolysis cell with integrated electrolysis cell as claimed in claim 5, wherein the inner sides of said positive and negative end pressing plates are provided with a layer of polar plate respectively as the anode and cathode of the cell, and the outer sides of said polar plates are connected with a DC power supply.
7. The water electrolysis cell with an integrated electrolysis cell according to claim 1, wherein the outside of the pole frame is provided with positioning holes, and the positive end pressing plate, the pole frame and the negative end pressing plate are connected by fasteners; the pole frame is positioned between the positive end pressing plate and the negative end pressing plate.
8. The water electrolysis cell with integrated electrolysis cell of claim 7, wherein said fastener is a threaded rod, said threaded rod being externally wrapped with an insulating sleeve.
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| CN202111284028.9A CN114232004A (en) | 2021-11-01 | 2021-11-01 | Water electrolysis cell with integrated electrolysis cells |
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| CN202111284028.9A CN114232004A (en) | 2021-11-01 | 2021-11-01 | Water electrolysis cell with integrated electrolysis cells |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT526232B1 (en) * | 2023-05-17 | 2024-01-15 | Andritz Ag Maschf | Electrolysis cell and electrolysis device with an electrolysis cell |
| WO2024078362A1 (en) * | 2022-10-12 | 2024-04-18 | 无锡隆基氢能科技有限公司 | Bipolar plate and electrolytic cell |
| WO2024098910A1 (en) * | 2022-11-09 | 2024-05-16 | 嘉庚创新实验室 | Electrolytic bath pole frame for hydrogen production from water electrolysis and electrolytic bath |
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| CN113430551A (en) * | 2021-07-22 | 2021-09-24 | 北京中电丰业技术开发有限公司 | Water electrolysis electrolytic tank with annular structure |
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Cited By (4)
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| WO2024078362A1 (en) * | 2022-10-12 | 2024-04-18 | 无锡隆基氢能科技有限公司 | Bipolar plate and electrolytic cell |
| WO2024098910A1 (en) * | 2022-11-09 | 2024-05-16 | 嘉庚创新实验室 | Electrolytic bath pole frame for hydrogen production from water electrolysis and electrolytic bath |
| AT526232B1 (en) * | 2023-05-17 | 2024-01-15 | Andritz Ag Maschf | Electrolysis cell and electrolysis device with an electrolysis cell |
| AT526232A4 (en) * | 2023-05-17 | 2024-01-15 | Andritz Ag Maschf | Electrolysis cell and electrolysis device with an electrolysis cell |
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