CN105908212A - SPE electrolytic cell module with composite flow field and method therewith for producing hydrogen by electrolyzing water - Google Patents
SPE electrolytic cell module with composite flow field and method therewith for producing hydrogen by electrolyzing water Download PDFInfo
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- CN105908212A CN105908212A CN201610247777.7A CN201610247777A CN105908212A CN 105908212 A CN105908212 A CN 105908212A CN 201610247777 A CN201610247777 A CN 201610247777A CN 105908212 A CN105908212 A CN 105908212A
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- bipolar plate
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- diffusion layer
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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
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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
- 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
- C25B9/73—Assemblies comprising two or more cells of the filter-press type
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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
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
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- 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 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 discloses an SPE electrolytic cell module with a composite flow field, which is produced by assembling an anode bipolar plate, an anode diffusion layer, an anode catalytic layer, a proton exchange membrane, a cathode catalytic layer, a cathode diffusion layer and a cathode bipolar plate. An anode bipolar plate flow path is etched on a surface, which is connected to the anode diffusion layer, of the anode bipolar plate. A pure water inlet and a water oxygen outlet are disposed in the anode bipolar plate flow path. A cathode bipolar plate flow path is etched on a surface, which is connected to the cathode diffusion layer, of the cathode bipolar plate. A hydrogen gas outlet is disposed in the cathode bipolar plate flow path. Each of the anode bipolar plate flow path and the cathode bipolar plate flow path is composed of a composite flow path which includes not less than five sections in a manner of folded connection from top to bottom successively to form a snake-shaped path. A fluid flows in the snake-shaped path. A cylinder group, which is designed in a dot matrix structure, is disposed at each of a front end and a back end of each section of the flow path. The middle part of each section of the flow path is a parallel flow path ridge. The SPE electrolytic cell module greatly improves pure water diffusion performance and oxygen discharge capability of the anode bipolar plate, is low in pressure drop along the path, has high flow path area and has high work efficiency of a membrane electrode.
Description
Technical field
The present invention relates to chemical industry and nuclear technology and apparatus field, particularly relate to a kind of SPE electrolyzer using combined type flow field
Module and the method for electrolyzing pure water thereof.
Background technology
Hydrogen is a kind of eco-friendly energy carrier, has cleaning, pollution-free and reproducible advantage.Natural gas steam reformation,
Water gas hydrogen manufacturing and preparing hydrogen by reforming methanol and water electrolysis hydrogen producing are all the methods of current industrialization hydrogen manufacturing.Comparatively speaking, water electrolysis system
Hydrogen raw material is water, inexhaustible, and product is also water, reusable edible；Meanwhile, water electrolysis hydrogen producing also has product hydrogen
Purity is high, the advantage of flexible operation.Therefore, the SPE electrolysis mode of water electrolysis especially electrolyzing pure water, not only transformation efficiency high,
Internal resistance is little, and hydrogen is difficult to reverse osmosis, thus has broad application prospects, and the utilization for following Hydrogen Energy has very important
Effect.
SPE electrolysis also plays great effect in tritium-containing liquid waste goes tritiated process.Nuclear power station running can produce and give up containing tritium
Water, if can not rationally dispose, it will cause serious environmental pollution；Meanwhile, containing the recovery of tritium in HTO, there is the highest warp
Ji is worth, thus exploitation is efficient, the water of environmental protection goes tritiated technology and equipment to have very important significance.And SPE is electrolysed at water
Remove tritiated application also has clear superiority, such as: (1) SPE film has hydrogen isotope effect, T+Permeable membrane ability is much smaller than
H+So that tritium, while producing lean hydrogen tritide gas, is concentrated in liquid phase by SPE electrolysis；(2) SPE film has excellent Flouride-resistani acid phesphatase
Performance, current existing electrolysis-catalytic exchange water goes tritiated technique (CECE), by SPE electrolysis and hydrogen isotope catalytic exchange
Technique couples, and has and the highest goes the tritium factor.
In SPE electrolyzer, bipolar plate flow field is for providing flow channel for reactant and product, and flow passage structure affects fluid
Flowing in runner and the transmission of reacting substance, and then have influence on the work efficiency of electrolyzer.Common bipolar plate runner has flat
Row runner, serpentine flow path and interdigitated runner.Parallel fluid channels significant advantage is that fluid stagnation pressure reduces, but along with flow field width increases,
In runner, fluid distrbution is uneven, causes the enrichment of anode bipolar plate oxygen, increases flow loss.Serpentine flow path exhaust capacity is strong,
But along with flow area increases, fluid-pressure drop significantly increases.Interdigitated runner is also called discontinuous runner, and row's band ability is strong, electricity
Pond power density is high, but very big by diffusion layer pressure drop, and is susceptible to the situation of short circuit and channel.
In sum, develop efficient bipolar plate flow field, promote SPE electrolyzer module work efficiency, for SPE electrolysis tech
Development and the application such as water hydrogen all there is vital meaning.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the invention provides and use the SPE electrolyzer module in combined type flow field and be electrolysed pure
The method of water, the problem that can effectively solve anode bipolar plate deoxygenation, the least along journey pressure drop, flow area is big, and membrane electrode works
Efficiency is high.
For achieving the above object, the technical solution used in the present invention is as follows:
Use the SPE electrolyzer module in combined type flow field, including being sequentially overlapped the anode bipolar plate of assembling, anode diffusion layer, sun
Pole Catalytic Layer, PEM, cathode catalysis layer, cathode diffusion layer and cathode bipolar plate；Described anode bipolar plate jointed anode
Be carved with on the surface of diffusion layer in anode bipolar plate runner, and this bipolar plate runner be respectively equipped with pure water be passed through mouth and water oxygen outlet；
It is carved with cathode bipolar plate runner on the surface of described cathode bipolar plate connection cathode diffusion layer, and this bipolar plate runner is provided only with hydrogen
Outlet.
Further, anode seal circle it is additionally provided with between described anode bipolar plate and anode diffusion layer.
Yet further, negative electrode sealing ring it is additionally provided with between described cathode bipolar plate and cathode diffusion layer.
Specifically, described anode bipolar plate runner and minus plate bipolar plate runner by no less than the compound runner of five foldings from upper past
Under successively bending connect and compose, formed fluid flowing serpentine channel；Often before and after the compound runner of folding, two ends are equipped with in point-like square
The Cylinder Group of battle array structure design, and, it is distributed in staggered mode and by compound runner often rolling over to be equipped with in the middle part of compound runner
It is divided into the parallel fluid channels ridge of N bar parallel fluid channels from top to bottom, is equipped with for connecting between 4≤N, and adjacent parallel fluid channels ridge
Adjacent two parallel fluid channels are so that balance is combined the fluid pressure in runner and the openings of flow velocity；Meanwhile, described combined-flow
From top to bottom, the bar number of its parallel fluid channels successively decreases successively according to the mode of equal difference in road.
Further, on described anode bipolar plate runner, described pure water is passed through mouth and is arranged on the top in this bipolar plate runner
The end of compound runner；Described water oxygen outlet is arranged on the end of the compound runner of bottom in this bipolar plate runner.
Further, on described cathode bipolar plate runner, described hydrogen outlet is arranged on bottom in this bipolar plate runner
The end of compound runner.
As preferably, in anode bipolar plate runner and cathode bipolar plate runner, other in addition to bottommost one folding is combined runner are multiple
Bottom parallel fluid channels in road, interflow, its width is all wide than other parallel fluid channels by 50%；Meanwhile, in the compound runner of bottommost
The width of all parallel fluid channels all identical with the bottom parallel fluid channels width in other compound runners.
Further, during often folding is combined runner, the end for making fluid turn to is equipped with the rounded corner that smoothly transits.
As preferably, the Cylinder Group in point-like matrix structure is that the staggered mode in 60 ° of angles is distributed.
Based on said structure, the method that present invention also offers this SPE electrolyzer module water electrolysis hydrogen production gas, comprise the following steps:
(1) pure water bipolar plate runner in anode bipolar plate contacts generation oxygen through anode diffusion layer with anode catalyst layer；
(2) oxygen is in anode diffusion layer returns anode bipolar plate runner, draws from the outlet of water oxygen together with the water not being electrolysed；And
Proton is then through PEM, and is reduced to hydrogen under the effect of cathode catalysis layer, the then runner on cathode bipolar plate
Draw at hydrogen outlet after enrichment.
Compared with prior art, the method have the advantages that
(1) the SPE electrolyzer module of present invention design is not only electrolysed hydrogen purity height (>=99.999%), and can be effective
Reduce ohmic loss, there is the advantage that required voltage is little, electric current density big, operational heat amount is few, electrolytic efficiency is high.
(2) present invention greatly improves pure water diffusion and anode bipolar plate deoxygenation ability, its not only little along journey pressure drop, stream
Road area is big, and membrane electrode work efficiency is high.
(3) present invention is designed by the structure improving bipolar plate runner, is provided with the Serpentis being made up of the compound runner of many foldings thereon
Shape passage, and the Cylinder Group of point-like matrix structure is set in compound runner, thus improve liquid phase carrier gas ability, solve
Fluid is the problem of exhaust problem in SPE electrolyzer module.
(4) in the point-like matrix of bipolar plate runner of the present invention, Cylinder Group is that the staggered mode in 60 ° of angles is distributed, and so can increase
Flow area, balances flowpath pressure and velocity flow profile, adds the wettability of membrane electrode.
(5) the bar number of the parallel fluid channels in the compound runner of bipolar plate runner of the present invention uses equal difference to successively decrease design, journey stream after runner
Speed increases the ability that improve anode bipolar plate carrier band oxygen, and after improving, stroke pressure advantageously ensures that liquid phase diffusivity simultaneously, carries
Rise membrane electrode work efficiency.And often the parallel fluid channels of the compound runner bottom of folding and bottom are combined all parallel fluid channels of runner
Other parallel fluid channels of width ratio wide by 50%, can make flow field velocity distribution more uniform.
(6) present invention end for making fluid turn in often rolling over compound runner is equipped with the rounded corner that smoothly transits, can be further
Reduction fluid, along journey pressure drop, advantageously in runner respectively to uniform distribution fluid, reduces dead band, flow field.
(7) present invention is reasonable in design, electrolysis hydrogen ability is strong, has the highest practical value and promotional value.
Accompanying drawing explanation
Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of the present invention.
Fig. 2 is the structural representation of bipolar plate runner in the present invention.
Fig. 3 is a kind of enforcement schematic diagram that the present invention prepares hydrogen.
Fig. 4 be bipolar plate runner of the present invention, serpentine flow path and parallel fluid channels flow field in pressure, the contrast of velocity flow profile
Schematic diagram.
Wherein, corresponding entitled of reference:
1-Cylinder Group, 2-parallel fluid channels ridge, 3-parallel fluid channels, 4-openings, 5-smoothly transits rounded corner, 6-anode bipolar plate,
7-anode seal circle, 8-anode diffusion layer, 9-anode catalyst layer, 10-PEM, 11-cathode catalysis layer, 12-negative electrode spreads
Layer, 13-negative electrode sealing ring, 14-cathode bipolar plate, 15-bipolar plate runner, 16-pure water water tank, 17-dosing pump, 18-unidirectional current
Source, 19-knockout drum, 20-water temporary storage tank, 21-circulating pump, 22-oxygen exsiccator, 23-oxygen storage tank, 24-hydrogen is done
Dry device, 25-hydrogen storage tank.
Detailed description of the invention
The invention will be further described with embodiment in explanation below in conjunction with the accompanying drawings, and the mode of the present invention includes but are not limited to following
Embodiment.
As it is shown in figure 1, the invention provides a kind of novel SPE electrolyzer module, which employs combined type flow field.The present invention
Including being sequentially overlapped the anode bipolar plate 6 of assembling, anode diffusion layer 8, PEM 10, cathode catalysis layer 11, negative electrode expansion
Dissipate layer 12 and cathode bipolar plate 14.It is carved with anode bipolar plate runner 15 in described anode bipolar plate 6, and described negative electrode is double
Then it is carved with cathode bipolar plate runner on pole plate 14, wherein, anode bipolar plate runner is respectively equipped with a pure water and is passed through mouth and water oxygen
Outlet, and cathode bipolar plate runner is provided only with a hydrogen outlet.Diffusion layer, Catalytic Layer and PEM constituting membrane electrode group
Part, is the core component of SPE electrolyzer module.
Additionally, the present invention is also respectively provided with anode seal circle 7 and negative electrode sealing ring 13, wherein, anode seal circle 7 is positioned at sun
Between pole bipolar plates 6 and anode diffusion layer 8；Negative electrode sealing ring 13 is between cathode diffusion layer 12 and cathode bipolar plate 14.
So can ensure the sealing of SPE electrolyzer module.In the present embodiment, the preferred high resiliency of sealing ring, corrosion resistant silicone rubber are close
Seal, thickness preferably 0.5～1mm, sealing ring dashpot can be set in bipolar plates simultaneously, agree with sealing ring.
In above-mentioned parts, described anode bipolar plate 6 and cathode bipolar plate 14 all preferably employ titanium alloy or other corrosion resisting alloys
The rustless steel carrying out surface process is made.Anode diffusion layer 8 uses surface to carry out plating the stainless (steel) wire that tantalum processes, cathode diffusion layer
12 preferred sintered porous titaniums, it is ensured that permeability and durability.Described anode catalyst layer 9 uses IrO2Catalyst, cathode catalysis layer
11 use the black catalyst of Pt, and negative electrode and anode catalyst layer are all respectively coated with in PEM 10 both sides, this matter through spraying coating process
Proton exchange 10 is as transmission H+Medium, use perfluoro sulfonic acid membrane, the preferred E.I.Du Pont Company of the present embodiment produce Nafion 111
Film.
And as another main improvement of the present invention, as in figure 2 it is shown, in the present embodiment, described bipolar plate runner include by
Bend the most successively no less than the compound runner of five foldings (the present embodiment uses five foldings) and connect and compose, for fluid (pure water)
The serpentine channel flowed wherein.Often before and after the compound runner (degree of depth is 1.2～2.0mm) of folding, two ends are equipped with in point-like matrix
The Cylinder Group 1 (Cylinder Group in matrix is that the staggered mode in 60 ° of angles is distributed, body diameter 2mm) of structure design, and
And, often roll on compound runner and be equipped with between the Cylinder Group of two ends be distributed in staggered mode and by compound runner by
On be down divided into the parallel fluid channels ridge 2 (width is 1.5～2.0mm) of N bar parallel fluid channels 3, meanwhile, adjacent parallel fluid channels
It is equipped with between ridge for connecting adjacent two parallel fluid channels to balance the fluid pressure and the openings of flow velocity being combined in runner
4。
Additionally, described compound runner is from top to bottom, the bar number of its parallel fluid channels successively decreases successively according to the mode of equal difference, this enforcement
In example, the compound runner of the top has 8 parallel fluid channels, compound runner equal difference successively down to successively decrease a parallel fluid channels, i.e.
The compound runner of bottom has 4 parallel fluid channels.Further, in anode bipolar plate runner and cathode bipolar plate runner, the end is removed
Bottom parallel fluid channels in other compound runners that portion one folding is combined outside runner, its width is all wide than other parallel fluid channels by 50%；
Meanwhile, the width of all parallel fluid channels in the compound runner of bottommost all with the bottom parallel fluid channels width in other compound runners
Spend identical.
Further, since have employed the design structure of serpentine channel, during for reducing runner break-in along journey pressure drop, the often compound runner of folding
In be equipped with, for the end that makes fluid turn to, the rounded corner 5 that smoothly transits.
Fig. 3 is that the present invention is electrolysed water and prepares a kind of of hydrogen and implement system structure, in this system, going out of described pure water water tank 16
Pure water in the bipolar plate runner in dosing pump 17 jointed anode bipolar plates 6 of the mouth of a river is passed through mouth, the water inlet of pure water water tank 16
Then connect the pump discharge of circulating pump 21, and be also associated with valve between pure water water tank and circulating pump 21.
Water oxygen outlet in bipolar plate runner in described anode bipolar plate 6 connects knockout drum 19, this knockout drum 19
Outlet is connected with water temporary storage tank 20 water inlet, and gas outlet is connected with oxygen exsiccator 22, oxygen exsiccator 22 and oxygen storage
Tank 23 connects；Water temporary storage tank 20 outlet then pump intake with circulating pump 21 is connected, in order to circular treatment.
The hydrogen outlet in bipolar plate runner on described cathode bipolar plate 14 is connected with hydrogen dryer 24, this hydrogen dryer
24 are connected with hydrogen storage tank 25.
Described DC source 18 then positive pole accesses anode bipolar plate 6, and negative pole accesses anode bipolar plate 14.
According to said system structure, its process preparing hydrogen (uses pure water as flow media) as follows:
(1) raw water is introduced the bipolar plate runner in anode bipolar plate by dosing pump；
(2) connecting DC source, anode-side switches on power positive pole, and cathode side switches on power negative pole；
(3) water bipolar plate runner in anode bipolar plate contacts generation oxygen through anode diffusion layer with anode catalyst layer；
(4) oxygen is in anode diffusion layer returns anode bipolar plate runner, draws from the outlet of water oxygen together with the water not being electrolysed；And
Proton then through PEM, is reduced to hydrogen, then the bipolar plate current on cathode bipolar plate under cathode catalysis layer effect
Draw at hydrogen outlet after road enrichment；
(5) hydrogen drawn stores after drying in hydrogen storage tank；Water oxygen two-phase mixture then separates through knockout drum,
Obtaining water and oxygen, oxygen enters oxygen storage tank after drying, and water then enters water temporary storage tank and keeps in, then via circulating pump
It is pumped in pure water water tank, continues cycling through above-mentioned steps.
Fig. 4 compared for pressure and the distribution of flow velocity in serpentine flow path, parallel fluid channels and combined dual-polar plate runner of the present invention.
Wherein (a), (c), (e) are respectively the pressure distribution in three of the above runner；B (), (d), (f) are respectively in three kinds of runners
Velocity flow profile.Working media all uses room temperature pure water, and channel size specification is consistent, takes identical water treating capacity.Result of calculation
Showing that in combined dual-polar plate flow field of the present invention, fluid is little along journey pressure drop, flow area is big, and velocity flow profile evenly, can
To be obviously improved the work efficiency of SPE electrolyzer module.
Above-described embodiment is only one of the preferred embodiment of the present invention, should not be taken to limit protection scope of the present invention, all
The body design thought of the present invention and the change having no essential meaning made mentally or polishing, it is solved the technical problem that still
The most consistent with the present invention, within all should being included in protection scope of the present invention.
Claims (10)
1. use the SPE electrolyzer module in combined type flow field, it is characterised in that include the anode bipolar plate being sequentially overlapped assembling
(6), anode diffusion layer (8), anode catalyst layer (9), PEM (10), cathode catalysis layer (11), negative electrode
Diffusion layer (12) and cathode bipolar plate (14)；Carve on the surface of described anode bipolar plate (6) jointed anode diffusion layer (8)
There is an anode bipolar plate runner (15), and this bipolar plate runner is respectively equipped with pure water is passed through mouth and the outlet of water oxygen；Described negative electrode is double
It is carved with in cathode bipolar plate runner, and this bipolar plate runner on the surface of pole plate (14) connection cathode diffusion layer (12) and is provided with hydrogen
Gas exports.
The SPE electrolyzer module in employing combined type flow field the most according to claim 1, it is characterised in that described anode
Anode seal circle (7) it is additionally provided with between bipolar plates (6) and anode diffusion layer (8).
The SPE electrolyzer module in employing combined type flow field the most according to claim 2, it is characterised in that described negative electrode
Negative electrode sealing ring (13) it is additionally provided with between bipolar plates (14) and cathode diffusion layer (12).
The SPE electrolyzer module in employing combined type flow field the most according to claim 3, it is characterised in that described anode
Bipolar plate runner and minus plate bipolar plate runner are bent the most successively by the compound runner no less than five foldings and connect and compose, shape
Become the serpentine channel of fluid flowing；Often before and after the compound runner of folding, two ends are equipped with the Cylinder Group of design in point-like matrix structure
(1), and, it is distributed in staggered mode often rolling over to be equipped with in the middle part of compound runner and compound runner is divided into N from top to bottom
The parallel fluid channels ridge (2) of bar parallel fluid channels (3), is equipped with for connecting adjacent between 4≤N, and adjacent parallel fluid channels ridge
Article two, parallel fluid channels is so that balance is combined the fluid pressure in runner and the openings (4) of flow velocity；Meanwhile, described combined-flow
From top to bottom, the bar number of its parallel fluid channels successively decreases successively according to the mode of equal difference in road.
The SPE electrolyzer module in employing combined type flow field the most according to claim 4, it is characterised in that described anode
On bipolar plate runner, described pure water is passed through mouth and is arranged on the end of the compound runner of the top in this bipolar plate runner；Described
The outlet of water oxygen is arranged on the end of the compound runner of bottom in this bipolar plate runner.
The SPE electrolyzer module in employing combined type flow field the most according to claim 5, it is characterised in that described negative electrode
On bipolar plate runner, described hydrogen outlet is arranged on the end of the compound runner of bottom in this bipolar plate runner.
The SPE electrolyzer module in employing combined type flow field the most according to claim 6, it is characterised in that double at anode
The bottom concurrent flow in other compound runners in polar plate flow passage and cathode bipolar plate runner, in addition to bottommost one folding is combined runner
Road, its width is all wide than other parallel fluid channels by 50%；Meanwhile, the width of all parallel fluid channels in the compound runner of bottommost is equal
Identical with the bottom parallel fluid channels width in other compound runners.
The SPE electrolyzer module in employing combined type flow field the most according to claim 7, it is characterised in that often folding is compound
In runner, the end for making fluid turn to is equipped with the rounded corner that smoothly transits (5).
9. according to the SPE electrolyzer module in the employing combined type flow field described in any one of claim 4～8, it is characterised in that
The mode that Cylinder Group (1) in point-like matrix structure interlocks in 60 ° of angles is distributed.
10. the method for a SPE electrolyzer module water electrolysis hydrogen production gas, it is characterised in that comprise the following steps:
(1) pure water bipolar plate runner in anode bipolar plate contacts generation oxygen through anode diffusion layer with anode catalyst layer；
(2) oxygen is in anode diffusion layer returns anode bipolar plate runner, draws from the outlet of water oxygen together with the water not being electrolysed；
Proton is then through PEM, and is reduced to hydrogen under the effect of cathode catalysis layer, the then stream on cathode bipolar plate
Draw at hydrogen outlet after road enrichment.
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| CN110129818A (en) * | 2019-05-30 | 2019-08-16 | 武汉理工大学 | Proton exchange membrane water electrolyzer slot |
| CN110424024A (en) * | 2019-08-02 | 2019-11-08 | 华南理工大学 | It is a kind of to have both water supply and cooling difunctional pole plate and flow field for pure water SPE water electrolyzer |
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| CN117468024A (en) * | 2023-10-31 | 2024-01-30 | 温州高企氢能科技有限公司 | Array flow field structure for producing hydrogen by alkaline water electrolysis and electrolytic tank |
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