CN110424024A - It is a kind of to have both water supply and cooling difunctional pole plate and flow field for pure water SPE water electrolyzer - Google Patents
It is a kind of to have both water supply and cooling difunctional pole plate and flow field for pure water SPE water electrolyzer Download PDFInfo
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- CN110424024A CN110424024A CN201910713672.XA CN201910713672A CN110424024A CN 110424024 A CN110424024 A CN 110424024A CN 201910713672 A CN201910713672 A CN 201910713672A CN 110424024 A CN110424024 A CN 110424024A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 4
- 239000010439 graphite Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 3
- 230000004888 barrier function Effects 0.000 claims description 6
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 14
- 239000001257 hydrogen Substances 0.000 abstract description 14
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 14
- 239000012528 membrane Substances 0.000 abstract description 9
- 238000005868 electrolysis reaction Methods 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005404 monopole Effects 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
-
- 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
- C25B11/03—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form perforated or foraminous
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Water supply and cooling difunctional pole plate and flow field are had both for pure water SPE water electrolyzer the invention discloses a kind of.Plate material selects graphite plate or metal plate, anode flow field design uses single track or multiple tracks serpentine flow, the fluid introducing port of every flow field channel from anode is snakelike to anode export, when fluid passes through, fluid is covered with entire anode surface along serpentine channel, come into full contact with water electrolyzer plate fluid with membrane electrode, reach stable water supply, so that electrolysis is stablized, while realizing effective cooling of electrode.Cathode is designed using palisading type parallel channel, and the hydrogen of generation can quickly be discharged from cathode outlet and take away partial heat.Fixing groove is arranged in pole plate edge, is conveniently used for the assembling of pole plate and membrane electrode and the extension of water electrolyzer.Using this pole plate and the SPE water electrolyzer in flow field, under same current density, the electrolysis performance of water electrolyzer can be significantly improved, realizes effective control of temperature.
Description
Technical field
The present invention relates to pure water solid polymer electrolyte (SPE) electrolytic hydrogen production technical fields, are specifically related to a kind of use
Water supply and cooling difunctional pole plate and flow field are had both in pure water SPE water electrolyzer.
Background technique
Pure water SPE electrolytic hydrogen production technology refers to that pure water is electrolysed the technology for generating hydrogen in water electrolyzer.It is solid due to using
Body polymer film is as electrolyte, it is therefore not necessary to add alkali or acid as electrolyte.Catalyst is usually bonded in solid
The tow sides of polymer dielectric constitute the anode and cathode of electrode.Membrane electrode is placed in two pieces of pole plates (anode and cathode)
Between, be powered i.e. decomposable water, obtains hydrogen in cathode, obtains oxygen in anode.
During electrolyzing pure water, pure water can uniform each region for being sufficiently supplied to electrode, for mentioning
The efficiency of high water electrolyzer and the long-life of realization electrode are extremely important；Meanwhile by the circulation of anode-side pure water be also realize
Electrode and the effectively cooling effective way with battery temperature control of battery.
Sufficient supply, membrane electrode and the effective of pure water that the pole plate and flow Field Design of water electrolyzer directly affect pure water connect
Touching, the timely discharge and effective cooling of water electrolyzer of oxygen and hydrogen, to influence the electrolysis performance of water electrolyzer.Usually exist
It needs to meet following requirement in pole plate and flow Field Design:
1 pure water inlet and outlet have lesser pressure drop, can reduce the performance requirement to water electrolyzer peripheral equipment, effectively reduce energy
Consumption, the liquid pump that such as power can be selected small.
2 water electrolyzer pole plates and flow field are in plate flow field, cathode plate flow field, anode flow field import, anode flow field
Outlet, the flow field channel of cathode flow field outlet are rationally distributed, not only can achieve stable water supply and electrolysis is stablized, but also may be implemented
Effective cooling of electrode, prevents electrode temperature excessively high and damages.
The pole plate of 3 water electrolyzers and the hydrogen gas side in flow field and oxygen side will be isolated, the hydrogen or oxygen gas mixing prevented, In
Guarantee SPE water electrolyzer it is safe while, and can guarantee the purity of hydrogen.
The pole plate of 4 water electrolyzers and flow field will guarantee the independence of each pole plate, can according to need and increase and decrease pole
Overall structure performance of the quantity of plate without influencing water electrolyzer.
In the case where there is mass air flow generation, current pole plate and flow Field Design usually cannot be guaranteed pure water in electrode table
Face being uniformly distributed and being sufficiently fed, so that " blank area " occurs in electrode surface, seriously reduces the electrolysis of electrode and electrolytic cell
Efficiency.On the other hand, the water flow of current electrolyzer Anodic side usually also plays the part of the role of cooling medium, passes through the circulation of water
Take the heat in electrolytic cell out of, and in current flow Field Design, water flow cannot flow evenly through entire electrode, a large amount of be detained occur
Area, prevent electrode causes electrolytic cell performance to decline from obtaining uniform effective cooling.
105839136 A of Chinese invention patent discloses a kind of radial bipolar plates of Central Symmetric for SPE electrolysis
Flow field structure, still, in the case where there is bulk gas generation, gas cannot be timely and effectively discharged in this flow field；Gas
Occupy-place hinders pure water being uniformly distributed in electrode surface, is formed " blank area ", and then influences effective heat dissipation of electrode.Chinese invention
Patent 103806014A can improve flow field heat dissipation using improved parallel flow field bend design, but equally exist due to generating
Gas cannot be discharged in time and cause pure water cannot equally distributed defect in electrode surface.
Summary of the invention
For deficiency existing for existing flow field, the present invention proposes to have both water supply and cooling for pure water SPE water electrolyzer
Difunctional pole plate and flow field.
This clearly demarcated technical solution is as follows.
Anodic flow Field Design of the present invention uses single track or multiple tracks serpentine channel flow Field Design, and every flow field channel is from sun
Pole fluid introducing port serpentine extends to anode export, and when fluid passes through, fluid is covered with entire anode table along serpentine channel
Face makes water electrolyzer anode fluid and membrane electrode anode come into full contact with carry out cell reaction, realizes to supply water and stablize, takes away simultaneously
The heat generated in electrolytic process prevents electrode hot-spot, realizes effective cooling of electrode, to keep water electrolyzer electrolysis steady
It is fixed.Cathode is designed using palisading type parallel channel, and the hydrogen of generation cracking can be discharged from cathode outlet, while take away part electricity
Solve the heat generated.
A kind of to have both water supply and cooling difunctional pole plate and flow field for pure water SPE water electrolyzer, pole plate is monopole
Plate or bipolar plates (i.e. one side is anode, and another side is cathode)；Plate material is stainless steel, titanium plate or graphite plate；Pole plate
Surface includes: anode cathode flow field, fluid introducing port, anode export, cathode outlet sealing surface and fixed screw holes；The anode
Cathode flow field includes anode flow field and cathode flow field；Anode fluid has both the supply of electrolysis raw material (water) and cooling (passes through fluid
Take the heat generated in electrolytic cell out of) function, anode flow field using single channel or multichannel serpentine design；Cathode flow field
It is designed using barrier formula；Pole plate whole design is circle, and pole plate edge is provided with fixed screw holes, and polar board surface is except design flow field
Outside, it is also provided with fluid introducing port, anode export, cathode outlet, the flow field is set to the middle part of the pole plate tow sides, institute
Anode fluid introducing port, anode export are stated set on the both sides of anode flow field, is symmetric, the cathode outlet is set to cathode pole
Edges of boards side is dislocatedly distributed with anode fluid introducing port, anode export；The anode export is connected by interface channel and anode flow field
It connects, the cathode outlet is connect by interface channel with cathode flow field.
Further, the anode flow field runs through whole using single track or multiple tracks universe serpentine design, each channel
A pole plate, it is ensured that in the case where bulk gas is generated to the effective supply of the raw water of membrane electrode, and to Anode
At amount of heat effective removal.
Further, the cathode flow field uses barrier formula flow Field Design, it can be ensured that and the hydrogen of generation can be discharged in time,
And take away partial heat.
Further, the cathode outlet is set to one end of the parallel palisading type groove of the cathode flow field, while and anode
Inlet and outlet are presented and are dislocatedly distributed.Cathode outlet and anode fluid introducing port, anode export pass through pole plate sealing element interval.
Further, the plate fluid flow fields, the cathode plate fluid flow fields are set to the two sides of the pole plate.
By the pole plate designed above and flow field, it is used for pure water SPE water electrolyzer, has to supply water and stablize, may be implemented pair
Effective control of temperature, so that the overall performance of pure water SPE water electrolyzer is stablized.
It also has the advantage that simultaneously
1. pure water inlet and outlet have lesser pressure drop, the performance requirement to water electrolyzer peripheral equipment is reduced, can effectively be reduced
Energy consumption；
2. the hydrogen and oxygen of generation can be effectively isolated, guarantee the safety of SPE water electrolyzer, while also ensuring output hydrogen
Purity.
3. with convenient and fast expandability: the independence in pole plate and flow field designs the convenient extension that ensure that water electrolyzer
Property, it can according to need, easily increase or decrease overall structure performance of the quantity of pole plate without influencing water electrolyzer.
4. anode-side water supply is stable and uniform, hydrogen is uniformly produced for electrode, guarantee is provided；Dead angle is not present in water flowing, can have
Effect equably cools down electrode.
Detailed description of the invention:
Fig. 1 is a kind of pole plate and flow field for taking into account water supply and cooling difunctional pure water SPE water electrolyzer of the invention
Assembling schematic diagram；
Fig. 2 is a kind of pole plate and flow field for taking into account water supply and cooling difunctional pure water SPE water electrolyzer of the invention
Decomposition diagram,
Fig. 3 is a kind of pole plate and flow field for taking into account water supply and cooling difunctional pure water SPE water electrolyzer of the invention
Anode flow field schematic diagram；
Fig. 4 is a kind of pole plate and flow field for taking into account water supply and cooling difunctional pure water SPE water electrolyzer of the invention
Cathode flow field schematic diagram.
All parts are as follows in figure: anode unipolar plate 1, sealing element 2, membrane electrode 3, bipolar plate electrode 4, cathode unipolar plate
5。
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing, and embodiments of the present invention are not limited thereto.
A kind of pole plate and flow field (anode and cathode for taking into account water supply and cooling down difunctional pure water SPE water electrolyzer
Flow field figure is respectively referring to attached drawing 3 and attached drawing 4), and the water electrolyzer (assembling made of pole plate of the invention and flow field assembling
Figure and exploded view are respectively referring to attached drawing 1 and attached drawing 2).
Graphite, stainless steel and titanium plate production can be used in pole plate.For unipolar plate, " fluid importing is set on plate
Hole ", " anode export " and " fixed screw holes " for pile assembling, and the design processing " anode flow field " on pole plate side；
" cathode outlet " and " fixed screw holes " is set on cathode plate, and the design processing " cathode flow field " on pole plate side；For
Bipolar plates, in addition on pole plate be arranged " fluid introduction hole ", " anode export ", " cathode outlet " and for pile assembling " Gu
Determine screw hole " outside, it is also necessary to anode flow field and cathode flow field are separately designed and processed on the two sides of pole plate；
Fig. 3 is that (anode flow field can also be for snakelike single channel plate and flow field schematic diagram in addition to that can be single channel serpentine flow
Parallel multichannel serpentine flow).Pole plate shape is designed as round (being not limited to circle), apart from pole plate boundary 5-6mm for being arranged
" fluid introduction hole ", " anode export " and " fixed screw holes " (i.e. pole plate boundary 5-6mm is not provided with flow field), the fluid of anode is led
Entrance and anode export are set to the both sides of pole plate, are symmetric, while being symmetrical arranged " fixed screw holes " 10.Flow Field Design
It is hit exactly in pole plate, chute width is 2mm, and chute depth is 2mm, rib width 1.5mm, and the slot rib of " anode flow field " is than about 4;3;
Anode fluid introducing port, anode export are connected to by groove, and runner wriggles always from anode fluid introducing port extends to outlet；Electricity
When Xie Chi works, pure water can be evenly supplied the entire active region of membrane electrode, realize the efficient water supply of electrolytic cell and effective cold
But；
Fig. 4 is the schematic diagram of cathode plate and flow field, and cathode does not design fluid introducing port without importing fluid.Pole plate shape
Shape is designed as round (being not limited to circle), apart from pole plate boundary 5-6mm for " cathode outlet " and " fixed screw holes " to be arranged (i.e.
Pole plate boundary 5-6mm is not provided with flow field), cathode outlet is arranged to be dislocatedly distributed with anode fluid introducing port, anode export, so that
Cathode outlet is isolated with fluid introducing port, the anode export of anode；It is symmetrical arranged " fixed screw holes " 10 simultaneously (with anode pole
Plate fixed screw holes coincide).Flow Field Design is hit exactly in pole plate, and cathode flow field uses parallel barrier flow field, and direction is directed toward cathode and is gone out
Mouthful, chute width 2mm, depth 1mm, rib width 1.5mm, the slot rib of " cathode flow field " is than about 4;3.The setting of barrier flow field peripheral is led
Chute is connected to cathode outlet, the hydrogen that convergence cathode generates, and is discharged from cathode outlet.
It include: 1 and of anode tap unipolar plate using the pole plate in present invention design flow field, the typical water electrolyzer assembled
Several positive pole and negative pole plates can be set as needed in cathode terminal unipolar plate 5 between anode tap unipolar plate 1 and cathode terminal unipolar plate 5
4.Membrane electrode 3 is placed between the anode and cathode of two panels (single, double) pole plate (such as: the anode-side and cathode monopole of bipolar plates 4
Between the cathode side of plate, the anode-side of anode unipolar plate 1 and the cathode side of bipolar plates 4 etc.), addition sealing ring, which is assembled into, to be contained
There is the electrolytic cell heap of single electrolytic cell of one or more electrode.
Claims (5)
1. a kind of have both water supply and cooling difunctional pole plate and flow field for pure water SPE water electrolyzer, which is characterized in that pole
Plate is unipolar plate or bipolar plates；Plate material is stainless steel, titanium plate or graphite plate；Polar board surface includes: anode cathode stream
Field, fluid introducing port, anode export, cathode outlet sealing surface and fixed screw holes；The anode cathode flow field includes anode stream
Field and cathode flow field；Anode flow field uses the serpentine design of single channel or multichannel；Cathode flow field is designed using barrier formula；Pole
Plate whole design is circle, and pole plate edge is provided with fixed screw holes, and polar board surface is also provided with fluid and leads in addition to designing flow field
Entrance, anode export, cathode outlet；The flow field be set to the pole plate tow sides middle part, the anode fluid introducing port,
Anode export is set to the both sides of anode flow field, is symmetric, and the cathode outlet is set to cathode plate avris, with anode fluid
Introducing port, anode export are dislocatedly distributed；The anode export is connect by interface channel with anode flow field, and the cathode outlet is logical
Interface channel is crossed to connect with cathode flow field.
2. water supply and cooling difunctional pole plate and flow field are had both for pure water SPE water electrolyzer as described in being required right 1,
It is characterized in that, the anode flow field runs through entire pole plate using single track or multiple tracks universe serpentine design, each channel.
3. water supply and cooling difunctional pole plate and flow field are had both for pure water SPE water electrolyzer as described in being required right 1,
It is characterized in that, the cathode flow field uses barrier formula flow Field Design.
4. water supply and cooling difunctional pole plate and flow field are had both for pure water SPE water electrolyzer according to claim 3,
It is characterized by: the cathode outlet is set to one end of the parallel palisading type groove of the cathode flow field, while being imported and exported with anode
Presentation is dislocatedly distributed.
5. water supply and cooling difunctional pole plate and flow field are had both for pure water SPE water electrolyzer according to claim 1,
It is characterized by: the plate fluid flow fields, the cathode plate fluid flow fields are set to the two sides of the pole plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910713672.XA CN110424024A (en) | 2019-08-02 | 2019-08-02 | 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910713672.XA CN110424024A (en) | 2019-08-02 | 2019-08-02 | 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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| CN110424024A true CN110424024A (en) | 2019-11-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114318386A (en) * | 2022-01-20 | 2022-04-12 | 氢鸿(杭州)科技有限公司 | Proton exchange membrane water electrolyzer, system and method |
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