CN118007152A - Square petal bionic flow field structure - Google Patents
Square petal bionic flow field structure Download PDFInfo
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- CN118007152A CN118007152A CN202410124518.XA CN202410124518A CN118007152A CN 118007152 A CN118007152 A CN 118007152A CN 202410124518 A CN202410124518 A CN 202410124518A CN 118007152 A CN118007152 A CN 118007152A
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 23
- 239000000376 reactant Substances 0.000 claims abstract description 51
- 238000005452 bending Methods 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000003592 biomimetic effect Effects 0.000 claims 1
- 239000012528 membrane Substances 0.000 abstract description 13
- 238000009826 distribution Methods 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 230000003197 catalytic effect Effects 0.000 description 7
- 238000012546 transfer Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 238000003487 electrochemical reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- -1 hydrogen ions Chemical class 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 238000009827 uniform distribution Methods 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
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
-
- 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
- C25B9/23—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
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- Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Sustainable Development (AREA)
- General Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a square petal bionic flow field structure, which comprises four petal-shaped flow channels which are uniformly distributed on the surface of a square flow field plate body and are symmetrical about the geometric center of the square flow field plate body, wherein one ends of the four petal-shaped flow channels, which are close to the geometric center of the flow field plate body, are mutually communicated, and parallel straight flow channels communicated with the four petal-shaped flow channels are arranged between two adjacent petal-shaped flow channels; the four vertexes of the flow field plate body are provided with reactant inlets or product outlets, and the other ends of the petal-shaped flow channels are communicated with the reactant inlets or the product outlets. The reactant, the temperature and the current density in the flow field are distributed more uniformly, so that the operation efficiency of the proton exchange membrane electrolytic cell is improved.
Description
Technical Field
The invention belongs to the technical field of electrochemistry, and particularly relates to a square petal bionic flow field structure.
Background
With the development of economy, the global energy demand is increased, the ecological environment problem is increasingly serious, and the green low-carbon development becomes a new measure for developing economy in various countries. In recent years, hydrogen is focused by people due to the characteristics of high heat generation, environmental friendliness, flexible energy storage and the like, and is widely applied gradually. Hydrogen is used as a secondary energy source and can be produced by coal gasification, methanol reforming, water electrolysis, photocatalytic water splitting and the like. The Proton Exchange Membrane Electrolytic Cell (PEMEC) used in photocatalytic water splitting has the advantages of no carbon emission, high current density, low gas crossing rate, high operation pressure, compact structure, high production purity, simple operation and maintenance and the like, and in the proton exchange membrane electrolytic cell, the structure of a flow field has important influence on the electrolytic performance, and the specific implementation is as follows: firstly, the unreasonable flow field structure leads to uneven distribution of reactants, so that the utilization of the active area of the catalyst is insufficient, and the hydrogen removal effect is poor; secondly, the unreasonable flow field structure leads to uneven temperature distribution, and the generated thermal stress accelerates the degradation of a Proton Exchange Membrane (PEM); thirdly, the unreasonable flow field structure leads to uneven current density, and accelerates the aging speed of the electrolytic tank.
The existing flow fields mainly comprise a serpentine flow field, an interdigital flow field, a parallel flow field and a novel bionic flow field, but the existing flow fields have some defects, wherein: for a parallel flow field, the flow velocity distribution of each channel is uneven, the pressure difference is small, the mobility of reactants is poor, and the concentration distribution is uneven; for an interdigital flow field, the problem of larger pressure drop loss exists; for a serpentine flow field, gas-liquid accumulation can be generated at a bend in the flowing process of reactants, so that the serpentine flow field has higher pressure drop; the flow channel of the novel bionic flow field structure is relatively complex, and the manufacturing and the processing are difficult.
In summary, the existing flow field has certain limitations in terms of slowing down the negative effects caused by the gas-liquid two-phase flow, ensuring the uniformity of reactant concentration distribution or manufacturing and processing, and the like, so that it is needed to provide a flow field which is convenient to process and manufacture and can ensure the uniform distribution of reactant concentration, temperature and current density.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a square petal bionic flow field structure, so that the distribution of reactants, temperature and current density is more uniform.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
A square petal bionic flow field structure comprises four petal-shaped flow channels which are uniformly distributed on the surface of a square flow field plate body and are symmetrical with respect to the geometric center of the square flow field plate body, one ends of the four petal-shaped flow channels, which are close to the geometric center of the flow field plate body, are mutually communicated, and parallel straight flow channels communicated with the four petal-shaped flow channels are arranged between two adjacent petal-shaped flow channels;
the four vertexes of the flow field plate body are provided with reactant inlets or product outlets, and the other ends of the petal-shaped flow channels are communicated with the reactant inlets or the product outlets.
Further, the petal-shaped flow channels comprise a first petal-shaped flow channel, a second petal-shaped flow channel, a third petal-shaped flow channel and a fourth petal-shaped flow channel;
The reactant inlet comprises a first reactant inlet and a second reactant inlet which are positioned on a diagonal line of the field plate body, the first reactant inlet is communicated with the first petal-shaped flow channel, and the second reactant inlet is communicated with the third petal-shaped flow channel;
The product outlet comprises a first product outlet and a second product outlet which are positioned on the other diagonal line of the field plate body, the first product outlet is communicated with the second petal-shaped flow channel, and the second product outlet is communicated with the fourth petal-shaped flow channel.
Further, the petal-shaped flow channels are diamond-shaped, and each petal-shaped flow channel is composed of a plurality of obtuse-angle bending flow channels symmetrically arranged relative to the diagonal line of the flow field plate body.
Further, the width of the obtuse angle bending flow channel is 1mm, and the interval between two adjacent obtuse angle bending flow channels is 1mm.
Further, the parallel straight flow channels are formed by a plurality of straight flow channels parallel to the edges of the flow field plate body, and the lengths of the straight flow channels are sequentially reduced towards the center direction of the flow field plate body.
Further, the width of the straight flow channel is 1mm, and the interval between two adjacent straight flow channels is 1mm.
Further, the flow field plate body is made of graphite, stainless steel or foam metal.
Compared with the prior art, the invention has the following technical effects:
According to the invention, the flower is taken as an object for bionic design, a bionic flow field structure is constructed through four petal-shaped flow channels which are symmetrical with respect to the geometric center of the flow field plate body and parallel straight flow channels which are connected between two adjacent petal-shaped flow channels, the number of reaction liquid flow paths is increased by the petal-shaped flow channels, and compared with a traditional single channel, the multi-channel structure has smaller flow resistance, and is more beneficial to reducing pressure drop; in addition, the parallel straight flow channels are utilized to enable pressure difference to exist between the adjacent petal-shaped flow channels, reactant flow and mass transfer between the petal-shaped flow channels are utilized, the strength of cross flow under the ribs is increased, the mass transfer level, the reactant concentration uniformity and the current density uniformity under the ribs of the reactant are improved, the effective discharge of generated gas is promoted, the gas blockage is prevented, and therefore the operation efficiency of the proton exchange membrane electrolytic cell is improved. Therefore, the flow field structure of the invention not only reduces the pressure drop, but also improves the mass transfer level, thus being applicable to proton exchange membrane electrolytic tanks, fuel cells, flow batteries and other electrochemical devices, and having good universality.
The reactant inlet and the product outlet are arranged along the diagonal line, so that the flow path of the reactant is shortened, the pressure drop is further reduced, the pressure difference between the reactant inlet and the product outlet is reduced, the reactant liquid is fully mixed in the flow field, the concentration distribution and the temperature distribution uniformity of the reactant are ensured, and the operation efficiency of the proton exchange membrane electrolytic cell is effectively improved.
The petal-shaped flow channels which are similar to the parallel flow channels and are formed by taking the diagonal lines of the square field plate body as symmetry axes through the obtuse angle bending flow channels enable reactant liquid to flow to the electrode through the multiple channels at a high flow speed and generate electrochemical reaction, and the petal-shaped flow channels are directly connected with the reactant inlet and the product outlet, so that the overall pressure drop level of the flow field is reduced, and the pumping loss of the electrolytic tank is reduced; in addition, because the petal flow field and the parallel straight flow channel do not involve arc bending, the flow field has a simple structure, is convenient for milling machine processing, and saves production cost.
Drawings
Fig. 1: the structure diagram of the square petal bionic flow field is shown in the invention;
Fig. 2: the flow field plate with the square petal bionic flow field is structurally schematic;
fig. 3: the flow field plate with the square petal bionic flow field is applied to an electrolytic tank;
In the figure: 1. a first reactant inlet; 2. a first petal-shaped flow channel; 3. parallel straight flow channels; 4. a second petal-shaped flow channel; 5. a first product outlet; 6. a flow field plate body; 7. a second reactant inlet; 8. a third petal-shaped flow channel; 9. a fourth petal-shaped flow channel; 10. a second product outlet; 11. an anode flow field plate; 12. an anode diffusion layer; 13. an anode catalytic layer; 14. a proton exchange membrane; 15. a cathode catalytic layer; 16. a cathode diffusion layer; 17. a cathode flow field plate.
Detailed Description
The following examples illustrate the invention in further detail.
As shown in fig. 1 and 2, the square petal bionic flow field structure comprises four petal-shaped flow channels which are uniformly distributed on the surface of a square flow field plate body 6 and are symmetrical about the geometric center of the square flow field plate body, parallel straight flow channels 3 communicated with the square flow channels are arranged between two adjacent petal-shaped flow channels, the parallel straight flow channels 3 can strengthen the flow and mass transfer of reactants between the petal-shaped flow channels, and pressure difference exists between the adjacent petal-shaped flow channels, so that the intensity of cross flow under a rib is increased, the mass transfer level under the rib of the reactants is improved, and the performance of an electrolytic cell is improved;
the petal-shaped flow channels comprise a first petal-shaped flow channel 2, a second petal-shaped flow channel 4, a third petal-shaped flow channel 8 and a fourth petal-shaped flow channel 9 which are sequentially arranged along the clockwise direction, and one ends, close to the geometric center of the flow field plate body 6, of the first petal-shaped flow channel 2, the second petal-shaped flow channel 4, the third petal-shaped flow channel 8 and the fourth petal-shaped flow channel 9 are mutually communicated;
The four vertexes of the flow field plate body 6 are respectively provided with a first reactant inlet 1, a second reactant inlet 7, a first product outlet 5 and a second product outlet 10, and the first reactant inlet 1 and the second reactant inlet 7 are positioned on a diagonal line of the flow field plate body 6 and are used for simultaneously flowing in reactant liquid; the first product outlet 5 and the second product outlet 10 are located on the other diagonal of the flow field plate body 6 for simultaneous outflow of product;
The first reactant inlet 1 is communicated with the first petal-shaped flow channel 2, the second reactant inlet 7 is communicated with the third petal-shaped flow channel 8, the first product outlet 5 is communicated with the second petal-shaped flow channel 4, the second product outlet 10 is communicated with the fourth petal-shaped flow channel 9, and the reaction liquid flows into the flow field from the first reactant inlet 1 and the second reactant inlet 7 at the same time, flows through the petal-shaped flow channels and the parallel straight flow channels 3, and after electrochemical reaction, the obtained product flows out from the first product outlet 5 and the second product outlet 10, so that the flow path between the reactant inlet and the product outlet is shortened, the pumping loss of the electrolytic tank is reduced, and the energy conversion efficiency is improved;
the first petal-shaped flow channel 2, the second petal-shaped flow channel 4, the third petal-shaped flow channel 8 and the fourth petal-shaped flow channel 9 are diamond-shaped and are formed by 6 obtuse angle bending flow channels symmetrical with the diagonal line of the flow field plate body 6, the width of each obtuse angle bending flow channel is 1mm, and the interval between every two adjacent obtuse angle bending flow channels is 1mm, wherein: the number and the size specification of the obtuse angle bending can be adjusted according to the requirement;
The first petal-shaped flow channel 2, the second petal-shaped flow channel 4, the third petal-shaped flow channel 8 and the fourth petal-shaped flow channel 9 are arranged in a diamond shape, so that the number of flow paths of reactant fluid can be increased, the pressure drop level is lower, the reactant fluid can enter the flow channels at a faster flow rate and can be fully contacted with more active sites on the electrode, and the occurrence speed of electrochemical reaction can be improved; meanwhile, the rhombic petal-shaped flow channels are communicated with the parallel straight flow channels 3, so that the overall pressure drop level of the flow field is reduced, the pumping loss of the electrolytic tank is reduced, and the energy conversion efficiency is improved.
The parallel straight flow channels 3 are formed by 19 straight flow channels parallel to the edges of the flow field plate body 6, the lengths of the straight flow channels sequentially decrease towards the center direction of the flow field plate body 6, the width of each straight flow channel is 1mm, the distance between two adjacent straight flow channels is 1mm, and the number and the size specification of the straight flow channels can be adjusted according to the requirement and the obtuse-angle bending specification;
preferably, the present embodiment may replace the parallel straight channels 3 with existing lattice channels or serpentine channels.
Preferably, the flow field plate body 6 is made of foam metal material, high-conductivity graphite material or corrosion-resistant stainless steel material.
The square petal bionic flow field structure of the embodiment is not only suitable for proton exchange membrane electrolytic cells, but also suitable for various electrochemical energy conversion devices such as flow batteries, fuel cells and the like, and the working principle of the square petal bionic flow field structure is described by taking the proton exchange membrane electrolytic cells as an example;
as shown in fig. 3, when the flow field plate with the square petal bionic flow field structure of the embodiment is applied to a proton exchange membrane electrolytic cell, the working process of the proton exchange membrane electrolytic cell comprises the following steps:
Step 1, electrolyte is pumped into a first petal-shaped flow channel 2 and a third petal-shaped flow channel 8 from a first reactant inlet 1 and a second reactant inlet 7 of an anode flow field plate 11 and a cathode flow field plate 17, flows through a parallel straight flow channel 3, a second petal-shaped flow channel 4 and a fourth petal-shaped flow channel 9, transfers mass through an anode diffusion layer 12 and a cathode diffusion layer 16 and reaches an anode catalytic layer 13 and a cathode catalytic layer 15;
step 2, separating out oxygen and hydrogen ions from the liquid water in the anode catalytic layer 13, releasing electrons, transferring the electrons to the cathode catalytic layer 15 through an external circuit, and diffusing the hydrogen ions to the cathode catalytic layer 15 through the proton exchange membrane 14 and combining the hydrogen ions with the electrons to generate hydrogen;
Step 3, along with the progress of the electrochemical reaction process, the mixture of oxygen and liquid water generated by the anode reaction is discharged from the first product outlet 5 of the anode flow field and the second product outlet 10 of the anode flow field, and the mixture of hydrogen and liquid water generated by the cathode reaction is discharged from the first product outlet 5 of the cathode flow field and the second product outlet 10 of the cathode flow field.
Claims (7)
1. The square petal bionic flow field structure is characterized by comprising four petal-shaped flow channels which are uniformly distributed on the surface of a square flow field plate body (6) and are symmetrical with respect to the geometric center of the square flow field plate body, one ends of the four petal-shaped flow channels, which are close to the geometric center of the flow field plate body (6), are mutually communicated, and parallel straight flow channels (3) communicated with the four petal-shaped flow channels are arranged between two adjacent petal-shaped flow channels;
the four vertexes of the flow field plate body (6) are respectively provided with a reactant inlet or a product outlet, and the other ends of the petal-shaped flow channels are communicated with the reactant inlet or the product outlet.
2. The square petal bionic flow field structure according to claim 1, wherein the petal-shaped flow channels comprise a first petal-shaped flow channel (2), a second petal-shaped flow channel (4), a third petal-shaped flow channel (8) and a fourth petal-shaped flow channel (9);
The reactant inlet comprises a first reactant inlet (1) and a second reactant inlet (7) which are positioned on a diagonal line of the field plate body (6), the first reactant inlet (1) is communicated with the first petal-shaped flow channel (2), and the second reactant inlet (7) is communicated with the third petal-shaped flow channel (8);
The product outlet comprises a first product outlet (5) and a second product outlet (10) which are positioned on the other diagonal line of the field plate body (6), the first product outlet (5) is communicated with the second petal-shaped flow channel (4), and the second product outlet (10) is communicated with the fourth petal-shaped flow channel (9).
3. The square petal bionic flow field structure according to claim 1 or 2, wherein the petal-shaped flow channels are diamond-shaped, and each petal-shaped flow channel is composed of a plurality of obtuse-angle bending flow channels symmetrically arranged with respect to the diagonal line of the flow field plate body (6).
4. The square petal bionic flow field structure according to claim 3, wherein the width of the obtuse-angle bending flow passage is 1mm, and the interval between two adjacent obtuse-angle bending flow passages is 1mm.
5. The square petal bionic flow field structure according to claim 1 or 2, wherein the parallel straight flow channels (3) are formed by a plurality of straight flow channels parallel to the edges of the flow field plate body (6), and the lengths of the straight flow channels become smaller in sequence towards the geometric center direction of the flow field plate body (6).
6. The square petal bionic flow field structure according to claim 5, wherein the width of the straight flow channels is 1mm, and the interval between two adjacent straight flow channels is 1mm.
7. The square petal biomimetic flow field structure according to claim 1 or 2, wherein the flow field plate body (6) is made of graphite, stainless steel or foam metal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410124518.XA CN118007152A (en) | 2024-01-30 | 2024-01-30 | Square petal bionic flow field structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410124518.XA CN118007152A (en) | 2024-01-30 | 2024-01-30 | Square petal bionic flow field structure |
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