CN105908210B - A kind of solid polymer electrolyte electrolytic bath - Google Patents
A kind of solid polymer electrolyte electrolytic bath Download PDFInfo
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- CN105908210B CN105908210B CN201610283587.0A CN201610283587A CN105908210B CN 105908210 B CN105908210 B CN 105908210B CN 201610283587 A CN201610283587 A CN 201610283587A CN 105908210 B CN105908210 B CN 105908210B
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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
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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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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
Abstract
The invention discloses a kind of structures of solid polymer electrolyte (SPE) water electrolysis hydrogen production electrolytic cell, wherein mainly including the mass transfer access structure and sealing structure of electrolyzer system.Mass transfer access designs the working medium transmission channel mainly for electrolytic cell yin-yang the two poles of the earth, it is sufficient to guarantee that the water of anode electrolytic cell supplies, and the hydrogen of cathode and the oxygen of anode and the enough smoothly output of water energy, while guaranteeing the independence between the access of yin-yang the two poles of the earth, mass transfer path is non-interference.Sealing structure is designed mainly for the sealing element of working medium transmission region in electrolyzer electric pile structure, guarantees the leakproofness between each component of pile.Electrolytic cell of the invention can guarantee that electrolytic process is stable, efficiently carries out, electrolytic efficiency with higher and safety, while also reduce the processing cost of cell construction part.
Description
Technical field
The invention belongs to new energy fields, are related to water electrolysis hydrogen production technology, especially a kind of solid polymer electrolyte
(SPE) cell electrolysis device.
Background technique
It is increasingly urgent with energy issue of world, Hydrogen Energy with its cleaning, efficiently, the features such as stablizing receive academia
It pays high attention to.Hydrogen Energy belongs to secondary energy sources, potentially acts as the storage medium of traditional new energy such as wind energy, solar energy, effectively will
The electric energy of these unstable traditional energies conversions is stored by Hydrogen Energy, then is concentrated and be converted into electric energy and be connected to the grid, and is served as
The buffer medium of energy conversion.Hydrogen Energy effectively with key be how to solve the problems, such as other energy and Hydrogen Energy Efficient Conversion.
The method for currently preparing hydrogen mainly has reformation hydrogen production, photodissociation hydrogen manufacturing, biological decomposition hydrogen manufacturing, water electrolysis hydrogen production etc., wherein being electrolysed
Water hydrogen manufacturing with its technique skillful, safety and stability, hydrogen purity it is high etc. advantages obtain more favors.Electrolysis hydrogen producing process
In, the solid polymer electrolyte (Solid Polymer Electrolyte, SPE) that is developed based on fuel cell technology
Water electrolysis hydrogen producing technology gradually moves to maturity.
What SPE electrolytic cell was mainly made of MEA component, pole plate, frame and sealing element etc..Wherein the performance of MEA is to electrolysis
The performance of slot plays a decisive role, but effective cooperation of trough body structure is needed just to can guarantee SPE electrolytic cell efficient stable simultaneously
Operation.Critical structures in trough body structure include sealing structure and flow field structure.Sealing structure is to prevent membrane electrode assembly two
The gas-liquid of side is mutually altered and leaked and the gas-liquid between bipolar plates and membrane electrode assembly is mutually altered and leakage problem, air seal problem meeting
The safety of electrolytic cell is seriously affected, but also the preparation purity of gas is had a greatly reduced quality.Flow field structure determines electrolytic cell working medium
The mode of transmission is the key that guarantee that MEA is worked normally.For different cell constructions, corresponding flow Field Design should be taken
Strategy, reduces the resistance to mass tranfer of MEA, and guarantees the stable type of operating condition.
Chinese patent CN 1966777A devises a kind of water electrolysis device with proton exchange membrane, using multiple grade formula integrated morphology
It is assembled, whole linear sealing is realized using silica gel in electrolytic cell each unit part.As shown in Figure 1, front end-plate 1 position, then according to
Secondary installation diffuser plate 2, preceding specific panel 4, membrane electrode 5, hydrogen-oxygen flow-field plate 6, rear specific panel 7, rear conductive plate 8, delays preceding conductive plate 3
Punching 9, rear position plate 10, the carefully and neatly done correspondence of each unit when wherein location hole ensure that integrated, using high-elastic when each unit is integrated
Property silica gel carry out whole linear sealing, be finally locked with metal screw, its advantage is that the device being capable of effectively electrolysis water system
Take hydrogen and oxygen；On the other hand, which is to ensure that anode flow field working medium entry and exit boundary condition is consistent by diffuser plate
Property, guarantee all runner working medium uniformities in flow field, specific panel guarantees the independence of yin-yang the two poles of the earth access before and after use, these knots
Component increases the complexity of electrolyzer system, increases the volume and weight of electrolytic cell, but also design cost rises.This
Outside, which uses linear sealing structure, and sealing reliability is not high.The sealing area coverage very little of linear sealing, sealing ring exist
The region of Long Term Contact electrolytic environments will appear aging phenomenon.Once a certain point failure on sealing ring, then entire sealing system
It will collapse.Also, due to needing to add groove to fixed seal ring, all structural members that mass transfer access is passed through are required
Seal groove is set in access periphery, increases the processing cost of electrolytic cell.In addition, the patent auxiliary member is more, it must additional facilities
Conductive plate and buffer board further increase electrolytic cell volume and weight.The patent anode uses carbon paper as collector layer, sun
The oxygen-enriched high potential environment of pole easily causes to corrode to carbon paper, and electrode material is caused to fail.
Summary of the invention
The purpose of the present invention is to provide a kind of electrolysis unit for water electrolysis hydrogen production, especially a kind of solid polymer
Electrolyte electrolytic bath electrolysis unit overcomes the disadvantages mentioned above of the prior art, so that electrolytic process is stable, efficiently carries out, has
Higher electrolytic efficiency and safety, while also reducing the processing cost of cell construction part.
In order to achieve the above objectives, the used following technical scheme of the present invention:
A kind of structure of solid polymer electrolyte water electrolysis hydrogen production electrolytic cell, wherein mainly including the biography of electrolyzer system
Matter access structure and sealing structure.Mass transfer access structure guarantees electricity mainly for the working medium transmission channel at electrolytic cell yin-yang the two poles of the earth
The water for solving slot anode supplies abundance, and the hydrogen of cathode and the oxygen of anode and the enough smoothly output of water energy, while guaranteeing yin-yang two
Independence between the access of pole, mass transfer path are non-interference；Sealing structure is transmitted mainly for working medium in electrolyzer electric pile structure
The sealing element in region designs, and guarantees the leakproofness between each component of pile.
A kind of solid polymer electrolyte electrolytic water device, the device include: outside plate, for reinforcing electrolytic cell end, are protected
Card plus load is evenly applied to inner structural members；End plate, is used for fixed polar plate, is provided with that " hydrostatic is steady at end plate mass transfer access
Pressure " structure；" hydrostatic pressure stabilizing " structure forms one in one groove of inlet and outlet position hollow out of end plate using thick end plate
A pools zone forms an opposite regulation region so that the speed to Inlet and outlet water forms buffering, is pole plate and bipolar plate flow field
The uniform boundary condition of pressure is provided；Pole plate and bipolar plates provide the flow fields environment of water, gas transmission, and flow field is using " rectangular
Straight channel " design, entry and exit use the in line porous design of multichannel.Core component membrane electrode is electrolysed mainly by anode current collection
Pole layer, anode catalyst layer, proton exchange membrane (PEM), cathode catalysis layer and cathode current collector layer form, wherein anode collector layer
Use Adams fusion method IrO2Modified titanium net, cathode current collector layer use carbon paper.It is designed using " face sealing " in electrolyte pond.
Assembly passes through nut tightening Torque Control using uniformly distributed bolt fastening pressurization, on-load pressure.
Specifically, a kind of solid polymer electrolyte electrolytic bath for preparing hydrogen for electrolysis water, electrolytic cell pile can
Need to increase or decrease MEA and bipolar plates quantity according to practical electrolysis.Pile primary structure includes outside plate, end plate, pole plate, film electricity
Pole, bipolar plates and sealing element, material are respectively stainless steel, epoxy resin, Titanium, Titanium and silica gel thin film.Pole plate and
It is electrolysis region between bipolar plates, uses membrane electrode (MEA) as electrochemical reaction place.Membrane electrode uses direct spraying technique
(CCM) it prepares, structure includes: anode collector layer, anode catalyst layer, proton exchange membrane (PEM), cathode catalysis layer, cathode collection
Electrode layer, wherein anode collector layer uses Adams chemical synthesis IrO2Modified porous titanium material, cathode current collector layer use
Carbon paper after hydrophobic treatment.Pile clamping mode passes through the control of nut tightening torque using uniformly distributed bolt fastening pressurization, on-load pressure
System.When work, input terminal pole plate connects anode, and output end pole plate connects cathode.Input terminal is passed through high purity water, hydrogen and oxygen respectively from
The export of output end outside plate difference access.
Further, it is preferable that the pole plate and bipolar plate flow field are designed using " rectangular straight channel ".
Preferably, the pole plate and bipolar plate flow field working medium entry and exit use the in line porous design of multichannel, each
Runner be all assigned it is round go out, enter through-hole.
Preferably, the end plate mass transfer access is equipped with " hydrostatic pressure stabilizing " structure, guarantees answering for pole plate and bipolar plates anode
The in line discrepancy of number, mouth of a river hydraulic pressure uniformity, while ensuring that cathode water, vapour transmission are unimpeded.
Preferably, described " hydrostatic pressure stabilizing " structure, including water inlet " pressure-stabilizing bin " and water outlet " pressure-stabilizing bin ", " pressure stabilizing of intaking
Storehouse " feature is that pile end plate water inlet is lower than bipolar plates anode intake tunnel, forms a water storehouse；It is discharged " pressure-stabilizing bin " feature
It is higher than bipolar plates anode for pile end plate water outlet and goes out channel, forms a water storehouse.
Preferably, it is avoided and is designed using flow field, be mutually perpendicular to the access at yin-yang the two poles of the earth spatially, make mass transfer access phase
Spatial offset is formed between mutually, is effectively guaranteed the independence of two accesses.The flow field periphery side of anode-side is cathode
The hydrogen of flow field channels, the water of cathode and generation and it can be delivered to flow field exits by runner, and pass through anode-side and export.Due to
Access is outside anode side flow field, therefore working medium can't enter anode region.Likewise, cathode side flow field periphery is set two sides up and down
There is an anode flow field access, access passes through the cathode sides of bipolar plates from below for water supply, in the presence of hydraulic pressure along anode side flow channels
It rises and participates in cell reaction.Water and the oxygen of generation are exported from the outlet above flow field, finally export pile across remaining bipolar plates.
Preferably, the cathode output channel of the output end end plate and outside plate uses offset design, most along in line outlet
Lower section setting, facilitates the export of water, prevents electric tank cathode end ponding.
Preferably, " face sealing " is used to design, the shape size of sealing element is identical as the structural member surface contacted, sealing
The hole location of each access of electrolytic cell is reserved on part, remaining area is all effective seal area.
Preferably, the sealing element for using " face sealing " to design potentially acts as the effect of the bolster between each structural member, simultaneously
Play insulation effect.
Membrane electrode catalytic layer is prepared by direct spraying technique (CCM).Wherein anode collector layer is Adams fusion method
The modified porous titanium material in surface, electrode surface are coated with IrO2Coating；Anode catalyst layer is by having analysis oxygen ability and corrosion resistant
Ir, Ru or Ir of erosion ability, the oxide of Ru or alloy and perfluorosulfonic acid ion exchanger resin are constituted；Proton exchange membrane is complete
Fluosulfonic acid amberplex；Cathode catalysis layer is exchanged by Pt or Pt/C or the corrosion-resistant catalyst of multicomponent alloy with perfluorosulfonic acid ion
Resin is constituted；Cathode current collector layer is the carbon paper or porous titanium material after hydrophobic treatment.
Due to the adoption of the above technical scheme, the invention has the following advantages: the present invention uses " hydrostatic pressure stabilizing " structure
Design makes end plate have the function of guaranteeing fluid field pressure uniformity boundary condition, with the in line porous flow field of multi-path
Entry and exit design ensure that the uniformity that working medium is distributed in entire flow field in conjunction with the flow Field Design of " rectangular straight channel "." face is close
Envelope " design ensure that the reliability of sealing, while sealing element acts as and changes kind of medium and dielectric.The yin of " crossings on different level " formula
Positive the two poles of the earth path space evacuation design ensure that the independence of access.External circuit is introduced directly by pole plate, without adding conduction
Hardened structure.Design compared to the prior art, present invention greatly simplifies electrolyzer system, eliminate specific panel, diffuser plate,
The structures such as conductive plate and buffer board, make design of electrolysis cells lightweight, and system is brief efficiently.Present invention uses Adams fusion methods
For the modified Porous titanium electrode material in surface as anode electrode layer, electrode material surface is coated with IrO2Coating, Neng Gouyou
It prevents electrode material by oxidation corrosion to effect, while extending the three-phase reaction interface of anode catalyst layer, be collector layer tool
There is the function of auxiliary catalysis, improves electrolytic cell side catalytic efficiency.
In general, of the invention to be mainly characterized by:
It is protected using " plural access " in line porous flow field entry and exit design in conjunction with the flow Field Design of " rectangular straight channel "
The uniformity that working medium is distributed in entire flow field is demonstrate,proved.
It is designed using " hydrostatic pressure stabilizing " structure, end plate is made to have the function for guaranteeing fluid field pressure uniformity boundary condition
Energy；
It ensure that the reliability of sealing using " face sealing " design, while sealing element acts as and changes kind of medium and insulation Jie
Matter.
It ensure that the independence of access using yin-yang the two poles of the earth path space evacuation design of " crossings on different level " formula.
It is introduced directly into using external circuit by pole plate, without adding conductive plate structure.
Detailed description of the invention
Fig. 1 is the water electrolysis device with proton exchange membrane schematic diagram of prior art patent CN 1966777A.
Fig. 2 is the solid polymer electrolyte electrolytic bath structural schematic diagram of one embodiment of the invention.
Fig. 3 is the film electrode structure schematic diagram of one embodiment of the invention.
Fig. 4 be one embodiment of the invention bipolar plates and anode flow field and cathode flow field control schematic diagram.
Fig. 5 is the solid polymer electrolyte electrolytic bath operation principle schematic diagram of one embodiment of the invention.
Fig. 6 is one embodiment of the invention end plate " hydrostatic pressure stabilizing " structural schematic diagram.
Fig. 7 is one embodiment of the invention end plate " hydrostatic pressure stabilizing " operation schematic diagram.
Fig. 8 is one embodiment of the invention output end end plate water path structure schematic diagram.
Fig. 9 is one embodiment of the invention " face sealing " design diagram.
Figure 10 is the test performance figure of one embodiment of the invention.
Figure 11 is the appearance diagram of the embodiment of the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
Fig. 2 show the solid polymer electrolyte electrolytic bath structural schematic diagram of one embodiment of the invention, the electrolytic cell
Successively by output end outside plate 21, output end end plate 22, output end pole plate 23, membrane electrode 24, bipolar plates 28, input terminal pole plate 25,
Input terminal end plate 26, input terminal outside plate 27, sealing element 29, locating rod 210 form.Assembly is added using uniformly distributed bolt fastening pressurization
It carries pressure and passes through nut tightening Torque Control.Wherein, output end outside plate 21, input terminal outside plate 27 are corrosion resisting stainless steel metal material
Matter, the uniformly distributed bolt hole in periphery, diagonal position are equipped with a pair of of positioning rod through-hole；Output end end plate 22, input terminal end plate 26 are ring
Oxygen resin material, the uniformly distributed bolt hole in periphery, diagonal position are equipped with a pair of of positioning rod through-hole；It is carved with yin in 23 unilateral side of output end pole plate
Anode flow field, the pole plate other side and end plate contact are carved in pole flow field, 25 unilateral side of input terminal pole plate, and diagonal position is equipped with a pair of of positioning
Rod through-hole；28 bilateral of bipolar plates is carved with anode and cathode runner, and yin-yang two sides directly connect with 24 anode and cathode collector layer of membrane electrode respectively
Touching, 28 diagonal position of bipolar plates are equipped with a pair of of positioning rod through-hole；Electrolysis external circuit divide positive and negative anodes not with input terminal pole plate 25 and defeated
Outlet pole plate 23 connects；24 anode collector layer of membrane electrode, which is that Adams fusion method surface is modified, is coated with IrO2It is porous
Titanium net, cathode are water delivery treated carbon paper.This embodiment illustrates the structures of five membrane electrode electrolysis slot heaps on chip, can be according to reality
Border needs to increase or decrease the quantity flexible assembling electrolytic cell of bipolar plates and membrane electrode.
Fig. 3 show the film electrode structure schematic diagram of one embodiment of the invention.Membrane electrode is by anode collector layer 31, sun
Pole Catalytic Layer 32, proton exchange membrane 33, cathode catalysis layer 34, cathode current collector layer 35 form.Wherein 31 material of anode collector layer
Material is the modified porous titanium material in Adams fusion method surface, and electrode surface is coated with a nanometer IrO2Coating；Anode catalyst layer
32 by have analysis oxygen ability and corrosion resistance Ir, Ru (or oxide of Ir, Ru or both alloy) and perfluorinated sulfonic acid from
Sub-exchange resin is constituted；Proton exchange membrane 33 is perfluorinated sulfonic acid ion exchange membrane；Cathode catalysis layer 34 is by Pt or Pt/C or polynary
The corrosion-resistant catalyst of alloy and perfluorosulfonic acid ion exchanger resin are constituted；Cathode current collector layer 35 is the carbon paper after hydrophobic treatment.
Membrane electrode catalytic layer is prepared by direct spraying technique (CCM).
Fig. 4 show the bipolar plates and flow field schematic diagram of one embodiment of the invention.Distinguish facility anode in bipolar plates two sides
Effluent field 41 and cathode side flow field 42.The access at yin-yang the two poles of the earth is spatially mutually perpendicular to, and the peripheral side of anode side flow field 41 is
The hydrogen of the access of cathode side flow field 42, the water of cathode and generation and it can be delivered to flow field exits by runner, and pass through anode
Side export.Since access is other than anode side flow field 41, working medium can't enter anode region.Likewise, cathode effluent
Two sides are equipped with 41 access of anode side flow field up and down for 42 peripheries, and access passes through the cathode sides of bipolar plates from below for water supply, in hydraulic pressure
Under the action of along anode side flow channels rise participate in cell reaction.Water and the oxygen of generation are exported from the outlet above flow field, are passed through
Remaining bipolar plates finally exports pile.Flow field is using rectangular straight channel and in line plural import and export design.
Fig. 5 show the solid polymer electrolyte electrolytic bath operation principle schematic diagram of one embodiment of the invention.Pile
Operating condition be divided into that cathodic hydrogen generates and derived channel 51 and anode oxygen generate and 52 liang of aspects of derived channel.Cathodic hydrogen is raw
At and derived channel 51 illustrate hydrogen membrane electrode cathode Catalytic Layer generation after, pass through bipolar plates cathode together together with vapor
Effluent field and cathode plate flow field transverse guidance finally pass through the " hydrostatic of subsequent components to output end end plate in line through hole
Pressure stabilizing " structure most exports electrolytic cell through output end outside plate access afterwards.Anode oxygen generates and derived channel 52 illustrates water from defeated
Enter outside plate is held to enter electrolytic cell, after " hydrostatic pressure stabilizing " structure of end plate, with constant pressure be delivered to each piece of bipolar plates and
The anode-side of pole plate enters flow field by line through-hole and participates in cell reaction；Oxygen is after the generation of membrane electrode anode catalyst layer, even
Flow field is exported together with water, passes through " hydrostatic pressure stabilizing " structure of subsequent components to output end end plate, it is most logical through output end outside plate afterwards
Road exports electrolytic cell.
Fig. 6 show one embodiment of the invention end plate " hydrostatic pressure stabilizing " structural schematic diagram.The outside plate of input terminal 61 enters water
Opening's edge end plate " hydrostatic pressure stabilizing " structure is arranged below, and the in line water inlet of pole plate is arranged along " hydrostatic pressure stabilizing " structure top.Relatively
, the outside plate water outlet of output end 62 is arranged along " hydrostatic pressure stabilizing " structure top, and the in line water outlet of pole plate is along " cabin hydrostatic is steady
Pressure " structure is arranged below.
Fig. 7 show one embodiment of the invention end plate " hydrostatic pressure stabilizing " operation schematic diagram.Water flow is before entering flow field
The buffering of " pressure-stabilizing bin " must be first passed through, until liquid level exceeds and just formal after the in line water inlet of pole plate enters stream in " pressure-stabilizing bin "
?.After the water flow of outer pipeline medium-high speed sports enters " pressure-stabilizing bin " structure of larger space, flow velocity can sharply decline, and be formed quasi-
Stationary state, so that the pressure uniformity of all water inlets of pole plate.After water flow flows out flow field, " pressure stabilizing is also passed through
The buffering of storehouse " structure, forms the quasi-static fluid column of certain volume, to ensure that the pressure uniform one of all water outlets of pole plate
It causes.Boundary condition needed for having finally obtained flow field.
Fig. 8 show one embodiment of the invention output end end plate water path structure schematic diagram.Output end outside plate is exported along end
The biasing setting of plate " pressure-stabilizing bin " structure lower edge makes the enough smoothly export cathodes of the water energy of condensation.
Fig. 9 show " face sealing " design diagram of one embodiment of the invention.Sealing element type is divided into: outside plate and end
Plate sealing 91, end plate and pole plate sealing 92, pole plate and MEA seal 93, MEA and bipolar plates anode side seal 94, bipolar plates cathode
Side and MEA sealing 95.Sealing element ensure that the independence of mass transfer access between adjacent bonds component, prevent the working medium at yin-yang the two poles of the earth mutual
It invades.In addition to passage region, whole remaining areas of structural member surface can form effective sealing, and improve sealing system can
By property.Sealing material selects silica gel thin film, can control collector and MEA by adjusting the silica gel thin film thickness adjacent with MEA
It is catalyzed the pressure of layer surface, makes the work of MEA Catalytic Layer in safe and efficient pressure environment.In addition, sealing element can also play knot
The effect of structure buffering and insulation.
Figure 10 is the test performance figure using one embodiment prepared by the present invention.Bolt clamp load torque 4Nm, by flat
Stream pump is passed through high purity water (18.2M Ω cm, 24 DEG C), flow 100mL/min from input terminal.Electrolyzer temperature passes through thermostatted water
Bath is maintained at 80 DEG C.It tests power supply and uses current control mode, current density mobility scale: 0.01-1Acm-2, 1A/cm2Item
Current potential is 2.064V under part.
Figure 11 is the appearance diagram of the embodiment of the present invention.Wherein show appearance outside plate 111, appearance end plate 112, appearance
Bipolar plates 113 and appearance membrane electrode 114.
The above-mentioned description to embodiment of the present invention is for that can understand and answer convenient for those skilled in the art
With the present invention.Person skilled in the art obviously easily can make various modifications to these embodiments, and this is said
Bright General Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to here
Embodiment, those skilled in the art's announcement according to the present invention do not depart from any modification that scope made, equally replace
It changes, improve, should all be included in the protection scope of the present invention.
Claims (19)
1. a kind of solid polymer electrolyte electrolytic bath, it is characterised in that: mass transfer access structure including electrolyzer system and close
Seal structure, the mass transfer access structure is the working medium transmission channel for electrolytic cell yin-yang the two poles of the earth, for guaranteeing anode electrolytic cell
Water supply sufficient, and the hydrogen of cathode and the oxygen of anode and the enough smoothly output of water energy, while guarantee yin-yang the two poles of the earth access it
Between independence, mass transfer path is non-interference；The sealing structure is for working medium transmission region in electrolyzer electric pile structure
Sealing element, for guaranteeing the leakproofness between each component of pile；The mass transfer access structure is equipped with " hydrostatic pressure stabilizing " structure, described
" hydrostatic pressure stabilizing " refers to the multi-channel straight discharge for the bipolar plates for guaranteeing pole plate and anode-side, water inlet hydraulic pressure uniformity, simultaneously
Ensure that cathode water, vapour transmission are unimpeded；
" hydrostatic pressure stabilizing " structure forms a product in one groove of inlet and outlet position hollow out of end plate using thick end plate
Pool forms an opposite regulation region so that the speed to Inlet and outlet water forms buffering.
2. solid polymer electrolyte electrolytic bath according to claim 1 characterized by comprising
Outside plate guarantees that plus load is evenly applied to inner structural members for reinforcing electrolytic cell end；End plate is used for fixed pole
Plate；Pole plate and bipolar plates provide the flow fields environment of water, gas transmission；Membrane electrode includes anode collector layer, anode catalyst layer, matter
Proton exchange, cathode catalysis layer and cathode current collector layer.
3. solid polymer electrolyte electrolytic bath according to claim 2, it is characterised in that: the pole plate and bipolar plates stream
It is designed using " rectangular straight channel " field.
4. solid polymer electrolyte electrolytic bath according to claim 2, it is characterised in that:
The pole plate and bipolar plate flow field working medium entry and exit use the in line porous design of multichannel, and each runner all distributes
There is circle to go out, enter through-hole.
5. solid polymer electrolyte electrolytic bath according to claim 1, it is characterised in that: described " hydrostatic pressure stabilizing " knot
Structure, including water inlet " pressure-stabilizing bin " and water outlet " pressure-stabilizing bin ", the water inlet " pressure-stabilizing bin " are that pile end plate water inlet is lower than anode
The bipolar plates intake tunnel of side forms a water storehouse；The water outlet " pressure-stabilizing bin " is that pile end plate water outlet is higher than anode-side
Bipolar plates go out channel, form a water storehouse.
6. solid polymer electrolyte electrolytic bath according to claim 1, it is characterised in that: flow field avoiding structure is used,
It is mutually perpendicular to the access at yin-yang the two poles of the earth spatially, mass transfer access is made to form spatial offset between each other effectively to guarantee two
The independence of access.
7. solid polymer electrolyte electrolytic bath according to claim 1, it is characterised in that:
The flow field periphery side of anode-side is the flow field channels of cathode, the water of cathode and the hydrogen of generation and can be conveyed by runner
To flow field exits, and passes through anode-side and export；Two sides are equipped with anode flow field access up and down for cathode side flow field periphery, and water supply is from below
Access passes through the cathode side of bipolar plates, rises along anode side flow channels participate in cell reaction in the presence of hydraulic pressure；Water and generation
Oxygen is exported from the outlet above flow field, finally exports pile across remaining bipolar plates.
8. solid polymer electrolyte electrolytic bath according to claim 1, it is characterised in that: output end end plate and outside plate
Cathode output channel uses bias structure, is arranged along in line outlet bottom, facilitates the export of water, prevents electric tank cathode end product
Water.
9. solid polymer electrolyte electrolytic bath according to claim 1, it is characterised in that: it is designed using " face sealing ",
The shape size of sealing element is identical as the structural member surface contacted, and the hole of each access of electrolytic cell is reserved on the sealing element
Position, remaining area is all effective seal area.
10. solid polymer electrolyte electrolytic bath according to claim 1, it is characterised in that: electrolyzer electric pile structure packet
Include outside plate, end plate, pole plate, membrane electrode, bipolar plates and sealing element.
11. solid polymer electrolyte electrolytic bath according to claim 10, it is characterised in that: the material of the outside plate is
Stainless steel, the material of end plate are epoxy resin, and the material of the bipolar plates is Titanium, and the material of the sealing element is that silica gel is thin
Film；It is electrolysis region between pole plate and bipolar plates, uses membrane electrode as electrochemical reaction place.
12. solid polymer electrolyte electrolytic bath according to claim 10, it is characterised in that: pile clamping mode uses
Uniformly distributed bolt fastening pressurization, on-load pressure pass through nut tightening Torque Control.
13. solid polymer electrolyte electrolytic bath according to claim 10, it is characterised in that: input terminal pole plate when work
It connects positive, output end pole plate and connects cathode, input terminal is passed through high purity water, and hydrogen and oxygen are led from output end outside plate difference access respectively
Out.
14. solid polymer electrolyte electrolytic bath according to claim 2, it is characterised in that: membrane electrode it is anode-catalyzed
Layer, cathode catalysis layer are prepared by direct spraying technique.
15. solid polymer electrolyte electrolytic bath according to claim 2, it is characterised in that: wherein anode collector layer
For the modified porous titanium material in Adams fusion method surface, electrode surface is coated with IrO2Coating.
16. solid polymer electrolyte electrolytic bath according to claim 2, it is characterised in that: anode catalyst layer is by having
Ir, Ru or Ir of oxygen ability and corrosion resistance, the oxide of Ru or alloy and perfluorosulfonic acid ion exchanger resin is analysed to constitute.
17. solid polymer electrolyte electrolytic bath according to claim 2, it is characterised in that: proton exchange membrane is perfluor
Sulfonic acid ion exchange membrane.
18. solid polymer electrolyte electrolytic bath according to claim 2, it is characterised in that: cathode catalysis layer by Pt or
Pt/C or the corrosion-resistant catalyst of multicomponent alloy and perfluorosulfonic acid ion exchanger resin are constituted.
19. solid polymer electrolyte electrolytic bath according to claim 2, it is characterised in that: cathode current collector layer is thin
Carbon paper or porous titanium material after water process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610283587.0A CN105908210B (en) | 2016-04-29 | 2016-04-29 | A kind of solid polymer electrolyte electrolytic bath |
Applications Claiming Priority (1)
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| WO2018118877A1 (en) * | 2016-12-20 | 2018-06-28 | 3M Innovative Properties Company | Electrolyzer including a porous hydrophobic gas diffusion layer |
| CN110475907B (en) * | 2017-04-03 | 2022-08-23 | 3M创新有限公司 | Water electrolytic bath |
| CN109487292B (en) * | 2017-09-12 | 2021-04-02 | 上海纳诺巴伯纳米科技有限公司 | Method and device for generating hydrogen and oxygen by using membrane electrode |
| WO2020039218A1 (en) * | 2018-08-20 | 2020-02-27 | Thalesnano Energy Zrt. | Modular electrolyzer cell to generate gaseous hydrogen at high pressure and with high purity |
| CN109898094A (en) * | 2019-04-19 | 2019-06-18 | 吕志超 | A kind of high-pressure water electrolysis slot |
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| JP3766893B2 (en) * | 2002-05-30 | 2006-04-19 | 日立造船株式会社 | Hydrogen supply device using solid polymer water electrolyzer |
| JP4038453B2 (en) * | 2003-05-29 | 2008-01-23 | 大同メタル工業株式会社 | Membrane / electrode assembly for water electrolysis and water electrolyzer using the same |
| CN2683665Y (en) * | 2004-04-05 | 2005-03-09 | 石油大学(北京) | Double electrode plate type electrolytic reaction device |
| JP2005336517A (en) * | 2004-05-25 | 2005-12-08 | Jsr Corp | Water electrolysis cell |
| JP2006291329A (en) * | 2005-04-14 | 2006-10-26 | Daido Metal Co Ltd | Solid polymer membrane type water electrolyzer |
| CN1966777B (en) * | 2005-11-17 | 2011-01-19 | 上海空间电源研究所 | Water electrolysis device with proton exchange membrane |
| CN101457367A (en) * | 2007-12-14 | 2009-06-17 | 中国电子科技集团公司第十八研究所 | Water electrolyzer of solid polymer elecrolytes film |
| CN101768752A (en) * | 2008-12-30 | 2010-07-07 | 中国电子科技集团公司第十八研究所 | Solid polymer electrolyte membrane water electrolyzer |
| CN103184467A (en) * | 2011-12-28 | 2013-07-03 | 上海空间电源研究所 | Oxygen electrochemical purification device for proton exchange membrane |
| CN103806014B (en) * | 2014-01-24 | 2016-01-06 | 北京科技大学 | A kind of proton exchange membrane water electrolyzer device |
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