CN109768298A - New proton exchange film fuel battery - Google Patents
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- CN109768298A CN109768298A CN201811525579.8A CN201811525579A CN109768298A CN 109768298 A CN109768298 A CN 109768298A CN 201811525579 A CN201811525579 A CN 201811525579A CN 109768298 A CN109768298 A CN 109768298A
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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
- Y02E60/50—Fuel cells
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Abstract
The invention discloses a kind of new proton exchange film fuel batteries, the Proton Exchange Membrane Fuel Cells is by realizing that water, electricity and gas passes in and out the channel of battery in diffusion layer design runner or the special troposphere of design, " going bipolar plates " or " bipolar plates remove runner " may be implemented, the contact transport resistance in battery between bipolar plates and diffusion layer is substantially reduced, to obtain the PEMFC of high efficiency, low cost, high service life.
Description
Technical field
The present invention relates to a proton exchanging film fuel battery (PEMFC), and in particular to one kind has novel electrode structure
PEMFC, in particular to improved by the electrode structure to existing PEMFC, design the diffusion layer or specially of included runner
The troposphere structure of door, can remove electrode plate or planarize electrode plate, substantially reduce bipolar plates and diffusion layer in battery
Between contact transport resistance belong to field of fuel cell technology to obtain high efficiency PEMFC.
Background technique
Hydrogen Energy is considered as solving the problems, such as that abandonment abandons electricity, reduces to petroleum interdependency, realizes energy and environmental problem collaboration
The ideal secondary energy sources of solution, Proton Exchange Membrane Fuel Cells (PEMFC) are considered as the final solution of new-energy automobile,
The highest attention and keen competition of Main Countries are caused.
Currently, the core of pemfc stack is MEA component and bipolar plates (traditional hydrogen fuel cell structure is as shown in Figure 1).
MEA be two single sides are coated with Nafion solution and Pt catalyst carbon fiber paper diffusion layer electrode be respectively placed in it is preprocessed
Proton exchange membrane two sides, catalyst is pressed into close to proton exchange membrane in certain temperature and pressure lower die.Bipolar plates are by pole
Plate and flow field composition, main positive effect include: conductive, thermally conductive, air guide, trapping and support membrane electrode, this kind of battery
Main feature be by runner design in bipolar plates.But under study for action, it was also found that the use of this structure bipolar plate
Many unfavorable negative effects can be brought to battery:
1) bipolar plates are the significant contributors of PEMFC manufacturing cost, manufacture difficulty, power density, corrosion failure etc..
There are mainly three types of common bipolar plates: graphite bi-polar plate, metal double polar plates, composite dual-electrode plates.Wherein graphite plate stream
The processing charges in road are expensive, account for 80% of its cost or more, and long processing time；Metal plate needs surface to make erosion shield
Processing, technical difficulty is big, and pin hole difficulty is anti-, is the short slab for influencing battery life.Graphite bi-polar plate thickness about 2~3.7mm, accounts for electricity
More than half of pond overall thickness, bipolar plates account for the 25%-50% of the 60%-80% of entire fuel cell pile weight, cost.Always
It, bipolar plates have the characteristics that difficulty of processing is big, cost of possession is high, account for volume and the specific gravity of quality is high in the battery.
2) bipolar plates cause carbon paper diffusion layer severely deformed, influence runner design and mass-and heat-transfer
Since the Young's modulus of bipolar plates is respectively 13000MPa, much larger than the Young's modulus of GDL 6MPa, and diffusion layer
Thickness is thin, and therefore, on the GDL that deformation mainly occurs caused by assembling pressure, porous structure can also be destroyed, this is to water
It generates and the variation of GDL porosity can have a huge impact, and then influence whether porosity, gas permeability, the matter of GDL
Properties, the water supply management such as amount diffusion coefficient, pyroconductivity and conductivity bring new problem；What MEA and bipolar plates contact generated
Thermal contact resistance accounts for the 65%-90% of entire thermal resistance, and the addition of certain PTFE and MPL also will increase thermal contact resistance.In short, bring
Synthtic price index is exactly the severe life time reduction and power output inefficiency of battery.
In conclusion at present in PEMFC although bipolar plates have undertaken the functions such as conductive, thermally conductive, air guide, support membrane electrode,
But great power density is also sacrificed, the transport resistance of respective interface is increased, and due to bipolar plates and other materials portion
The Young's modulus difference of part is huge, may cause the injury for being difficult to restore to other components during pressure assembling, seriously
Influence the service life of battery.
Summary of the invention
In order to improve the mass-and heat-transfer inside PEMFC, conventional batteries design flow passage structure generally in bipolar plates to improve
The convection function of inside battery, so that bipolar plate surfaces have just been correspondingly formed flow path portion and spine, in cell assembling processes then only
The spine for having area narrow directly contacts with diffusion layer, it is high not only to make transport resistance, but also increase local connect
Touch pressure, and because the elasticity modulus of bipolar plates and diffusion layer differs several orders of magnitude, pressure assembling process leads to system
Deformation concentrate on diffusion layer so that the porosity for the diffusion layer being in contact with bipolar plates spine is remarkably decreased, and be located at stream
The diffusion layer at road position is even pressed into runner, influences mass-transfer efficiency, diffusion layer deformation serious person heterogeneous even results in charcoal
Fiber is pressed down, and What is more can also affect on the service life of catalyst and film or even entire battery pile.In addition, bipolar plates are to fuel
The power density and life of battery also has vital influence.Currently used bipolar plates mainly have graphite plate, composite plate,
Metal plate.The former since thickness is big, brittleness is big, difficulty of processing is big, in battery power density and that cost is made is unfavorable；The latter by
It is big in anticorrosion difficulty, in battery cost is made and the service life is unfavorable.Certainly, especially included runner is current bipolar plates price
The main reason for high.PEMFC in the prior art electrode structure there are aiming at the problem that, the purpose of the present invention is be
A kind of novel Proton Exchange Membrane Fuel Cells (PEMFC) with completely new electrode structure is provided, by designing included runner
Diffusion layer or special troposphere structure, may be implemented " going bipolar plates " and " bipolar plates remove runner ", substantially reduce battery
Contact transport resistance between middle bipolar plates and diffusion layer, to obtain the PEMFC of high efficiency, low cost, high service life.
In order to achieve the above technical purposes, the present invention provides new proton exchange film fuel batteries comprising A, B, C, D
Or E structure:
A structure: being made of cathode electrode unit, anode unit and proton exchange membrane, between cathode electrode unit and anode unit and
Proton exchange membrane is respectively provided on the outside of cathode electrode unit and anode unit；The cathode electrode unit is urged by the cathode of diffusion layer and its two sides
Agent layer is constituted；The anode unit is made of the anode catalyst layer of diffusion layer and its two sides, and cathode electrode unit and anode list
The diffusion layer central location of member is equipped with runner；
B structure: being made of cathode electrode unit, anode unit and proton exchange membrane, between cathode electrode unit and anode unit and
Proton exchange membrane is respectively provided on the outside of cathode electrode unit and anode unit；The cathode electrode unit is by diffusion layer/troposphere/diffusion layer one
The cathode catalyst layer of body structure and its two sides is constituted；The anode unit is by diffusion layer/troposphere/diffusion layer integration knot
Structure and its anode catalyst layer of two sides are constituted；
C-structure: it is made of cathode plate, anode plate, anode unit, cathode electrode unit and proton exchange membrane；Cathode electrode unit and sun
Proton exchange membrane is set between pole unit, anode plate and cathode plate are respectively set on the outside of cathode electrode unit and anode unit；The yin
Pole unit includes troposphere, diffusion layer and cathode catalyst layer, and the proton exchange membrane side of diffusion layer is cathode catalyst layer, yin
Pole plate side is troposphere；The anode unit includes troposphere, diffusion layer and anode catalyst layer, the proton exchange of diffusion layer
Film side is anode catalyst layer, and anode plate side is troposphere；The cathode plate and anode plate are close to corresponding troposphere side
It is planar structure；
D structure: it is made of cathode plate, anode plate, anode unit, cathode electrode unit and proton exchange membrane；Cathode electrode unit and sun
Proton exchange membrane is set between pole unit, anode plate and cathode plate are respectively set on the outside of cathode electrode unit and anode unit；The yin
Pole unit includes diffusion layer and cathode catalyst layer, and the proton exchange membrane side of the diffusion layer is cathode catalyst layer；It is described
Anode unit includes diffusion layer and anode catalyst layer, and the proton exchange membrane side of the diffusion layer is anode catalyst layer；Institute
It states cathode plate and anode plate is slab construction；The diffusion layer central location of the anode unit and cathode electrode unit is equipped with stream
Road；
E structure: it is made of cathode plate, anode plate, anode unit, cathode electrode unit and proton exchange membrane；Cathode electrode unit and sun
Proton exchange membrane is set between pole unit, anode plate and cathode plate are respectively set on the outside of cathode electrode unit and anode unit；The yin
Pole unit includes diffusion layer and cathode catalyst layer, and the proton exchange membrane side of the diffusion layer is cathode catalyst layer；It is described
Anode unit includes diffusion layer and anode catalyst layer, and the proton exchange membrane side of the diffusion layer is anode catalyst layer；Institute
It states cathode plate and anode plate is slab construction；The diffusion layer of the anode unit is equipped with runner in anode plate side；The yin
The diffusion layer of pole unit is equipped with runner in cathode plate side.
Preferred scheme, in B structure, diffusion layer/troposphere/diffusion layer integral structure is right by two layers of diffusion layer and one layer
Fluid layer superposition is constituted, and middle layer is troposphere.It can be using troposphere as " sandwich " together with two layers of diffusion layer in forming process
Compression moulding, or be superimposed using troposphere as " sandwich " with two layers of diffusion layer close contact.
Preferred scheme, in C-structure, the troposphere and diffusion layer of cathode electrode unit and anode unit be integrated or
Troposphere and diffusion layer are in close contact.Troposphere and diffusion layer can be using being integrated into, or are first respectively prepared then two
Person's close contact in planar fashion.
More preferably scheme, the troposphere are with convection function macroporous structure.The troposphere of macroporous structure as gas,
Water passes in and out the convection channel of battery, and effect is similar to the effect of existing PEMFC electrode plate upper runner.The pore structure root of macroporous structure
It can reach gas and water convection current purpose according to situation with practical adjustments, this is that industry technical staff should be readily appreciated that and implement
's.
More preferably scheme, the troposphere are made of metal or Carbon graphite material, or netted by macromolecule or ceramics
It plates conductive layer and constitutes in object surface.It is specifically as follows carbon fiber, POROUS TITANIUM, titanium net, stainless (steel) wire etc. or titanizing or other gold
The carbon fiber etc. of category.
Cathode plate, anode plate, proton exchange membrane, cathode catalyst layer, the anode catalyst layer of novel PEMFC of the invention
And diffusion layer can be using conventional material and common process are processed into the prior art.Anode plate and cathode plate can be flat
Face structure is not necessarily to processing flow channel.
Runner or design troposphere can be arranged in novel PEMFC of the invention in diffusion layer, constitute included runner or
Diffusion layer with convection function, instead of the existing technique for setting runner in pole plate；So as to by the bipolar plates in PEMFC
It is designed to the plate being easily worked or even removes bipolar plates.The PEMFC of bipolar plates is gone to be combined into one like pole, by runner
(troposphere) is placed in the middle part of homopolarity diffusion layer, is respectively formed anode unit and cathode electrode unit, uses proton exchange membrane between unit
It separates, instead of the trapping function of bipolar plates, catalyst is located at the two sides of film, spends the mass transfer effect that bipolar platesization improve electrode
Rate and assembling property make electrode avoid in stress collection and deform to concentrate during pressure assembling.
By the way that runner or setting is arranged in diffusion layer center of inside position in the PEMFC of novel electrode structure of the invention
The troposphere of special construction, it can be configured to diffusion layer " diffusion layer+center flow channels (or troposphere, using " 2+1 " mould
Troposphere is clipped among diffusion layer by formula) " structure, it plays and transports the gentle pipeline of water；The design of this electrode structure can be gone
Fall bipolar plates or can be by bipolar plate design at planar structure.
In the PEMFC of novel electrode structure of the invention can also by diffusion layer close to electrode side be arranged runner or
The troposphere of special construction is arranged in person, is that (or troposphere, diffusion layer and troposphere use " 1+1 " mould by runner specifically
Formula) be designed at the one side that diffusion layer is contacted with bipolar plates, play and transport the gentle pipeline of water, diffusion layer in addition with Catalytic Layer and matter
Proton exchange contact still maintains planar structure on one side.The design of this electrode structure can be by bipolar plate design at planar junction
Structure.
The method of processing flow channel in diffusion layer of the invention is described below: mainly using die pressing, specific processing side
One of method are as follows: plate carbon paper diffusion layer is pressed after plate spreads formable layer, then using the punching block with runner,
Specific runner is formed in the one side of carbon paper, then carries out other subsequent techniques；The two of specific processing method are as follows: expand in plate
After dissipating formable layer, columnar mould is placed between two layers of plate diffusion layer, is then pressed into as one layer of diffusion layer, removes centre
Columnar mould, then carry out subsequent other technique.The method of assembled battery is similar with conventional method.
Compared with the prior art, technical solution of the present invention bring advantageous effects:
Novel PEMFC of the invention mainly improves the electrode structure of existing PEMFC, by designing included stream
The diffusion layer in road or special troposphere structure, can remove electrode plate or planarize electrode plate, substantially reduce in battery
Contact transport resistance between bipolar plates and diffusion layer, to obtain high efficiency PEMFC.Specifically have the beneficial effect that several points:
1) frictional force for improving gas and runner inner wall improves convection function and residence time of the gas inside runner,
To improve the utilization efficiency of gas；
2) diffusion layer and convection current combine, and increase the diffusion admittance of gas, shorten the diffusion path of gas, improve gas
Diffuser efficiency reduces the size design of runner；
3) thickness and weight of bipolar plates are generally reduced, so that the stress of inside battery and deformation tend to balance,
Improve the power density of battery；
4) contact resistance for reducing electrode structure, improves the power density of battery；
5) manufacture difficulty and manufacturing cost of bipolar plates are reduced or eliminated, to reduce the manufacturing cost of battery；
6) the failure site for reducing inside battery is conducive to improve battery life.
Detailed description of the invention
[Fig. 1] is the battery structure of existing tradition PEMFC；
The battery structure of [Fig. 2] PEMFC " included runner+go bipolar plates "；
The battery structure of [Fig. 3] PEMFC " included diffusion layer+go bipolar plates "；
The battery structure of [Fig. 4] PEMFC " planar bipolar plate+troposphere+diffusion layer "；
The battery structure of [Fig. 5] PEMFC " planar bipolar plate+included center flow channels diffusion layer "；
The battery structure of [Fig. 6] PEMFC " planar bipolar plate+surface carries runner diffusion layer ".
Specific embodiment
Following embodiment is intended in conjunction with attached drawing present invention be described in more detail content, rather than limits the guarantor of claim
Protect range.
It may be to battery based on arrangement and the structure design in above-mentioned current Proton Exchange Membrane Fuel Cells due to runner
The brings such as efficiency, service life, cost and manufacture difficulty seriously affect, and the present invention is efficient for battery smart and mass transfer, point
The mode for taking option A (" going bipolar plates ") and option b (" bipolar plates remove runner ") is not proposed, reconstructs the electricity of PEMFC
Pole structure:
Option A: go bipolar plates (for low-power battery)
In PEMFC, the modulus of bipolar plates and shared weight are far more than components other in battery, so that seriously affecting it
The power density of the deformation of its component and entire battery.Especially for low-power battery, the heat that battery generates is relatively fewer,
The heat transfer cooling function of bipolar plates is not just so prominent relatively, so, it is designed by the structure of optimization battery and material components
And design of material, cancellation bipolar plates, which be can yet be regarded as, improves the superior solution of battery efficiency.By improving the design of runner, to improve electricity
Contact condition and efficiency of transmission between each component in pond, the final power density and life for improving battery, reduce the system of each component
At cost and difficulty.
Bipolar plate structure is removed as a kind of completely new PEMFC electrode structure, originally belong to bipolar plates air guide, it is thermally conductive,
The transfer function and trapping function of conductive son etc., it is necessary to new load is found in remaining diffusion layer, Catalytic Layer, proton membrane
Body and structure undertake.Comprehensively consider and take following scheme: (1) in the runner of diffusion layer interior design specific structure, as water,
The convection channel of gas；Water in diffusion layer in runner is gentle can to spread in three-dimensional all-directional solid, increase diffusion admittance, contracting
Short diffusion path；(2) runner inner wall is due to being porous structure in diffusion layer, and rough surface, the frictional force generated to gas can
To significantly improve gas persistence and diffuser efficiency, it is possible to reduce the transmitting of inside battery amount and the back pressure of gas, to reduce
Outside gas supply accessory；(2) diffusion layer of runner two sides is connected as the integration at no interface, forms the cathode list of " back-to-back "
Member or anode unit, the main medium transmitted as gas diffusion and electric heating；Component contact interface and contact transport resistance are reduced,
Because the transport resistance at interface accounts for the 65%-80% of entire transport resistance；(3) it is handed between anode unit and cathode electrode unit with proton
Film trapping is changed, Catalytic Layer is located at the two sides of film, to reduce trapping interface；(4) using finite element method to above-mentioned electrode
Physical model carries out simulation calculating, and the optimal electrode structure of optimization high efficiency of transmission provides for the preparation research of subsequent electrode
Theoretical direction.
Option b: bipolar plates go runner (for high power battery)
Since the heat that the biggish battery of some power generates is more, need bipolar plates by heat derives.Currently, bipolar plates
Material be generally metal double polar plates, charcoal-graphite bi-polar plate, composite material double pole plate etc., the modulus and weight of these materials are remote
Greater than other materials in battery, the deformation quantity of battery each material components in an assembling process is caused to differ greatly, especially by runner
When being designed at bipolar plate surfaces, it is non-equilibrium it is consistent deformation to other components undoubtedly will cause injury cause output performance and
Service life has a greatly reduced quality；Secondly because bipolar plates are as rigid material, in its surface processing flow channel, material internal is generated non-flat
The internal stress of weighing apparatus is easy to cause the deformation of bipolar plate material, or even generates the fatefulue defects such as micropore crackle, leads to difficult processing
Degree increases, therefore runner (or troposphere) design in diffusion layer, is passed through the modulus and deformation of controlled material, Lai Youhua battery
Balance and structure, improve service life and the output performance of battery.
It is the runner for removing bipolar plate surfaces first, bipolar plates is made to the form of plane, runner (or troposphere) is set
Meter is in diffusion layer (surface or centre), or special plane convection is designed between planar diffusion layer and plane bipolar plates
Layer, both diffusion layer and troposphere material can be the same or different, and diffusion layer and troposphere can independently of each other can also be with
In being integrated into.Such design has the advantage that the difficulty of processing and processing cost of bipolar plates is greatly reduced in (1),
The thickness that bipolar plates can be further decreased simultaneously, improves the power density of battery；(2) spine of bipolar plates is greatly reduced to expansion
The impression damage effect of layer is dissipated, the uniformity of inside battery structure is improved, extends the service life；(3) gas of runner is to catalyst
Mass transfer is changed into three-dimensional by one-dimensional, and mass-transfer efficiency is substantially improved, back pressure needed for reducing gas, so that it is auxiliary to reduce external gas supply
Help component.
Embodiment 1
The battery structure of PEMFC " diffusion layer (going bipolar plates) of included runner ".Battery structure is as shown in Figure 2.
The battery structure is characterized mainly in that: removing the bipolar plates of conventional batteries, by runner design in diffusion layer (GDL)
Central part, the both sides of diffusion layer are respectively homopolarity Catalytic Layer (catalyst layer), collectively form cathode (cathode)
Or anode (anode) unit；It is separated between cathode electrode unit and anode unit with proton exchange membrane (membrane), periphery is by suitable
When encapsulation.Pile power density >=2.5kW/L of battery, and the service life of opposite conventional batteries is obviously prolonged.
Embodiment 2
The battery structure of PEMFC " carrying tropospheric diffusion layer (going bipolar plates) ".Battery structure is as shown in Figure 3.
The battery structure is characterized mainly in that: removing the bipolar plates of conventional batteries, troposphere is designed at diffusion layer
(GDL) central part, the both sides of diffusion layer are respectively homopolarity Catalytic Layer (catalyst layer), collectively form cathode
(cathode) or anode (anode) unit；It is separated between cathode electrode unit and anode unit with proton exchange membrane (membrane),
Encapsulation appropriate is passed through in periphery.Pile power density >=2.5kW/L of battery, and the service life of opposite conventional batteries is bright
It is aobvious to extend.
Embodiment 3
The battery structure of PEMFC " planar bipolar plate+troposphere+diffusion layer ".(upper figure is pair to battery structure as shown in Figure 4
Fluid layer/diffusion layer integral structure, the following figure are that troposphere+diffusion layer is in close contact).
The battery structure is characterized mainly in that: using plate bipolar plates, that is, bipolar plates and diffusion layer are close
It is processed into plane on one side, adds troposphere between bipolar plates and diffusion layer, it is troposphere carbon fiber, POROUS TITANIUM, titanium net, stainless
Steel mesh etc. is made, and Catalytic Layer is located at the two sides of proton exchange membrane, respectively constitutes anode and cathode, and periphery is by encapsulation appropriate
It can.Pile power density >=2.5kW/L of battery, and the service life of opposite conventional batteries is obviously prolonged.
Embodiment 4
The battery structure of PEMFC " planar bipolar plate+included center flow channels diffusion layer ".Battery structure is as shown in Figure 5.
The battery structure is characterized mainly in that: using plate bipolar plates, that is, bipolar plates and diffusion layer are close
It is processed into plane on one side, by runner design in the central part of diffusion layer (GDL), Catalytic Layer is located at the two sides of proton exchange membrane,
Anode and cathode is respectively constituted, encapsulation appropriate is passed through in periphery.Pile power density >=2.5kW/L of battery, and it is opposite
The service life of conventional batteries is obviously prolonged.
Embodiment 5
The battery structure of PEMFC " planar bipolar plate+surface carries runner diffusion layer ".Battery structure is as shown in Figure 6.
The battery structure is characterized mainly in that: using plate bipolar plates, that is, contact bipolar plates with diffusion layer
It is processed into plane on one side, by runner design in the side that diffusion layer (GDL) is contacted with bipolar plates, Catalytic Layer is located at proton exchange membrane
Two sides, respectively constitute anode and cathode, encapsulation appropriate is passed through in periphery.Pile power density >=2.5kW/L of battery,
And the service life of opposite conventional batteries is obviously prolonged.
Claims (5)
1. new proton exchange film fuel battery, it is characterised in that: including A, B, C, D or E structure:
A structure: being made of cathode electrode unit, anode unit and proton exchange membrane, between cathode electrode unit and anode unit and cathode
Proton exchange membrane is respectively provided on the outside of unit and anode unit；The cathode electrode unit is by diffusion layer and its cathod catalyst of two sides
Layer is constituted；The anode unit is made of the anode catalyst layer of diffusion layer and its two sides, and cathode electrode unit and anode unit
Diffusion layer central location is equipped with runner；
B structure: being made of cathode electrode unit, anode unit and proton exchange membrane, between cathode electrode unit and anode unit and cathode
Proton exchange membrane is respectively provided on the outside of unit and anode unit；The cathode electrode unit is by diffusion layer/troposphere/diffusion layer integration
The cathode catalyst layer of structure and its two sides is constituted；The anode unit by diffusion layer/troposphere/diffusion layer integral structure and
The anode catalyst layer of its two sides is constituted；
C-structure: it is made of cathode plate, anode plate, anode unit, cathode electrode unit and proton exchange membrane；Cathode electrode unit and anode list
Proton exchange membrane is set between member, anode plate and cathode plate are respectively set on the outside of cathode electrode unit and anode unit；The cathode list
Member includes troposphere, diffusion layer and cathode catalyst layer, and the proton exchange membrane side of diffusion layer is cathode catalyst layer, cathode plate
Side is troposphere；The anode unit includes troposphere, diffusion layer and anode catalyst layer, the proton exchange membrane one of diffusion layer
Side is anode catalyst layer, and anode plate side is troposphere；The cathode plate and anode plate are close to corresponding troposphere side
Planar structure；
D structure: it is made of cathode plate, anode plate, anode unit, cathode electrode unit and proton exchange membrane；Cathode electrode unit and anode list
Proton exchange membrane is set between member, anode plate and cathode plate are respectively set on the outside of cathode electrode unit and anode unit；The cathode list
Member includes diffusion layer and cathode catalyst layer, and the proton exchange membrane side of the diffusion layer is cathode catalyst layer；The anode
Unit includes diffusion layer and anode catalyst layer, and the proton exchange membrane side of the diffusion layer is anode catalyst layer；The yin
Pole plate and anode plate are slab construction；The diffusion layer central location of the anode unit and cathode electrode unit is equipped with runner；
E structure: it is made of cathode plate, anode plate, anode unit, cathode electrode unit and proton exchange membrane；Cathode electrode unit and anode list
Proton exchange membrane is set between member, anode plate and cathode plate are respectively set on the outside of cathode electrode unit and anode unit；The cathode list
Member includes diffusion layer and cathode catalyst layer, and the proton exchange membrane side of the diffusion layer is cathode catalyst layer；The anode
Unit includes diffusion layer and anode catalyst layer, and the proton exchange membrane side of the diffusion layer is anode catalyst layer；The yin
Pole plate and anode plate are slab construction；The diffusion layer of the anode unit is equipped with runner in anode plate side；The cathode list
The diffusion layer of member is equipped with runner in cathode plate side.
2. new proton exchange film fuel battery according to claim 1, it is characterised in that: in B structure, diffusion layer/right
Fluid layer/diffusion layer integral structure is superimposed with one layer of troposphere by two layers of diffusion layer and is constituted, and middle layer is troposphere.
3. new proton exchange film fuel battery according to claim 1, it is characterised in that: in C-structure, cathode electrode unit and
The troposphere and diffusion layer of anode unit are integrated or troposphere and diffusion layer are in close contact.
4. described in any item new proton exchange film fuel batteries according to claim 1~3, it is characterised in that: the convection current
Layer is with convection function macroporous structure.
5. new proton exchange film fuel battery according to claims 1 to 4, it is characterised in that: the troposphere, diffusion
Layer is made of metal or Carbon graphite material, or is made of macromolecule or ceramic web surface plating conductive layer.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110212214A (en) * | 2019-06-27 | 2019-09-06 | 安徽元隽氢能源研究所有限公司 | Bipolar plate flow field structure and bipolar plates in a kind of fuel cell |
| CN113937327A (en) * | 2020-06-28 | 2022-01-14 | 未势能源科技有限公司 | Membrane electrode assembly, fuel cell unit, fuel cell, and vehicle |
| TWI769113B (en) * | 2021-11-18 | 2022-06-21 | 元智大學 | Fuel cell and fuel cell manufacturing method |
| CN114824312A (en) * | 2022-04-14 | 2022-07-29 | 广东氢发新材料科技有限公司 | Gas diffusion layer with flow channel and preparation method thereof |
| TWI773589B (en) * | 2021-11-18 | 2022-08-01 | 元智大學 | Fuel cell and fuel cell manufacturing method |
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| CN113937327A (en) * | 2020-06-28 | 2022-01-14 | 未势能源科技有限公司 | Membrane electrode assembly, fuel cell unit, fuel cell, and vehicle |
| TWI769113B (en) * | 2021-11-18 | 2022-06-21 | 元智大學 | Fuel cell and fuel cell manufacturing method |
| TWI773589B (en) * | 2021-11-18 | 2022-08-01 | 元智大學 | Fuel cell and fuel cell manufacturing method |
| CN114824312A (en) * | 2022-04-14 | 2022-07-29 | 广东氢发新材料科技有限公司 | Gas diffusion layer with flow channel and preparation method thereof |
| CN114824312B (en) * | 2022-04-14 | 2024-06-07 | 广东氢发新材料科技有限公司 | Gas diffusion layer with flow channels and preparation method thereof |
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