CN108878922A - A kind of thin layer graphene gas diffusion layers of fuel cell and preparation method - Google Patents
A kind of thin layer graphene gas diffusion layers of fuel cell and preparation method Download PDFInfo
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- CN108878922A CN108878922A CN201810651426.1A CN201810651426A CN108878922A CN 108878922 A CN108878922 A CN 108878922A CN 201810651426 A CN201810651426 A CN 201810651426A CN 108878922 A CN108878922 A CN 108878922A
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- 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
- H01M8/023—Porous and characterised by the material
- H01M8/0234—Carbonaceous material
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- 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
- H01M8/023—Porous and characterised by the material
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- 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
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Abstract
The invention belongs to fuel cell fields, it is proposed a kind of thin layer graphene gas diffusion layers of fuel cell and preparation method, during synthesizing super high molecular weight polyethylene, wherein by graphene dispersion, graphene uniform resides at ultra-high molecular weight polyethylene, it is further prepared into casting solution to smear and spray conductive agent dry powder in film surface, is further stretched in olefin vapor environment, stretch basement membrane thickness to 10-20 μm；The conductive agent of adherency is set to form micropore when stretching；High solvent of going out again is that basement membrane micropore occurs；Obtain a kind of thin layer graphene gas diffusion layers of fuel cell.By using doped graphene ultra-high molecular weight polyethylene dispersion polyethylene film, there is excellent electric conductivity, intensity and toughness, so as to ultrathin, and hole structure uniform, controllable, it is longitudinally provided express passway for aqueous vapor transmission, resistance to mass tranfer is greatly reduced；Microporous layers pore-forming is uniform, and aqueous vapor transmission is effectively made to cover entire active face.
Description
Technical field
The present invention relates to field of fuel cell technology, more particularly to a kind of thin layer graphene gas diffusion of fuel cell
Layer and preparation method.
Background technique
Due to non-renewable for traditional fossil fuel, and in use process caused by environmental pollution is serious, seek ring
The renewable sources of energy of guarantor's type are the severe tasks of 21 century facing mankind.Fuel cell (Fuel cell) is a kind of novel energy
Source technology directly converts electric energy for the chemical energy of fuel by electrochemical reaction, and fuel used is hydrogen, methanol and hydro carbons
Etc. hydrogen-rich materials, there are no pollution to the environment and with high energy efficiency and high power density.Fuel cell is as a kind of
Efficiently, environmental-friendly power generator becomes the hot spot of various countries' research and development in recent years.
Membrane electrode is the core component of fuel cell, and core component membrane electrode is by gas diffusion layers, Catalytic Layer and matter
Proton exchange is prepared by heat pressing process.Wherein, gas diffusion layers play support and urge between flow field and catalyst layer
Change the multiple actions such as layer, collected current, conduction gas and discharge water, realizes reaction gas and product water in flow field and Catalytic Layer
Between reallocation, be influence electrode performance one of critical component.Diffusion layer is usually made of basal layer and microporous layers, substrate
Layer is about 100-400 μ usually using porous carbon fiber paper, carbon-fiber cloth, carbon fiber non-woven material and carbon black paper, thickness
M primarily serves the effect of the Catalytic Layer of support microporous layers, and microporous layers are mainly one layer of carbon dust for improving basal layer pore structure,
Thickness is about 10-100 μm, it is therefore an objective to the contact resistance between Catalytic Layer and basal layer is reduced, so that runner gas and generation
Water uniformly distributes.
In order to improve the transmitting of reaction gas and liquid water in gas diffusion layers, reduce concentration polarization, it is desirable that gas diffusion
Layer must have suitable porosity, aperture size, suitable thickness and lower resistance, so that it is guaranteed that the water in electrode can
It maintains the abundant wetting of film to be avoided that between electrode " water is covered " again and reaches balance, can just effectively improve battery performance and significantly improve electricity
The output performance in pond.The thickness of gas diffusion layers is an important parameter for influencing diffusion layer performance, and diffusion layer is too thick, and gas passes
Path length is passed, resistance to mass tranfer, mass transfer serious polarization are increased；If diffusion layer is too thin, mechanical strength is affected, and can not only send out
Raw Catalyst percolation, and pore structure is easily damaged.
Existing carbon paper is that the gas diffusion layers thickness of substrate is thicker, further thin layer rear easy fracture, Chinese invention patent
Application number 201110428198.X discloses a kind of post-processing approach of fuel cell porous gas diffusion layer, and porous gas expands
It dissipates layer to be made of carbon cloth or carbon paper with regulating course, is handled by multiple temperature-pressure, gas diffusion layers thickness is reduced to 0.1-
0.2mm, porosity 20%-80%, 0.002-0.2 μm of average pore size, but repeatedly pressurized treatments reduce aperture, are unfavorable for liquid
The transport of water reduces the mass transfer of diffusion layer, increases manufacturing cost.
Chinese invention patent application number 201710156824.1 discloses a kind of fuel battery gas diffusion layer structure, including
The side of one basal layer and a microporous layers, basal layer has gas flow, and the other side is connected with microporous layers, and the material of basal layer is
Metal fiber felt has copper-graphite alkene complex phase film in microporous layers.The fuel battery gas diffusion layer of the invention reduces conventional carbon
The thickness of paper diffusion layer improves the mechanical strength of gas diffusion layers, and gas diffusion layers total quality is larger, is unfavorable for mitigating
Battery weight causes film layer to fall off in different film inter-layer bonding force deficiencies, reduces circulating battery service life.
It is therefore proposed that a kind of thin layer graphene gas diffusion layers of fuel cell, reduce existing gas diffusion layers thickness, mention
High gas diffusion layers intensity and toughness are of great significance to the thin layer development for pushing fuel cell.
Summary of the invention
For the big influence gas transmitting of existing fuel battery gas diffusion layer base material thickness, lacking for resistance to mass tranfer is increased
It falls into, for the good strength and durability for ensuring thin layer rear substrate, the present invention proposes a kind of thin layer graphene gas of fuel cell
Body diffused layer and preparation method have excellent electric conductivity, intensity and toughness, so that gas diffusion layers realize ultrathin, it is water
Gas transmission is longitudinally provided express passway, and resistance to mass tranfer is greatly reduced.
To solve the above problems, the present invention uses following technical scheme：
A kind of preparation method of the thin layer graphene gas diffusion layers of fuel cell, specific step is as follows：
（1）During ultrahigh molecular weight polyethylene is standby, graphene is uniformly dispersed with vinyl monomer in advance, polymerization obtains stone
The ultra-high molecular weight polyethylene of black alkene doping；Wherein graphene accounts for the 10% of doping ultra-high molecular weight polyethylene quality；
（2）The ultra-high molecular weight polyethylene that 10-20wt% graphene adulterates is mixed with 80-90wt% organic solvent, under room temperature
It is sufficiently stirred, obtains homogeneous polymerization thing liquid；
（3）Then the polymerization thing liquid is sprayed into conductive agent dry powder, further in olefin vapor at basement membrane in glass surface brushing
It is stretched in environment, conductive agent dry powder uniform adhesion forms conductive layer in film surface, and forms micropore with stretching；
（4）Further across drying, organic solvent is removed, basement membrane forms micropore, obtains thin layer graphene gas diffusion layers.
The present invention during ultra-high molecular weight polyethylene that vinyl monomer is formed by graphene dispersion wherein, can be compared with
Good makes graphene dispersion in ultra-high molecular weight polyethylene.The preparation process and method of ultra-high molecular weight polyethylene belong to known skill
Art.Such as using alkane solvents as decentralized medium, titanium compound is catalyst, and organo-aluminum compound is co-catalyst；Polymerization temperature
40 DEG C ~ 120 DEG C, vinyl monomer can occur polymerization and form ultra-high molecular weight polyethylene under the conditions of 0.1 ~ 3.0MPa of polymerization pressure.
Common decentralized medium alkane solvents are one of n-hexane, isohexane, hexane oil or solvent naphtha or more than one is mixed
Close object；Titanium compound is TiCl4、TiBr4One of；Organo-aluminum compound is triethyl aluminum, diethyl aluminum chloride, three isobutyls
Middle one kind of base aluminium, aluminium ethoxide or diethoxy aluminium chloride；Catalyst and co-catalyst weight proportion are 1: 2 ~ 15.By stone
Black alkene disperses with vinyl monomer in advance, and by polymerization process, graphene is effectively dispersed in ultra-high molecular weight polyethylene.
Preferably, step（2）Described in organic solvent be decahydronaphthalenes.
Preferably, step（3）In will be stretched in olefin vapor environment, pass through stretch and olefin vapor processing, shape
It is 10-20 μm at basement membrane thickness.
Preferably, step（3）Described in conductive agent dry powder be one of acetylene black, graphite, carbon nanotube；Preferably,
When spraying conductive agent dry powder, cooperation sprays the ptfe emulsion that suitable mass concentration is 15%.It will can preferably lead
Electric agent dry powder bonding.
Preferably, step（3）It is 3-20 μm that conductive layer thickness is formed after stretching.Aperture is 20-100nm.
Preferably, step（4）Basement membrane thickness after drying is 10-20 μm, and aperture is 100-200 μm；Drying temperature is
100-120 DEG C, drying time is 0.5-2 hours.
Carbon paper is that the gas diffusion layers thickness of substrate is thicker, influences gas transmitting, increases resistance to mass tranfer, further thin layer
The defect of easy fracture after change, the present invention is during synthesizing super high molecular weight polyethylene, wherein by graphene dispersion, graphite
Alkene uniformly resides at ultra-high molecular weight polyethylene, is further prepared into casting solution and smears and spray conductive agent dry powder in film surface,
It is further stretched in olefin vapor environment, stretches basement membrane thickness to 10-20 μm；Make the conductive dosage form of adherency when stretching
At micropore；High solvent of going out again is that basement membrane micropore occurs；Obtain a kind of thin layer graphene gas diffusion layers of fuel cell.This hair
The substrate of bright middle gas diffusion layers uses doped graphene ultra-high molecular weight polyethylene dispersion polyethylene film, has excellent conduction
Property, intensity and toughness be longitudinally provided express passway for aqueous vapor transmission, substantially so as to ultrathin, and hole structure uniform, controllable
Reduce resistance to mass tranfer；Microporous layers pore-forming is uniform, and aqueous vapor transmission is effectively made to cover entire active face.
The present invention further provides a kind of thin layer graphene gas diffusions of fuel cell prepared by the above method
Layer.
A kind of thin layer graphene gas diffusion layers of fuel cell of the present invention and preparation method, compared with prior art,
Prominent feature and excellent effect are：
1, the present invention proposes a kind of thin layer graphene gas diffusion layers of fuel cell and preparation method, synthesizes in super high molecular weight
Graphene-doped in the process, obtained substrate intensity is high, and ultrathin may be implemented and thereby reduce gas diffusion layer substrate thickness.
2, the present invention punches base material using laser drilling, pore structure uniform, controllable, to be aqueous vapor
Transmission is longitudinally provided express passway, further decreases resistance to mass tranfer, the microporous layers pore-forming that substrate material surface is formed is uniform, effectively
Ground makes aqueous vapor transmission cover entire active face.
3, gas diffusion layers prepared by the present invention have excellent electric conductivity, intensity and toughness, have preferable processability
It can, it is ensured that the good strength and durability of thin layer rear substrate.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
（1）Graphene is mixed with vinyl monomer and is uniformly dispersed, is dispersed in n-hexane, catalyst TiCl is added4, co-catalyst
Triethyl aluminum, temperature rise to 80 DEG C, and under the conditions of pressure 0.8MPa, vinyl monomer occurs polymerization and forms ultra-high molecular weight polyethylene.
Catalyst and co-catalyst weight proportion are 1: 2.Dosage is the 0.2% of vinyl monomer quality, by polymerization process, by graphene
It is effectively dispersed in ultra-high molecular weight polyethylene, obtains the ultra-high molecular weight polyethylene of graphene doping；Wherein graphene, which accounts for, mixes
The 10% of miscellaneous ultra-high molecular weight polyethylene quality；
（2）The ultra-high molecular weight polyethylene that 10wt% graphene adulterates is mixed with 90wt% organic solvent decahydronaphthalenes, room temperature
Under be sufficiently stirred, obtain homogeneous polymerization thing liquid；
（3）Then the polymerization thing liquid is sprayed conductive agent dry powder carbon nanotube, further existed in glass surface brushing at basement membrane
It is stretched in olefin vapor environment, is handled by stretching with olefin vapor, forming basement membrane thickness is 10 μm.Conductive agent dry powder is equal
The even film surface that is adhered to forms conductive layer, and forms micropore with stretching, and forming conductive layer thickness is 3 μm；Aperture is 20nm.
（4）Further across drying, drying temperature is 100 DEG C, and drying time is 0.5 hour, removes organic solvent, basement membrane
Micropore is formed, aperture is 100 μm, obtains thin layer graphene gas diffusion layers.
Embodiment 2
（1）Graphene is mixed with vinyl monomer and is uniformly dispersed, is dispersed in n-hexane, catalyst TiCl is added4, co-catalyst
Triethyl aluminum, temperature rise to 80 DEG C, and under the conditions of pressure 0.8MPa, vinyl monomer occurs polymerization and forms ultra-high molecular weight polyethylene.
Catalyst and co-catalyst weight proportion are 1: 2.Dosage is the 0.2% of vinyl monomer quality, by polymerization process, by graphene
It is effectively dispersed in ultra-high molecular weight polyethylene, obtains the ultra-high molecular weight polyethylene of graphene doping；Wherein graphene, which accounts for, mixes
The 10% of miscellaneous ultra-high molecular weight polyethylene quality；
（2）The ultra-high molecular weight polyethylene that 20wt% graphene adulterates is mixed with 80wt% organic solvent decahydronaphthalenes, room temperature
Under be sufficiently stirred, obtain homogeneous polymerization thing liquid；
（3）Then the polymerization thing liquid is sprayed into conductive agent dry powder acetylene black, further in alkene at basement membrane in glass surface brushing
It is stretched in hydrocarbon steam ambient, is handled by stretching with olefin vapor, forming basement membrane thickness is 20 μm.Conductive agent dry powder is equal
The even film surface that is adhered to forms conductive layer, and forms micropore with stretching, and forming conductive layer thickness is 3 μm；Aperture is 30nm.
（4）Further across drying, drying temperature is 100 DEG C, and drying time is 0.5 hour, removes organic solvent, basement membrane
Micropore is formed, aperture is 150 μm, obtains thin layer graphene gas diffusion layers.
Embodiment 3
（1）Graphene is mixed with vinyl monomer and is uniformly dispersed, is dispersed in n-hexane, catalyst TiCl is added4, co-catalyst
Triethyl aluminum, temperature rise to 80 DEG C, and under the conditions of pressure 0.8MPa, vinyl monomer occurs polymerization and forms ultra-high molecular weight polyethylene.
Catalyst and co-catalyst weight proportion are 1: 2.Dosage is the 0.2% of vinyl monomer quality, by polymerization process, by graphene
It is effectively dispersed in ultra-high molecular weight polyethylene, obtains the ultra-high molecular weight polyethylene of graphene doping；Wherein graphene, which accounts for, mixes
The 10% of miscellaneous ultra-high molecular weight polyethylene quality；
（2）The ultra-high molecular weight polyethylene that 15wt% graphene adulterates is mixed with 85wt% organic solvent decahydronaphthalenes, room temperature
Under be sufficiently stirred, obtain homogeneous polymerization thing liquid；
（3）Then the polymerization thing liquid is sprayed into conductive agent dry powder graphite at basement membrane in glass surface brushing, while spraying poly- four
Vinyl fluoride lotion makes graphite be in moisture state；It is further stretched in olefin vapor environment, is steamed by stretching with alkene
Vapour processing, forming basement membrane thickness is 20 μm.Conductive agent dry powder uniform adhesion forms conductive layer in film surface, and is formed with stretching micro-
Hole, forming conductive layer thickness is 5 μm；Aperture is 200nm.
（4）Further across drying, drying temperature is 100 DEG C, and drying time is 1 hour, removes organic solvent, basement membrane shape
At micropore, aperture is 100 μm, obtains thin layer graphene gas diffusion layers.
Embodiment 4
（1）Graphene is mixed with vinyl monomer and is uniformly dispersed, is dispersed in n-hexane, catalyst TiCl is added4, co-catalyst
Triethyl aluminum, temperature rise to 80 DEG C, and under the conditions of pressure 0.8MPa, vinyl monomer occurs polymerization and forms ultra-high molecular weight polyethylene.
Catalyst and co-catalyst weight proportion are 1: 2.Dosage is the 0.2% of vinyl monomer quality, by polymerization process, by graphene
It is effectively dispersed in ultra-high molecular weight polyethylene, obtains the ultra-high molecular weight polyethylene of graphene doping；Wherein graphene, which accounts for, mixes
The 10% of miscellaneous ultra-high molecular weight polyethylene quality；
（2）The ultra-high molecular weight polyethylene that 10wt% graphene adulterates is mixed with 90wt% organic solvent decahydronaphthalenes, room temperature
Under be sufficiently stirred, obtain homogeneous polymerization thing liquid；
（3）Then the polymerization thing liquid is sprayed conductive agent dry powder carbon nanotube, further existed in glass surface brushing at basement membrane
It is stretched in olefin vapor environment, is handled by stretching with olefin vapor, forming basement membrane thickness is 20 μm.Conductive agent dry powder
Uniform adhesion forms conductive layer in film surface, and forms micropore with stretching, and forming conductive layer thickness is 20 μm；Aperture is 50nm.
（4）Further across drying, drying temperature is 120 DEG C, and drying time is 2 hours, removes organic solvent, basement membrane shape
At micropore, aperture is 100 μm, obtains thin layer graphene gas diffusion layers.
Comparative example 1
（1）It by graphene and is dispersed in ultra-high molecular weight polyethylene, obtains the ultra-high molecular weight polyethylene of graphene doping；Its
Middle graphene accounts for the 10% of doping ultra-high molecular weight polyethylene quality；
（2）The ultra-high molecular weight polyethylene that 10wt% graphene adulterates is mixed with 90wt% organic solvent decahydronaphthalenes, room temperature
Under be sufficiently stirred, obtain homogeneous polymerization thing liquid；
（3）Then the polymerization thing liquid is sprayed conductive agent dry powder carbon nanotube, further existed in glass surface brushing at basement membrane
It is stretched in olefin vapor environment, is handled by stretching with olefin vapor, forming basement membrane thickness is 20 μm.Conductive agent dry powder
Uniform adhesion forms conductive layer in film surface, and forms micropore with stretching, and forming conductive layer thickness is 20 μm；Aperture is 50nm.
（4）Further across drying, drying temperature is 120 DEG C, and drying time is 2 hours, removes organic solvent, basement membrane shape
At micropore, aperture is 100 μm, obtains thin layer graphene gas diffusion layers.
Comparative example 1 directlys adopt graphene and super high molecular weight is dispersed.The graphene dispersion uniformity is poor.
Comparative example 2
It is conventional porous carbon paper gas diffusion layers by thickness 0.1mm.
The gas diffusion layers that embodiment 1-4, comparative example 1-2 are obtained under identical conditions with identical catalyst, proton
Exchange membrane hot pressing is membrane electrode, using hydrogen, air as reaction gas under the conditions of, discharge performance, initial output power density and company
The output power density of continuous reaction 72h is as shown in table 1.
Table 1：
Claims (7)
1. a kind of preparation method of the thin layer graphene gas diffusion layers of fuel cell, specific step is as follows：
（1）During ultrahigh molecular weight polyethylene is standby, graphene is uniformly dispersed with vinyl monomer in advance, polymerization obtains stone
The ultra-high molecular weight polyethylene of black alkene doping；Wherein graphene accounts for the 10% of doping ultra-high molecular weight polyethylene quality；
（2）The ultra-high molecular weight polyethylene that 10-20wt% graphene adulterates is mixed with 80-90wt% organic solvent, under room temperature
It is sufficiently stirred, obtains homogeneous polymerization thing liquid；
（3）Then the polymerization thing liquid is sprayed into conductive agent dry powder, further in olefin vapor at basement membrane in glass surface brushing
It is stretched in environment, conductive agent dry powder uniform adhesion forms conductive layer in film surface, and forms micropore with stretching；
（4）Further across drying, organic solvent is removed, basement membrane forms micropore, obtains thin layer graphene gas diffusion layers.
2. a kind of preparation method of the thin layer graphene gas diffusion layers of fuel cell, feature exist according to claim 1
In step（2）Described in organic solvent be decahydronaphthalenes.
3. a kind of preparation method of the thin layer graphene gas diffusion layers of fuel cell, feature exist according to claim 1
In step（3）In will be stretched in olefin vapor environment, by stretch and olefin vapor handle, forming basement membrane thickness is
10-20 μm。
4. a kind of preparation method of the thin layer graphene gas diffusion layers of fuel cell, feature exist according to claim 1
In step（3）Described in conductive agent dry powder be one of acetylene black, graphite, carbon nanotube；Preferably, in spraying conductive agent
When dry powder, cooperation sprays the ptfe emulsion that suitable mass concentration is 15%.Preferably conductive agent dry powder can be glued
Knot.
5. a kind of preparation method of the thin layer graphene gas diffusion layers of fuel cell, feature exist according to claim 1
In step（3）It is 3-20 μm that conductive layer thickness is formed after stretching.Aperture is 20-100nm.
6. a kind of preparation method of the thin layer graphene gas diffusion layers of fuel cell, feature exist according to claim 1
In step（4）Basement membrane thickness after drying is 10-20 μm, and aperture is 100-200 μm；Drying temperature is 100-120 DEG C, dry
Time is 0.5-2 hours.
7. a kind of thin layer graphene gas diffusion layers of fuel cell, it is characterised in that by any one of the claim 1-6 side
Method is prepared.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110247062A (en) * | 2019-06-17 | 2019-09-17 | 深圳市通用氢能科技有限公司 | A kind of preparation method of fuel cell membrane electrode |
| CN110277579A (en) * | 2019-06-17 | 2019-09-24 | 深圳市通用氢能科技有限公司 | A kind of membrane-membrane electrode for fuel cell structure, the preparation method of fuel cell membrane electrode and proton exchange film fuel battery system |
| CN110492109A (en) * | 2019-07-30 | 2019-11-22 | 同济大学 | A kind of fuel battery gas diffusion layer that wide cut humidity is adaptive |
| WO2021139948A1 (en) * | 2020-01-09 | 2021-07-15 | Robert Bosch Gmbh | Method for producing a fuel cell, and fuel cell |
| JP2022547289A (en) * | 2019-09-06 | 2022-11-11 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Gas diffusion layer for proton exchange membrane fuel cell and method for fabricating same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110247062A (en) * | 2019-06-17 | 2019-09-17 | 深圳市通用氢能科技有限公司 | A kind of preparation method of fuel cell membrane electrode |
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| CN110247062B (en) * | 2019-06-17 | 2021-07-27 | 深圳市通用氢能科技有限公司 | Preparation method of fuel cell membrane electrode |
| CN110492109A (en) * | 2019-07-30 | 2019-11-22 | 同济大学 | A kind of fuel battery gas diffusion layer that wide cut humidity is adaptive |
| JP2022547289A (en) * | 2019-09-06 | 2022-11-11 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Gas diffusion layer for proton exchange membrane fuel cell and method for fabricating same |
| US11817590B2 (en) | 2019-09-06 | 2023-11-14 | Robert Bosch Gmbh | Gas diffusion layer of proton exchange membrane fuel cell and preparation method of gas diffusion layer |
| JP7483866B2 (en) | 2019-09-06 | 2024-05-15 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Gas diffusion layer for proton exchange membrane fuel cell and method for making same |
| WO2021139948A1 (en) * | 2020-01-09 | 2021-07-15 | Robert Bosch Gmbh | Method for producing a fuel cell, and fuel cell |
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