WO2005018015A2 - Spatially varying diffusion media and devices incorporating the same - Google Patents
Spatially varying diffusion media and devices incorporating the same Download PDFInfo
- Publication number
- WO2005018015A2 WO2005018015A2 PCT/US2004/017841 US2004017841W WO2005018015A2 WO 2005018015 A2 WO2005018015 A2 WO 2005018015A2 US 2004017841 W US2004017841 W US 2004017841W WO 2005018015 A2 WO2005018015 A2 WO 2005018015A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- region
- mesoporous layer
- diffusion media
- low
- substrate
- Prior art date
Links
- 238000009792 diffusion process Methods 0.000 title claims abstract description 97
- 239000000758 substrate Substances 0.000 claims abstract description 66
- 239000000376 reactant Substances 0.000 claims abstract description 33
- 239000000446 fuel Substances 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 16
- 238000012546 transfer Methods 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- -1 carbon fullerenes Chemical class 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 2
- 229910003472 fullerene Inorganic materials 0.000 claims description 2
- 239000002041 carbon nanotube Substances 0.000 claims 1
- 229910021393 carbon nanotube Inorganic materials 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 229910001868 water Inorganic materials 0.000 abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 239000012528 membrane Substances 0.000 description 6
- 230000005611 electricity Effects 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229920002313 fluoropolymer Polymers 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920002620 polyvinyl fluoride Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical class C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- 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
- H01M8/0241—Composites
- H01M8/0245—Composites in the form of layered or coated products
-
- 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
-
- 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
- H01M8/0239—Organic resins; Organic polymers
-
- 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
- H01M8/0241—Composites
-
- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
-
- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04291—Arrangements for managing water in solid electrolyte fuel cell systems
-
- 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
Definitions
- the present invention relates to the design and manufacture of diffusion media and, more particularly, to diffusion media for use in electrochemical cells where water management is a significant design issue.
- a diffusion media and a scheme for spatially varying the parameters of the diffusion media to address issues related to water management in electrochemical cells and other devices employing the diffusion media are provided.
- a device is configured to convert a hydrogenous fuel source to electrical energy.
- the device comprises an electrochemical conversion assembly, first and second reactant inputs, first and second product outputs, and first and second diffusion media.
- the electrochemical conversion assembly configured to partition the device into first and second flow field regions.
- the first reactant input and the first product output are in communication with the first flow field region
- the first diffusion media comprises a porous diffusion media substrate configured to pass multiphase reactants between the first flow field region and the electrochemical conversion assembly.
- the second reactant input and the second product output are in communication with the second flow field region.
- the second diffusion media comprises a porous diffusion media substrate configured to pass multiphase reactants between the second flow field region and the electrochemical conversion assembly.
- the device is configured such that at least one of the first and second diffusion media comprise a region subject to relatively high H 2 O concentrations and a region subject to relatively low H 2 O concentrations.
- a mesoporous layer is carried along at least a portion of a major face of one of the first and second diffusion media substrates and comprises a hydrophilic carbonaceous component and a hydrophobic component.
- the mesoporous layer occupies a substantially greater portion of one of the high H 2 O region and the low H 2 O region relative to the other of the high H O region and the low H 2 O region.
- the mesoporous layer comprises a hydrophilic carbonaceous component and a hydrophobic component.
- At least one of the first and second diffusion media substrates comprises a relatively high porosity region and a relatively low porosity region.
- Fig. 1 is a schematic illustration of a fuel cell incorporating a porous diffusion media according to the present invention
- FIG. 1 a fuel cell 10 incorporating a porous diffusion media 20 according to the present invention is illustrated.
- the fuel cell 10 comprises an electrochemical conversion assembly in the form of a membrane electrode assembly 30 interposed between an anode flow field region 40 and a cathode flow field region 50 of the fuel cell 10. It is contemplated that the flow fields 40, 50 and the electrochemical conversion assembly may take a variety of conventional or yet to be developed forms without departing from the scope of the present invention.
- the electrochemical conversion assembly comprises a membrane electrode assembly 30 including respective catalytic electrode layers 32 and an ion exchange membrane 34.
- the present invention is not directed to the specific mechanisms by which the fuel cell 10 converts a hydrogenous fuel source to electrical energy. Accordingly, in describing the present invention, it is sufficient to note that the fuel cell 10 includes, among other things, an electrochemical conversion assembly configured to partition the device into the first and second flow field regions 40, 50, and a first reactant input R ⁇ I and a first product output R O U T I in communication with the first flow field region 40.
- the first diffusion media 20 comprises a porous diffusion media substrate 22 that passes multiphase reactants between the first flow field region 40 and the membrane electrode assembly 30.
- a second reactant input a second product output R O U T 2 are in communication with the second flow field region 50 and a second diffusion media 20 passes reactants between the second flow field region 50 and the membrane electrode assembly 30.
- the first reactant input Ri may carry a humidified hydrogenous fuel mixture to an anode side of the fuel cell 10
- the second reactant input R 2 may carry a humidified oxidant mixture to the cathode side of the fuel cell 10
- the reactant outputs R O U T may carry products of the reactions on each side of the fuel cell 10.
- a particular electrochemical conversions device may be configured such that one or both of the diffusion media comprise a region that is subject to relatively high operational H 2 O concentrations and a region that is subject to relatively low operational H 2 O concentrations.
- the region of a cathode side diffusion media proximate the second product output R OUT 2. e.g., the cathode exit, may be required to transfer a greater volume of water than the region proximate the second reactant input R ⁇ 2 , e.g., the cathode input.
- the region of an anode side diffusion media proximate the first product output R OUT 1 . e.g., the anode exit, may be operated under dryer conditions than the region proximate the first reactant input R HM _, e.g., the anode input.
- the diffusion media 20 illustrated in Figs. 2-9 present a means for addressing such water management issues. Specifically, referring Figs. 2 and 3, a mesoporous layer 24, which may be carried along either of the major faces 21, 23 of the diffusion media substrates 20, is positioned to occupy a substantially greater portion of either the high H 2 O region (see Fig. 2) or the low H2O region (see Fig. 3). Referring to the embodiment of Fig.
- the mesoporous layer 24 occupies a substantially greater portion of, or is confined to, the high H 2 O region, then the mesoporous layer should be configured to enhance H 2 O transfer properties of the diffusion media substrate 22.
- the mesoporous layer 24 occupies a substantially greater portion of, or is confined to, the low H 2 O region, then the mesoporous layer should be configured to diminish the H 2 O transfer properties of the diffusion media substrate 22.
- a variety of mesoporous layer parameters including porosity, thickness, degree of substrate infiltration, etc., may be optimized for either enhancing or diminishing water transfer properties of the layer.
- the porosity of the mesoporous layer 24 may be generally higher when the layer is utilized in the high H 2 O region, where increased wicking is required.
- the porosity of the layer 24 may be increased by providing about 80 wt% of the carbonaceous component when used in the high H 2 O region, as compared to between about 90 wt% and about 95 w% of the carbonaceous component in the low H 2 O region.
- Suitable carbon particles for the mesoporous layer 24 include, for example, carbon black, graphite, carbon fibers, fullerenes and nanotubules.
- the hydrophilic carbonaceous component of the mesoporous layer 24 may comprise a minor portion of carbon graphite to enhance electrical conductivity.
- the hydrophobic component may comprise a fluorinated polymer, e.g., polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), a combination of fluorinated polymers, or any other suitable hydrophobic material or combination of materials.
- the hydrophilic carbonaceous component of the mesoporous layer 24 in the high H 2 0 regions may comprises a moderate surface area carbon characterized by a surface area of between about 60 m 2 /g and about 300 m 2 /g and a mean particle size of between about 15 nm and about 70 nm.
- the hydrophilic carbonaceous component may comprise a high surface area carbon characterized by a surface area of above about 750 m /g and a mean particle size of less than about 20 nm.
- the mesoporous layer infiltrates the diffusion media substrate to a depth of less than lO ⁇ m when used in the high H 2 O regions and to a depth of less than 25 ⁇ m when used in the low H 2 O regions.
- a plurality of mesoporous layers 24A, 24B are carried along respective portions of a major face 21 of the diffusion media substrates 22.
- the mesoporous layer 24A is configured to enhance the H 2 O transfer properties of the diffusion media substrate 22 and, as such, occupies the high H 2 O region.
- the mesoporous layer 24B is configured to diminish the H 2 O transfer properties of the diffusion media substrate 22 and, as such, occupies a substantially greater portion of the low H 2 O region. As a result, water will tend to be wicked away from the high H 2 O region and retained in the low H 2 O region - improving device performance.
- Figs. 5-7 illustrate embodiments of the present invention where the mesoporous layer
- a substantially uniform mesoporous layer is carried along the major face 21 of the diffusion media substrate 22 and the diffusion media substrate 22 is provided with a relatively high porosity region 22A in the high H 2 O region of the diffusion media and a relatively low porosity region 22B in the low H 2 O region of the diffusion media.
- the diffusion media substrate may comprise a carbonaceous fibrous matrix, e.g., carbon fiber paper and may be characterized by a porosity of above about 70% in the high H 2 O regions and between about 70% and about 75% in the low H 2 O regions.
- the substrate may define a thickness of between about lOO ⁇ m and about 300 ⁇ m in the high H 2 0 regions and a thickness of between about 190 ⁇ m and about 300 ⁇ m in the low H 2 0 regions. Further, the substrate may be characterized by a mean pore size of above about 20 ⁇ m in the high H 2 0 regions and less than about 25 ⁇ m in the low H 2 0 regions.
- the mesoporous layer 24 may be configured such that it occupies substantial portions of both the high H 2 O region and the low H 2 O region.
- the mesoporous layer 24 is provided with a region of increased porosity relative to a remaining portion of the mesoporous layer.
- the region of increased porosity of the mesoporous layer 24 is defined by a plurality of megapores 26 formed in the layer 24. The region of increased porosity occupies the high H 2 O region of the diffusion media while the remaining portion of the mesoporous layer 24 occupies the low H 2 O region of the diffusion media.
- the mesoporous layer 24 is more effective in addressing water management issues if it is positioned against the membrane electrode assembly 30 of the fuel cell 10, as opposed to being positioned to face the flow field of the cell 10. Nevertheless, it is contemplated that the diffusion media substrate 22 may carry the mesoporous layer 24 along either major face 21, 23 of the substrate 22 regardless of which face is positioned against the membrane electrode assembly 30. Further, the mesoporous layer 24 at least partially infiltrates the diffusion media substrate 22.
- a fuel cell system incorporating diffusion media may be configured to operate as a source of power for a vehicle 100.
- fuel from a fuel storage unit 120 may be directed to the fuel cell assembly 110 configured to convert fuel, e.g., H2, into electricity.
- the electricity generated is subsequently used as a motive power supply for the vehicle 100 where the electricity is converted to torque and vehicular translational motion.
- terms like "preferably,” “commonly,” and “typically” are not utilized herein to limit the scope of the claimed invention or to imply that certain features are critical, essential, or even important to the structure or function of the claimed invention. Rather, these terms are merely intended to highlight alternative or additional features that may or may not be utilized in a particular embodiment of the present invention.
- a “device” is utilized herein to represent a combination of components and individual components, regardless of whether the components are combined with other components.
- a “device” according to the present invention may comprise a diffusion media, a fuel cell incorporating a diffusion media according to the present invention, a vehicle incorporating a fuel cell according to the present invention, etc.
- the term “substantially” is utilized herein to represent the inherent degree of uncertainty that may be attributed to any quantitative comparison, value, measurement, or other representation.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Inert Electrodes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006521821A JP4695079B2 (en) | 2003-07-28 | 2004-06-07 | Diffusion medium whose characteristics change spatially and apparatus incorporating the medium |
DE112004001393T DE112004001393B4 (en) | 2003-07-28 | 2004-06-07 | Fuel cell containing a spatially varying diffusion medium and use of such a fuel cell in a vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/628,318 US7332240B2 (en) | 2003-07-28 | 2003-07-28 | Spatially varying diffusion media and devices incorporating the same |
US10/628,318 | 2003-07-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005018015A2 true WO2005018015A2 (en) | 2005-02-24 |
WO2005018015A3 WO2005018015A3 (en) | 2005-05-06 |
Family
ID=34103361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/017841 WO2005018015A2 (en) | 2003-07-28 | 2004-06-07 | Spatially varying diffusion media and devices incorporating the same |
Country Status (5)
Country | Link |
---|---|
US (1) | US7332240B2 (en) |
JP (1) | JP4695079B2 (en) |
CN (1) | CN100585926C (en) |
DE (1) | DE112004001393B4 (en) |
WO (1) | WO2005018015A2 (en) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050036018A1 (en) * | 2001-05-23 | 2005-02-17 | Hirokazu Yanagihara | Ink set for inket printing |
US20050074595A1 (en) * | 2003-10-03 | 2005-04-07 | Lam Robert C. | Friction material containing partially carbonized carbon fibers |
US20050075021A1 (en) * | 2003-10-03 | 2005-04-07 | Lam Robert C. | High performance, durable, deposit friction material |
US20060204831A1 (en) * | 2004-01-22 | 2006-09-14 | Yan Susan G | Control parameters for optimizing MEA performance |
US8021744B2 (en) * | 2004-06-18 | 2011-09-20 | Borgwarner Inc. | Fully fibrous structure friction material |
US8603614B2 (en) * | 2004-07-26 | 2013-12-10 | Borgwarner Inc. | Porous friction material with nanoparticles of friction modifying material |
US7429418B2 (en) | 2004-07-26 | 2008-09-30 | Borgwarner, Inc. | Porous friction material comprising nanoparticles of friction modifying material |
US7399549B2 (en) * | 2005-04-22 | 2008-07-15 | Gm Global Technology Operations, Inc. | Altering zeta potential of dispersions for better HCD performance and dispersion stability |
US7806975B2 (en) * | 2005-04-26 | 2010-10-05 | Borgwarner Inc. | Friction material |
US8211589B2 (en) * | 2005-10-04 | 2012-07-03 | GM Global Technology Operations LLC | Water transport features for diffusion media |
EP1943300B1 (en) * | 2005-11-02 | 2016-07-06 | BorgWarner, Inc. | Carbon friction materials |
US8007943B2 (en) * | 2005-11-03 | 2011-08-30 | GM Global Technology Operations LLC | Cascaded stack with gas flow recycle in the first stage |
US20070178341A1 (en) * | 2006-01-27 | 2007-08-02 | Christian Wieser | Gas channel coating with water-uptake related volume change for influencing gas velocity |
US7955750B2 (en) * | 2006-02-21 | 2011-06-07 | GM Global Technology Operations LLC | Controlled electrode overlap architecture for improved MEA durability |
US8343452B2 (en) * | 2006-03-20 | 2013-01-01 | GM Global Technology Operations LLC | Acrylic fiber bonded carbon fiber paper as gas diffusion media for fuel cell |
US20090048369A1 (en) * | 2006-03-29 | 2009-02-19 | Newcomb Timothy P | Friction Materials Made With Resins Containing Polar Functional Groups |
US7687185B2 (en) * | 2006-07-24 | 2010-03-30 | Gm Global Technology Operations, Inc. | Using sacrificial material to mitigate catalyst support corrosion in fuel cell electrode |
US7569299B2 (en) | 2006-07-25 | 2009-08-04 | Gm Global Technology Operations, Inc. | Multi-component fuel cell gasket for low temperature sealing and minimal membrane contamination |
US7749632B2 (en) | 2006-07-27 | 2010-07-06 | Gm Global Technology Operations, Inc. | Flow shifting coolant during freeze start-up to promote stack durability and fast start-up |
US7883810B2 (en) | 2006-11-09 | 2011-02-08 | GM Global Technology Operations LLC | Slow purge for improved water removal, freeze durability, purge energy efficiency and voltage degradation due to shutdown/startup cycling |
US7829230B2 (en) | 2007-07-17 | 2010-11-09 | Gm Global Technology Operations, Inc. | Method for optimizing diffusion media with spatially varying mass transport resistance |
EP2028221A1 (en) * | 2007-08-03 | 2009-02-25 | Borgwarner, Inc. | Friction material with silicon |
JP5432443B2 (en) * | 2007-09-25 | 2014-03-05 | Jx日鉱日石エネルギー株式会社 | Membrane electrode assembly and fuel cell |
US8168340B2 (en) | 2007-11-07 | 2012-05-01 | GM Global Technology Operations LLC | Water removal features for PEMfc stack manifolds |
US8409769B2 (en) * | 2007-12-07 | 2013-04-02 | GM Global Technology Operations LLC | Gas diffusion layer for fuel cell |
KR101576311B1 (en) * | 2007-12-11 | 2015-12-10 | 발라드 파워 시스템즈 인크. | Tailoring liquid water permeability of diffusion layers in fuel cell stacks |
JP2009158202A (en) * | 2007-12-25 | 2009-07-16 | Toshiba Corp | Fuel cell |
JP4665978B2 (en) * | 2008-03-10 | 2011-04-06 | トヨタ自動車株式会社 | Fuel cell and fuel cell system |
DE102008013907B4 (en) | 2008-03-12 | 2016-03-10 | Borgwarner Inc. | Frictionally-locking device with at least one friction plate |
DE102009030506A1 (en) * | 2008-06-30 | 2009-12-31 | Borgwarner Inc., Auburn Hills | friction materials |
US20100028750A1 (en) * | 2008-08-04 | 2010-02-04 | Gm Global Technology Operations, Inc. | Gas diffusion layer with lower gas diffusivity |
US20100028744A1 (en) * | 2008-08-04 | 2010-02-04 | Gm Global Technology Operations, Inc. | Gas diffusion layer with lower gas diffusivity |
US8177884B2 (en) * | 2009-05-20 | 2012-05-15 | United Technologies Corporation | Fuel deoxygenator with porous support plate |
KR101240973B1 (en) | 2010-09-29 | 2013-03-11 | 기아자동차주식회사 | Locally hydrophilic gas diffusion layer and fuel cell stack comprising the same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6024848A (en) * | 1998-04-15 | 2000-02-15 | International Fuel Cells, Corporation | Electrochemical cell with a porous support plate |
US6350539B1 (en) * | 1999-10-25 | 2002-02-26 | General Motors Corporation | Composite gas distribution structure for fuel cell |
WO2004066427A1 (en) * | 2003-01-15 | 2004-08-05 | General Motors Corporation | Diffusion layer and fuel cells |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62226583A (en) * | 1986-03-27 | 1987-10-05 | Mitsubishi Electric Corp | Electrode-matrix combined body of fuel cell and its manufacture |
US5272017A (en) * | 1992-04-03 | 1993-12-21 | General Motors Corporation | Membrane-electrode assemblies for electrochemical cells |
US5350643A (en) * | 1992-06-02 | 1994-09-27 | Hitachi, Ltd. | Solid polymer electrolyte type fuel cell |
US5840438A (en) * | 1995-08-25 | 1998-11-24 | Ballard Power Systems Inc. | Electrochemical fuel cell with an electrode substrate having an in-plane nonuniform structure for control of reactant and product transport |
US5620807A (en) * | 1995-08-31 | 1997-04-15 | The Dow Chemical Company | Flow field assembly for electrochemical fuel cells |
US5952119A (en) * | 1997-02-24 | 1999-09-14 | Regents Of The University Of California | Fuel cell membrane humidification |
JP3773325B2 (en) * | 1997-03-17 | 2006-05-10 | ジャパンゴアテックス株式会社 | Gas diffusion layer material for polymer electrolyte fuel cell and its joined body |
JP3583897B2 (en) * | 1997-04-11 | 2004-11-04 | 三洋電機株式会社 | Fuel cell |
JP3929146B2 (en) * | 1997-11-07 | 2007-06-13 | 松下電器産業株式会社 | Polymer electrolyte fuel cell system |
JPH11154523A (en) * | 1997-11-19 | 1999-06-08 | Fuji Electric Co Ltd | Cell and stack of solid polymer electrolyte fuel cell |
US6103077A (en) * | 1998-01-02 | 2000-08-15 | De Nora S.P.A. | Structures and methods of manufacture for gas diffusion electrodes and electrode components |
US5998058A (en) * | 1998-04-29 | 1999-12-07 | International Fuel Cells Corporation | Porous support layer for an electrochemical cell |
DE19840517A1 (en) * | 1998-09-04 | 2000-03-16 | Manhattan Scientifics Inc | Gas diffusion structure perpendicular to the membrane of polymer electrolyte membrane fuel cells |
JP2000182625A (en) * | 1998-12-11 | 2000-06-30 | Toyota Motor Corp | Electrode for fuel cell and its manufacture |
FR2788168A1 (en) * | 1998-12-30 | 2000-07-07 | Messier Bugatti | GAS DIFFUSION ELECTRODE SUPPORTING AN ELECTROCHEMICAL REACTION CATALYST |
EP1063717B1 (en) * | 1999-06-22 | 2011-09-28 | Sanyo Electric Co., Ltd. | Stable and high-performance fuel cell |
DE20022262U1 (en) * | 1999-07-07 | 2001-08-09 | Sgl Carbon Ag | Electrode substrate for electrochemical cells |
US6280870B1 (en) * | 1999-08-26 | 2001-08-28 | Plug Power Inc. | Combined fuel cell flow plate and gas diffusion layer |
US6303245B1 (en) * | 1999-08-27 | 2001-10-16 | Plug Power Inc. | Fuel cell channeled distribution of hydration water |
US6413664B1 (en) * | 1999-12-23 | 2002-07-02 | Ballard Power Systems Inc. | Fuel cell separator plate with discrete fluid distribution features |
EP1150369B1 (en) * | 2000-04-28 | 2003-07-02 | OMG AG & Co. KG | Gas distributor structure and gas diffusion electrodes for polymer electrolyte fuel cells |
EP1150370A2 (en) * | 2000-04-28 | 2001-10-31 | dmc2 Degussa Metals Catalysts Cerdec AG | Gas distribution structures and gas diffusion electrodes for polymer electrolyte fuel cells |
JP4923319B2 (en) * | 2000-07-25 | 2012-04-25 | トヨタ自動車株式会社 | Fuel cell |
DE10042744A1 (en) * | 2000-08-31 | 2002-03-28 | Omg Ag & Co Kg | PEM fuel cell stack |
DE60234245D1 (en) * | 2001-03-07 | 2009-12-17 | Panasonic Corp | POLYMER ELECTROLYT-TYPE FUEL CELL AND METHOD OF PREPARING THEREOF |
JP2002289200A (en) * | 2001-03-23 | 2002-10-04 | Matsushita Electric Ind Co Ltd | Fuel battery |
KR100397611B1 (en) * | 2001-03-31 | 2003-09-17 | 삼성전자주식회사 | Proton exchange fuel cell stack |
US6733915B2 (en) * | 2001-12-27 | 2004-05-11 | E. I. Du Pont De Nemours And Company | Gas diffusion backing for fuel cells |
US6939636B2 (en) * | 2003-04-28 | 2005-09-06 | Relion, Inc. | Air cooled fuel cell module |
-
2003
- 2003-07-28 US US10/628,318 patent/US7332240B2/en active Active
-
2004
- 2004-06-07 DE DE112004001393T patent/DE112004001393B4/en active Active
- 2004-06-07 CN CN200480022187A patent/CN100585926C/en active Active
- 2004-06-07 JP JP2006521821A patent/JP4695079B2/en not_active Expired - Fee Related
- 2004-06-07 WO PCT/US2004/017841 patent/WO2005018015A2/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6024848A (en) * | 1998-04-15 | 2000-02-15 | International Fuel Cells, Corporation | Electrochemical cell with a porous support plate |
US6350539B1 (en) * | 1999-10-25 | 2002-02-26 | General Motors Corporation | Composite gas distribution structure for fuel cell |
WO2004066427A1 (en) * | 2003-01-15 | 2004-08-05 | General Motors Corporation | Diffusion layer and fuel cells |
Also Published As
Publication number | Publication date |
---|---|
JP4695079B2 (en) | 2011-06-08 |
US20050026018A1 (en) | 2005-02-03 |
DE112004001393B4 (en) | 2013-08-22 |
US7332240B2 (en) | 2008-02-19 |
DE112004001393T5 (en) | 2006-06-29 |
CN100585926C (en) | 2010-01-27 |
JP2007500423A (en) | 2007-01-11 |
WO2005018015A3 (en) | 2005-05-06 |
CN1830111A (en) | 2006-09-06 |
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