Membrane Electrode Assembly (mea) Patents (Class 429/483)
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Patent number: 8227136Abstract: A unitized electrode assembly for a fuel cell comprising an electrolyte membrane, a subgasket, and a sealing bead disposed therebetween is disclosed. The sealing bead adapted to fill a tenting region formed between the membrane and the subgasket to maximize an operating life of the electrolyte membrane by militating against wear of membrane expansion during use of the fuel cell.Type: GrantFiled: October 30, 2008Date of Patent: July 24, 2012Assignee: GM Global Technology Operations LLCInventors: Scott L. Peters, Craig S. Gittleman
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Patent number: 8227135Abstract: Improved polymer-based materials are described, for example for use as an electrode binder in a fuel cell. A fuel cell according to an example of the present invention comprises a first electrode including a catalyst and an electrode binder, a second electrode, and an electrolyte located between the first electrode and the second electrode. The electrolyte may be a proton-exchange membrane (PEM). The electrode binder includes one or more polymers, such as a polyphosphazene.Type: GrantFiled: March 28, 2006Date of Patent: July 24, 2012Assignees: Toyota Motor Corporation, Toyota Motor Engineering & Manufacturing North America, Inc., Case Western Reserve UniversityInventors: Wen Li, John Muldoon, Hiroshi Hamaguchi, Akira Tsujiko, Toshiya Saito, Ryszard J. Wycisk, Jun Lin, Peter N. Pintauro
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Patent number: 8227134Abstract: Disclosed are self-hydrating membrane electrode assemblies (MEAs), including MEAs that have been magnetically modified, which comprises (i) a cathode comprising an electrically conducting material having a catalytic material on at least a portion of a first surface thereof, the catalytic material comprising an effective amount of at least one catalyst component and at least one ion conducting material; (ii) a separator adjacent to and in substantial contact with the first surface of the cathode and comprising an ion conducting material; and (iii) an anode adjacent to and in substantial contact with the surface of the separator opposite the cathode and comprising an electrically conducting material having a catalytic material on at least a portion of a surface thereof adjacent to the separator, the catalytic material comprising an effective amount of at least one catalyst component and at least one ion conducting material; wherein the separator permits water to pass from the first surface of the cathode to theType: GrantFiled: October 15, 2003Date of Patent: July 24, 2012Assignee: University of Iowa Research FoundationInventors: Johna Leddy, Wayne L. Gellett, Drew C. Dunwoody
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Patent number: 8227147Abstract: A method of preparing advanced membrane electrode assemblies (MEA) for use in fuel cells. A base polymer is selected for a base membrane. An electrode composition is selected to optimize properties exhibited by the membrane electrode assembly based on the selection of the base polymer. A property-tuning coating layer composition is selected based on compatibility with the base polymer and the electrode composition. A solvent is selected based on the interaction of the solvent with the base polymer and the property-tuning coating layer composition. The MEA is assembled by preparing the base membrane and then applying the property-tuning coating layer to form a composite membrane. Finally, a catalyst is applied to the composite membrane.Type: GrantFiled: April 22, 2005Date of Patent: July 24, 2012Assignee: Los Alamos National Security, LLCInventors: Yu Seung Kim, Bryan S. Pivovar
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Patent number: 8227124Abstract: A fuel cell including a membrane electrode assembly composed of a ionically conductive member sandwiched between a pair of electrodes. At least one of the electrodes including a catalyst loading characterized by catalytic activity that varies in proportion to the catalyst loading. Moreover, the fuel cell includes a flow path for supplying gaseous reactants to the electrodes and the catalyst loading is varied according to the flow path geometry.Type: GrantFiled: February 18, 2011Date of Patent: July 24, 2012Assignee: GM Global Technology Operations LLCInventors: Robert L. Fuss, Bhaskar Sompalli
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Patent number: 8221931Abstract: A fuel gas inlet, a fuel gas outlet, an oxygen-containing gas inlet, an oxygen-containing gas outlet, and other components, which are disposed at upper and lower portions at both ends in the lateral direction, are provided in a first fuel cell stack. A plurality of cooling medium inlets, a plurality of cooling medium outlets, and other components are provided at lower portions on the long side and at upper portions on the long side respectively. A cooling medium flows from the lower portions to the upper portions through cooling medium flow passages to cool the power generation surface smoothly and reliably.Type: GrantFiled: October 2, 2007Date of Patent: July 17, 2012Assignee: Honda Motor Co., Ltd.Inventors: Narutoshi Sugita, Noriaki Osao, Takeshi Ushio
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Patent number: 8222571Abstract: An apparatus for curing an electrolyte membrane of a fuel cell is disclosed, by which curing can be performed by preventing a surface of an electrolyte layer from swelling. The present invention includes an oven body, a vacuum sucking plate entering the oven body while the electrolyte membrane having an electro-catalyst liquid sprayed thereon is attached to an upper surface of the vacuum sucking plate, a magazine provided within the oven body to sequentially load a plurality of vacuum sucking plates to enter the oven body in a horizontal state, and an air-sucking terminal provided to a rear side of the magazine to sustain a vacuum state of the vacuum sucking plate by being connected to the vacuum sucking plate loaded in the magazine.Type: GrantFiled: September 29, 2006Date of Patent: July 17, 2012Assignees: Nordson Sangsan Ltd.Inventor: Byung Kook Yoon
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Patent number: 8216740Abstract: A fuel cell including an MEA sealed by a multi-block copolymer gasket is disclosed. The self-assembling, nanophase-separated polymer exhibits higher corrosion resistance relative to typical silicone gaskets while providing a better seal of the MEA to the fuel cell housing than PTFE.Type: GrantFiled: December 12, 2006Date of Patent: July 10, 2012Assignee: Bose CorporationInventors: Shawn J. Prevoir, Agota F. Fehervari
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Patent number: 8211592Abstract: A fluid distribution element is provided for a fuel cell having a major surface facing a membrane electrode assembly (MEA) and one or more flow channels for transporting gas and liquid to and from the MEA. One or more regions of the major surface are overlaid with a super-hydrophilic corrosion-resistant layer comprising a fluoropolymer. Methods of making such a fluid distribution element are also provided.Type: GrantFiled: September 15, 2005Date of Patent: July 3, 2012Assignee: GM Global Technology Operations LLCInventors: Gayatri Vyas, Youssef M. Mikhail, Thomas A. Trabold
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Patent number: 8206870Abstract: A membrane electrode assembly comprising two electrode separated by a polymer electrolyte membrane wherein the surfaces of the membrane are in contact with the electrodes so that the first electrode partially or totally covers the front of the membrane and the second electrode partially or totally covers the back of the membrane; two gasket layers wherein the first gasket layer partially covers the front of the membrane and/or the first electrode and the second gasket layer partially covers the back of the membrane and/or the second electrode the assembly also comprises a second gasket material on the front of the first gasket layer and on the back of the second gasket layer; each of the gasket layers comprises at least one recess; the second gasket material on the front of the first gasket layer is in contact with the second gasket material on the back of the second gasket layer.Type: GrantFiled: August 5, 2005Date of Patent: June 26, 2012Assignee: BASF Fuel Cell GmbHInventors: Glen Hoppes, Raymond Puffer
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Patent number: 8206871Abstract: A fuel cell assembly is disclosed, the fuel cell assembly including a pair of terminal plates, one terminal plate disposed at each end of the fuel cell assembly, a fuel cell disposed between a pair of end fuel cells and the terminal plates, and a thermally insulating, electrically conductive layer formed between the fuel cell and one of the terminal plates adapted to mitigate thermal losses from the end plate, and fluid condensation and ice formation in an end fuel cell. The end fuel cells of the fuel cell assembly have a membrane and/or a cathode having a thickness greater than an average thickness of a membrane and/or a cathode disposed in the fuel cell that may be used in conjunction with, or instead of, the insulating layer to further mitigate thermal losses from the end plate, and fluid condensation and ice formation in the end fuel cells.Type: GrantFiled: July 10, 2009Date of Patent: June 26, 2012Assignee: GM Global Technology Operations LLCInventors: Eric J. Connor, Daniel P. Miller, Wenbin Gu, Jeanette E. Owejan, Mark Mathias
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Patent number: 8206872Abstract: An MEA for a fuel cell that employs multiple catalyst layers to reduce the hydrogen and/or oxygen partial pressure at the membrane so as to reduce the fluoride release rate from the membrane and reduce membrane degradation. An anode side multi-layer catalyst configuration is positioned at the anode side of the MEA membrane. The anode side multi-layer catalyst configuration includes an anode side under layer positioned against the membrane and including a catalyst, an anode side middle layer positioned against the anode side under layer and not including a catalyst and an anode side catalyst layer positioned against the anode side middle layer and opposite to the anode side under layer and including a catalyst, where the amount of catalyst in the anode side catalyst layer is greater than the amount of catalyst in the anode side under layer.Type: GrantFiled: July 26, 2007Date of Patent: June 26, 2012Assignee: GM Global Technology Operations LLCInventors: Annette M. Brenner, Hubert A. Gasteiger, Wenbin Gu, James Leistra, Brian A. Litteer, Han Liu, Susan G. Yan, Jingxin Zhang
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Patent number: 8202668Abstract: A fuel cell device includes a housing containing a fuel processor that generates fuel gas and a fuel cell having electrodes forming an anode and cathode, and an ion exchange electrolyte positioned between the electrodes. The housing can be formed as first and second cylindrically configured outer shell sections that form a battery cell that is configured similar to a commercially available battery cell. A thermal-capillary pump can be operative with the electrodes and an ion exchange electrolyte, and operatively connected to the fuel processor. The electrodes are configured such that heat generated between the electrodes forces water to any cooler edges of the electrodes and is pumped by capillary action back to the fuel processor to supply water for producing hydrogen gas. The electrodes can be formed on a silicon substrate that includes a flow divider with at least one fuel gas input channel that can be controlled by a MEMS valve.Type: GrantFiled: March 31, 2009Date of Patent: June 19, 2012Assignee: STMicroelectronics, Inc.Inventor: Anthony M. Chiu
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Patent number: 8202667Abstract: A fuel cell device includes a housing containing a fuel processor that generates fuel gas and a fuel cell having electrodes forming an anode and cathode, and an ion exchange electrolyte positioned between the electrodes. The housing can be formed as first and second cylindrically configured outer shell sections that form a battery cell that is configured similar to a commercially available battery cell. A thermal-capillary pump can be operative with the electrodes and an ion exchange electrolyte, and operatively connected to the fuel processor. The electrodes are configured such that heat generated between the electrodes forces water to any cooler edges of the electrodes and is pumped by capillary action back to the fuel processor to supply water for producing hydrogen gas. The electrodes can be formed on a silicon substrate that includes a flow divider with at least one fuel gas input channel that can be controlled by a MEMS valve.Type: GrantFiled: March 31, 2009Date of Patent: June 19, 2012Inventor: Anthony M. Chiu
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Patent number: 8202662Abstract: This invention provides a membrane electrode assembly having sufficient water retention ability and a high level of battery performance even under a low humidification condition. This invention discloses a manufacturing method of a membrane electrode assembly which has catalytic layers on both surfaces of a polymer electrolyte membrane. This manufacturing method includes following processes: A coating process that a catalyst ink which contains catalyst loading particles, a polymer electrolyte and a solvent is coated on a single surface of each of two base substrates. An arranging process in which a polymer electrolyte membrane is arranged between the two base substrates in a way that each of the base substrate's surfaces on which the catalyst ink is coated faces the polymer electrolyte membrane. A transferring process in which the catalyst ink coated on the two base substrates is transferred to both surfaces of the polymer electrolyte membrane to form the catalytic layers.Type: GrantFiled: March 13, 2009Date of Patent: June 19, 2012Assignee: Toppan Printing Co., Ltd.Inventor: Shinichiro Yamagata
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Patent number: 8202664Abstract: A membrane electrode assembly (MEA) is structured such that an anode is joined, via a carbon layer, to one surface of a solid polymer electrolyte membrane containing PBI and phosphoric acid and a cathode is joined to the other surface. The carbon layer is constituted by carbon powder and a first binder. Carbon black, carbon nanotube and the like may be used as carbon powder. The thickness of the carbon layer is preferably greater than that of the solid polymer electrolyte membrane.Type: GrantFiled: July 18, 2005Date of Patent: June 19, 2012Assignees: Sanyo Electric Co., Ltd., Samsung SDI Co., Ltd., Samsung Electronics Co., Ltd.Inventors: Kunihiro Nakato, Atsuo Sonai
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Patent number: 8202665Abstract: An aspect of the present invention provides a fuel cell apparatus that includes at least one fuel cell stack including a plurality of unit fuel cells, each unit fuel cell including a membrane electrode assembly including an electrolyte membrane and electrodes arranged on each side the electrode membrane, and a pair of separators sandwiching the membrane electrode assembly, a casing arranged and configured to accommodate the fuel cell stack, and at least one elastic member arranged part or whole of the circumference of the fuel cell stack in contact with an inner wall of the casing.Type: GrantFiled: July 27, 2005Date of Patent: June 19, 2012Assignee: Nissan Motor Co., Ltd.Inventors: Keita Iritsuki, Yasuhiro Numao
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Publication number: 20120148937Abstract: A fuel cell membrane electrode assembly is provided comprising a polymer electrolyte membrane comprising a first polymer electrolyte and at least one manganese compound; and one or more electrode layers comprising a catalyst and at least one cerium compound. The membrane electrode assembly demonstrates an unexpected combination of durability and performance.Type: ApplicationFiled: February 14, 2012Publication date: June 14, 2012Inventors: Daniel M. Pierpont, Steven J. Hamrock, Matthew H. Frey
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Publication number: 20120148936Abstract: Catalyst ink comprising one or more catalyst materials, a solvent component and at least one acid, an electrode comprising at least one catalyst ink according to the present invention, a membrane-electrode assembly comprising at least one electrode according to the invention or comprising at least one catalyst ink according to the present invention, a fuel cell comprising at least one membrane-electrode assembly according to the invention and also a process for producing a membrane-electrode assembly according to the present invention.Type: ApplicationFiled: August 18, 2010Publication date: June 14, 2012Applicant: BASF SEInventors: Oemer Uensal, Sigmar Braeuninger
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Patent number: 8197632Abstract: According to the present invention, an electrolyte membrane having recesses and projections on the surface thereof is obtained. In addition, a membrane-electrode assembly comprising the electrolyte membrane, in which the effective contact area between the electrolyte membrane surface and an electrode catalyst layer is increased, is obtained. An electrolyte membrane 1 which comprises a fluorine-based electrolyte is heated and pressed with the use of plates 10a and 10b each having recesses and projections 11 on the surface thereof such that recesses and projections 2a and 2b are formed on the surface of the electrolyte membrane 1. Thereafter, the electrolyte membrane 1 is subjected to a treatment for imparting ion exchange properties to an electrolyte polymer, such as hydrolysis, such that an electrolyte membrane 3 having recesses and projections on the surface thereof is obtained.Type: GrantFiled: June 18, 2007Date of Patent: June 12, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventor: Hiroshi Suzuki
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Patent number: 8192891Abstract: A monopolar membrane electrode assembly (MEA) for a fuel cell, for example, includes: an electrolyte membrane; anode and cathode electrodes formed on opposite surfaces of the electrolyte membrane, respectively; current collecting bodies that form electrical paths of electricity generated from an electricity generation reaction between the anode and cathode electrodes and the electrolyte membrane; and sensing elements to measure changes in operation state conditions during electricity generation and electrical connection. Since temperature and fuel concentration in the monopolar MEA having the above structure are detected on a real time basis, appropriate action can be taken whenever an abnormal operation thereof is detected.Type: GrantFiled: October 9, 2007Date of Patent: June 5, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Sang-kyun Kang, Jae-yong Lee, Chan-ho Pak
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Patent number: 8187764Abstract: A fuel cell includes a cathode, an anode, an electrolyte membrane interposed between the cathode and the anode, and a porous layer containing a moisture retentive material. The anode includes an anode catalyst layer adjacent to the electrolyte membrane and an anode diffusion layer adjacent to the anode catalyst layer, and the porous layer is disposed between the anode catalyst layer and the electrolyte membrane. The performance of the fuel cell can be stably maintained even when a fuel supply is temporarily interrupted due to a malfunction of a pump or clogging of a fuel channel.Type: GrantFiled: February 6, 2006Date of Patent: May 29, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Ji-rae Kim, Hae-kyoung Kim, Seung-jae Lee, Hyuk Chang
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Patent number: 8187765Abstract: A membrane electrode assembly according to the invention includes a solid polymer electrolyte membrane and an electrode joined to each of two sides of the solid polymer electrolyte membrane. The solid polymer electrolyte membrane is such that some or all of the protons included in the entire solid polymer electrolyte membrane, a band region, or a non-power generating region are ion exchanged with one or more cations selected from among complex cations, class four alkylammonium cations, and high valence cations. In addition or alternatively, the solid polymer electrolyte membrane includes an organo-metalloxane polymer obtained by impregnating the entire solid polymer electrolyte membrane, the non-power generating region, or the band region with an organo-metalloxane monomer that includes an ammonium cation or a class four ammonium cation at its terminus and then hydrolyzing and polycondensing the organo-metalloxane monomer.Type: GrantFiled: January 19, 2007Date of Patent: May 29, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kensaku Kodama, Fusayoshi Miura, Yu Morimoto, Manabu Kato, Kazutaka Kimura, Hiroo Yoshikawa, Toshiyuki Suzuki, Tsutomu Ochi
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Patent number: 8187767Abstract: A polymer electrolyte membrane or gas diffusion electrode includes an ion-conducting polymeric material which includes moieties of formula (A) which are substituted on average with more than 1 and 3 or fewer groups (e.g. sulphonate groups) which provide ion-exchange sites and hydrogen atoms of said moieties are optionally substituted, wherein each X in said moieties of formula A independently represent an oxygen or sulphur atom. The ion conducting polymeric material is suitably prepared by controllably sulphonating a polymeric material using about 100% sulphuric acid at 34° C. to 36° C.Type: GrantFiled: April 1, 2004Date of Patent: May 29, 2012Assignee: Victrex Manufacturing LimitedInventors: Peter Charnock, John N. Devine, Brian Wilson
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Patent number: 8182950Abstract: A metal oxide electrode catalyst which includes a metal oxide (Y) obtained by heat treating a metal compound (X) under an oxygen-containing atmosphere. The valence of the metal in the metal compound (X) is smaller than the valence of the metal in the metal oxide (Y). Further, the metal oxide electrocatalyst has an ionization potential in the range of 4.9 to 5.5 eV.Type: GrantFiled: July 23, 2008Date of Patent: May 22, 2012Assignee: Showa Denko K.K.Inventors: Tadatoshi Kurozumi, Toshikazu Shishikura, Hiroshi Konuma
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Patent number: 8182951Abstract: To provide a fuel cell system provided with a polymer electrolyte fuel cell which is excellent in the power generation characteristics under high temperature and low or no humidity conditions. A fuel cell system 20 comprising a polymer electrolyte fuel cell 22 having a membrane/electrode assembly 10 having a catalyst layer containing a polymer (H) which has repeating units based on a perfluoromonomer having an alicyclic structure and has ion exchange groups, a temperature controlling means for controlling temperature of the polymer electrolyte fuel cell 22, a temperature sensor 38 for detecting temperature of the polymer electrolyte fuel cell 22, and a controlling device 40 for controlling the temperature controlling means based on temperature information from the temperature sensor 38 so that the maximum temperature of the polymer electrolyte fuel cell 22 becomes within the range of from 90 to 140° C.Type: GrantFiled: July 1, 2010Date of Patent: May 22, 2012Assignee: Asahi Glass Company, LimitedInventors: Satoru Hommura, Susumu Saito, Tetsuji Shimohira, Atsushi Watakabe, Junichi Tayanagi
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Patent number: 8182659Abstract: Electrochemical cell comprises, in one embodiment, a proton exchange membrane (PEM), an anode positioned along one face of the PEM, and a cathode positioned along the other face of the PEM. An electrically-conductive, compressible, spring-like, porous pad for defining a fluid cavity is placed in contact with the outer face of the cathode or the outer face of the anode. The porous pad comprises a particulate or mat of one or more doped- or reduced-valve metal oxides, which are bound together with one or more thermoplastic resins.Type: GrantFiled: April 26, 2010Date of Patent: May 22, 2012Assignee: Giner Electrochemical Systems, LLCInventors: Anthony B. LaConti, Larry L. Swette
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Patent number: 8178250Abstract: A fuel cell device includes a housing containing a fuel processor that generates fuel gas and a fuel cell having electrodes forming an anode and cathode, and an ion exchange electrolyte positioned between the electrodes. The housing can be formed as first and second cylindrically configured outer shell sections that form a battery cell that is configured similar to a commercially available battery cell. A thermal-capillary pump can be operative with the electrodes and an ion exchange electrolyte, and operatively connected to the fuel processor. The electrodes are configured such that heat generated between the electrodes forces water to any cooler edges of the electrodes and is pumped by capillary action back to the fuel processor to supply water for producing hydrogen gas. The electrodes can be formed on a silicon substrate that includes a flow divider with at least one fuel gas input channel that can be controlled by a MEMS valve.Type: GrantFiled: March 31, 2009Date of Patent: May 15, 2012Assignee: STMicroelectronics, Inc.Inventor: Anthony M. Chiu
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Patent number: 8178259Abstract: A gas diffusion media is described. The gas diffusion media comprises a conductive porous substrate; and a microporous layer; wherein a cathode effective transport length is in a range of about 700 to about 1900 ?m; wherein an overall thermal resistance is in a range of about 1.8 to about 3.8 cm2-K/W; and wherein a ratio of the cathode effective transport length to an anode effective transport length is greater than about 2.Type: GrantFiled: February 9, 2010Date of Patent: May 15, 2012Assignee: GM Global Technology Operations LLCInventors: Po-Ya Abel Chuang, Wenbin Gu
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Publication number: 20120115064Abstract: It is an object of the present invention to provide a production process which can produce a fuel cell catalyst having excellent durability and high oxygen reducing activity. The process for producing a fuel cell catalyst including a metal-containing oxycarbonitride of the present invention includes a grinding step for grinding the oxycarbonitride using a ball mill, wherein the metal-containing oxycarbonitride is represented by a specific compositional formula; balls in the ball mill have a diameter of 0.1 to 1.0 mm; the grinding time using the ball mill is 1 to 45 minutes; the rotating centrifugal acceleration in grinding using the ball mill is 2 to 20 G; the grinding using the ball mill is carried out in such a state that the metal-containing oxycarbonitride is mixed with a solvent containing no oxygen atom in the molecule; and when the ball mill is a planetary ball mill, the orbital centrifugal acceleration mill is 5 to 50 G.Type: ApplicationFiled: July 14, 2010Publication date: May 10, 2012Applicant: SHOWA DENKO K.K.Inventors: Yasuaki Wakizaka, Ryuji Monden, Toshikazu Shishikura, Takuya Imai, Kenichiro Ota
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Publication number: 20120115065Abstract: Provided are an ion-conductive composite electrolyte that improves ionic conductivity, a membrane-electrode assembly and an electrochemical device using the same, and a method for producing an ion-conductive composite electrolyte membrane. A proton-conductive composite electrolyte contains an electrolyte having a proton-dissociative group (—SO3H) and a compound having a Lewis acid group MXn-1, wherein the Lewis acid group and the proton-dissociative group interact with each other. The compound having the Lewis acid group is a Lewis acid compound MXn or a polymer having a Lewis acid group MXn-1. The electrolyte having a proton-dissociative group is, for example, a fullerene derivative. A proton-conductive composite electrolyte membrane is formed using a solvent having a donor number of 25 or less, and a membrane-electrode assembly using the same is suitable for use in a fuel cell.Type: ApplicationFiled: July 16, 2010Publication date: May 10, 2012Applicant: SONY CORPORATIONInventors: Takuro Hirakimoto, Kazuaki Fukushima, Kenji Kishimoto
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Patent number: 8173324Abstract: A platinum alloy catalyst PtX, wherein the atomic percent of platinum in the bulk alloy is from 5 to 50 at %, the remaining being X, characterised in that the atomic percent of platinum at the surface of the alloy is from 10 to 80 at %, the remainder being X, provided that the at % of platinum at the surface of the alloy is at least 25% greater than the at % of platinum in the bulk alloy is disclosed.Type: GrantFiled: July 22, 2008Date of Patent: May 8, 2012Assignee: Johnson Matthey Public Limited CompanyInventors: Janet Mary Fisher, David Thompsett
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Patent number: 8173321Abstract: The invention relates to a fuel cell having a membrane electrode arrangement (16) arranged between two separator plate units (44), a first fluid area (12) for distribution of a first fluid which is adjacent to one side of the membrane-electrode arrangement (16), a second fluid area (14) for distribution of a second fluid which is adjacent to a side of the membrane-electrode arrangement (16) opposite this side, with a separating wall (36) being arranged in at least one fluid area (12) and subdividing the fluid area (12) into at least one metering area (32) and one fluid subarea (34), with the at least one metering area (32) having a fluid connection to the adjacent fluid subarea (34) at at least one metering point (38), such that the first fluid can be metered from the metering area (32) through the metering point (38) into the adjacent fluid subarea (34).Type: GrantFiled: May 4, 2007Date of Patent: May 8, 2012Assignee: Daimler AGInventor: Felix Blank
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Patent number: 8168348Abstract: The present invention relates to a process for the preparation of electrochemical catalysts of the polymer electrolytes-based fuel cells. With the process of the present invention, high catalyst activity while uniformly supporting a large amount of metal particles on a surface of a support can be achieved. Also, the present invention provides a process for the preparation of electrochemical catalysts of the polymer electrolytes-based fuel cells capable of using a small amount of toxic solvent without an additional high-temperature hydrogen annealing.Type: GrantFiled: December 4, 2007Date of Patent: May 1, 2012Assignee: Hanwha Chemical CorporationInventors: Byungchul Jang, Youngsu Jiong, Youngtaek Kim
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Publication number: 20120100455Abstract: A catalyst material comprising an electrically conducting support material, a proton-conducting, acid-doped polymer based on a polyazole salt, and a catalytically active material. A process for preparing the catalyst material. A catalyst material prepared by the process of the invention. A catalyst ink comprising the catalyst material of the invention and a solvent. A catalyst-coated membrane (CCM) comprising a polymer electrolyte membrane and also catalytically active layers comprising a catalyst material of the present invention. A gas diffusion electrode (GDE) comprising a gas diffusion layer and a catalytically active layer comprising a catalyst material of the invention. A membrane-electrode assembly (MEA) comprising a polymer electrolyte membrane, catalytically active layers comprising a catalyst material of the invention, and gas diffusion layers. And a fuel cell comprising a membrane-electrode assembly of the present invention.Type: ApplicationFiled: October 21, 2011Publication date: April 26, 2012Applicant: BASF SEInventors: Oemer UENSAL, Sigmar Bräuninger, Claudia Querner, Ekkehard Schwab
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Publication number: 20120100454Abstract: A subassembly for a fuel cell includes a fuel cell plate having a first side and a second side. Each of the first side and the second side has a flow field disposed between a pair of headers. An insulating spacer abuts the first side of the fuel cell plate and is disposed adjacent a perimeter of the fuel cell plate. A unitized electrode assembly includes a subgasket, a membrane electrode assembly, and a pair of diffusion medium layers. The membrane electrode assembly has an electrolyte membrane sandwiched between a pair of electrodes. The membrane electrode assembly is sandwiched between the pair of diffusion medium layers. The subgasket surrounds, and is coupled to, the membrane electrode assembly. The subgasket abuts the insulating spacer. An elastomeric seal abuts the second side of the fuel cell plate.Type: ApplicationFiled: October 21, 2010Publication date: April 26, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Matthew J. Beutel, Ronald L. James, Daniel P. Miller, Steven J. Spencer
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Patent number: 8163406Abstract: A membrane-electrode assembly for solid polymer electrolyte fuel cell that exhibits superior dimensional stability to high temperature of hot water generated on power generation, and that has both excellent power generation performance and durability in a low temperature environment is provided. According to the membrane-electrode assembly for solid polymer electrolyte fuel cell in which a polyarylene-based copolymer having a specific repeating constitutional unit is used as a proton conductive membrane, the membrane-electrode assembly for solid polymer electrolyte fuel cell that exhibits superior dimensional stability to high temperature of hot water generated on power generation, and that has both excellent power generation performance and durability in a low temperature environment can be provided.Type: GrantFiled: December 26, 2007Date of Patent: April 24, 2012Assignee: Honda Motor Co., Ltd.Inventors: Nagayuki Kanaoka, Hiroshi Sohma, Ryohei Ishimaru
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Publication number: 20120094210Abstract: Catalyst ink comprising one or more catalyst materials, a liquid medium and polymer particles comprising one or more proton-conducting polymers, an electrode comprising at least one catalyst ink according to the present invention, a membrane-electrode assembly comprising at least one electrode according to the invention or comprising at least one catalyst ink according to the present invention, a fuel cell comprising at least one membrane-electrode assembly according to the invention and also a process for producing a membrane-electrode assembly according to the present invention.Type: ApplicationFiled: July 6, 2010Publication date: April 19, 2012Applicant: BASF SEInventors: Oemer Uensal, Sigmar Braeuninger
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Publication number: 20120088181Abstract: A fuel cell includes an ion conducting membrane having a first side and a second side. Characteristically, the ion conducting membrane has a sufficient amount of a stabilization agent and platinum to inhibit the loss of fluoride from the ion conducting membrane when compared to an ion conducting membrane having the same construction except for the presence of cerium ions.Type: ApplicationFiled: October 7, 2010Publication date: April 12, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Frank Coms, Craig Gittleman, Annette Brenner, Ruichun Jiang
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Patent number: 8148027Abstract: The present invention refers to a self-humidifying electrically conducting composite material for the manufacture of a fuel cell.Type: GrantFiled: September 7, 2007Date of Patent: April 3, 2012Assignees: Nanyang Technological University, Gashub Technology Pte LtdInventors: Ming Han, Siew Hwa Chan
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Patent number: 8148026Abstract: Disclosed are a multi-layered electrode for fuel cell and a method for producing the same, wherein the electrode can be operated under non-humidification and normal temperature, the flooding of the electrode catalyst layer can be prevented, and the long-term operation characteristic can be increased due to the prevention of the loss of the electrode catalyst layer.Type: GrantFiled: October 31, 2005Date of Patent: April 3, 2012Assignee: Korea Institute of Science and TechnologyInventors: In Hwan Oh, Eun Ae Cho, Hyoung-juhn Kim, Heung Yong Ha, Seong Ahn Hong, Tae Hoon Lim, Suk-Woo Nam, Sung Pil Yoon, Jonghee Han, Jaeyoung Lee, Hyung Chul Hahm
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Publication number: 20120070765Abstract: A method of preparing an electrolyte membrane comprising a crosslinked object of a polybenzoxazine-based compound formed of a polymerized resultant product of a first monofunctional benzoxazine-based monomer or a second benzoxazine-based monomer multifunctional benzoxazine-based monomer with a crosslinkable compound.Type: ApplicationFiled: September 23, 2011Publication date: March 22, 2012Applicant: SAMSUNG SDI CO., LTD.Inventors: Seong-woo CHOI, Hee-young Sun, Myung-jin Lee, Woo-sung Jeon
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Patent number: 8137865Abstract: A plate member for a fuel cell is provided. The plate member for the fuel cell may be laminated together with a membrane-electrode assembly to constitute a fuel cell having cells and may be provided with a channel forming portion which forms a fluid channel to supply and discharge a fluid to/from the membrane-electrode assembly and/or the cells. The plate member for the fuel cell includes a first covering portion which covers the channel forming portion, and a second covering portion which covers an edge of the first covering portion together with a portion around the edge of the first covering portion.Type: GrantFiled: August 30, 2007Date of Patent: March 20, 2012Assignee: Toyota Jidosha Kabshiki KaishaInventor: Kazutaka Iizuka
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Patent number: 8137858Abstract: A membrane electrode assembly (MEA) of the invention comprises an anode and a cathode and a proton conductive membrane therebetween, the anode and the cathode each comprising a patterned sheet of longitudinally aligned transition metal-containing carbon nanotubes, wherein the carbon nanotubes are in contact with and are aligned generally perpendicular to the membrane, wherein a catalytically active transition metal is incorporated throughout the nanotubes.Type: GrantFiled: May 27, 2010Date of Patent: March 20, 2012Assignee: UChicago Argonne, LLCInventors: Di-Jia Liu, Junbing Yang
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Patent number: 8137859Abstract: A membrane-electrode assembly for a fuel cell including an anode and a cathode disposed to face each other and a polymer electrolyte membrane disposed therebetween. The anode and the cathode include a conductive electrode substrate and a catalyst layer formed thereon. The catalyst layer includes ion conductive polymer particles and a catalytic metal. The resulting membrane-electrode assembly has an increased driving voltage.Type: GrantFiled: April 27, 2007Date of Patent: March 20, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Chan-Gyun Shin, Sang-Il Han, In-Hyuk Son
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Patent number: 8137857Abstract: A fuel cell (8a) having a matrix (11) for containing phosphoric acid (or other liquid) electrolyte with an anode catalyst (12) on one side and a cathode catalyst (13) on the other side includes an anode substrate (16a) in contact with the anode catalyst and a cathode substrate (17a) in contact with the cathode catalyst, the anode substrate being thicker than the cathode substrate by a ratio of between 1.75 to 1.0 and 3.0 to 1.0. Non-porous, hydrophobic separator plate assemblies (19) provide fuel flow channels (20) and oxidant flow channels (21) as well as demarcating the fuel cells.Type: GrantFiled: October 27, 2006Date of Patent: March 20, 2012Assignee: UTC Power CorporationInventor: Richard D. Breault
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Publication number: 20120064431Abstract: Polymer electrolyte-catalyst particles that are effective in preventing agglomeration of catalyst particles and polymer electrolyte particles, effective in the formation of ion pathways by polymer electrolyte particles and electron pathways by catalyst particles, and that are able to realize strong catalytic performance by improving the use efficiency of the catalyst particles and a manufacturing method thereof, electrodes formed using such composite structure particles, a membrane electrode assembly (MEA), and an electrochemical device are provided. First, the dispersion liquid in which an ion conducting polymer electrolyte material is dispersed and microparticles 1 are mixed, and the surfaces of the microparticles 1 are coated by an ion conducting polymer electrolyte layer 2 that does not contain a catalyst material.Type: ApplicationFiled: June 4, 2010Publication date: March 15, 2012Applicant: SONY CORPORATIONInventors: Atsushi Sato, Kenji Kishimoto, Azumi Nakamura
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Publication number: 20120064435Abstract: To provide a technique capable of improving the deterioration of a fuel cell due to a non-stationary operation (start/stop, fuel shortage) and ensuing a low cost. An anode-side catalyst composition for fuel cells, comprising a catalyst obtained by supporting a catalyst particle on an electrically conductive material and an ion exchange resin, wherein the catalyst particle is composed of a metal, a metal oxide, a partial metal oxide or a mixture thereof each being lower in both the oxygen reduction ability and the water electrolysis overvoltage than platinum and having a hydrogen oxidation ability.Type: ApplicationFiled: April 22, 2010Publication date: March 15, 2012Inventors: Masashi Maruyama, Atsushi Sakamoto, Takuya Kosaka, Tomoyuki Kawaguchi
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Publication number: 20120064434Abstract: A substantially crack-free electrode layer is described. The substantially crack-free electrode layer includes a substrate; and a substantially crack-free electrode layer on the substrate, the electrode layer comprising a catalyst, an ionomer, and a layered silicate reinforcement. Methods of making the electrode layer, electrode ink compositions, and membrane electrode assemblies incorporating the electrode layer are also described.Type: ApplicationFiled: September 15, 2010Publication date: March 15, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Bradley M. Houghtaling, Jeanette E. Owejan
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Patent number: 8133637Abstract: The fuel cells include electrode membrane assemblies having a nanoparticle catalyst supported on carbon nanorings. The carbon nanorings are formed from one or more carbon layers that form a wall that defines a generally annular nanostructure having a hole. The length of the nanoring is less than or about equal to the outer diameter thereof. The nanorings exhibit high surface area, high porosity, high graphitization, and/or facilitate mass transfer and electron transfer in fuel cell reactions.Type: GrantFiled: October 6, 2005Date of Patent: March 13, 2012Assignee: Headwaters Technology Innovation, LLCInventors: Gongquan Sun, Shuihua Tang, Shiguo Sun, Qin Xin, Changkun Liu, Bing Zhou