Including Flow Field Means (e.g., Separator Plate, Etc.) Patents (Class 429/514)
  • Patent number: 11444291
    Abstract: To provide a gas diffusion layer that allows reducing an increase in contact resistance with a separator and also allows reducing deterioration of gas diffusivity. The gas diffusion layer is disposed in contact with a separator including a grooved fluid flow passage. The gas diffusion layer includes a diffusion layer substrate and a water-repellent layer. The diffusion layer substrate has a ratio of a pore diameter to a thickness of 0.35 or more. The water-repellent layer is disposed on a surface of the diffusion layer substrate. The diffusion layer substrate is made of a carbon fiber. A content rate of the carbon fiber is 30% or more.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: September 13, 2022
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Takeaki Saito
  • Patent number: 11437198
    Abstract: A solid electrolytic capacitor that includes a multilayer body element having a number of first layers that are laminated together, the multilayer body element having first and second main surfaces that oppose each other in a lamination direction, first and second side surface that oppose each other in a width direction, and first and second end surfaces that oppose each other in a length direction; a sealing portion covering the first and the second main surfaces and the first and the second side surfaces, wherein in the first layers, a cutting region is formed at an end of the multilayer body element on a side of the second end surface and a sealing portion filled with a sealing material in the cutting region is exposed at the second end surface.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: September 6, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Takeshi Furukawa, Katsutomo Aritomi, Koji Fujimoto
  • Patent number: 11430995
    Abstract: A gas diffusion electrode is provided that enables the achievement of a fuel cell which has high drainage performance and maintains good power generation performance, while exhibiting high power generation performance particularly at a low temperature (40° C.), if used in the fuel cell. The gas diffusion electrode includes a microporous layer on at least one surface of a conductive porous substrate, wherein the microporous layer has a fluorine compound region having a length of 3-10 ?m and a void having a length of 3-10 ?m.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: August 30, 2022
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kazuyo Shigeta, Masamichi Utsunomiya
  • Patent number: 11387481
    Abstract: In a fuel cell stack and a method of producing the fuel cell stack, a first thickness of a first rubber seal member in a stacking direction before a tightening load is applied to a stack body is set such that, when the tightening load is applied to the stack body, a first amount of deformation of the first rubber seal member in the stacking direction is larger than a second amount of deformation of a top part of a first seal bead in the stacking direction.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: July 12, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Suguru Ohmori
  • Patent number: 11289715
    Abstract: A porous body for a fuel cell is interposed between a membrane-electrode assembly (MEA) and a bipolar plate to form a gas channel through which a reactant gas flows in a predetermined direction, the porous body including: a main body disposed to contact the bipolar plate; and a plurality of ribs each including a land portion disposed to contact the MEA and a connecting portion connecting the land portion to the main body, in which an area of the land portion is gradually narrowed from an upstream part to a downstream part of the gas channel.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 29, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jang Ho Jo, Soon Hong Park
  • Patent number: 11271222
    Abstract: A bipolar plate with an enhanced fluid flow field design is provided for improved flow uniformity. The bipolar plate includes an inlet, an outlet, and a flow field having a pattern defining a plurality of microchannels configured to provide fluid communication between the inlet and the outlet. The pattern includes a plurality of channels with discrete areas of discontinuity to direct fluid from the inlet to the outlet. The pattern is designed using an inverse permeability field and is based on a reaction-diffusion algorithm to model channel spacing, thereby providing a variable pitch microchannel pattern. In various aspects, Gray-Scott reaction-diffusion equations may be used to obtain an anisotropic microchannel layout. Methods may include optimizing a porous media model domain for one of: a minimum flow resistance across the domain, a uniform velocity across a direction of the domain, and a minimum velocity across a direction of the domain.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: March 8, 2022
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Ercan Mehmet Dede, Tsuyoshi Nomura
  • Patent number: 11217797
    Abstract: Various embodiments include fuel cell interconnects having a fuel distribution portion having an inlet opening, a fuel collection portion having an outlet opening, and a primary fuel flow field containing channels, wherein the fuel distribution portion comprises at least one raised feature defining a fuel distribution flow path, and the fuel distribution flow path is not continuous with the channels in the primary fuel flow field. The at least one raised feature may include, for example, a network of ribs and/or dots. Further embodiments include interconnects having a fuel distribution portion with a variable surface depth to provide variable flow restriction and/or a plenum with variable surface depth and raised a raised relief feature on the cathode side, and/or varying flow channel depths and/or rib heights adjacent a fuel hole.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: January 4, 2022
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: Daniel Darga, Cheng-Yu Lin, Vijay Srivatsan
  • Patent number: 11121380
    Abstract: The present disclosure relates to a fuel cell stack having a cathode-side separator and an anode-side separator which are made of different materials to prevent performance degradation of stacks and corrosion and damage of components. A fuel cell stack according to exemplary embodiments of the present disclosure may have multiple unit cells stacked therein, in which each unit cell of the multiple unit cells may include: a membrane electrode assembly (MEA); a pair of gas diffusion layers (GDLs) disposed on opposite surfaces of the MEA; and an anode-side separator and a cathode-side separator disposed to face each other, the MEA and the pair of GDLs being disposed therebetween, in which the cathode-side separator has a corrosion resistance higher than a corrosion resistance of the anode-side separator.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: September 14, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dae Il Yoon, Yoo Chang Yang
  • Patent number: 10971749
    Abstract: A method of producing an MEA includes a first joining step of joining an anode to one surface of a solid polymer electrolyte membrane to thereby form a joint body and a second joining step of joining a cathode to another surface of the solid polymer electrolyte membrane. In the first joining step, the solid polymer electrolyte membrane is attracted by suction and heated through the anode placed on a suction/heating surface of a suction/heating plate. In the second joining step, a stack body of the joint body and the cathode is pressed and heated in a stacking direction, between the suction/heating surface and a heating plate.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: April 6, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hiroyuki Nakatsuka, Seiichi Kouketsu, Masaya Igaki
  • Patent number: 10964956
    Abstract: A fuel cell stack assembly includes first and second bipolar plates, an active area membrane, and an optional subgasket. The first bipolar plate defines a first plurality of tunnels and the second bipolar plate defines a second plurality of tunnels. The second plurality of tunnels may be engaged with and nested between the first plurality of tunnels. The active area membrane may be disposed within an internal periphery of a subgasket between the first and second bipolar plates wherein the subgasket may, optionally, be positioned between the first and second plurality of tunnels.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: March 30, 2021
    Assignee: GM Global Technology Operations LLC
    Inventor: Jeffrey A. Rock
  • Patent number: 10944126
    Abstract: A positive electrode for a lithium ion secondary battery, including a positive electrode current collector, a conductive layer which is disposed directly or indirectly on the positive electrode current collector, and which includes a conductive particle, a polymer particle, and a fluororesin or a resin including a structural unit derived from a nitrile group-containing monomer, and a positive electrode active material layer disposed directly or indirectly on the conductive layer, as well as a lithium ion secondary battery using the same.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: March 9, 2021
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Eisuke Haba, Masashi Aotani, Hiroki Kuzuoka
  • Patent number: 10820380
    Abstract: Provided is an end cell heater for a fuel cell capable of preventing water existing in reaction cells of a fuel cell stack from being frozen to improve initial start ability and initial driving performance of the fuel cell at the time of cold-starting the fuel cell during winter by disposing heaters on end cells disposed at both ends of the fuel cell stack and capable of securing air-tightness and pressure resistance properties of air passages and fuel passages formed in the end cell.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: October 27, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Hanon Systems
    Inventors: Kil Sang Jang, Ju Han Kim
  • Patent number: 10811698
    Abstract: There are included a preparing step of preparing a separator base member having a core member of which surfaces are coated with a coating material having a higher radioparency than that of the core member; a press-forming step of press-forming the separator base member in a predetermined shape; and an examining step of examining the separator base member after the press-forming step using an X-ray having an output at which the X-ray passes through the coating material.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: October 20, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yasuhiro Nobata
  • Patent number: 10784524
    Abstract: A first metal separator of a power generation cell includes boss pairs. Each of the boss pairs includes two first bosses provided adjacent to a hole and adjacent to each other between a passage bead and an oxygen-containing gas flow field. A gap facing the hole is formed between the two first bosses. The second metal separator includes one second boss facing the boss pair through a resin film. The second boss extends over the two first bosses as viewed in a separator thickness direction.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: September 22, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yu Tomana, Kentaro Ishida
  • Patent number: 10777824
    Abstract: An input reactant flow guiding arrangement for a solid oxide electrolyzer cell includes a flow distribution area and a flow outlet area, each on the flow field plate. The arrangement guides input reactant flow to the flow distribution area from sides of the electrolyzer cell, and turns at least one of the input reactant feed flow and the input reactant outlet flow to equalize flow distribution on an electrolyte element. A reactant flow adjusting structure with flow restriction orifices has at least one geometrical shape for adjusting homogenously at least one of the input reactant feed flow and input reactant outlet flow over an electrolyte element based on a flow functional effect of the at least one geometrical shape of the flow adjusting structure, the flow adjusting structure having flow restriction orifices of definable height and a gasket structure having at least partly an elliptical shape.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: September 15, 2020
    Assignee: ELCOGEN OY
    Inventors: Matti Noponen, Olli Himanen, Jari Pennanen
  • Patent number: 10686199
    Abstract: A fuel cell anode flow field includes at least one flow channel with a cross-sectional area that varies along at least a portion of its length. In some embodiments, the channel width decreases along at least a portion of the channel length according to a natural exponential function. This type of anode flow field can improve performance, reduce fuel consumption and/or reduce detrimental effects such as carbon corrosion and catalyst degradation, thereby improving fuel cell longevity and durability. When operating the fuel cell on either a substantially pure or a dilute fuel stream, this type of anode flow field can provide more uniform current density. These flow channels can be incorporated into reactant flow field plates, fuel cells and fuel cell stacks.
    Type: Grant
    Filed: February 14, 2015
    Date of Patent: June 16, 2020
    Assignee: Loop Energy Inc.
    Inventors: David E. Leger, Greg J. Montie
  • Patent number: 10658694
    Abstract: The invention relates to a polar plate for a fuel cell, comprising at least one single plate with two opposing main sides, wherein the single plate has, on at least one of its main sides: elevations and free spaces arranged therebetween, which form a flow structure for an operating medium of the fuel cell; and spring projections which are arranged on the elevations and are designed to yield in case of a force effect taking place orthogonally to the main sides. Furthermore, the invention relates to a fuel cell stack with a polar plate according to the invention.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: May 19, 2020
    Assignees: VOLKSWAGEN AG, AUDI AG
    Inventors: Adel Jilani, Sanjiv Kumar
  • Patent number: 10629868
    Abstract: The present application relates to a battery module and an end plate of the battery module. The end plate includes a body and connecting plates connected to edges of the body. The body has a different material from that of the connecting plate. The connecting plates extend along a height direction of the battery module. The body is fixedly connected to side plates of the battery module through the connecting plates. When the end plate is designed, the body can utilize a lower density material, so that the thickness of the body can be appropriately increased, which enables the case of the battery module to be not easily deformed due to the battery's expansion force. Further, the connecting plate can employ a material capable of improving the weld strength between the end plates and the side plates.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: April 21, 2020
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventor: Gen Cao
  • Patent number: 10516167
    Abstract: A bipolar plate assembly for a fuel cell includes a cathode plate disposed adjacent an anode plate. The cathode and anode plates are formed having a first thickness of a low contact resistance, high corrosion resistance material by a deposition process. The first and second unipolar plates are formed on a removable substrate, and a first perimeter of the first unipolar plate is welded to a second perimeter of the second unipolar plate to form a hermetically sealed coolant flow path.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: December 24, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Gayatri Vyas Dadheech, Gerald W. Fly
  • Patent number: 10381657
    Abstract: A bipolar plate for a fuel cell comprises a fiber reinforcement structure containing thermoplastically bonded carbon fibers, the fiber reinforcement structure being multilayered and comprising a plurality of fiber reinforcement structure layers, at least two of which contain thermoplastically bonded carbon fibers.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: August 13, 2019
    Assignee: Röchling Automotive SE & Co. KG
    Inventors: Fabrizio Chini, Edoardo Martelli, Manfred Kampke
  • Patent number: 10381660
    Abstract: A separator for a fuel cell includes a thin metal plate, a protrusion formed on the thin metal plate, a gas passage formed by the protrusion, and a trap that is formed by forming a recess in a wall portion of the protrusion such that the trap is provided in the gas passage to correspond to the recess.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: August 13, 2019
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki Hirata
  • Patent number: 10381659
    Abstract: A fuel cell is provided that includes a cell structure, a pair of separators and a plurality of at least partially porous ribs. The cell structure includes an anode, a cathode and an electrolyte membrane, the anode and the cathode being laminated on opposite sides of the electrolyte membrane, respectively. The separators are disposed on both surfaces of the cell structure with gas passages being defined by the separators and the cell structure for circulating two types of gas for power generation. The porous ribs porous ribs are disposed successively on an entire cross-section of the gas passage in a transverse direction with a flow direction of the gas for power generation.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: August 13, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Koudai Yoshizawa
  • Patent number: 10283785
    Abstract: An amorphous carbon film contains carbon as a main component, not more than 30 at. % of hydrogen, not more than 20 at. % of nitrogen and not more than 3 at. % of oxygen (all excluding 0 at. %), and when the total amount of the carbon is taken as 100 at. %, the amount of carbon having an sp2 hybrid orbital is not less than 70 at. % and less than 100 at. %. Nitrogen and oxygen are concentrated on a surface side of the film and when detected from a surface layer by X-ray photoelectron spectroscopy, oxygen content ratio is not less than 4 at. % and not more than 15 at. % and nitrogen content ratio is not less than 10 at. % and not more than 30 at. %.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: May 7, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Iseki, Kazuyuki Nakanishi, Yasuhiro Ozawa, Naoki Ueda, Masafumi Koizumi
  • Patent number: 10256479
    Abstract: A bipolar plate, including conductive sheets, and in which flow channels are made between the conductive sheets and are in communication with a coolant inlet and outlet manifolds. An outer face of a conductive sheet includes first ribs delimiting reactant flow channels, and a second rib extending on the side of the reactant flow channels. A sealing gasket extends at least partially on the second rib. The outer face of the conductive sheet further includes third ribs extending between a first rib and the second rib, between which an alternation of third ribs and of indentation is formed. The sheets are in contact at the level of indentations, and respective passages are formed under the third ribs.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: April 9, 2019
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventor: Jean-Philippe Poirot-Crouvezier
  • Patent number: 10224563
    Abstract: A frame body that is a part of a flat cell frame for a cell stack of a redox flow battery, and that supports, on an outer peripheral side of a bipolar plate of the cell frame, the bipolar plate, the frame body including a frame-facing surface that is to face, when a plurality of the cell frames are stacked, a frame body of another cell frame that is adjacent to the cell frame in a stacking direction, wherein the frame-facing surface has a surface roughness Ra of 0.03 ?m or more and 3.2 ?m or less.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: March 5, 2019
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hayato Fujita, Takashi Kanno, Kenji Motoi, Takeshi Yamana
  • Patent number: 10138340
    Abstract: A bilayer object consisting of a carbon fiber reinforced polymer substrate coated with a composition of matter comprising horizontally aligned exfoliated graphene sheets dispersed in an epoxy binder. A method includes depositing graphene into a hardener, mixing the hardener and the graphene to produce a homogenous composite mixture, adding a resin material to the composite mixture to produce an epoxy graphene material, coating a structure with the epoxy graphene material, aligning the graphene sheets in the in-plane orientation, and curing the epoxy graphene material.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: November 27, 2018
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Gabriel Iftime, Quentin Van Overmeere, David Mathew Johnson
  • Patent number: 10050287
    Abstract: A bipolar plate, including conductive sheets. An outer face of one of the conductive sheets includes first ribs, a second rib, and third ribs. The first ribs delimit fuel flow channels and the second rib extends on the side of the reactant flow channels, on which a gasket extends. Between a first rib and the second rib, the third ribs extend and an alternation of third ribs and of indentations is formed. The height between the third ribs and the indentations are at least equal to 75% of the total height of the flow channels. An outer face of the other of the conductive sheets includes fourth ribs and fifth ribs. The fourth ribs delimit oxidant flow channels. The fifth rib extends plumb with the second rib and a gasket extends along the fifth rib.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: August 14, 2018
    Assignee: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventor: Jean-Philippe Poirot-Crouvezier
  • Patent number: 9966612
    Abstract: The fuel flow channels (20a) of the end fuel cell (9a) at the anode end (34) of a fuel cell stack are significantly deeper than the fuel flow field channels (20) of the remaining fuel cells (9) in the stack, whereby fuel starvation caused by ice in the fuel flow channels is avoided during cold startup. The fuel flow field channels of the end cell (9) at the anode end of the stack is between about 0.15 mm and about 1.5 mm deeper than the fuel flow field channels in the remaining fuel cells of the stack, or between about 35% and about 65% deeper than the fuel flow field channels in the remaining fuel cells of the stack.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: May 8, 2018
    Assignee: Audi AG
    Inventors: Timothy W. Patterson, Jr., Robert M. Darling
  • Patent number: 9960433
    Abstract: A gas channel forming member is located between a separator and a membrane electrode assembly. The gas channel forming member includes gas channels, which are arranged in parallel with each other on a surface that faces the membrane electrode assembly, water channels, which are formed on a surface that faces the separator, and inner communication passages. The water channels are each located between adjacent two of the gas channels. The inner communication passages communicate the gas channels and the water channels with each other. Each water channel is formed such that the flow cross-sectional area in an outlet section including an outlet opening is larger than the cross-sectional area of an upstream section, which is upstream of an adjacent to the outlet section in the flow direction of the oxidant gas.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: May 1, 2018
    Assignee: Toyota Shatai Kabushiki Kaisha
    Inventors: Keiji Hashimoto, Kousuke Kawajiri, Satoshi Futami
  • Patent number: 9902113
    Abstract: There is provided a method for manufacturing a three-dimensional shaped object, comprising the steps of: (i) forming a solidified layer by irradiating a predetermined portion of a powder layer with a light beam, thereby allowing sintering of the powder of the predetermined portion or melting and subsequent solidification thereof; and (ii) forming another solidified layer by newly forming a powder layer on the resulting solidified layer, and then irradiating another predetermined portion of the new powder layer with the light beam, the steps (i) and (ii) being repeatedly performed, wherein the three-dimensional shaped object is manufactured such that it has three different solidified portions of high-density, intermediate-density and low-density solidified portions in at least a part of the object, and wherein the intermediate-density solidified portion is formed to be located in a part of a surface of the three-dimensional shaped object.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: February 27, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Isamu Matsumoto, Satoshi Abe, Masataka Takenami, Yoshiyuki Uchinono
  • Patent number: 9865882
    Abstract: According to one embodiment, the noble metal catalyst layer includes first noble metal layer and a second noble metal layer formed on the first noble metal layer. The first noble metal layer includes a first noble metal element and has a porosity of 65 to 95 vol. %, a volume of pores having a diameter of 5 to 80 nm accounts for 50% or more of a volume of total pores in the first noble metal layer. The second noble metal layer includes a second noble metal element, and has an average thickness of 3 to 20 nm and a porosity of 50 vol. % or less.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: January 9, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Wu Mei, Shigeru Matake, Taishi Fukazawa, Yoshihiro Akasaka, Katsuyuki Naito
  • Patent number: 9748583
    Abstract: Bipolar plate assemblies are disclosed in which the transition fuel channels are offset from the transition oxidant channels in the transition regions on the active sides of the plates. This configuration allows for a reduced pressure drop in the coolant flow in the transition regions on the inactive, coolant side of the plates and thereby improves coolant flow sharing. The assemblies are suitable for use in high power density solid polymer electrolyte fuel cell stacks.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: August 29, 2017
    Assignees: Daimler AG, Ford Motor Company
    Inventors: Richard Fellows, Simon Farrington
  • Patent number: 9685651
    Abstract: In one example, a system for a flow cell for a flow battery, comprising: a first flow field; and a polymeric frame, comprising: a top face; a bottom face, opposite the top face; a first side; a second side, opposite the first side; a first electrolyte inlet located on the top face and the first side of the polymeric frame; a first electrolyte outlet located on the top face and the second side of the polymeric frame; a first electrolyte inlet flow path located within the polymeric frame and coupled to the first electrolyte inlet; and a first electrolyte outlet flow path located within the polymeric frame and coupled to the first electrolyte outlet. In this way, shunt currents may be minimized by increasing the length and/or reducing the cross-sectional area of the electrolyte inlet and electrolyte outlet flow paths.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: June 20, 2017
    Assignee: ESS Tech, Inc.
    Inventors: Craig Evans, Yang Song
  • Patent number: 9614244
    Abstract: A system for a flow cell for a hybrid flow battery, comprising: a redox plate comprising a plurality of electrolyte flow channels; conductive inserts attached to the redox plate between adjacent electrolyte flow channels; a redox electrode attached to a surface of the redox plate; a plating electrode, comprising: a plurality of folded fins with an oscillating cross-section, the plurality of folded fins comprising: a first planar surface; a second planar surface, parallel to the first planar surface; a plurality of ridges intersecting the first and second planar surfaces such that the plurality of ridges divide the first planar surface into a first plurality of strips, and divide the second planar surface into a second plurality of strips; and a membrane barrier. In this way, the capacity and performance of hybrid flow batteries may be maximized, through decreasing the reaction kinetics, mass transport and ohmic resistance losses at both electrodes.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: April 4, 2017
    Assignee: ESS Tech, Inc.
    Inventors: Craig Evans, Yang Song
  • Patent number: 9608281
    Abstract: A new conductive interconnected porous film, useful as a material for a gas diffusion layer which is used in a solid polymer type fuel cell, which satisfies the requirements of a good conductivity, good gas permeability, surface smoothness, corrosion resistance, and low impurities and which is strong in bending and excellent in handling to an extent not obtainable by existing sheet materials of carbon fiber, that is, a conductive interconnected porous film wherein a resin base material part of a thermoplastic resin has a porous interconnected cell structure which is formed by removal of removable particulate matter and has cells of sizes of 10 ?m to 50 ?m and wherein the resin base material part is comprised of different particle size particles of first carbon particles of large size carbon particles of a diameter of 5 ?m or more and second carbon particles of micro size carbon particles of a diameter of 10 nm or more mixed together, and a method of production of the same.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: March 28, 2017
    Assignee: FUTAMURA KAGAKU KABUSHIKI KAISHA
    Inventors: Takuzo Imaizumi, Hiroaki Nagata, Naoki Shiba
  • Patent number: 9461314
    Abstract: A fuel cell interconnect includes a first side containing a first plurality of channels and a second side containing a second plurality of channels. The first and second sides are disposed on opposite sides of the interconnect. The first plurality of channels are configured to provide a serpentine fuel flow field while the second plurality of channels are configured to provide an approximately straight air flow field.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: October 4, 2016
    Assignee: BLOOM ENERGY CORPORATION
    Inventor: James F. McElroy
  • Patent number: 9387656
    Abstract: A method for connecting component parts (1, 2, 3) of a fuel cell. A photochemically curable adhesive (5) is applied in liquid form at least regionally to at least one component part (1, 2, 3) of the fuel cell, is photochemically pre-cured, is brought into contact with at least one further component part (1, 2, 3) of the fuel cell and is cured. The photochemically curable adhesive (5) is photochemically pre-cured to differing degrees in at least two component part regions (B1, B2) of the component part (1, 2, 3). Furthermore, an apparatus for connecting component parts (1, 2, 3) of a fuel cell.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: July 12, 2016
    Assignee: Daimler AG
    Inventor: Christian Wulff
  • Patent number: 9337496
    Abstract: A stainless steel separator for fuel cells and a method of manufacturing the same are disclosed. The method includes preparing a stainless steel sheet as a matrix, performing surface modification on a surface of the stainless steel sheet to form a Cr-rich passive film having a comparatively increased amount of Cr in a superficial layer of the stainless steel sheet by decreasing an amount of Fe in the superficial layer of the stainless steel sheet, and forming a coating layer on the surface of the surface-modified stainless steel sheet. The coating layer is one selected from a metal nitride layer (MNx), a metal/metal nitride layer (M/MNx), a metal carbide layer (MCy), and a metal boride layer (MB) (where 0.5?x?1, 0.42?y?1, 0.5?z?2).
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: May 10, 2016
    Assignee: HYUNDAI STEEL COMPANY
    Inventors: Yoo Taek Jeon, Kyeong Woo Chung
  • Patent number: 9337495
    Abstract: A stainless steel separator for fuel cells and a method of manufacturing the same are disclosed. The method includes preparing a stainless steel sheet as a matrix, performing surface modification on a surface of the stainless steel sheet to form a Cr-rich passive film having a comparatively increased amount of Cr in a superficial layer of the stainless steel sheet by decreasing an amount of Fe in the superficial layer of the stainless steel sheet, and forming a coating layer on the surface of the surface-modified stainless steel sheet. The coating layer is one selected from a metal nitride layer (MNx), a metal/metal nitride layer (M/MNx), a metal carbide layer (MCy), and a metal boride layer (MBz) (where 0.5?x?1, 0.42?y?1, 0.5?z?2).
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: May 10, 2016
    Assignee: HYUNDAI STEEL COMPANY
    Inventors: Yoo Taek Jeon, Kyeong Woo Chung
  • Patent number: 9331343
    Abstract: A stainless steel separator for fuel cells and a method of manufacturing the same are disclosed. The method includes preparing a stainless steel sheet as a matrix, performing surface modification on a surface of the stainless steel sheet to form a Cr-rich passive film having a comparatively increased amount of Cr in a superficial layer of the stainless steel sheet by decreasing an amount of Fe in the superficial layer of the stainless steel sheet, and forming a coating layer on the surface of the surface-modified stainless steel sheet. The coating layer is one selected from a metal nitride layer (MNx), a metal/metal nitride layer (M/MNx), a metal carbide layer (MCy), and a metal boride layer (MBz) (where 0.5?x?1, 0.42?y?1, 0.5?z?2).
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: May 3, 2016
    Assignee: HYUNDAI STEEL COMPANY
    Inventors: Yoo Taek Jeon, Kyeong Woo Chung
  • Publication number: 20150140472
    Abstract: The present invention provides a composite separator for a polymer electrolyte membrane fuel cell (PEMFC) and a method for manufacturing the same, in which a graphite foil prepared by compressing expanded graphite is stacked on a carbon fiber-reinforced composite prepreg or a mixed solution prepared by mixing graphite flake and powder with a resin solvent is applied to the cured composite prepreg such that a graphite layer is integrally molded on the outermost end of the separator.
    Type: Application
    Filed: January 26, 2015
    Publication date: May 21, 2015
    Inventors: Dai Gil Lee, Ha Na Yu, Jun Woo Lim, Sae Hoon Kim, Jung Do Suh, Byung Ki Ahn
  • Patent number: 9034535
    Abstract: There is provided a flexible circuit board capable of preventing corrosion and elution of a conductor layer constituting a current collector even under high-temperature and high-voltage working conditions while achieving sufficient electric connection with an MEA. A flexible circuit board having a current collector of a fuel cell provided thereon includes an insulating flexible base material 1, a plurality of openings 5 that supply fuel or air, the openings 5 being provided in a specified region so as to penetrate through the flexible base material 1 in a thickness direction, a plating film 6 that constitutes the current collector, the plating film 6 being formed on front and back surfaces of the flexible base material 1 in the specified region and on inner walls of the openings 5, a surface treatment film 9 formed on the plating film 6 and having corrosion resistance higher than that of the plating film.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: May 19, 2015
    Assignee: NIPPON MEKTRON, LTD
    Inventor: Masanori Hirata
  • Publication number: 20150125777
    Abstract: A separator for fuel cells is provided. The separator includes: a base material; an underlying alloy layer formed on the base material; and a gold plate layer formed on the underlying alloy layer. The separator is characterized in that the underlying alloy layer is formed of an M1-M2-M3 alloy (where M1 is at least one element selected from Ni, Fe, Co, Cu, Zn and Sn, M2 is at least one element selected from Pd, Re, Pt, Rh, Ag and Ru, and M3 is at least one element selected from P and B).
    Type: Application
    Filed: January 13, 2015
    Publication date: May 7, 2015
    Inventor: Nobuaki MUKAI
  • Publication number: 20150125782
    Abstract: A fuel cell plate assembly (400) comprising: a bipolar plate (102) having a port (104) for receiving a fluid; a fluid diffusion layer (210); and an electrode defining an active area (105). The fluid diffusion layer is configured to communicate a fluid received at the port (104) to the active area (105).
    Type: Application
    Filed: May 20, 2013
    Publication date: May 7, 2015
    Inventor: Peter David Hood
  • Patent number: 9023547
    Abstract: A separator of a fuel cell includes a sandwiching section, first and second bridges connected to the sandwiching section, a fuel gas supply section connected to the first bridge and an oxygen-containing gas supply section connected to the second bridge. The sandwiching section sandwiches an electrolyte electrode assembly, and has a fuel gas channel and an oxygen-containing gas channel separately. In the sandwiching section, a plurality of first projections are arranged in a zigzag pattern in a direction in which the first bridge extends, and the first projections at least protrude toward the fuel gas channel to contact an anode.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: May 5, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hiroki Homma, Tsutomu Takahashi, Tetsuya Ogawa
  • Patent number: 9017895
    Abstract: A fuel cell plate assembly includes a first plate having a feed region and an active region. A plurality of flow channels is formed in the first plate and connects the feed region and the active region. The first plate further includes a first step oriented transverse to the flow channels in the feed region and a second step oriented transverse to the flow channels in the active region. The second step is formed only in the flow channels of the first plate.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: April 28, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Jeffrey A. Rock, Gerald W. Fly, Steven J. Spencer
  • Patent number: 9005834
    Abstract: A polymer electrolyte fuel cell comprises a plurality of stacked cells each having an ionic conductive electrolyte membrane, an anode placed on one side of the electrolyte membrane, a cathode placed on the other side of the electrolyte membrane, and a conductive separator on which a first refrigerant channel for flow of a refrigerant is formed in center part thereof. The separator comprises penetration holes constituting a manifold which extend in a direction of stacking of the plurality of cells and through which the refrigerant flows and second refrigerant channels for communication between the penetration holes and the first refrigerant channel. A plurality of protrusions that protrude into the penetration holes from parts of wall surfaces of the penetration holes that are located peripherally in connection parts between the penetration holes and the second refrigerant channels.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: April 14, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Mitsuo Yoshimura, Hirokazu Honkawa, Kenji Arai
  • Patent number: 9005846
    Abstract: A partly oxidized substrate is disclosed. According to one aspect, the substrate is formed by subjecting a substrate made of a porous metal or metal alloy including particles of at least one metal or metal alloy bound by sintering. The substrate includes a first main surface and a second main surface. The porosity of the substrate gradually changes from the first main surface to the second main surface. The substrate is partially oxidized by an oxidizing gas such as oxygen and/or air. A method for preparing the substrate and high temperature electrolyzer (THE) cell including the substrate are also disclosed.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: April 14, 2015
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventors: Julie Mougin, Thomas Pietri
  • Patent number: 8999605
    Abstract: One exemplary embodiment discloses a bipolar plate assembly including a cathode plate and an anode plate. Each of the cathode plate and the anode plate includes a core material, a first surface material coupled to a first side of the core material, and a second surface material coupled to a second side of the core material, wherein the first surface material and the second surface material have a different composition from the core material.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: April 7, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: John R. Bradley, Mahmoud H. Abd Elhamid
  • Patent number: 8999603
    Abstract: A gas diffusion layer for fuel cell of the present invention is structured with a porous member mainly comprised of conductive particles such as acetylene black, graphite and a polymer resin such as PTFE. This makes it possible to achieve both an improvement in power generation performance of the fuel cell and a reduction in costs.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: April 7, 2015
    Assignee: Panasonic Corporation
    Inventors: Masaki Yamauchi, Yoichiro Tsuji