Abstract: A main object of the present invention is to provide an air cathode capable of achieving both high initial discharge capacity and high capacity retention. In the present invention, the problem is solved by providing an air cathode used in a metal-air battery, comprising: an air cathode layer containing a conductive material, a particulate catalyst and a fibrous catalyst; and an air cathode current collector for collecting current of the air cathode layer, wherein the ratio of the fibrous catalyst to the total weight of the particulate catalyst and the fibrous catalyst is 10% by weight or less.

Abstract: Provided is a power generation cell for a solid electrolyte fuel cell using a lanthanum gallate solid electrolyte as a solid electrolyte, particularly a structure of a fuel electrode of the power generation cell for the solid electrolyte fuel cell. The fuel electrode is of a power generation cell for a solid electrolyte fuel cell in which particles (2) of a B-doped ceria (wherein, B represents one or two or more of Sm, La, Gd, Y and Ca) are attached to the surface of the framework of porous nickel having a framework structure in which a network is formed by mutual sintering of nickel particles (1). The ceria particles (2) are distributed with the highest density and attached around the framework structure portions (3) the sectional areas of which are made small by the mutual sintering of the nickel particles (1) to be bonded to each other.

Abstract: A unitized electrode assembly for a fuel cell comprising an electrolyte membrane and a subgasket. The subgasket maximizing an operating life of the electrolyte membrane, militating against adverse effects of membrane expansion during use of the fuel cell and membrane shearing under unitized electrode assembly compression.

Abstract: A solid oxide fuel cell having a fuel electrode, a solid electrolyte film, an air electrode, and a conductive current-collecting mesh bonded to an upper surface, opposite to a lower bonding surface with the solid electrolyte film, of the air electrode. Plural bonding portions that are bonded to the current-collecting mesh and plural non-bonding portions that are not bonded to the current-collecting mesh are present on the upper surface of the air electrode. In the air electrode, regions having a porosity smaller than a porosity of the other region are respectively formed on the position in the middle of the thickness of the air electrode from each bonding portion. The average of the porosity of the dense portion is 20% or more and less than 35%, while the average of the porosity of the porous portion is 35% or more and less than 55%.

Abstract: Provided is a gas diffusion layer for a fuel cell, wherein a reactive gas passage groove for distributing a reactive gas is formed in one principal surface of the gas diffusion layer, and a reinforcing member is provided along the reactive gas passage grooves. Thus, the deformation of the gas diffusion layer due to a fastening pressure can be suppressed to improve the power generation performance.

Abstract: In one embodiment, in a fuel cell, a first electrode supplied with an oxidant gas includes a first gas diffusion layer having a first porous base material and a first catalyst layer having a second porous base material. The first catalyst layer is stacked to the first gas diffusion layer. The second porous base material has a pore diameter distribution with a peak in a range of 0.04 ?m to 0.12 ?m, and a volume ratio of pores with diameters of 0.04 ?m to 0.12 ?m to all the pores being 17% or more. A second electrode supplied with a fuel includes a second gas diffusion layer having a third porous base material and a second catalyst layer having a fourth porous base material. The second catalyst layer is stacked to the second gas diffusion layer. An electrolyte film is held between the first and second catalyst layers.

Abstract: A fuel distribution structure including a first material layer, a second material layer, a flow channel layer and a filler is provided. The first material layer has a fuel inlet, the second material layer has a plurality of fuel outlets, the flow channel layer has a patterned flow channel, wherein the fuel inlet and the fuel outlets are covered by a distribution range of the patterned flow channel, and the filler is disposed in the patterned flow channel. In addition, a fuel cell having the above-mentioned fuel distribution structure is also provided.

Abstract: 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.

Abstract: There are provided an electrode material for a fuel cell, a fuel cell comprising the same, and a method of manufacturing the fuel cell. The electrode material for a fuel cell comprises an electrode base material and spherical polystyrene particles forming pores on the electrode base material through heat treatment. In the case of the electrode material according to an exemplary embodiment of the present invention, the average particle size and content of the spherical polystyrene particles may be controlled to form pores having a uniform size on a sintering body formed of the electrode base material, and the control of the porosity thereof may be facilitated.

Abstract: The fuel cell membrane electrode assembly includes PtRu active species supported on mesoporous carbon nitride materials for use in the anode of direct methanol fuel cells. The fuel cell membrane electrode assembly includes an anode plate, a gas diffusion layer, and a catalyst adjacent a PEM membrane. The composition of the catalyst is about 30 wt % active species and 70 wt % support materials. The nitrided PtRu on a mesoporous carbon support provides enhanced hydrogen adsorbing capacity to accelerate the rate of oxidation of methanol at the anode of a direct methanol fuel cell, resulting in greater efficiency of the fuel cell.

Abstract: A membrane-membrane reinforcing member assembly includes: a polymer electrolyte membrane (1) having a substantially square shape; a pair of membrane-like first membrane reinforcing members (10a) disposed on one main surface of the polymer electrolyte membrane (1) so as to extend along a pair of opposed sides, respectively, of four sides of said one main surface; and a pair of membrane-like second membrane reinforcing members (10b) disposed on another main surface of the polymer electrolyte membrane (1) so as to extend along a pair of opposed sides, respectively, of four sides of said another main surface, wherein: portions of the polymer electrolyte membrane (1) at which portions the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) are disposed are concave; and the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) are disposed such that main surfaces thereof are exposed, and the first membrane reinforcing me

Abstract: The invention relates to a catalyst-coated ion-conducting membrane and a membrane-electrode assembly (MEA) for electrochemical devices, in particular for fuel cells. The catalyst-coated, ion-conducting membrane is provided with a sealing material which is applied in the edge region to one side of the membrane and has a thickness which corresponds to at least the total thickness of the catalyst-coated membrane. Owing to their simple, material-conserving construction, the catalyst-coated ion-conducting membranes and the membrane-electrode assemblies produced therefrom can be manufactured inexpensively. They are used in PEM fuel cells, direct methanol fuel cells (DMFCs), electrolysers and other electrochemical devices.

Abstract: A hydrogen fuel system for an internal combustion engine includes a water reservoir and a fuel cell in fluid communication with the water reservoir. An oxygen line is fluidly coupled to the hydrogen fuel cell and receives and transports oxygen away from the fuel cell. A hydrogen line is fluidly coupled to the fuel cell and receives and transports hydrogen away from the fuel cell. An engine gas interface is fluidly coupled to the oxygen line and the hydrogen line, and operatively coupled to an engine intake. The engine gas interface receives oxygen and hydrogen from the oxygen and hydrogen lines, and introduces the hydrogen and oxygen into the engine intake. A vibration sensor is operatively coupled to the engine gas interface to detect engine vibration of the internal combustion engine, and deactivates the fuel when the sensor does not detect vibration from the engine.

Abstract: Steam, partial oxidation and pyrolytic fuel reformers (14 or 90) with rotating cylindrical surfaces (18, 24 or 92, 96) that generate Taylor Vortex Flows (28 or 98) and Circular Couette Flows (58, 99) for extracting hydrogen from hydrocarbon fuels such as methane (CH4), methanol (CH3OH), ethanol (C2H5OH), propane (C3H8), butane (C4H10), octane (C8H18), kerosene (C12H26) and gasoline and hydrogen-containing fuels such as ammonia (NH3) and sodium borohydride (NaBH4) are disclosed.

Abstract: A membrane membrane-reinforcement-member assembly, membrane catalyst-layer assembly, membrane electrode assembly, and polymer electrolyte fuel cell are provided, which are so configured as to ensure sufficient durability and a cost reduction in unit cells and be suited for mass production. To this end, a membrane membrane-reinforcement-member assembly (20) of a membrane catalyst-layer assembly (30) provided in an MEA (5) of a cell (100) has a polymer electrolyte membrane (1), a pair of first membrane reinforcement members (10a) and a pair of second membrane reinforcement members (10b) which members (10a), (10b) are embedded in the polymer electrolyte membrane (1) such that their main surfaces are not exposed therefrom. The first and second membrane reinforcement members (10a), (10b) are embedded in a parallelogrammatic fashion so as to overlap each other in the four corners of the polymer electrolyte membrane (1) when viewed in a thickness direction of the polymer electrolyte membrane.

Abstract: 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.

Abstract: A membrane and catalyst composite includes an ion-conducting membrane having a surface for the passage of ions, and having a near boundary layer that includes the surface and extends a distance into the membrane. A layer of electrocatalyst particles are embedded in the near boundary layer of the membrane to produce an electrode. The electrode has a porosity that allows the flow of gas through the electrode, and it has a surface roughness that increases the catalytically-active area of the electrode.

Abstract: It relates to a solid oxide fuel cell (SOFC) with internal reforming of hydrocarbons, in which said cell is a metal-supported cell comprising a porous metallic support comprising pores having walls, said porous support comprising a first main surface and a second main surface, an anode adjacent to said second main surface, an electrolyte adjacent to said anode, and a cathode adjacent to said electrolyte, a catalyst for reforming at least one hydrocarbon being deposited on the walls of the pores of the porous metallic support, and the amount and concentration of catalyst in the porous metallic support decreasing in a direction from the first main surface in the same direction as a flow direction of a hydrocarbon feed stream, along said first main surface on the outside of the cell.

Abstract: The present invention provides a porous electrode substrate that has high sheet strength, low production cost, and sufficient gas permeability and electrical conductivity, and a method for producing the same. In the present invention, the porous electrode substrate is produced by producing a precursor sheet including short carbon fibers (A), and one or more types of short precursor fibers (b) that undergo oxidation and/or one or more types of fibrillar precursor fibers (b?) that undergo oxidation, all of which are dispersed in a two-dimensional plane, subjecting the precursor sheet to entanglement treatment to form a three-dimensional entangled structure, then impregnating the precursor sheet with carbon powder and fluorine-based resin, and further heat treating the precursor sheet at a temperature of 150° C. or higher and lower than 400° C.

Abstract: 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).

Abstract: The present invention relates to a process for operating a fuel cell, especially for operating a fuel cell in which the electrolyte responsible for the proton conduction is volatile. By means of the process according to the invention, better operation of such a fuel cell is possible, and they exhibit an improved lifetime.

Abstract: The method for fabrication of the electrochemical energy converter characterised in that, cermet composition (2A)1 (2B) is applied on both sides of the central ceramic plate (1), wherein on both sides of the plate in the cermet composition (2A), (2B), channels (3A), (3B) are made, then the channels (3A), (3B) on both sides of the plate are covered with cermet composition layers (4A), (4B). Afterwards, both sides of the ceramic structure made in such a way are overlaid with conductive structures (5A), (5B) and then with subsequent layers of the cermet composition (6A). (6B) containing nickel, then both sides of the ceramic structure prepared in a such way are subsequently overlaid with: layers constituting the solid electrolyte (7A), (7B), layers constituting electrodes (8A), (8B) and contact layers (9A), (9B). The electrochemical energy converter has a flat layered ceramic base whose core is constituted by the central ceramic plate (D, permanently bonded with porous cermet layers (AN1).

Abstract: 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.

Abstract: Provided are a solid oxide fuel cell and a method of manufacturing the same. The solid oxide fuel cell in which at least one or more unit modules are stacked and integrated with each other includes first and second solid electrolyte layers in which each of the unit modules includes a plurality of fuel electrodes spaced a predetermined distance from each other and each having a strip shape and first and second supports each including a plurality of slits each having the same strip shape as that of each of the fuel electrodes. The first and second solid electrolyte layers overlap with each other on lower and upper sides of the first support so that the fuel electrodes face each other within the slits of the first support, and the second support overlaps with a lower side of the first or second solid electrolyte layer overlapping with the lower side of the first support so that the slits of the second support are disposed perpendicular to the slits of the first support.

Abstract: An electrochemical cell includes an anode including an anode catalyst, a cathode including a cathode catalyst, and a first set of proton-conducting metal nanoparticles between the anode and the cathode, such that the first set of proton-conducting metal nanoparticles is not in contact with the anode. The cathode may be a cathode assembly including a gas diffusion electrode, a cathode catalyst on the gas diffusion electrode, and proton-conducting metal nanoparticles on the cathode catalyst.

Abstract: An assembling operation of a fuel cell is effectively simplified. With the simple and economical structure, the desired sealing function is achieved. The fuel cell includes a membrane electrode assembly and first and second metal separators sandwiching the membrane electrode assembly. Connection channels are provided on the first metal separator. The connection channels connect the oxygen-containing gas supply passage and the oxygen-containing gas discharge passage to the oxygen-containing gas flow field. The membrane electrode assembly has first overlapping portions overlapped on the connection channels for sealing the connection channels. The first overlapping portions comprise, in effect, a gas diffusion layer.

Abstract: A graded electrode is described. The graded electrode includes a substrate; and at least two electrode layers on the substrate forming a combined electrode layer, a composition of the at least two electrode layers being different, the combined electrode layer having an average level of the property that changes across the substrate. Fuel cells using graded electrodes and methods of making graded electrodes are also described.

Abstract: A method for manufacturing an electrode including: binding catalyst particles and porous carbon particles to a base material to form a catalyst porous structure; preparing an electrolyte precursor mixture containing a polymerizable electrolyte precursor represented by (R1O)3Si—R2—SO3H (wherein, R1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and R2 represents an alkylene group having 1 to 15 carbon atoms), a polymerizable spacer precursor represented by (R3O)mSiR4n (wherein, R3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and R4 represents —(CH2)x—(CF2)y—CF3), and a solvent; impregnating the catalyst porous structure with the electrolyte precursor mixture to form a catalyst-electrolyte precursor complex; and performing a copolymerization reaction of the aforementioned compounds in the complex to form a water-insoluble polymer electrolyte layer containing a copolymer.

Abstract: 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.

Abstract: The invention provides catalysts that are not corroded in acidic electrolytes or at high potential and have excellent durability and high oxygen reducing ability, and processes for producing the catalysts and uses of the catalysts. The catalyst of the invention includes a metal oxycarbonitride that contains at least one metal selected from tantalum, vanadium, molybdenum and zirconium (hereinafter, also referred to as “metal M” or simply “M”) and does not contain any of platinum, titanium and niobium.

Abstract: 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.

Abstract: The membrane electrode assembly 100 has an electrolyte layer 10, a catalyst layer 20, and a member 15 impregnated with electrolyte which is arranged between the electrolyte layer 10 and the catalyst layer 20. At least part of the peripheral edge portion of the member 15 extends the outside the peripheral edge portions of the electrolyte layer and the catalyst layer 20. With this kind of constitution, it is possible to easily separate the electrolyte layer 10 or the catalyst layer 20 from the member 15 from the extended portion of the member 15. Consequently, it is possible to easily replace the electrolyte layer 10 and the catalyst layer 20.

Abstract: A structure of a cathode electrode for a fuel cell includes a catalyst layer formed by mixing a carbon material with a catalyst material and a hydrophilic ion conductive material. The hydrophilic ion conductive material is embedded on the catalyst layer and contacts an electrolyte membrane and a diffusion layer to provide a migration path for water and hydrogen ions.

Abstract: According to the present invention, a porous material for a fuel cell electrolyte membrane, wherein at least one strength auxiliary layer is provided inside and/or on the surface of a high porosity layer, the high porosity layer and the strength auxiliary layer constitute a multilayer structure, and the average diameter of pores of the high porosity layer is different from the average diameter of pores of the strength auxiliary layer, is provided. Also, a porous material having high porosity and high strength, which is suitable as a base material for an electrolyte membrane of a solid polymer fuel cell, is provided and a high-performance fuel cell using such material is realized.

Abstract: A fuel cell electrolyte membrane (2) includes a first electrolyte membrane (5) formed from a basic polymer including a phosphoric acid, and second and third electrolyte membranes (6, 7) each formed from a basic polymer including a phosphoric acid and clamping the first electrolyte membrane (5) between the second and third electrolyte membranes (6, 7). The phosphoric acid contained in the first electrolyte membrane (5) is greater than the phosphoric acid contained in each of the second and third electrolyte membranes (6, 7) in concentration.

Abstract: Provided is a polymer electrolyte membrane including an inorganic nanoparticle bonded with a proton-conducting group, a solid acid and a proton-conducting polymer. The inorganic nanoparticle bonded with the proton-conducting group may be obtained by reacting a compound including a proton-conducting group with a metal precursor. The polymer electrolyte membrane has significantly enhanced proton conductivity and reduced methanol crossover.

Abstract: A gas diffusion substrate comprising a non-woven fibre web, thermally conductive materials and a carbonaceous residue, wherein the thermally conductive materials and carbonaceous residue are embedded within the non-woven fibre web and wherein the thermally conductive materials have a maximum dimension of between 1 and 100 ?m and the gas diffusion substrate has a porosity of less than 80% is disclosed. The substrate has particular use in phosphoric acid fuel cells.

Abstract: A polymer electrolyte fuel cell of the present invention comprises a membrane-electrode assembly (5), a first separator (6a), and a second separator (6b); the first separator (6a) having a groove-shaped first reaction gas channel (8) on one main surface of the first separator (6a) which contacts the first electrode (4a) such that a plurality of straight-line-shaped first rib portions (11) run along each other; the second electrode (4b) having a groove-shaped second reaction gas channel (9) on one main surface of the second electrode (4b) which contacts the second separator (6b) such that a plurality of straight-line-shaped second rib portions (12) run along each other; a ratio of a first reaction gas channel width of at least an upstream portion (18b) of the first reaction gas channel (8) with respect to a second rib portion (12) is greater than 0 and not greater than 1.

Abstract: The invention relates to a fuel cell (1) with a membrane electrode assembly (2). The membrane electrode assembly (2) is disposed between two bipolar plates (5, 6) and connected to a sealing element (3). The sealing element (3) and the bipolar plates (5, 6) contact each other with the formation of an abutment region (10). A sliding surface (11) is provided in the abutment region (1), by means of which the membrane electrode assembly (2) disposed between the two bipolar plates (5, 6) can be impacted with a shear stress (15) upon compression of the two bipolar plates (5, 6). The invention further relates to a fuel cell stack with such a fuel cell (1) and to a method for sealing a fuel cell (1).

Abstract: In solid polymer fuel cells employing framed membrane electrode assemblies, a conventional anode compliant seal is employed in combination with a cathode non-compliant seal to provide for a thinner fuel cell design, particularly in the context of a fuel cell stack. This approach is particularly suitable for fuel cells operating at low pressure.

Abstract: To provide a means of further improving the cell's start-up capability (below-freezing-point-start-up capability) in a low temperature environment in the gas diffusion layer used in the fuel cell. It is a gas diffusion layer for fuel cell having a pore volume of micropores of 2.0×10?4 cm3/cm2 or higher.

Abstract: A solid oxide fuel cell (SOFC) includes a cathode electrode, an anode electrode, and a solid oxide electrolyte located between the anode electrode and the cathode electrode. The cathode electrode is a porous ceramic layer infiltrated with a cathode catalyst material, and the anode electrode is a porous ceramic layer infiltrated with an anode catalyst material, and the electrolyte is a ceramic layer having a lower porosity than the anode and the cathode electrodes. A ceramic reinforcing region may be located adjacent to the riser opening in the electrolyte.

Abstract: In order to provide a membrane electrode assembly that can further improve power generation performances of a fuel cell, the present invention allows a rib portion (22) that separates mutually adjacent gas flow passages (21) from each other to have a porosity lower than the porosity of a lower area (23) of the rib portion. Thus, it is possible to suppress the deformation of the rib portion and excessive permeation of a reaction gas, and consequently to further improve the power generation performances.

Abstract: An apparatus to control a swelling of a catalyst coated membrane in a fuel cell includes an insulator layer provided at a perimeter of the fuel cell. The insulator layer has a plurality of insulator films and is secured to a flow field plate. The insulator layer has a less compressibility relative to a gasket used in the fuel cell. A method for controlling a swelling of a catalyst coated membrane in a fuel cell includes providing an insulator layer at a perimeter of each of fuel cells in a fuel cell stack. The fuel cell stack is compressed for a predetermined duration when the catalyst coated membrane is in a substantially dry state. Passage of fuel is allowed inside the fuel cell thereby facilitating the catalyst coated membrane to swell. A swollen catalyst coated membrane is allowed to contact the insulator layer.

Abstract: A diffusion medium layer for a fuel cell, including an electrically conductive microtruss structure disposed between a pair of electrically conductive grids is provided. At least one of the microtruss structure and the grids is formed from a radiation-sensitive material. A fuel cell having the diffusion medium layer and a method for fabricating the diffusion medium layer is also provided.

Abstract: A membrane electrode assembly, comprising at least one phosphoric acid-containing polymer electrolyte membrane and at least one gas diffusion electrode, said gas diffusion electrode comprising: i. at least one catalyst layer and ii. at least one gas diffusion medium having at least two gas diffusion layers, the first gas diffusion layer comprising an electrically conductive macroporous layer in which the pores have a mean pore diameter in the range from 10 ?m to 30 ?m, the second gas diffusion layer comprising an electrically conductive macroporous layer in which the pores have a mean pore diameter in the range from 10 ?m to 30 ?m, the gas diffusion medium comprising polytetrafluoroethylene, the first gas diffusion layer having a higher polytetrafluoroethylene concentration than the second gas diffusion layer.

Abstract: A fuel cell is disclosed that includes an electrode assembly arranged between a cathode and an anode. The anode and cathode have lateral surfaces adjoining lateral surface of the electrode assembly and respectively include fuel and oxidant flow fields. Interfacial seals are not arranged between the lateral surfaces. Instead, a sealant is applied to the anode, the cathode and the electrode assembly to fluidly separate the fuel and oxidant flow fields. In one example, the adjoining lateral surfaces are in abutting engagement with one another. The sealant is applied in a liquid, uncured state to perimeter surfaces of the electrode assembly, the anode and the cathode that surround the lateral surfaces.

Abstract: A fuel cell comprising: a membrane electrolyte assembly having a polymer electrolyte membrane and a pair of catalyst electrodes, namely an air electrode and a fuel electrode sandwiching the polymer electrolyte membrane; a pair of separators, namely an air electrode separator and a fuel electrode separator sandwiching the membrane electrolyte assembly; two or more oxidizing gas channels running in a certain direction for the purpose of supplying an oxidizing gas to the air electrode; and two or more linear fuel gas channels arranged parallel to the certain direction for the purpose of supplying a fuel gas to the fuel electrode. Large gaps and small gaps are provided alternately between adjacent two oxidizing gas channels along the certain direction, and the fuel gas channels do not overlap portions of the oxidizing gas channels, that are parallel to the fuel gas channels.

Abstract: The present invention relates to a poly(arylene ether) copolymer having an ion exchange group, particularly a positive ion exchange group, a method for manufacturing the same, and use thereof. In the poly(arylene ether) copolymer having the ion exchange group according to the present invention, physical characteristics, ion exchanging ability, metal ion adsorption ability and a processability are excellent, and thus the copolymer can be molded in various shapes and can be extensively applied to various fields such as recovering of organic metal, air purification, catalysts, water treatment, medical fields and separating of proteins.

Abstract: A method for producing an electrode-membrane-frame assembly according to the present invention includes arranging a previously molded first molded body on a circumferential region of first catalyst layer close to first gas diffusion layer, arranging a previously molded second molded body on a circumferential region of second catalyst layer close to second gas diffusion layer, and forming a third molded body by injection molding so as to integrally connect the first molded body and the second molded body and not to be directly in contact with an inner side region of second main surface of a polymer electrolyte membrane positioned on an inner side of an outer edge part of the second molded body when viewed from a thickness direction of the polymer electrolyte membrane, whereby a frame having the first, second, and the third molded body is formed. Thus, the polymer electrolyte membrane can be prevented from deteriorating.