Patent application number | Description | Published |
20080233447 | Fuel Cell and Fuel Cell Stack Comprising the Same - Even when a reaction gas flows into a gap formed between a gasket and a membrane electrode assembly, the flowing of the reaction gas to the outside without flowing through an electrode is prevented and thus a decrease in power generation efficiency is prevented. In order to allow the water vapor contained in the reaction gas that flows into an anode-side gap | 09-25-2008 |
20080274387 | Method for Producing Gas Diffusion Electrode and Method for Producing Polymer Electrolyte Fuel Cell, and Gas Diffusion Electrode and Polymer Electrolyte Fuel Cell - The present invention provides a gas diffusion electrode capable of sufficiently preventing not only degradation of MEA during storage but also degradation of initial characteristics and durability during the time period from production to initial use, and a polymer electrolyte fuel cell including the gas diffusion electrode. The gas diffusion electrode includes a catalyst layer in which A | 11-06-2008 |
20080318103 | Fuel Cell System - Provided is a fuel cell system including a polymer electrolyte fuel cell with improved durability, which is capable of suppressing a phenomenon in which a polymer electrolyte membrane is decomposed and degraded. In the fuel cell system including the polymer electrolyte fuel cell including: a membrane electrode assembly including a polymer electrolyte membrane with hydrogen ion conductivity, and a fuel electrode and an oxidant electrode sandwiching the polymer electrolyte membrane; a first separator plate for supplying and discharging a fuel gas to and from the fuel electrode; and a second separator plate for supplying and discharging an oxidant gas to and from the fuel electrode, a metal ion supplying means for supplying metal ions, which are stable in an aqueous solution, to the inside of the membrane electrode assembly in an amount equivalent to 1.0 to 40.0% of the ion exchange group capacity of the polymer electrolyte membrane is disposed. | 12-25-2008 |
20090011322 | Catalyst-Coated Membrane, Membrane-Electrode Assembly and Polymer Electrolyte Fuel Cell - A catalyst-coated membrane includes: a first catalyst layer ( | 01-08-2009 |
20090123788 | FUEL CELL SYSTEM AND OPERATION METHOD THEREOF - The present invention includes a fuel cell ( | 05-14-2009 |
20090202882 | POLYMER ELECTROLYTE FUEL CELL AND FUEL CELL SYSTEM INCLUDING THE SAME - A polymer electrolyte fuel cell includes a cell stack ( | 08-13-2009 |
20100062304 | MEMBRANE MEMBRANE-REINFORCEMENT-MEMBER ASSEMBLY, MEMBRANE CATALYST-LAYER ASSEMBLY, MEMBRANE ELECTRODE ASSEMBLY AND POLYMER ELECTROLYTE FUEL CELL - 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 ( | 03-11-2010 |
20100068588 | MEMBRANE-MEMBRANE REINFORCING MEMBRANE ASSEMBLY, MEMBRANE-CATALYST LAYER ASSEMBLY, MEMBRANE-ELECTRODE ASSEMBLY, AND POLYMER ELECTROLYTE FUEL CELL - A membrane-membrane reinforcing member assembly includes: a polymer electrolyte membrane ( | 03-18-2010 |
20100075187 | MEMBRANE-MEMBRANE REINFORCING MEMBER ASSEMBLY, MEMBRANE-CATALYST LAYER ASSEMBLY, MEMBRANE-ELECTRODE ASSEMBLY, AND POLYMER ELECTROLYTE FUEL CELL - A membrane-membrane reinforcing member assembly includes: a polymer electrolyte membrane ( | 03-25-2010 |
20100086819 | POLYMER ELECTROLYTE FUEL CELL AND FUEL CELL STACK INCLUDING THE SAME - A polymer electrolyte fuel cell includes: a membrane-electrode assembly ( | 04-08-2010 |
20100104908 | FUEL CELL SYSTEM AND OPERATING METHOD THEREOF - In order to provide a fuel cell system (which ensures high proton conductivity and high energy conversion efficiency and, in addition, copes with an operating mode of the startup/shutdown type and which has excellent durability capable of effectively preventing a polymer electrolyte membrane from deterioration) and an operating method of such a fuel cell system, a fuel cell system ( | 04-29-2010 |
20100104913 | MEMBRANE-MEMBRANE REINFORCING MEMBER ASSEMBLY, MEMBRANE-CATALYST LAYER ASSEMBLY, MEMBRANE-ELECTRODE ASSEMBLY, POLYMER ELECTROLYTE FUEL CELL, AND METHOD FOR MANUFACTURING MEMBRANE-ELECTRODE ASSEMBLY - A membrane-membrane reinforcing member assembly includes: a polymer electrolyte membrane ( | 04-29-2010 |
20100104923 | FUEL CELL SEPARATOR AND FUEL CELL COMPRISING THE SAME - The invention provides a fuel cell separator wherein a first reaction gas channel | 04-29-2010 |
20100167146 | FUEL CELL SYSTEM AND METHOD OF OPERATING FUEL CELL SYSTEM - Provided is a fuel cell system which is capable of well preventing deterioration of performance of a fuel cell stack or well restoring deteriorated performance of the fuel cell stack and of suppressing deterioration of durability of the fuel cell stack, and a method of operating the fuel cell system. In a fuel cell system of the present invention including a fuel cell stack | 07-01-2010 |
20100173220 | POLYMER ELECTROLYTE FUEL CELL - A polymer electrolyte fuel cell of the present invention comprises an electrolyte layer-electrode assembly ( | 07-08-2010 |
20100209801 | FUEL CELL AND FUEL CELL STACK COMPRISING THE SAME - A fuel cell of the present disclosure includes an electrolyte-layer-electrode assembly, a first separator, a second separator, and one or more gas permeation suppressing sections, the inner surface of the first separator and the inner surface of the second separator have a first region and a second region, the gas permeation suppressing section is provided at least one of a first reactant gas channel and a second reactant gas channel so as to overlap with the first region when viewed in a thickness direction of the first separator, and the gas permeation suppressing section is provided at least one of the first reactant gas channel and the second reactant gas channel so as to overlap with the second region when viewed in the thickness direction of the first separator. | 08-19-2010 |
20100209807 | FUEL CELL, MEMBRANE-ELECTRODE ASSEMBLY, AND MEMBRANE-CATALYST LAYER ASSEMBLY - A fuel cell of the present invention includes a membrane-electrode assembly ( | 08-19-2010 |
20100221620 | FUEL CELL SYSTEM AND OPERATION METHOD THEREOF - A fuel cell system ( | 09-02-2010 |
20100227257 | FUEL CELL SEPARATOR AND FUEL CELL INCLUDING SAME - A separator for use in a fuel cell of the present disclosure includes: a plate; a first gas manifold hole ( | 09-09-2010 |
20100233554 | FUEL CELL SYSTEM AND OPERATING METHOD THEREOF - A fuel cell system of the present invention includes: a polymer electrolyte fuel cell ( | 09-16-2010 |
20100248087 | METHOD FOR PRODUCING AN ELECTRODE-MEMBRANE-FRAME ASSEMBLY - In the method of the invention for producing an electrode-membrane-frame assembly, its principal part is formed by laying a first catalyst layer onto one of surfaces of an electrolyte membrane, arranging a first gas diffusion layer onto the surface of the first catalyst layer and inside the circumferential region of the electrolyte membrane, laying a second catalyst layer onto the other surface of the electrolyte membrane, and arranging a second gas diffusion layer onto the surface of the second catalyst layer and inside the circumferential region of the electrolyte membrane so as to make the position of the outer circumference of the second gas diffusion layer different from that of the outer circumference of the first gas diffusion layer. Then, in the state that an outer circumferential portion of either the first gas diffusion layer or the second gas diffusion layer, the portion being positioned outside a region of the first and second gas diffusion layers wherein the two layers are opposed to each other, is opposed to a portion of a flat region located inside the frame of a frame-form primary molded body, the circumferential region of the principal part is arranged on the flat region, and subsequently a secondary molded body is formed to cover the circumferential region of the electrolyte membrane with the second molded body together with the primary molded body, in order to prevent the polymer electrolyte membrane from being broken or deformed. | 09-30-2010 |
20100273077 | FUEL CELL, FUEL CELL SYSTEM, AND METHOD FOR OPERATING FUEL CELL - A fuel cell of the present invention includes cell blocks ( | 10-28-2010 |
20100316916 | POLYMER ELECTROLYTE FUEL CELL SYSTEM - A polymer electrolyte fuel cell system of the present invention comprises cells | 12-16-2010 |
20110027681 | PRESERVATION ASSEMBLY OF POLYMER ELECTROLYTE FUEL CELL STACK - A preservation assembly of a polymer electrolyte fuel cell stack is provided. The assembly includes an uninstalled polymer electrolyte fuel cell stack and sealing units. The uninstalled polymer electrolyte fuel cell stack is provided with an oxidizing agent passage having an inlet and an outlet and extending through a cathode and a reducing agent passage having an inlet and an outlet and extending through an anode. The sealing units include sealing plugs or containers and are configured to seal the inlet and the outlet of the oxidizing agent passage within which an oxygen concentration has been decreased and to seal the inlet and the outlet of the reducing agent passage within which the oxygen concentration has been decreased. The uninstalled polymer electrolyte fuel cell stack is in a state before an assembled polymer electrolyte fuel cell stack is incorporated into a fuel cell system. | 02-03-2011 |
20110033768 | FUEL CELL SEPARATOR AND FUEL CELL COMPRISING FUEL CELL SEPARATOR - A fuel cell separator of the present invention is a plate-shaped fuel cell separator including a reaction gas supply manifold hole | 02-10-2011 |
20110033775 | FUEL CELL SEPARATOR AND FUEL CELL COMPRISING FUEL CELL SEPARATOR - A fuel cell separator of the present invention is a plate-shaped fuel cell separator including a reaction gas supply manifold hole ( | 02-10-2011 |
20110076592 | MEMBRANE-ELECTRODE-ASSEMBLY AND FUEL CELL - The membrane-electrode-assembly of the present invention has a polymer electrolyte membrane, a pair of catalyst layers opposed to each other to interpose the polymer electrolyte membrane therebetween, and an anode gas diffusion layer and a cathode gas diffusion layer opposed to each other to interpose the polymer electrolyte membrane and the paired catalyst layers therebetween, wherein a porosity of the anode gas diffusion layer is 60% or less, a porosity of the cathode gas diffusion layer is larger than that of the anode gas diffusion layer, and the anode gas diffusion layer is made of a porous member mainly including conductive particles and a polymeric resin. In this manner, the power generating performance is further improved. | 03-31-2011 |
20110165493 | POLYMER ELECTROLYTE FUEL CELL AND FUEL CELL STACK COMPRISING THE SAME - A polymer electrolyte fuel cell of the present invention includes a membrane electrode assembly ( | 07-07-2011 |
20110207009 | METHOD OF PRESERVING POLYMER ELECTROLYTE FUEL CELL STACK AND PRESERVATION ASSEMBLY OF POLYMER ELECTROLYTE FUEL CELL STACK - Provided is a method of preserving a PEFC stack, which is capable of controlling degradation of performance of the PEFC stack during a time period that elapses from when the stack is placed in an uninstalled state until it is placed in an installation position and is practically used. Provided is a preservation assembly of the PEFC stack which is capable of sufficiently inhibiting degradation of performance of the PEFC stack particularly during a time period that elapses from when the stack is placed in the uninstalled state until it is placed in the installation position and is practically used. A method of preserving a PEFC stack that is provided with an oxidizing agent passage ( | 08-25-2011 |
20110207025 | GAS DIFFUSION LAYER FOR FUEL CELL, MANUFACTURING METHOD THEREFOR, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL - 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. | 08-25-2011 |
20110244358 | GAS DIFFUSION LAYER AND PROCESS FOR PRODUCTION THEREOF, AND FUEL CELL - An object of the present invention is to provide a gas diffusion layer having gas flow passages formed at its one main surface, which is capable of achieving a further improvement in power generation performance. The fuel cell-use gas diffusion layer ( | 10-06-2011 |
20110269035 | FUEL CELL SYSTEM AND OPERATING METHOD THEREOF - The present invention includes a fuel cell ( | 11-03-2011 |
20110281191 | POLYMER ELECTROLYTE FUEL CELL, FUEL CELL STACK INCLUDING THE SAME, FUEL CELL SYSTEM, AND METHOD FOR OPERATING FUEL CELL SYSTEM - A polymer electrolyte fuel cell of the present invention includes: a membrane-electrode assembly ( | 11-17-2011 |
20110311898 | ELECTRODE-MEMBRANE-FRAME ASSEMBLY, METHOD FOR PRODUCING THE SAME, AND FUEL CELL - 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. | 12-22-2011 |
20120003572 | MANUFACTURING METHOD AND MANUFACTURING APPARATUS FOR CATALYST-COATED MEMBRANE ASSEMBLY - In order to further suppress the occurrence of wrinkles and pinholes in a polymer electrolyte membrane, a manufacturing method for a catalyst-coated membrane assembly according to the present invention includes a preliminary drying process in which a catalyst ink coated onto one surface of the polymer electrolyte membrane is preliminary dried by heating the polymer electrolyte membrane from the side of the other surface so that swelling of the polymer electrolyte membrane is returned to its original state, and a main drying process which is carried out after the preliminary drying process by heating the polymer electrolyte membrane from the side of the one surface. | 01-05-2012 |
20120021329 | MEMBRANE ELECTRODE ASSEMBLY AND METHOD OF MANUFACTURING THE SAME, AS WELL AS FUEL CELL - 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 ( | 01-26-2012 |
20120040268 | POLYMER ELECTROLYTE FUEL CELL AND FUEL CELL STACK COMPRISING THE SAME - A polymer electrolyte fuel cell of the present invention comprises a membrane-electrode assembly ( | 02-16-2012 |
20120164553 | GAS DIFFUSION LAYER FOR FUEL CELL, MANUFACTURING METHOD THEREOF, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL - 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. | 06-28-2012 |
20120214080 | METHOD OF PRESERVING POLYMER ELECTROLYTE FUEL CELL STACK AND PRESERVATION ASSEMBLY OF POLYMER ELECTROLYTE FUEL CELL STACK - A preservation assembly of a PEFC stack which is capable of sufficiently inhibiting degradation of performance of the PEFC stack particularly during a time period that elapses from when the stack is placed in the uninstalled state until it is placed in the installation position and is practically used. The PEFC stack is provided with an oxidizing agent passage having an inlet and an outlet and extending through a cathode and a reducing agent passage having an inlet and an outlet and extending through an anode. The PEFC stack is preserved in an uninstalled state in such a manner that an interior of the oxidizing agent passage and an interior of the reducing agent passage are set in a pressure-reduced state. | 08-23-2012 |
20120258380 | POLYMER ELECTROLYTE FUEL CELL - A polymer electrolyte fuel cell of the present invention includes a membrane-electrode assembly ( | 10-11-2012 |
20120288783 | MEMBRANE ELECTRODE ASSEMBLY WITH INTEGRATED FRAME AND FUEL CELL - Disclosed is a membrane electrode assembly provided with a polymer electrolyte membrane; a catalyst layer (A) which is laminated onto one surface of the polymer electrolyte membrane; a gas diffusion layer (A) which is laminated onto the catalyst layer (A); a catalyst layer (B); and a gas diffusion layer (B). The outer circumferential section of the catalyst layer (A) is the membrane electrode assembly with an integrated frame which comprises a membrane electrode assembly that protrudes from the gas diffusion layer (A) and a frame adhered to the outer circumferential section of the catalyst layer (A), whereby said frame surrounds the edge of the membrane electrode assembly. The surface that is adhered to the frame in the outer circumferential section of the catalyst layer (A) comprises a plurality of cracks. | 11-15-2012 |
20120315571 | METHOD FOR PRODUCING CATALYST-COATED MEMBRANE - According to a method for producing a catalyst-coated membrane in the present invention, in order to prevent a polymer electrolyte membrane | 12-13-2012 |
20130101917 | POLYMER ELECTROLYTE FUEL CELL AND METHOD OF FABRICATING THE SAME - A polymer electrolyte fuel cell includes: a sealing structure ( | 04-25-2013 |
20130157164 | FUEL CELL - A close attachment region is provided on the outer side relative to an outer edge portion of a gas diffusion layer and on the inner side relative to the inner edge portion of a gasket as seen from the thickness direction of a polymer electrolyte membrane, such that separators and a frame member are closely attached to each other. Thus, it becomes possible to suppress an increase in the manufacturing cost and a reduction in the power generation performance, which is attributed to the impurity eluted from the gasket and flowing toward the gas diffusion layer. | 06-20-2013 |
20130164640 | OPERATION METHOD OF POLYMER ELECTROLYTE FUEL CELL SYSTEM AND POLYMER ELECTROLYTE FUEL CELL SYSTEM - An operation method of a polymer electrolyte fuel cell system including an anode ( | 06-27-2013 |
20140120452 | FUEL CELL AND MANUFACTURING METHOD THEREOF - A fuel cell of the present invention is configured so that seal members are brought into contact with a frame member, and at least one of the seal member and an outer circumferential portion of the gas diffusion layer is squashed by the other in the thickness direction of a polymer electrolyte membrane, to eliminate a clearance between the gas diffusion layer and the seal member. In this manner, the power generation performance is further enhanced. | 05-01-2014 |
20140193737 | MEMBRANE-ELECTRODE ASSEMBLY, FUEL CELL STACK, FUEL CELL SYSTEM AND OPERATION METHOD THEREOF - A membrane-electrode assembly includes: a polymer electrolyte membrane; catalyst layers disposed on the polymer electrolyte membrane; and gas diffusion layers respectively disposed on the catalyst layers. Each of the gas diffusion layers is constituted by a porous member containing electrically-conductive particles and polymer resin as major components, and a ratio (y/x) of a tensile strength y (N/cm) of the gas diffusion layer to a dry-wet size change rate x (%) of the polymer electrolyte membrane is 0.10 or higher. | 07-10-2014 |
20140329167 | FUEL CELL GAS DIFFUSION LAYER AND METHOD OF MANUFACTURING SAME - A fuel cell gas diffusion layer includes a porous member containing electrically-conductive particles and polymeric resin as major components, and a plurality of holes extending from a main surface of the fuel cell gas diffusion layer are formed. | 11-06-2014 |