Patent application number | Description | Published |
20100183940 | FUEL CELL STACK - Provided is a fuel cell stack including stacked unit cells. Each unit cell includes a membrane-electrode assembly and a porous support. | 07-22-2010 |
20100266918 | FUEL CELL STACK AND FUEL CELL SYSTEM WITH PLURALITY OF GENERATION MODULES - A fuel cell has a structure in which generation modules are stacked. In each of the generation modules, there are cells are stacked. Each of the cells generates unitary power from fuel energy. A fuel cell system including the fuel stack operates either all or some of the generation modules in consideration of the quantity of power consumed by a load. | 10-21-2010 |
20110151344 | METHOD OF CONTROLLING FUEL CELL SYSTEM - A method of controlling a fuel cell system, the method involving: controlling the power output of the fuel cell system and an amount of a fuel that is supplied to the fuel cell system, so as to increase a fuel utilization rate of a fuel cell, according to variations of the power output of the fuel cell system. | 06-23-2011 |
20110217627 | COMPOSITION, METHOD OF PREPARING THE COMPOSITION, ELECTRODE INCLUDING THE COMPOSITION, AND FUEL CELL INCLUDING THE ELECTRODE - A composition containing a uniformly dispersed polyoxazine-based compound, a method of preparing the composition, an electrode including the composition, and a fuel cell including the electrode. | 09-08-2011 |
20110223522 | BIPOLAR PLATE FOR FUEL CELL, METHOD OF MANUFACTURING THE BIPOLAR PLATE, AND FUEL CELL INCLUDING THE BIPOLAR PLATE - A bipolar plate for a fuel cell includes a metal plate and a coating layer disposed on a surface of the metal plate. The coating layer includes a polymer of an oxazine-based compound, particularly, a benzoxazine-based compound and a conducting material. A method of manufacturing the bipolar plate includes coating a surface of a metal plate with a coating layer forming composition including at least one oxazine-based compound, a conducting material, and a solvent; and thermally treating the metal plate coated with the coating layer forming composition. A fuel cell includes the bipolar plate. | 09-15-2011 |
20110294043 | ELECTRODE FOR FUEL CELL AND FUEL CELL EMPLOYING THE SAME - Electrodes for fuel cells including a quadrivalent metal element, a monovalent metal element or a divalent metal element, and phosphates, as well as fuel cells including the electrodes. | 12-01-2011 |
20120028156 | STACK HAVING UNIFORM TEMPERATURE DISTRIBUTION AND METHOD OF OPERATING THE SAME - A stack and a method of operating the stack. A method of operating a stack having a plurality of cells and a plurality of cooling plates includes: supplying a working fluid to a first group of the cooling plates; and re-supplying the working fluid passed through the first group of the cooling plates to a second group of the cooling plates, wherein the first and second groups are divided according to an operating temperature in the stack. | 02-02-2012 |
20120171592 | UNIT CELL OF FUEL CELL STACK AND FUEL CELL STACK HAVING THE UNIT CELL - A unit cell of a fuel cell stack, and a fuel cell stack including the unit cell, where the unit cell includes channel plates including first and second manifolds, a plurality of channels and channel connecting units; hard plates arranged to contact surfaces of the channel connecting units; and gaskets arranged to surround the plurality of channels and first and second manifolds between the channel plates and the hard plates. | 07-05-2012 |
20120231365 | METHOD FOR MECHANICALLY STABILIZING NITROGEN-CONTAINING POLYMERS - A method for the production of mechanically stabilized polyazole polymers, comprising the following steps: a) providing a membrane comprising i.) polyazoles with at least one amino group in a repeating unit except the ones obtainable by reacting aromatic and/or heteroaromatic diaminocarboxylic acids, ii.) at least one strong acid and iii.) at least one stabilizing reagent, the total content of stabilizing reagents in the membrane being within the range of from 0.01 to 30% by weight, b) performing the stabilization reaction in the membrane, immediately or in a subsequent processing step of the membrane, c) if appropriate, additionally doping the membrane obtained in accordance with step b) with a strong acid or concentrating the present strong acid further by removal of present water, wherein the stabilizing agent comprises at least one oxazine-based compound. The polyazole polymer membranes thus obtainable are in particular characterized by a high conductivity and a very good mechanical stability. Therefore, they are in particular suited for applications in fuel cells. | 09-13-2012 |
20130236800 | METHOD OF ACTIVATING FUEL CELL - A method of activating a fuel cell includes: supplying a fuel to an anode of the fuel cell; supplying a gas mixture to a cathode of the fuel cell; applying a second load, which is equal to or less than a predetermined first load, to a stack of the fuel cell after supplying the gas mixture to the cathode; discontinuing the supply of the gas mixture; resupplying the gas mixture to the cathode when a voltage of the stack of the fuel cell is a predetermined voltage or less after discontinuing the supply of the gas mixture; and applying a third load, which is higher than the predetermined first load, to the stack of the fuel cell, where the supply of the fuel to the anode of the fuel cell is maintained. | 09-12-2013 |
20130266885 | FUEL CELL STACK AND FUEL CELL COMPRISING THE SAME - A fuel cell stack includes a membrane electrode assembly, plates on the membrane electrode assembly, and gaskets between the plates, where the membrane electrode assembly includes an electrolyte membrane-electrode including an electrolyte membrane between first and second electrodes thereof, and gas diffusion layers in contact with the first and second electrodes, where the gaskets are in contact with the plates and surround the membrane electrode assembly, where a ratio of change in compressibility of the gaskets is in a range from 0.5 times to 1.5 times a ratio of change in compressibility of the gas diffusion layers at a same compressibility, where a compressibility is a ratio of a reduced thickness to an initial thickness, and where the ratio of change in compressibility is defined by Equation 1 below: Ratio of change in compressibility=ΔP/Δt, where ΔP denotes a pressure change, and Δt denotes a thickness change. | 10-10-2013 |
20140099563 | FUEL CELL STACK HAVING COOLING MEDIUM LEAKAGE PREVENTING UNIT - A fuel cell stack includes a plurality of unit cells, a cooling plate and a block plate. Each unit cell includes a cathode electrode and an anode electrode respectively at opposing sides of an electrolyte membrane, and a separator facing each of the cathode electrode and the anode electrode. The cooling plate is between adjacent unit cells a cooling medium flows in the cooling plate. The block plate is between the cooling plate and an adjacent unit cell of the adjacent unit cells. The block plate blocks the cooling medium flowing in the cooling plate from contacting the adjacent unit cell of the adjacent unit cells. | 04-10-2014 |