Patent application number | Description | Published |
20120088181 | Chemical Durability Using Synergystic Mitigation Strategies - A fuel cell includes an ion conducting membrane having a first side and a second side. Characteristically, the ion conducting membrane has a sufficient amount of a stabilization agent and platinum to inhibit the loss of fluoride from the ion conducting membrane when compared to an ion conducting membrane having the same construction except for the presence of cerium ions. | 04-12-2012 |
20120122016 | Fuel Cell Durability Through Oxide Supported Precious Metals in Membrane - A fuel cell includes an anode, a cathode, and an ion conducting membrane interposed between the anode and cathode. The ion conducting membrane includes a base layer that has an ion conducting polymer and additive layer that has a metal supported on an oxide support, the oxide support scavenging hydroxyl radicals formed during fuel cell operation. | 05-17-2012 |
20120135332 | FUEL CELLS HAVING IMPROVED DURABILITY - A fuel cell or a fuel cell stack component comprises an active area and a non-active area. A peroxide decomposing metal compound or metal alloy is disposed in or on the non-active area of a fuel cell or a fuel cell component. The metal compound or alloy is capable of providing a peroxide decomposing metal species that can migrate from the non-active area to an active area of a fuel cell. A fuel cell or membrane electrode assembly having a peroxide decomposing metal compound or alloy disposed in its non-active area exhibits improved durability. | 05-31-2012 |
20120244452 | DIRECT CATALYST COATING ON FREE STANDING MICROPOROUS LAYER - Methods of making reinforced membrane electrode assemblies are described. Catalyst coated free standing microporous layers and reinforced membrane electrode assemblies are also described. | 09-27-2012 |
20130022895 | Membrane with Laminated Structure and Orientation Controlled Nanofiber Reinforcement Additives for Fuel Cells - An ion-conducting membrane for fuel cell applications a first layer including a first ion-conducting polymer and nanofibers dispersed therein. The first layer includes a first side and a second side. A second layer is disposed over the first side of the first layer and includes a second ion-conducting polymer without nanofibers. | 01-24-2013 |
20130130133 | Nanofiber Supported Catalysts As Membrane Additives For Improved Fuel Cell Durability - A fuel cell membrane and a method of making the same. The membrane includes at least one non-reinforced layer and at least one reinforced layer. Both layers include a proton-conductive ionomer, while the reinforced layer additionally includes nanofiber-supported catalyst that improve mechanical and chemical durability of the membrane. The nanofiber-supported catalyst is made up of structural fibers onto which an electrocatalyst is coated, deposited or otherwise formed. The structural nanofibers give increased strength and stiffness to the layers that include them, while the electrocatalyst helps to resist electrochemical degradation to the membranes that include them. Such a membrane may form the basis of a fuel cell's membrane electrode assembly. | 05-23-2013 |
20130157167 | ALTERNATE MATERIAL FOR ELECTRODE TOPCOAT - A reduced gas crossover fuel cell membrane and method of making. The fuel cell member includes an electrode layer with a catalyst and an electrochemically-active first ionomer and an overcoat layer disposed on the electrode layer. The overcoat layer is made of the same or different second ionomer relative to the first ionomer of the electrode layer with at least one reduced gas crossover characteristic. | 06-20-2013 |
20130236810 | Fuel Cell Durability By Orthogonally Oriented Anisotropic External Reinforce Layers - A fuel cell includes a proton exchange membrane having a first major side and a second major side. The membrane electrode assembly includes a first anisotropic reinforced layer having a first plurality of fiber preferentially oriented along a first direction, a second anisotropic reinforced layer having a second plurality of fiber preferentially oriented along a second direction, and a polymeric layer including a plurality of sulfonic acid groups. A cathode catalyst layer is disposed over the first major side of the proton exchange membrane while an anode catalyst layer is disposed over the second major side of the proton exchange membrane. An anode flow field plate is disposed over the anode catalyst layer and a cathode flow field plate is disposed over the cathode catalyst layer. | 09-12-2013 |
20140120458 | Direct Coated Membrane Electrode Assembly On External Reinforcement For Fuel Cells - Disclosed are methods for fabricating a reinforced membrane electrode assembly having one or more freestanding external reinforcement layers. The method comprises providing a freestanding external reinforcement layer, and depositing a catalyst solution and membrane solution onto at least a portion of the freestanding external reinforcement layer. | 05-01-2014 |