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1. 发明申请

US20050136308A1 Reduced degradation of ion-exchange membranes in electrochemical fuel cells 有权
标题翻译：电化学燃料电池中离子交换膜的降解降低
公开(公告)号：US20050136308A1
公开(公告)日：2005-06-23
申请号：US10738962
申请日：2003-12-17
申请人： Neil Andrews , Shanna Knights , Kenneth Murray , Scott McDermid , Sean MacKinnon , Siyu Ye
发明人： Neil Andrews , Shanna Knights , Kenneth Murray , Scott McDermid , Sean MacKinnon , Siyu Ye
IPC分类号： H01M4/86 , H01M4/88 , H01M4/90 , H01M8/10 , C08J5/22 , H01M4/94
CPC分类号： H01M8/1004 , H01M4/8605 , H01M4/8663 , H01M4/90 , H01M8/1023 , H01M8/1039 , H01M8/1051 , H01M8/1053 , H01M8/1072 , Y02P70/56
摘要： A significant problem in PEM fuel cell durability is in premature failure of the ion-exchange membrane and in particular by the degradation of the ion-exchange membrane by reactive hydrogen peroxide species. Such degradation can be reduced or eliminated by the presence of an additive in the anode, cathode or ion-exchange membrane. The additive may be a radical scavenger, a membrane cross-linker, a hydrogen peroxide decomposition catalyst and/or a hydrogen peroxide stabilizer. The presence of the additive in the membrane electrode assembly (MEA) may however result in reduced performance of the PEM fuel cell. Accordingly, it may be desirable to restrict the location of the additive to locations of increased susceptibility to membrane degradation such as the inlet and/or outlet regions of the MEA.
摘要翻译： PEM燃料电池耐久性的一个重大问题是离子交换膜的过早失效，特别是通过活性过氧化氢物质降解离子交换膜。通过在阳极，阴极或离子交换膜中存在添加剂可以降低或消除这种降解。添加剂可以是自由基清除剂，膜交联剂，过氧化氢分解催化剂和/或过氧化氢稳定剂。然而，添加剂在膜电极组件（MEA）中的存在可能导致PEM燃料电池的性能降低。因此，可能需要将添加剂的位置限制在对膜降解的易感性增加的位置，例如MEA的入口和/或出口区域。

2. 发明授权

US06461751B1 Method and apparatus for operating a fuel cell 失效
标题翻译：用于操作燃料电池的方法和装置
公开(公告)号：US06461751B1
公开(公告)日：2002-10-08
申请号：US09455033
申请日：1999-12-06
申请人： Gustav Boehm , David P. Wilkinson , Shanna Knights , Reinhold Schamm , Nicholas J. Fletcher
发明人： Gustav Boehm , David P. Wilkinson , Shanna Knights , Reinhold Schamm , Nicholas J. Fletcher
IPC分类号： H01M804
CPC分类号： H01M8/04089
摘要： The present invention relates to improving the overall efficiency of a fuel cell system by reducing parasitic power consumption. A controller is programmed to decrease oxidant stoichiometry until oxidant starvation is detected or until oxidant stoichiometry is about one. When oxidant starvation is detected, the oxidant stoichiometry is increased until oxidant starvation is no longer detected. The fuel cell system employs a sensor for detecting an operational characteristic such as voltage output, or oxygen or hydrogen concentration in the cathode exhaust stream. The controller uses the operational characteristic to calculate oxidant stoichiometry or to determine when there is oxidant starvation at the cathode.
摘要翻译：本发明涉及通过降低寄生电力消耗来提高燃料电池系统的整体效率。控制器被编程为减少氧化剂化学计量，直到氧化剂缺乏被检测到或直到氧化剂化学计量约为1。当检测到氧化剂饥饿时，氧化剂化学计量增加，直到不再检测到氧化剂饥饿。燃料电池系统使用用于检测阴极排气流中的电压输出或氧气或氢气浓度的操作特性的传感器。控制器使用操作特性来计算氧化剂化学计量或确定何时在阴极处存在氧化剂缺乏。

3. 发明申请

US20060280993A1 Power plant with energy recovery from fuel storage 有权
公开(公告)号：US20060280993A1
公开(公告)日：2006-12-14
申请号：US11506562
申请日：2006-08-17
申请人： Bowie Keefer , Surajit Roy , Jean St.-Pierre , Amy Nelson , Shanna Knights
发明人： Bowie Keefer , Surajit Roy , Jean St.-Pierre , Amy Nelson , Shanna Knights
IPC分类号： H01M8/04 , F02G3/00
CPC分类号： F02B43/10 , F02G1/043 , F17C11/005 , H01M8/04007 , H01M8/04089 , H01M8/04119 , H01M8/0662 , Y02T10/16 , Y02T10/166 , Y02T10/32
摘要： Power plant systems and processes are described that enable recovery of at least a portion of the fuel storage energy associated with a storage system for supplying fuel to the power plant systems. A first embodiment of an energy-recovery power plant system includes at least one fuel storage container and at least one expander that can receive fuel from the fuel storage container at a first pressure and provide the fuel to the power plant at a second pressure that is lower than the first pressure. A second embodiment of an energy-recovery power plant system includes a first conduit fluidly coupling the fuel storage container and the power plant for delivering fuel from the fuel storage container to the power plant and at least one regenerative thermodynamic cycle engine thermally coupled to the first conduit such that heat may be exchanged between the fuel and a working fluid for the regenerative thermodynamic cycle engine.

4. 发明申请

US20060105211A1 Fuel cell system 审中-公开
标题翻译：燃料电池系统
公开(公告)号：US20060105211A1
公开(公告)日：2006-05-18
申请号：US10990340
申请日：2004-11-16
申请人： Myles Bos , Shanna Knights
发明人： Myles Bos , Shanna Knights
IPC分类号： H01M8/04 , H01M8/02
CPC分类号： H01M8/04201 , H01M8/04126 , H01M8/1007 , Y02P70/56
摘要： Membrane degradation in PEM fuel cells can be explained as follows. Hydrogen peroxide (H2O2) formed around cathodes and anodes catalytically reacts with Fenton's reagents to produce radicals. Such radicals attack the membrane and initiate oxidative decomposition. Only trace quantities of Fenton's reagent are necessary to lead to the production of radicals in-situ. Simply avoiding direct contact of Fenton's reagent elements with the MEA is therefore not sufficient to improve MEA lifetime. Components of a fuel cell system should also be made of materials that are essentially free of Fenton's reagents pursuant to the invention. One embodiment of the invention provides a fuel cell system, wherein the fuel cell stack and/or the supply apparatus and/or the discharge apparatus are/is made of materials that are essentially free of Iron (Fe).
摘要翻译： PEM燃料电池中的膜降解可以解释如下。阴极和阳极周围形成的过氧化氢（H 2 O 2 O 2）与芬顿试剂催化反应以产生自由基。这种自由基攻击膜并开始氧化分解。只有微量的芬顿试剂才能使原位生成自由基。因此，简单避免Fenton试剂元件与MEA的直接接触不足以改善MEA的使用寿命。燃料电池系统的组成部分也应由根据本发明基本上不含芬顿试剂的材料制成。本发明的一个实施方案提供了一种燃料电池系统，其中燃料电池堆和/或供应装置和/或排出装置由基本上不含铁（Fe）的材料制成。

5. 发明申请

US20050129988A1 Electrochemical fuel cell stack having a plurality of integrated voltage reversal protection diodes 失效
标题翻译：具有多个集成电压反向保护二极管的电化学燃料电池堆
公开(公告)号：US20050129988A1
公开(公告)日：2005-06-16
申请号：US10737540
申请日：2003-12-16
申请人： Shanna Knights , Jacob De Vaal , Michael Lauritzen , David Wilkinson
发明人： Shanna Knights , Jacob De Vaal , Michael Lauritzen , David Wilkinson
IPC分类号： H01M2/08 , H01M8/02 , H01M8/04 , H01M8/10 , H01M8/24
CPC分类号： H01M8/242 , H01M8/0263 , H01M8/0271 , H01M8/04552 , H01M8/04671 , H01M8/04955 , H01M8/241 , H01M8/2483
摘要： An electrochemical fuel cell stack comprises a plurality of fuel cell assemblies, wherein, each fuel cell assembly comprises a cell compressed between a pair of flow field plates, a perimeter seal circumscribing the cell and interposed between the pair of flow field plates, and a first diode, having an aspect ratio greater than 10:1, positioned adjacent to, and outside of, the perimeter seal along a first edge of the cell and interposed between the pair of flow field plates.
摘要翻译：一种电化学燃料电池堆包括多个燃料电池组件，其中，每个燃料电池组件包括压缩在一对流场板之间的电池，围绕该电池的周边密封件并插入该对流场板之间，具有大于10:1的纵横比的二极管，沿着电池的第一边缘定位在周边密封件的周围和外部，并插入在一对流场板之间。

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