Heat and water management device and method in fuel cells
    3.
    发明申请
    Heat and water management device and method in fuel cells 有权
    燃料电池中的热水管理装置和方法

    公开(公告)号:US20080032169A1

    公开(公告)日:2008-02-07

    申请号:US11807228

    申请日:2007-05-24

    IPC分类号: H01M8/00 B29C45/00

    摘要: A method and device for fuel cell heat and water management is provided. A thermally and electrically conductive hydrophilic heat and mass transport element is provided to the fuel cell spanning from inside to outside the cell. The transport element is deposited between current collector and gas diffusion layers, where heat is transported along the transport element from an interior portion of the element inside the cell to an exterior portion of the element outside the cell. Liquid water is transported along the element into or out of the cell, and heat is removed from the exterior portion by any combination of radiation, free convection and forced convection, and where the liquid water is removed from the exterior portion by any combination of convection driven evaporation and advection. The water is added to the cell from the exterior to the interior by any combination of advection and capillary wicking.

    摘要翻译: 提供了一种用于燃料电池热水管理的方法和装置。 向导电池内部和外部的燃料电池提供导热和导电的亲水热传质元件。 传输元件沉积在集流体和气体扩散层之间,其中热量沿着传输元件从电池内的元件的内部传送到电池单元外部的外部部分。 液体水沿着元件进入或离开电池,并且通过辐射,自由对流和强制对流的任何组合从外部部分去除热量,并且其中液体水通过对流的任何组合从外部部分去除 驱动蒸发和平流。 通过对流和毛细管芯吸的任何组合将水从外部添加到细胞中。

    Fuel cell water management
    4.
    发明申请
    Fuel cell water management 审中-公开
    燃料电池水管理

    公开(公告)号:US20070284253A1

    公开(公告)日:2007-12-13

    申请号:US11805990

    申请日:2007-05-24

    IPC分类号: B01D61/42 H01M8/04

    摘要: A polymer electrolyte membrane fuel cell water management device is provided. The device includes a hydrophilic water transport element spanning from inside the fuel cell to outside the fuel cell and disposed between a gas diffusion layer and a current collector layer in the cell. The transport element includes an intermediate wick outside the fuel cell that is hydraulically coupled to the transport element, and has a transport element structure integrated with a flow field structure within the fuel cell. The device further includes an electroosmotic pump, where the pump is located outside the fuel cell and is hydraulically coupled to the intermediate wick. The hydraulically coupled pump actively removes excess water from the flow field structure and the gas diffusion layer through the transport element, where a key aspect of the invention is the decoupling of water removal from oxidant delivery and reduced parasitic loads.

    摘要翻译: 提供了一种聚合物电解质膜燃料电池水管理装置。 该装置包括从燃料电池内部到燃料电池外部并且设置在电池中的气体扩散层和集电器层之间的亲水输送元件。 运输元件包括在燃料电池外部液压地连接到输送元件的中间油芯,并且具有与燃料电池内的流场结构集成的输送元件结构。 该装置还包括电渗泵,其中泵位于燃料电池外部并且液压地连接到中间灯芯。 液压耦合泵主动地从流场结构和气体扩散层中移除多余的水通过传输元件,其中本发明的关键方面是去除水从氧化剂输送和减少的寄生负载。

    Orientation independent electroosmotic pump
    6.
    发明申请
    Orientation independent electroosmotic pump 有权
    定向独立电渗泵

    公开(公告)号:US20060254913A1

    公开(公告)日:2006-11-16

    申请号:US11125720

    申请日:2005-05-10

    IPC分类号: C07K1/26 G01N27/00

    摘要: According to some embodiments, a method, system, and apparatus for providing an orientation independent electroosmotic pump. In some embodiments, the method includes an anode and a cathode at different electrical potentials, the anode and cathode are each sealed in an ion-exchange membrane and at least partially immersed in an electrolyte contained in a reservoir of an electroosmotic pump, collecting gases generated by electrolytic decomposition of the electrolyte within a space defined by the ion-exchange membranes that seal the anode and cathode, recombining the collected gases to produce a liquid using a catalyst, the catalyst being located outside of the reservoir, and introducing the produced liquid into the fluid reservoir through an osmotic membrane.

    摘要翻译: 根据一些实施例,一种用于提供取向独立电渗泵的方法,系统和装置。 在一些实施例中,该方法包括在不同电势下的阳极和阴极,阳极和阴极各自密封在离子交换膜中并且至少部分地浸入包含在电渗泵的储存器中的电解质中,收集产生的气体 通过在由密封阳极和阴极的离子交换膜限定的空间内电解分解电解质,使用催化剂将收集的气体重新组合以产生液体,催化剂位于储存器外部,并将所产生的液体引入 流体储存器通过渗透膜。

    LIQUID AND GEL ELECTRODES FOR TRANSVERSE FREE FLOW ELECTROPHORESIS
    7.
    发明申请
    LIQUID AND GEL ELECTRODES FOR TRANSVERSE FREE FLOW ELECTROPHORESIS 有权
    液体和凝胶电极用于横向自由流动电泳

    公开(公告)号:US20120228141A1

    公开(公告)日:2012-09-13

    申请号:US13413161

    申请日:2012-03-06

    IPC分类号: C25B9/00 B01D43/00

    摘要: The present invention provides a mechanism for separating or isolating charged particles under the influence of an electric field without metal electrodes being in direct contact with the sample solution. The metal electrodes normally in contact with the sample are replaced with high conductivity fluid electrodes situated parallel and adjacent to the sample. When the fluid electrodes transmit the electric field across the sample, particles within the sample migrate according to their electrophoretic mobility.

    摘要翻译: 本发明提供了一种用于在没有金属电极与样品溶液直接接触的电场的影响下分离或分离带电粒子的机理。 通常与样品接触的金属电极被替换为与样品平行且相邻的高导电性流体电极。 当流体电极跨越样品传播电场时,样品内的颗粒根据其电泳迁移率而迁移。

    Micro-fabricated electrokinetic pump
    8.
    发明授权
    Micro-fabricated electrokinetic pump 有权
    微电动动力泵

    公开(公告)号:US07449122B2

    公开(公告)日:2008-11-11

    申请号:US10968376

    申请日:2004-10-18

    IPC分类号: F04B1/00

    CPC分类号: F04B17/00 F04B19/006

    摘要: An electrokinetic pump for pumping a liquid includes a pumping body having a plurality of narrow, short and straight pore apertures for channeling the liquid through the body. A pair of electrodes for applying a voltage differential are formed on opposing surfaces of the pumping body at opposite ends of the pore apertures. The pumping body is formed on a support structure to maintain a mechanical integrity of the pumping body. The pump can be fabricated using conventional semiconductor processing steps. The pores are preferably formed using plasma etching. The structure is oxidized to insulate the structure and also narrow the pores. A support structure is formed by etching a substrate and removing an interface oxide layer. Electrodes are formed to apply a voltage potential across the pumping body. Another method of fabricating an electrokinetic pump includes providing etch stop alignment marks so that the etch step self-terminates.

    摘要翻译: 用于泵送液体的电动泵包括具有多个窄的,短的和直的孔隙的泵送体,用于将液体引导通过身体。 用于施加电压差的一对电极形成在孔隙的相对端处的泵体的相对表面上。 泵体形成在支撑结构上以保持泵体的机械完整性。 泵可以使用常规的半导体处理步骤制造。 优选使用等离子体蚀刻形成孔。 该结构被氧化以使结构绝缘并且还使孔变窄。 通过蚀刻衬底并除去界面氧化物层形成支撑结构。 形成电极以在泵体上施加电压电位。 制造电动泵的另一种方法包括提供蚀刻停止对准标记,使得蚀刻步骤自我终止。

    Device and methods of detection of airborne agents
    9.
    发明授权
    Device and methods of detection of airborne agents 有权
    空气传播剂检测装置及方法

    公开(公告)号:US08247238B2

    公开(公告)日:2012-08-21

    申请号:US13217616

    申请日:2011-08-25

    IPC分类号: G01N21/75

    摘要: Provided are methods, devices and systems that utilize free-surface fluidics and SERS for analyte detection with high sensitivity and specificity. The molecules can be airborne agents, including but not limited to explosives, narcotics, hazardous chemicals, or other chemical species. The free-surface fluidic architecture is created using an open microchannel, and exhibits a large surface to volume ratio. The free-surface fluidic interface can filter interferent molecules, while concentrating airborne analyte molecules. The microchannel flow enables controlled aggregation of SERS-active probe particles in the flow, thereby enhancing the detector's sensitivity.

    摘要翻译: 提供了利用自由表面流体学和SERS用于具有高灵敏度和特异性的分析物检测的方法,装置和系统。 分子可以是空气传播剂,包括但不限于爆炸物,麻醉剂,危险化学品或其他化学物质。 自由表面流体结构使用开放的微通道产生,并且表现出大的表面与体积比。 自由表面流体界面可以过滤干扰分子,同时浓缩空气中的分析物。 微通道流动使SERS活性探针颗粒在流动中受控聚集,从而提高检测器的灵敏度。

    MICRO-FABRICATED ELECTROKINETIC PUMP
    10.
    发明申请
    MICRO-FABRICATED ELECTROKINETIC PUMP 有权
    微型电动泵

    公开(公告)号:US20050042110A1

    公开(公告)日:2005-02-24

    申请号:US10366121

    申请日:2003-02-12

    CPC分类号: F04B17/00 F04B19/006

    摘要: An electrokinetic pump for pumping a liquid includes a pumping body having a plurality of narrow, short and straight pore apertures for channeling the liquid through the body. A pair of electrodes for applying a voltage differential are formed on opposing surfaces of the pumping body at opposite ends of the pore apertures. The pumping body is formed on a support structure to maintain a mechanical integrity of the pumping body. The pump can be fabricated using conventional semiconductor processing steps. The pores are preferably formed using plasma etching. The structure is oxidized to insulate the structure and also narrow the pores. A support structure is formed by etching a substrate and removing an interface oxide layer. Electrodes are formed to apply a voltage potential across the pumping body. Another method of fabricating an electrokinetic pump includes providing etch stop alignment marks so that the etch step self-terminates.

    摘要翻译: 用于泵送液体的电动泵包括具有多个窄的,短的和直的孔隙的泵送体,用于将液体引导通过身体。 用于施加电压差的一对电极形成在孔隙的相对端处的泵体的相对表面上。 泵体形成在支撑结构上以保持泵体的机械完整性。 泵可以使用常规的半导体处理步骤制造。 优选使用等离子体蚀刻形成孔。 该结构被氧化以使结构绝缘并且还使孔变窄。 通过蚀刻衬底并除去界面氧化物层形成支撑结构。 形成电极以在泵体上施加电压电位。 制造电动泵的另一种方法包括提供蚀刻停止对准标记,使得蚀刻步骤自我终止。