Method for forming a chemical microreactor
    2.
    发明授权
    Method for forming a chemical microreactor 失效
    形成化学微反应器的方法

    公开(公告)号:US07534402B2

    公开(公告)日:2009-05-19

    申请号:US11196634

    申请日:2005-08-02

    IPC分类号: B01J19/24 B81B1/00

    摘要: Disclosed is a chemical microreactor that provides a means to generate hydrogen fuel from liquid sources such as ammonia, methanol, and butane through steam reforming processes when mixed with an appropriate amount of water. The microreactor contains capillary microchannels with integrated resistive heaters to facilitate the occurrence of catalytic steam reforming reactions. Two distinct embodiment styles are discussed. One embodiment style employs a packed catalyst capillary microchannel and at least one porous membrane. Another embodiment style employs a porous membrane with a large surface area or a porous membrane support structure containing a plurality of porous membranes having a large surface area in the aggregate, i.e., greater than about 1 m2/cm3. Various methods to form packed catalyst capillary microchannels, porous membranes and porous membrane support structures are also disclosed.

    摘要翻译: 公开了一种化学微反应器,其提供了当与适量的水混合时通过蒸汽重整过程从液体源例如氨,甲醇和丁烷产生氢燃料的手段。 微反应器包含具有集成电阻加热器的毛细管微通道,以促进催化蒸汽重整反应的发生。 讨论了两种不同的实施方式。 一种实施方案采用填充催化剂毛细管微通道和至少一种多孔膜。 另一种实施方案采用具有大表面积的多孔膜或多孔膜支撑结构,其包含多个聚集体中具有大表面积的多孔膜,即大于约1m 2 / cm 3。 还公开了形成填充催化剂毛细管微通道,多孔膜和多孔膜支撑结构的各种方法。

    Chemical microreactor and method thereof
    3.
    发明授权
    Chemical microreactor and method thereof 失效
    化学微反应器及其方法

    公开(公告)号:US06960235B2

    公开(公告)日:2005-11-01

    申请号:US10007412

    申请日:2001-12-05

    摘要: A chemical microreactor suitable for generation of hydrogen fuel from liquid sources such as ammonia, methanol, and butane through steam reforming processes when mixed with an appropriate amount of water contains capillary microchannels with integrated resistive heaters to facilitate the occurrence of catalytic steam reforming reactions. One such microreactor employs a packed catalyst capillary microchannel and at least one porous membrane. Another employs a porous membrane with a large surface area or a porous membrane support structure containing a plurality of porous membranes having a large surface area in the aggregate, i.e., greater than about 1 m2/cm3. The packed catalyst capillary microchannels, porous membranes and porous membrane support structures may be formed by a variety of methods.

    摘要翻译: 当与适量的水混合时,适用于通过蒸汽重整过程从液体源(如氨,甲醇和丁烷)产生氢燃料的化学微反应器含有集成电阻加热器的毛细管微通道,以促进催化蒸汽重整反应的发生。 一个这样的微反应器采用填充催化剂毛细管微通道和至少一个多孔膜。 另一种采用具有大表面积的多孔膜或多孔膜支撑结构,其包含多个聚集体中具有大表面积的多孔膜,即大于约1m 2 / cm 2 > 3 。 填充的催化剂毛细管微通道,多孔膜和多孔膜支撑结构可以通过多种方法形成。

    Method of forming a package for mems-based fuel cell
    4.
    发明授权
    Method of forming a package for mems-based fuel cell 失效
    形成基于mems的燃料电池封装的方法

    公开(公告)号:US06821666B2

    公开(公告)日:2004-11-23

    申请号:US09967145

    申请日:2001-09-28

    IPC分类号: H01M810

    摘要: A MEMS-based fuel cell package and method thereof is disclosed. The fuel cell package comprises seven layers: (1) a sub-package fuel reservoir interface layer, (2) an anode manifold support layer, (3) a fuel/anode manifold and resistive heater layer, (4) a Thick Film Microporous Flow Host Structure layer containing a fuel cell, (5) an air manifold layer, (6) a cathode manifold support structure layer, and (7) a cap. Fuel cell packages with more than one fuel cell are formed by positioning stacks of these layers in series and/or parallel. The fuel cell package materials such as a molded plastic or a ceramic green tape material can be patterned, aligned and stacked to form three dimensional microfluidic channels that provide electrical feedthroughs from various layers which are bonded together and mechanically support a MEMOS-based miniature fuel cell. The package incorporates resistive heating elements to control the temperature of the fuel cell stack. The package is fired to form a bond between the layers and one or more microporous flow host structures containing fuel cells are inserted within the Thick Film Microporous Flow Host Structure layer of the package.

    摘要翻译: 公开了一种基于MEMS的燃料电池组件及其方法。 燃料电池组件包括七层:(1)一个子包装燃料储存器界面层,(2)一个阳极歧管支撑层,(3)燃料/阳极歧管和电阻加热器层,(4)厚膜微孔流 包含燃料电池的主体结构层,(5)空气歧管层,(6)阴极歧管支撑结构层,和(7)盖。 具有多于一个燃料电池的燃料电池组件通过将这些层的堆叠定位成串联和/或平行而形成。 诸如模制塑料或陶瓷生胶带材料的燃料电池封装材料可以被图案化,对准和堆叠以形成三维微流体通道,其提供来自各种层的电馈通,这些层通过粘合在一起并机械地支撑基于MEMOS的微型燃料电池 。 该封装包含电阻加热元件以控制燃料电池堆的温度。 烧结包装以形成层之间的结合,并且将一个或多个含有燃料电池的微孔流动主体结构插入到包装的厚膜微孔流动主体结构层内。

    Photodetector having high speed and sensitivity
    5.
    发明授权
    Photodetector having high speed and sensitivity 失效
    光电检测器具有高速度和灵敏度

    公开(公告)号:US5051804A

    公开(公告)日:1991-09-24

    申请号:US444339

    申请日:1989-12-01

    摘要: The present invention provides a photodetector having an advantageous combination of sensitivity and speed; it has a high sensitivity while retaining high speed. In a preferred embodiment, visible light is detected, but in some embodiments, x-rays can be detected, and in other embodiments infrared can be detected. The present invention comprises a photodetector having an active layer, and a recombination layer. The active layer has a surface exposed to light to be detected, and comprises a semiconductor, having a bandgap graded so that carriers formed due to interaction of the active layer with the incident radiation tend to be swept away from the exposed surface. The graded semiconductor material in the active layer preferably comprises Al.sub.1-x Ga.sub.x As. An additional sub-layer of graded In.sub.1-y Ga.sub.y As may be included between the Al.sub.1-x Ga.sub.x As layer and the recombination layer. The recombination layer comprises a semiconductor material having a short recombination time such as a defective GaAs layer grown in a low temperature process. The recombination layer is positioned adjacent to the active layer so that carriers from the active layer tend to be swept into the recombination layer. In an embodiment, the photodetector may comprise one or more additional layers stacked below the active and recombination layers. These additional layers may include another active layer and another recombination layer to absorb radiation not absorbed while passing through the first layers. A photodetector having a stacked configuration may have enhanced sensitivity and responsiveness at selected wavelengths such as infrared.

    摘要翻译: 本发明提供了具有灵敏度和速度的有利组合的光电检测器; 它具有高灵敏度,同时保持高速度。 在优选实施例中,检测到可见光,但是在一些实施例中,可以检测x射线,并且在其它实施例中可以检测到红外线。 本发明包括具有活性层的光电检测器和复合层。 有源层具有暴露于待检测光的表面,并且包括半导体,具有带隙分级,使得由于活性层与入射辐射的相互作用而形成的载流子倾向于从暴露表面扫过。 活性层中的分级半导体材料优选包含Al1-xGaxA。 在Al1-xGaxAs层和复合层之间可以包括附加的分级In1-yGayAs子层。 复合层包括具有短复合时间的半导体材料,例如在低温工艺中生长的不良GaAs层。 复合层定位成与有源层相邻,使得来自有源层的载流子倾向于被扫入复合层。 在一个实施例中,光电检测器可以包括在活性和复合层之下堆叠的一个或多个附加层。 这些附加层可以包括另一个活性层和另一个复合层,以吸收在通过第一层时不被吸收的辐射。 具有堆叠配置的光电检测器可以具有增强的灵敏度和选择的波长例如红外线的响应性。

    High power density fuel cell comprising an array of microchannels
    6.
    发明授权
    High power density fuel cell comprising an array of microchannels 有权
    包括微通道阵列的高功率密度燃料电池

    公开(公告)号:US08715882B2

    公开(公告)日:2014-05-06

    申请号:US12829331

    申请日:2010-07-01

    IPC分类号: H01M8/04 H01M8/08

    摘要: A phosphoric acid fuel cell according to one embodiment includes an array of microchannels defined by a porous electrolyte support structure extending between bottom and upper support layers, the microchannels including fuel and oxidant microchannels; fuel electrodes formed along some of the microchannels; and air electrodes formed along other of the microchannels. A method of making a phosphoric acid fuel cell according to one embodiment includes etching an array of microchannels in a substrate, thereby forming walls between the microchannels; processing the walls to make the walls porous, thereby forming a porous electrolyte support structure; forming anode electrodes along some of the walls; forming cathode electrodes along other of the walls; and filling the porous electrolyte support structure with a phosphoric acid electrolyte. Additional embodiments are also disclosed.

    摘要翻译: 根据一个实施方案的磷酸燃料电池包括由在底部和上部支撑层之间延伸的多孔电解质支撑结构限定的微通道阵列,所述微通道包括燃料和氧化剂微通道; 沿着一些微通道形成燃料电极; 以及沿其他微通道形成的空气电极。 根据一个实施方案的制备磷酸燃料电池的方法包括在衬底中蚀刻微通道阵列,从而在微通道之间形成壁; 处理壁以使壁多孔,从而形成多孔电解质支撑结构; 沿着一些壁形成阳极电极; 沿其他壁形成阴极电极; 以及用磷酸电解质填充多孔电解质支撑结构。 还公开了另外的实施例。

    High power density fuel cell comprising an array of microchannels
    7.
    发明授权
    High power density fuel cell comprising an array of microchannels 有权
    包括微通道阵列的高功率密度燃料电池

    公开(公告)号:US08557480B2

    公开(公告)日:2013-10-15

    申请号:US12829316

    申请日:2010-07-01

    摘要: A fuel cell according to one embodiment includes a porous electrolyte support structure defining an array of microchannels, the microchannels including fuel and oxidant microchannels; fuel electrodes formed along some of the microchannels; and oxidant electrodes formed along other of the microchannels. A method of making a fuel cell according to one embodiment includes forming an array of walls defining microchannels therebetween using at least one of molding, stamping, extrusion, injection and electrodeposition; processing the walls to make the walls porous, thereby creating a porous electrolyte support structure; forming anode electrodes along some of the microchannels; and forming cathode electrodes along other of the microchannels. Additional embodiments are also disclosed.

    摘要翻译: 根据一个实施例的燃料电池包括限定微通道阵列的多孔电解质支撑结构,所述微通道包括燃料和氧化剂微通道; 沿着一些微通道形成燃料电极; 和沿其他微通道形成的氧化剂电极。 根据一个实施例的制造燃料电池的方法包括使用模制,冲压,挤出,注射和电沉积中的至少一种形成在其间限定微通道的壁阵列; 处理壁以使壁多孔,从而产生多孔电解质支撑结构; 沿着一些微通道形成阳极电极; 并沿其他微通道形成阴极电极。 还公开了另外的实施例。

    Chemical microreactor and method thereof
    9.
    发明授权
    Chemical microreactor and method thereof 有权
    化学微反应器及其方法

    公开(公告)号:US07993534B2

    公开(公告)日:2011-08-09

    申请号:US12412599

    申请日:2009-03-27

    IPC分类号: C23F1/00

    摘要: A method for forming a chemical microreactor includes forming at least one capillary microchannel in a substrate having at least one inlet and at least one outlet, integrating at least one heater into the chemical microreactor, interfacing the capillary microchannel with a liquid chemical reservoir at the inlet of the capillary microchannel, and interfacing the capillary microchannel with a porous membrane near the outlet of the capillary microchannel, the porous membrane being positioned beyond the outlet of the capillary microchannel, wherein the porous membrane has at least one catalyst material imbedded therein.

    摘要翻译: 用于形成化学微反应器的方法包括在具有至少一个入口和至少一个出口的基底中形成至少一个毛细管微通道,将至少一个加热器集成到化学微反应器中,将毛细管微通道与入口处的液体化学容器 的毛细管微通道,并且将毛细管微通道与毛细管微通道出口附近的多孔膜接合,多孔膜位于毛细管微通道出口之外,其中多孔膜具有嵌入其中的至少一种催化剂材料。