Low contaminant formic acid fuel for direct liquid fuel cell

    公开(公告)号:US20060059769A1

    公开(公告)日:2006-03-23

    申请号:US11079893

    申请日:2005-03-14

    IPC分类号: C10L1/30 C06B33/00 H01M8/00

    摘要: A low contaminant formic acid fuel is especially suited toward use in a direct organic liquid fuel cell. A fuel of the invention provides high power output that is maintained for a substantial time and the fuel is substantially non-flammable. Specific contaminants and contaminant levels have been identified as being deleterious to the performance of a formic acid fuel in a fuel cell, and embodiments of the invention provide low contaminant fuels that have improved performance compared to known commercial bulk grade and commercial purified grade formic acid fuels. Preferred embodiment fuels (and fuel cells containing such fuels) including low levels of a combination of key contaminants, including acetic acid, methyl formate, and methanol.

    Formic acid fuel cells and catalysts
    3.
    发明申请
    Formic acid fuel cells and catalysts 失效
    甲酸燃料电池和催化剂

    公开(公告)号:US20070099064A1

    公开(公告)日:2007-05-03

    申请号:US10578055

    申请日:2004-11-05

    IPC分类号: H01M4/92 H01M4/96 H01M8/10

    摘要: An exemplary fuel cell of the invention includes a formic acid fuel solution in communication with an anode (12, 134), an oxidizer in communication with a cathode (16, 135) electrically linked to the anode, and an anode catalyst that includes Pd. An exemplary formic acid fuel cell membrane electrode assembly (130) includes a proton-conducting membrane (131) having opposing first (132) and second surfaces (133), a cathode catalyst on the second membrane surface, and an anode catalyst including Pd on the first surface.

    摘要翻译: 本发明的示例性燃料电池包括与阳极(12,134)连通的甲酸燃料溶液,与阳极电连接的阴极(16,135)连通的氧化剂和包含Pd的阳极催化剂。 示例性的甲酸燃料电池膜电极组件(130)包括具有相对的第一(132)和第二表面(133)的质子传导膜(131),在第二膜表面上的阴极催化剂和包含Pd的阳极催化剂 第一个表面。

    Bi-direction rapid action electrostatically actuated microvalve
    6.
    发明申请
    Bi-direction rapid action electrostatically actuated microvalve 审中-公开
    双向快速动作静电驱动微型阀

    公开(公告)号:US20070023719A1

    公开(公告)日:2007-02-01

    申请号:US11493376

    申请日:2006-07-26

    IPC分类号: F16K31/02

    摘要: A bi-directional electrostatic microvalve includes a membrane electrode that is controlled by application of voltage to fixed electrodes disposed on either side of the membrane electrode. Dielectric insulating layers separate the electrodes. One of the fixed electrodes defines a microcavity. Microfluidic channels formed into the electrodes provide fluid to the microcavity. A central pad defined in the microcavity places a portion of the second electrode close to the membrane electrode to provide a quick actuation while the microcavity reduces film squeezing pressure of the membrane electrode. In preferred embodiment microvalves, low surface energy and low surface charge trapping coatings, such as fluorocarbon films made from cross-linked carbon di-fluoride monomers or surface monolayers made from fluorocarbon terminated silanol compounds coatings coat the electrode low bulk charge trapping dielectric layers limit charge trapping and other problems and increase device lifetime operation.

    摘要翻译: 双向静电微型阀包括通过向设置在膜电极的两侧的固定电极施加电压来控制的膜电极。 绝缘层将电极分开。 固定电极之一限定微腔。 形成在电极中的微流体通道为微腔提供流体。 限定在微腔中的中心衬垫使第二电极的一部分靠近膜电极,以提供快速致动,同时微腔降低膜电极的膜挤压压力。 在优选的实施方案中,微型阀,低表面能和低表面电荷捕获涂层,例如由交联的碳二氟化物单体制成的碳氟化合物膜或由氟碳封端的硅烷醇化合物涂层制成的表面单层涂覆电极,低体积电荷捕获电介质层限制电荷 捕捉等问题,增加设备的使用寿命。