Fuel cell CO sensor
    3.
    发明授权
    Fuel cell CO sensor 失效
    燃料电池CO传感器

    公开(公告)号:US6001499A

    公开(公告)日:1999-12-14

    申请号:US957563

    申请日:1997-10-24

    摘要: The CO concentration in the H.sub.2 feed stream to a PEM fuel cell stack is monitored by measuring current and/or voltage behavior patterns from a PEM-probe communicating with the reformate feed stream. Pattern recognition software may be used to compare the current and voltage patterns from the PEM-probe to current and voltage telltale outputs determined from a reference cell similar to the PEM-probe and operated under controlled conditions over a wide range of CO concentrations in the H.sub.2 fuel stream. A CO sensor includes the PEM-probe, an electrical discharge circuit for discharging the PEM-probe to monitor the CO concentration, and an electrical purging circuit to intermittently raise the anode potential of the PEM-probe's anode to at least about 0.8 V (RHE) to electrochemically oxidize any CO adsorbed on the probe's anode catalyst.

    摘要翻译: 通过测量来自与重整油进料流连通的PEM探针的电流和/或电压行为模式来监测通向PEM燃料电池堆的H 2进料流中的CO浓度。 可以使用模式识别软件来比较从PEM探针的电流和电压模式到从类似于PEM探针的参考细胞确定的电流和电压指示输出,并且在受控条件下在H2范围内的CO浓度范围内操作 燃料流。 CO传感器包括PEM探针,用于放电PEM探针以监测CO浓度的放电电路,以及电清洗电路,以间断地将PEM探针的阳极的阳极电位提高至至少约0.8V(RHE )电化学氧化吸附在探针的阳极催化剂上的任何CO。

    PEM/SPE fuel cell
    4.
    发明授权
    PEM/SPE fuel cell 失效
    PEM / SPE燃料电池

    公开(公告)号:US5707755A

    公开(公告)日:1998-01-13

    申请号:US761958

    申请日:1996-12-09

    IPC分类号: H01M8/02 H01M8/10 H01M4/86

    摘要: A PEM/SPE fuel cell including a membrane-electrode assembly (MEA) having a plurality of oriented filament embedded the face thereof for supporting the MEA and conducting current therefrom to contiguous electrode plates.

    摘要翻译: 一种PEM / SPE燃料电池,其包括具有多个定向细丝的膜 - 电极组件(MEA),该电极组件(MEA)嵌入其表面以支撑MEA并将电流从其传导到邻接的电极板。

    PEM fuel cell monitoring system
    7.
    发明授权
    PEM fuel cell monitoring system 失效
    PEM燃料电池监控系统

    公开(公告)号:US5763113A

    公开(公告)日:1998-06-09

    申请号:US702895

    申请日:1996-08-26

    IPC分类号: H01M8/04

    摘要: Method and apparatus for monitoring the performance of H.sub.2 --O.sub.2 PEM fuel cells. Outputs from a cell/stack voltage monitor and a cathode exhaust gas H.sub.2 sensor are corrected for stack operating conditions, and then compared to predetermined levels of acceptability. If certain unacceptable conditions coexist, an operator is alerted and/or corrective measures are automatically undertaken.

    摘要翻译: 用于监测H2-O2 PEM燃料电池性能的方法和装置。 来自电池/电池电压监视器和阴极排气H2传感器的输出被校正为堆栈操作条件,然后与预定的可接受水平进行比较。 如果某些不可接受的条件共存,则会自动执行操作员和/或纠正措施。