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    • 4. 发明授权
    • Diffusion-type sensor cell containing sensing and counter electrodes in
intimate contact with the same side of a proton-conducting membrane and
method of use
    • 扩散型传感器单元包含与质子传导膜的同一侧紧密接触的感测和对电极及其使用方法
    • US4820386A
    • 1989-04-11
    • US151937
    • 1988-02-03
    • Anthony B. LaContiArthur E. Griffith
    • Anthony B. LaContiArthur E. Griffith
    • G01N27/49G01N27/28G01N27/54
    • G01N27/4074
    • A fast response diffusion-type sensor cell for the detection of carbon monoxide and other oxidizable or reducible gases comprising a three-electrode hydrated proton-conducting membrane cell configuration, with all electrodes in intimate contact with the same proton-conducting membrane is described. The liquid electrolyte-free system has a porous gas-diffusion sensing electrode and a counter electrode located on the same side of and in intimate contact with the proton-conducting membrane. The reference electrode is spatially located on the same or opposite side of the membrane as are the sensing and counter electrodes. The cell configuration is advantageous in that (1) the ionic resistance value between the sensing/reference electrodes is lower than that between the sensing/counter electrodes, and (2) the sensing and counter electrodes being on the same side of the membrane and connected by one or more hydrated proton-exchange membrane channels leads to faster response times and greater immunity to interference from counter electrode reaction products.
    • 描述了用于检测一氧化碳和其他可氧化或可还原气体的快速响应扩散型传感器单元,其包括三电极水合质子传导膜电池结构,其中所有电极与相同的质子传导膜紧密接触。 不含液体电解质的系统具有多孔气体扩散感测电极和位于与质子传导膜相同侧并与质子传导膜紧密接触的对电极。 参考电极在空间上位于膜的相同或相对侧上,如感测和对电极。 电池结构的优点在于(1)感测/参考电极之间的离子电阻值低于感测/对电极之间的离子电阻值,和(2)感测和对电极位于膜的同一侧并连接 通过一个或多个水合质子交换膜通道导致更快的响应时间和更大的抗反电极反应产物的干扰。