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    • 7. 发明专利
    • Fuel cell and its operation method
    • 燃料电池及其操作方法
    • JP2007193951A
    • 2007-08-02
    • JP2006008227
    • 2006-01-17
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • MORIGA TAKUYAITO EIKIYAMADA AKIHIKOYAMADA TAMOTSUBABA TAKANORI
    • H01M8/04H01M8/10
    • Y02E60/521
    • PROBLEM TO BE SOLVED: To provide a circulation type fuel cell capable of preventing drop in voltage in generated electric power caused by enrichment of an electrode catalyst poisoning substance, and keeping utilization factor of fuel gas or oxidant gas (efficiency of the fuel cell) in a high level, and to provide the operation method of the fuel cell. SOLUTION: For example, only when average cell voltage V1 of a stack is dropped than reference cell voltage V3, drop in voltage of the stack is judged that it is caused by enrichment of the electrode catalyst poisoning substance, exhaust amounts of hydrogen gas and oxygen gas are increased with a hydrogen gas exhaust amount control valve and an oxygen gas exhaust amount control valve so that a hydrogen gas utilization factor η1 and an oxygen gas utilization factor η2 reach a target hydrogen gas utilization factor η1a and a target oxygen gas utilization factor η2a, and by decreasing the exhaust amounts of the fuel gas and the oxidant gas with the hydrogen gas exhaust amount control valve and the oxygen gas exhaust amount control valve after voltage of the generated electric power is recovered, the hydrogen gas utilization factor η1 and the oxygen gas utilization factor η2 are returned to initial values. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种循环型燃料电池,其能够防止由电极催化剂中毒物质的富集引起的发电电压下降,并且保持燃料气体或氧化剂气体的利用率(燃料的效率 电池),并且提供燃料电池的操作方法。

      解决方案:例如,仅当堆叠的平均电池电压V1比参考电池电压V3下降时,判断堆叠电压的下降是由电极催化剂中毒物质的富集引起的,氢的排出量 通过氢气排出量控制阀和氧气排出量控制阀增加气体和氧气,使得氢气利用系数η1和氧气利用系数η2达到目标氢气利用系数η1a,目标氧气 利用系数η2a,并且在恢复生成电力的电压之后,通过利用氢气排出量控制阀和氧气排出量控制阀减少燃料气体和氧化剂气体的排出量,氢气利用系数η1 氧气利用系数η2返回到初始值。 版权所有(C)2007,JPO&INPIT

    • 8. 发明专利
    • Solid polymer fuel cell
    • 固体聚合物燃料电池
    • JP2005327611A
    • 2005-11-24
    • JP2004144992
    • 2004-05-14
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • ITO EIKIYOSHIDA HIROHISATSURUMAKI SHIGERUMORIGA TAKUYAYAMADA TAMOTSUYAMADA AKIHIKOKOBAYASHI TOSHIRO
    • H01M8/24H01M8/04H01M8/10
    • Y02E60/521
    • PROBLEM TO BE SOLVED: To provide a solid polymer fuel cell 1 preventing unstable action of a downstream unit 5 which is caused by condensed water produced in an intermediate flange 7.
      SOLUTION: In this solid polymer fuel cell 1, a plurality of laminates 3, 5 formed by laminating a plurality of unit cells in each of which a fuel electrode and an oxidizer electrode are each disposed on both sides of a solid polymer electrolyte and separators 9 are disposed on the outside of these electrodes are disposed through the intermediate flange 7, a fuel gas passage 20 for a fuel gas to flow is provided in the intermediate flange 7, and the fuel gas flows in the units 3, 5 one by one by passing through the fuel gas passage 20. In this intermediate flange 7, the fuel gas passage 20 is inclined so as to remove condensed water condensed from the gas flowing in the fuel gas passage 20.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决方案:提供固体聚合物燃料电池1,防止由中间法兰7中产生的冷凝水引起的下游单元5的不稳定作用。解决方案:在该固体聚合物燃料电池1中, 在这些电极的外侧设置多个层压体3,5,其通过层叠多个单元电池而形成,所述多个单元电池分别设置在固体聚合物电解质的两面和隔板9的两侧, 通过中间凸缘7,在中间凸缘7中设置用于燃料气体流动的燃料气体通道20,并且燃料气体通过燃料气体通道20一个接一个地流入单元3,5中。在此 中间凸缘7,燃料气体通道20倾斜,以便去除在燃料气体通道20中流动的气体冷凝的冷凝水。(C)2006年,JPO&NCIPI
    • 9. 发明专利
    • Membrane electrode for fuel cell and fuel cell
    • 用于燃料电池和燃料电池的膜电极
    • JP2005216701A
    • 2005-08-11
    • JP2004022763
    • 2004-01-30
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • WATANABE SATORUTSURUMAKI SHIGERUITO EIKIMORIGA TAKUYAYOSHIDA HIROHISASATO AKIONOJIMA SHIGERUYAMADA TAMOTSUYAMADA AKIHIKO
    • H01M4/86H01M4/90H01M8/02H01M8/10
    • H01M8/1004H01M4/86H01M4/90H01M2300/0082
    • PROBLEM TO BE SOLVED: To provide a membrane electrode that is never deteriorated even in a long-term operation in a low humidification condition in a solid polymer type fuel cell. SOLUTION: This membrane electrode for a fuel cell is provided with a cathode catalyst layer to be supplied with an oxygen-containing gas on one surface of a polymer electrolyte membrane, and an anode catalyst layer to be supplied with a hydrogen-containing gas on the other surface thereof. The membrane electrode for a fuel cell is characterized by that an active oxygen removal layer containing an active oxygen removal material is formed on at least either of the interfacial surfaces between the membrane and the catalyst layers applied to both its surfaces; and the active oxygen removal material is Co 3 O 4 , Sb 2 O 4 , activated carbon or a solid acid catalyst. This fuel cell using the membrane electrode is also provided. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供即使在固体聚合物型燃料电池的低加湿条件下的长期运行中也不会劣化的膜电极。 解决方案:这种用于燃料电池的膜电极设置有在聚合物电解质膜的一个表面上供给含氧气体的阴极催化剂层和提供含氢气体的阳极催化剂层 气体在其另一个表面上。 用于燃料电池的膜电极的特征在于,在施加到其两个表面的膜和催化剂层之间的至少任一个界面上形成含有活性氧去除材料的活性氧去除层; 活性氧去除材料为活性炭或固体,活性氧除去材料为活性炭或固体 酸催化剂。 还提供了使用膜电极的该燃料电池。 版权所有(C)2005,JPO&NCIPI