Oxygen getters for anode protection in a solid-oxide fuel cell stack
    4.
    发明授权
    Oxygen getters for anode protection in a solid-oxide fuel cell stack 有权
    在固体氧化物燃料电池堆中用于阳极保护的氧气吸气剂

    公开(公告)号:US07435490B2

    公开(公告)日:2008-10-14

    申请号:US11593672

    申请日:2006-11-07

    摘要: In a fuel cell assembly, nickel-based anodes are readily oxidized when exposed to oxygen as may happen through atmospheric invasion of the assembly during cool-down following shutdown of the assembly. Repeated anode oxidation and reduction can be destructive of the anodes, leading to cracking and failure. To prevent such oxygen migration, oxygen getter devices containing oxygen-gettering material such as metallic nickel are provided in the fuel passageways leading to and from the anodes. Oxidation of the oxygen-gettering material is readily reversed through reduction by fuel when the assembly is restarted.

    摘要翻译: 在燃料电池组件中,当暴露于氧气时,镍基阳极容易氧化,这可能是由于在组件关闭后的冷却期间通过组件的大气侵入而发生的。 重复的阳极氧化和还原可能是阳极的破坏,导致开裂和破坏。 为了防止这种氧迁移,在通向和从阳极的燃料通道中提供含有吸氧材料如金属镍的吸氧剂装置。 当组装重新启动时,吸氧材料的氧化很容易通过燃料的还原反转。