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1. 发明申请

US20090263697A1 FUEL CELL 审中-公开
标题翻译：燃料电池
公开(公告)号：US20090263697A1
公开(公告)日：2009-10-22
申请号：US11910564
申请日：2006-07-13
申请人： Keiji Hashimoto , Eiichirou Morozumi , Michi Hashiba
发明人： Keiji Hashimoto , Eiichirou Morozumi , Michi Hashiba
IPC分类号： H01M8/10
CPC分类号： H01M8/04225 , H01M8/0258 , H01M8/026 , H01M8/04223 , H01M8/065 , H01M8/083 , H01M8/241 , H01M8/2457 , H01M8/2484
摘要： A fuel cell stack includes a plurality of cells each including an MEA 10 sandwiched by separators 20. A hydrogen gas supply pipe 31 and an air supply pipe 32 for externally supplying gas, and a hydrogen gas discharge pipe 35 and an air discharge pipe 36 for discharging unreacted gas are connected to the stack. Gas-supply-side valves 33 and 34 are installed in the pipes 31 and 32, respectively. Gas-discharge-side valves 37 and 38 are installed in the pipes 35 and 36, respectively. The valves 33 and 37 close an anode-electrode-layer-side space including an anode electrode layer. The valves 34 and 38 close a cathode-electrode-layer-side space including a cathode electrode layer. This structure prevents introduction of new air, thereby suppressing an increase in the concentration of nitrogen gas in the anode-electrode-layer-side space.
摘要翻译：燃料电池堆包括多个电池，每个电池包括被隔板20夹持的MEA10。一个氢气供应管31和一个用于从外部供应气体的供气管31和一个氢气排放管35和一个排气管36 排出未反应的气体连接到堆叠。供气侧阀33和34分别安装在管道31和32中。排气侧阀37和38分别安装在管道35和36中。阀33和37关闭包括阳极电极层的阳极电极层侧空间。阀34和38关闭包括阴极电极层的阴极电极层侧空间。这种结构防止了新的空气的引入，从而抑制了阳极电极层侧空间中的氮的浓度的增加。

2. 发明申请

US20090075140A1 ELECTRODE STRUCTURE OF FUEL CELL 审中-公开
标题翻译：燃料电池的电极结构
公开(公告)号：US20090075140A1
公开(公告)日：2009-03-19
申请号：US11575070
申请日：2006-07-20
申请人： Keiji Hashimoto , Eiichirou Morozumi , Michi Hashiba
发明人： Keiji Hashimoto , Eiichirou Morozumi , Michi Hashiba
IPC分类号： H01M4/90
CPC分类号： H01M8/1004 , C01B3/0031 , C01B3/0036 , C01B3/0057 , C22C14/00 , C22C19/007 , C22C19/03 , C22C30/00 , C22C38/08 , C22C38/14 , H01M4/881 , H01M4/90 , H01M4/9041 , H01M4/9091 , H01M8/04104 , H01M8/04149 , H01M8/04223 , Y02E60/327
摘要： An MEA includes an electrolyte membrane permeable to hydroxide ions. A catalyst layer formed of a hydrogen storage alloy is provided on one surface of the membrane facing the anode electrode layer. Another catalyst layer formed of platinum-on carbon is provided on the opposite surface of the membrane facing the cathode electrode layer. The catalyst layer on the anode-electrode-layer side dissociates hydrogen gas into atomic hydrogen, diffuses the atomic hydrogen by way of solid phase diffusion, and absorbs/desorbs atomic hydrogen. The catalyst layer on the cathode-electrode-layer side forms hydroxide ions from air, humidifying water, and electrons. The membrane allows movement of the hydroxide ions to the catalyst layer on the anode-electrode-layer side. This leads to formation of water on the anode-electrode-layer side, whereby occurrence of dry-up can be prevented. Even when flooding arises from formed water, atomic hydrogen can smoothly move through solid-phase diffusion. An open circuit voltage of the catalyst layer on the cathode-electrode-layer side can be made smaller than an elution potential of platinum. Since the catalyst layer on the anode-electrode-layer side absorbs excess hydrogen gas, wasteful discharge of hydrogen gas can be avoided.
摘要翻译： MEA包括可渗透氢氧根离子的电解质膜。在面向阳极电极层的膜的一个表面上设置由储氢合金形成的催化剂层。由铂 - 碳形成的另一催化剂层设置在面对阴极电极层的膜的相对表面上。阳极电极层侧的催化剂层将氢气分解为原子氢，通过固相扩散扩散原子氢，并吸收/解吸原子氢。阴极电极层侧的催化剂层由空气，加湿水和电子形成氢氧根离子。膜允许氢氧根离子移动到阳极 - 电极层侧的催化剂层。这导致在阳极电极层侧形成水，由此可以防止干燥的发生。即使是由形成的水引起的洪水，原子氢也能平稳地移动通过固相扩散。可以使阴极电极层侧的催化剂层的开路电压小于铂的洗脱电位。由于阳极电极层侧的催化剂层吸收过量的氢气，因此可以避免氢气的排出。

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