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1. 发明授权

US07435503B2 Planar membraneless microchannel fuel cell 有权
标题翻译：平面无膜微通道燃料电池
公开(公告)号：US07435503B2
公开(公告)日：2008-10-14
申请号：US11150622
申请日：2005-06-10
申请人： Jamie Lee Cohen , David James Volpe , Daron A. Westly , Alexander Pechenik , Hector D. Abruna
发明人： Jamie Lee Cohen , David James Volpe , Daron A. Westly , Alexander Pechenik , Hector D. Abruna
IPC分类号： H01M8/04
CPC分类号： H01M8/08 , H01M8/006 , H01M8/026 , H01M8/0289 , H01M8/04082 , H01M8/04186 , H01M8/083 , H01M8/086
摘要： A planar microfluidic membraneless flow cell. The design eliminates the need for a mechanical membrane, such as a polyelectrolyte membrane (PEM) in a fuel cell, by providing a flow channel in which laminar flow regimes exist in two fluids flowing in mutual contact to form a “virtual interface” in the flow channel. In the flow cell, diffusion at the interface is the only mode of mass transport between the two fluids. In a fuel cell embodiment, a planar design provides to large contact areas between the two streams, which are fuel and oxidant streams, and between each stream and a respective electrode. In some embodiments, silicon microchannels, of fixed length and variable width and height, have been used to generate power using formic acid as fuel and oxygen as oxidant. Power densities on the order of 180 μW/cm2 have been obtained using this planar design.
摘要翻译：平面微流体无膜流通池。该设计消除了对燃料电池中的机械膜，例如聚电解质膜（PEM）的需要，通过提供流动通道，其中层流状态存在于相互接触的两个流体中以在相互接触中形成“虚拟界面” 流通道。在流动池中，界面处的扩散是两种流体之间唯一的质量传递模式。在燃料电池实施例中，平面设计提供两个流之间的大的接触区域，这两个物流是燃料和氧化剂流，并且在每个流和相应的电极之间。在一些实施例中，具有固定长度和可变宽度和高度的硅微通道已经用于使用甲酸作为燃料和氧气作为氧化剂来产生功率。使用这种平面设计已经获得了大约180μW/ cm 2的功率密度。

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