公开(公告)号：US20050081433A1

公开(公告)日：2005-04-21

申请号：US10688711

申请日：2003-10-17

申请人： Xiaoming Ren ,  Kevin Shufon ,  Frank Kovacs

发明人： Xiaoming Ren ,  Kevin Shufon ,  Frank Kovacs

IPC分类号： C10L1/00 ,  C10L1/02 ,  C10L1/10 ,  C10L1/12 ,  C10L1/18 ,  C10L1/28 ,  C10L1/30

CPC分类号： C10L1/003 ,  C10L1/02 ,  C10L1/10 ,  C10L1/1216 ,  C10L1/1275 ,  C10L1/1852 ,  C10L1/28 ,  C10L1/301 ,  C10L1/303 ,  F17C11/005

摘要： Fuel mixtures for direct methanol fuel cells are disclosed. The fuels include methanol and additives that react with water to produce methanol and other easily electro-oxidizable compounds including dimethyloxymethane, methylorthoformate, tetramethylorthocarbonate, trimethylborate, and tetramethylorthosilicate. Other additives to improve safety and efficiency of the fuel cell include sulfonated activated carbon particles and metal hydrides, such as LiAlH4, NaBH4, LiBH4, (CH3)2 NHBH3, NaAlH4, B2H6, NaCNBH3, CaH2, LiH, NaH, KH or sodium bis (2-methoxyethoxy) dihydridaluminate.

摘要翻译： 公开了用于直接甲醇燃料电池的燃料混合物。 燃料包括与水反应以产生甲醇的甲醇和添加剂，以及其它易于电氧化的化合物，包括二甲氧基甲烷，原甲酸甲酯，原碳酸四甲酯，硼酸三甲酯和原硅酸四甲酯。 提高燃料电池的安全性和效率的其它添加剂包括磺化活性炭颗粒和金属氢化物，例如LiAlH 4，NaBH 4，LiBH 4，/ >，（CH 3 3）2 NHBH 3，NaAlH 4，B 2， H 6，NaCNBH 3，CaH 2，LiH，NaH，KH或双（2-甲氧基乙氧基）二氢铝酸钠。

公开(公告)号：US20080032182A1

公开(公告)日：2008-02-07

申请号：US11873259

申请日：2007-10-16

申请人： Xiaoming Ren ,  Frank Kovacs ,  Kevin Shufon ,  Shimshon Gottesfeld

发明人： Xiaoming Ren ,  Frank Kovacs ,  Kevin Shufon ,  Shimshon Gottesfeld

IPC分类号： H01M4/86

CPC分类号： H01M8/04186 ,  H01M8/04171 ,  H01M8/04291 ,  H01M8/1011 ,  H01M8/2475 ,  Y02E60/523

摘要： Passive water management techniques are provided in an air-breathing direct oxidation fuel cell system. A highly hydrophobic component with sub-micrometer wide pores is laminated to the catalyzed membrane electrolyte on the cathode side. This component blocks liquid water from traveling out of the cathode and instead causes the water to be driven through the polymer membrane electrolyte to the cell anode. The air-breathing direct oxidation fuel cell also includes a layer of cathode backing and additional cathode filter components on an exterior aspect of the cell cathode which lessen the water vapor escape rate from the cell cathode. The combination of the well laminated hydrophobic microporous layer, the thicker backing and the added filter layer, together defines a cathode structure of unique water management capacity, that enables to operate a DMFC with direct, controlled rate supply of neat (100%) methanol, without the need for any external supply or pumping of water. The cell anode is provided with a hydrophilic backing layer. When the water is driven through the polymer membrane electrolyte from the cell cathode to the cell anode chamber, it is available for the anodic reaction, and any excess water is carried out along CO2 ventilation channels to the outside environment.

摘要翻译： 被动水管理技术在空气呼吸直接氧化燃料电池系统中提供。 将具有亚微米宽孔的高疏水性组分层压到阴极侧的催化膜电解质上。 该组分阻止液体水从阴极流出，而是使水通过聚合物膜电解质驱动到电池阳极。 空气呼吸直接氧化燃料电池还包括在电池阴极的外部方面的阴极背衬和附加的阴极过滤器部件的层，其降低了来自电池阴极的水蒸气逸出速率。 良好层压的疏水微孔层，较厚的背衬和增加的过滤层的组合共同限定了独特的水管理能力的阴极结构，能够以直（100％）的甲醇直接控制速率供应来操作DMFC， 而不需要任何外部供应或抽水。 电池阳极设置有亲水背衬层。 当水通过聚合物膜电解质从电池阴极驱动到电池阳极室时，可用于阳极反应，并且任何多余的水都沿着CO 2通气通道进入外部 环境。

公开(公告)号：US20050170224A1

公开(公告)日：2005-08-04

申请号：US11023666

申请日：2004-12-28

申请人： Xiaoming Ren ,  Juan Becerra ,  Robert Hirsch ,  Shimshon Gottesfeld ,  Frank Kovacs ,  Kevin Shufon

发明人： Xiaoming Ren ,  Juan Becerra ,  Robert Hirsch ,  Shimshon Gottesfeld ,  Frank Kovacs ,  Kevin Shufon

IPC分类号： H01M4/86 ,  H01M4/92 ,  H01M4/94 ,  H01M4/96 ,  H01M8/02 ,  H01M8/04 ,  H01M8/10

CPC分类号： H01M8/2455 ,  H01M8/04171 ,  H01M8/04186 ,  H01M8/04291 ,  H01M8/1011 ,  H01M8/2475 ,  Y02E60/523

摘要： A fuel cell system having a methanol vapor delivery component or film is provided. The component includes an evaporation pad. The evaporation pad is disposed within the fuel cell generally parallel to the anode diffusion layer, but with a vapor gap provided between the evaporation pad and the anode diffusion layer. A fuel delivery conduit having at least one injection port is provided through which liquid fuel is delivered from an associated source of highly concentrated fuel into the evaporation pad, at a controlled, adjustable rate. Multiple parallel liquid delivery points can also be provided. In order to ensure uniform delivery of fuel across the across the active area of the anode, one or more dispersion members are placed on the evaporation pad to effectively disperse the fuel laterally around each injection port.

摘要翻译： 提供了具有甲醇蒸汽输送组分或膜的燃料电池系统。 该组件包括蒸发垫。 蒸发垫设置在大致平行于阳极扩散层的燃料电池内，但是在蒸发垫和阳极扩散层之间设置有蒸汽间隙。 提供具有至少一个注入口的燃料输送管道，液体燃料以受控的可调节速率从相关的高浓度燃料源输送到蒸发垫中。 还可以提供多个平行的液体输送点。 为了确保燃料在阳极的有效区域的均匀输送，一个或多个分散构件被放置在蒸发垫上，以有效地将燃料横向分散在每个注入口周围。