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    Diffusion Media, Fuel Cells, and Fuel Cell Powered Systems
    1.
    发明申请
    Diffusion Media, Fuel Cells, and Fuel Cell Powered Systems 有权
    扩散介质，燃料电池和燃料电池供电系统

    公开(公告)号：US20110070524A1

    公开(公告)日：2011-03-24

    申请号：US12951672

    申请日：2010-11-22

    申请人： Tao Xie ,  Chunxin Ji ,  Yang-Tse Cheng

    发明人： Tao Xie ,  Chunxin Ji ,  Yang-Tse Cheng

    IPC分类号： H01M8/10

    CPC分类号： H01M8/0245 ,  H01M8/0234 ,  H01M8/0239 ,  H01M2008/1095 ,  Y02E60/50 ,  Y10T428/249953

    摘要： In at least certain embodiments, the present invention provides a diffusion media and fuel cells and systems employing the diffusion media. In at least one embodiment, the diffusion media comprises a porous matrix having an outer surface and a hydrophilic polymeric coating on at least a portion of the porous matrix with the hydrophilic coating comprising the cured product of a formulation comprising a hydrophilic monomer.

    摘要翻译： 在至少某些实施方案中，本发明提供了扩散介质和使用扩散介质的燃料电池和系统。 在至少一个实施方案中，扩散介质包括多孔基质，其具有在多孔基质的至少一部分上的外表面和亲水性聚合物涂层，亲水涂层包含包含亲水单体的制剂的固化产物。

    Diffusion media, fuel cells, and fuel cell powered systems
    3.
    发明申请
    Diffusion media, fuel cells, and fuel cell powered systems 审中-公开
    扩散介质，燃料电池和燃料电池供电系统

    公开(公告)号：US20060240312A1

    公开(公告)日：2006-10-26

    申请号：US11113503

    申请日：2005-04-25

    申请人： Tao Xie ,  Chunxin Ji ,  Yang-Tse Cheng

    发明人： Tao Xie ,  Chunxin Ji ,  Yang-Tse Cheng

    IPC分类号： H01M4/94 ,  H01M4/96 ,  B05D5/12 ,  H01M4/88

    CPC分类号： H01M8/0245 ,  H01M8/0234 ,  H01M8/0239 ,  H01M2008/1095 ,  Y02E60/50 ,  Y10T428/249953

    摘要： In at least certain embodiments, the present invention provides a diffusion media and fuel cells and systems employing the diffusion media. In at least one embodiment, the diffusion media comprises a porous matrix having an outer surface and a hydrophilic polymeric coating on at least a portion of the porous matrix with the hydrophilic coating comprising the cured product of a formulation comprising a hydrophilic monomer.

    摘要翻译： 在至少某些实施方案中，本发明提供了扩散介质和使用扩散介质的燃料电池和系统。 在至少一个实施方案中，扩散介质包括多孔基质，其具有在多孔基质的至少一部分上的外表面和亲水性聚合物涂层，亲水涂层包含包含亲水单体的制剂的固化产物。

    FABRICATION OF CATALYST COATED DIFFUSION MEDIA LAYERS CONTAINING NANOSTRUCTURED THIN CATALYTIC LAYERS
    4.
    发明申请
    FABRICATION OF CATALYST COATED DIFFUSION MEDIA LAYERS CONTAINING NANOSTRUCTURED THIN CATALYTIC LAYERS 有权
    含有纳米结构薄层催化层的催化剂涂层扩散介质层的制备

    公开(公告)号：US20100291467A1

    公开(公告)日：2010-11-18

    申请号：US12718306

    申请日：2010-03-05

    申请人： Chunxin Ji ,  Matthew Dioguardi

    发明人： Chunxin Ji ,  Matthew Dioguardi

    IPC分类号： B01J31/06 ,  H01M4/86

    CPC分类号： H01M4/8807 ,  B82Y30/00 ,  H01M4/8605 ,  H01M4/8814 ,  H01M4/8817 ,  H01M4/8878 ,  H01M4/8892 ,  H01M2008/1095

    摘要： A method of transferring nanostructured thin catalytic layers to a gas diffusion layer and thus making a catalyst coated diffusion media is described. The method includes treating the gas diffusion layer with a temporary adhesive to temporarily increase the adhesion strength within the microporous layer and to carbon fiber paper substrate, transferring the nanostructured thin catalytic layer to the microporous side of a gas diffusion media layer. The nanostructured thin catalytic layer can then be further processed, including adding additional components or layers to the nanostructured thin catalytic layer on the gas diffusion media layer. Preparation of catalyst coated diffusion media and a catalyst coated diffusion media based membrane electrode assembly (MEA) are also described.

    摘要翻译： 描述了将纳米结构的薄催化层转移到气体扩散层并因此制备催化剂涂覆的扩散介质的方法。 该方法包括使用临时粘合剂处理气体扩散层，以暂时增加微孔层内的粘合强度和碳纤维纸基材，将纳米结构的薄催化层转移到气体扩散介质层的微孔侧。 然后可以进一步处理纳米结构的薄催化层，包括向气体扩散介质层上的纳米结构的薄催化剂层添加附加的组分或层。 还描述了制备催化剂涂覆的扩散介质和基于催化剂的扩散介质的膜电极组件（MEA）。

    Diffusion media with microporous layer
    6.
    发明申请
    Diffusion media with microporous layer 有权
    扩散介质与微孔层

    公开(公告)号：US20060046926A1

    公开(公告)日：2006-03-02

    申请号：US10925853

    申请日：2004-08-25

    申请人： Chunxin Ji ,  Jeanette O'Hara ,  Mark Mathias

    发明人： Chunxin Ji ,  Jeanette O'Hara ,  Mark Mathias

    IPC分类号： H01M4/88 ,  B05D5/12 ,  H01M4/96 ,  H01M4/94

    CPC分类号： H01M4/8657 ,  H01M4/0471 ,  H01M4/8605 ,  H01M4/8817 ,  H01M8/0234

    摘要： Specially prepared gas diffusion media improve the performance of PEM fuel cells. The media are made by first dipping an electrically conductive porous material such as carbon fiber paper into a suspension of hydrophobic polymer and drying the paper to create a desired deposition pattern of hydrophobic polymer on the substrate. Then a paste containing a fluorocarbon polymer and carbon particles is applied to a desired side of the substrate, and thereafter the paste and hydrophobic polymer are sintered together at high temperature on the paper. In particular, nonionic surfactants remain on the carbon fiber paper after the initial hydrophobic polymer is applied to the electrically conductive porous material. When the paste is coated on the dried paper, the paste is in contact with a hydrophilic surface.

    摘要翻译： 专门制备的气体扩散介质提高了PEM燃料电池的性能。 介质通过首先将诸如碳纤维纸的导电多孔材料浸渍到疏水性聚合物的悬浮液中并干燥纸以在基材上产生所需的疏水性聚合物沉积图案来制备。 然后将含有氟碳聚合物和碳颗粒的糊剂涂覆到基材的期望侧，然后将该糊状物和疏水性聚合物在高温下烧结在纸上。 特别地，在将初始疏水性聚合物施加到导电多孔材料之后，非离子表面活性剂残留在碳纤维纸上。 当糊料涂布在干燥的纸上时，糊料与亲水性表面接触。

    Control of polymer surface distribution on diffusion media for improved fuel cell performance
    7.
    发明申请
    Control of polymer surface distribution on diffusion media for improved fuel cell performance 有权
    控制扩散介质上聚合物表面分布，提高燃料电池性能

    公开(公告)号：US20050084742A1

    公开(公告)日：2005-04-21

    申请号：US10924317

    申请日：2004-08-23

    申请人： Anastasios Angelopoulos ,  Chunxin Ji ,  Mark Mathias

    发明人： Anastasios Angelopoulos ,  Chunxin Ji ,  Mark Mathias

    IPC分类号： B05D5/12 ,  B32B9/00 ,  H01M4/88 ,  H01M4/94 ,  H01M4/96 ,  H01M8/02 ,  H01M8/10

    CPC分类号： H01M8/0202 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0245 ,  H01M2008/1095 ,  Y02P70/56 ,  Y10T428/30

    摘要： Favorable performance of diffusion media in fuel cells has found to be correlated to a parameter (the C/F ratio) that relates to a spatial and thickness distribution of the hydrophobic fluoropolymer on the carbon fiber substrate structure of the medium. Suitable diffusion media may be chosen from among commercially coated diffusion media by measuring the C/F ratio by means of energy dispersive spectroscopy, and choosing the diffusion media if the value of the C/F ratio is within the preferred range. Alternatively, the diffusion media may be manufactured with an improved process that consistently yields values of C/F ratio in the desired range.

    摘要翻译： 发现燃料电池中扩散介质的有利性能与涉及介质的碳纤维衬底结构上的疏水性含氟聚合物的空间和厚度分布的参数（C / F比）相关。 合适的扩散介质可以通过用能量色散光谱法测量C / F比例从市售的扩散介质中选择，如果C / F比值在优选的范围内，则选择扩散介质。 或者，扩散介质可以用改进的方法制造，其一致地产生所需范围内C / F比的值。

    Electrode containing nanostructured thin catalytic layers and method of making
    8.
    发明授权
    Electrode containing nanostructured thin catalytic layers and method of making 有权
    含有纳米结构薄催化层的电极及其制备方法

    公开(公告)号：US08802329B2

    公开(公告)日：2014-08-12

    申请号：US12465913

    申请日：2009-05-14

    申请人： Chunxin Ji ,  Matthew Dioguardi

    发明人： Chunxin Ji ,  Matthew Dioguardi

    IPC分类号： H01M4/02 ,  H01M4/36 ,  H01M4/62 ,  H01M8/00

    CPC分类号： H01M4/881 ,  H01M4/8807 ,  H01M4/8814 ,  H01M4/8828 ,  H01M8/1004 ,  H01M2008/1095 ,  Y02P70/56

    摘要： A method of transferring a nanostructured thin catalytic layer from its carrying substrate to a porous transfer substrate and further processing and restructuring the nanostructured thin catalytic layer on the porous transfer substrate is provided. The method includes transferring the nanostructured catalytic layer from its carrying substrate to a transfer substrate. The nanostructured catalytic layer then is processed and reconstructed, including removing the residual materials and adding additional components or layers to the nanostructured catalytic layer, on the transfer substrate. Methods of fabricating catalyst coated membranes with the reconstructed electrode including the nanostructured thin catalytic layer, reconstructed electrode decals, and catalyst coated proton exchange membranes are also described.

    摘要翻译： 提供将纳米结构的薄催化剂层从其承载基底转移到多孔转移基底并进一步处理和重组多孔转移基底上的纳米结构的薄催化层的方法。 该方法包括将纳米结构催化剂层从其承载基底转移到转移基底。 然后对纳米结构催化剂层进行处理和重建，包括在转移基板上除去残留的材料并向纳米结构的催化剂层添加额外的组分或层。 还描述了制备具有包括纳米结构薄催化层，重建电极贴花和催化剂涂覆的质子交换膜的重建电极的催化剂涂覆膜的方法。

    Diffusion media with hydrophobic and hydrophilic properties
    10.
    发明授权
    Diffusion media with hydrophobic and hydrophilic properties 有权
    具疏水性和亲水性的扩散介质

    公开(公告)号：US08241818B2

    公开(公告)日：2012-08-14

    申请号：US10913860

    申请日：2004-08-06

    申请人： Chunxin Ji

    发明人： Chunxin Ji

    IPC分类号： H01M4/02

    CPC分类号： H01M8/0234 ,  H01M8/0239 ,  H01M8/0245 ,  H01M8/04164 ,  H01M8/04291 ,  H01M2008/1095

    摘要： A diffusion medium for use in a PEM fuel cell contains hydrophobic and hydrophilic areas for improved water management. A hydrophobic polymer such as a fluororesin is deposited on the paper to define the hydrophobic areas, and an electroconductive polymer such as polyaniline or polypyrrole is deposited on the papers defining the hydrophilic areas. In various embodiments, a matrix of hydrophobic and hydrophilic areas on the carbon fiber based diffusion media is created by electropolymerization of a hydrophilic polymer onto a diffusion medium which has been previously coated with a hydrophobic polymer such as a fluorocarbon polymer. When an aqueous solution containing monomers for electropolymerization is contacted with a fluorocarbon coated diffusion medium, the hydrophilic polymer will be preferentially deposited on areas of the carbon fiber based diffusion medium that are not covered by the fluorocarbons.

    摘要翻译： 用于PEM燃料电池的扩散介质包含用于改善水管理的疏水和亲水区域。 疏水性聚合物如氟树脂沉积在纸上以限定疏水区域，导电聚合物如聚苯胺或聚吡咯沉积在限定亲水区域的纸上。 在各种实施方案中，基于碳纤维的扩散介质上的疏水和亲水区域的基质通过将亲水性聚合物电聚合到预先用疏水性聚合物如氟碳聚合物涂覆的扩散介质上而产生。 当含有用于电聚合的单体的水溶液与涂有碳氟化合物的扩散介质接触时，亲水性聚合物将优先沉积在未被碳氟化合物覆盖的碳纤维基扩散介质的区域上。