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公开(公告)号：US20080206615A1
公开(公告)日：2008-08-28
申请号：US11677873
申请日：2007-02-22
申请人： Paul Nicotera , Mark Mathias , Chunxin Ji , Steven G. Goebel
发明人： Paul Nicotera , Mark Mathias , Chunxin Ji , Steven G. Goebel
CPC分类号： H01M8/04291 , H01M4/8605 , H01M4/8807 , H01M8/0232 , H01M8/0234 , H01M8/0245 , H01M8/0247 , H01M8/0258 , H01M8/0273 , H01M8/0276 , H01M8/0297 , H01M8/1007 , H01M8/241 , H01M8/2457 , H01M2008/1095
摘要： A diffusion medium for use in a PEM fuel cell comprising a thin perforated layer having variable size and frequency of perforation patterns incorporated into a microporous layer on a first side of a porous substrate layer, wherein the diffusion medium is adapted to improve water management and performance of the fuel cell.
摘要翻译： 一种用于PEM燃料电池的扩散介质，其包括具有可变尺寸和穿孔频率的薄穿孔层，所述穿孔层结合到多孔基底层的第一侧上的微孔层中，其中所述扩散介质适于改善水的管理和性能 的燃料电池。
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2.发明授权公开(公告)号：US08507152B2
公开(公告)日：2013-08-13
申请号：US12718330
申请日：2010-03-05
申请人： Chunxin Ji , Steven G. Goebel , Matthew Dioguardi
发明人： Chunxin Ji , Steven G. Goebel , Matthew Dioguardi
CPC分类号： H01M4/8814 , H01M4/8807 , H01M4/881 , H01M4/8828 , H01M2008/1095
摘要： A method of making a reconstructed electrode having a plurality of nanostructured thin catalytic layers is provided. The method includes combining a donor decal comprising at least one nanostructured thin catalytic layer on a substrate with an acceptor decal comprising a porous substrate and at least one nanostructured thin catalytic layer. The donor decal and acceptor decal are bonded together using a temporary adhesive, and the donor substrate is removed. The temporary adhesive is then removed with appropriate solvents. Catalyst coated proton exchange membranes and catalyst coated diffusion media made from the reconstructed electrode decals having a plurality of nanostructured thin catalytic layers are also described.
摘要翻译： 提供了制造具有多个纳米结构的薄催化层的重建电极的方法。 该方法包括将包含至少一个纳米结构的薄催化剂层的施主贴图与包含多孔底物和至少一个纳米结构的薄催化层的受体贴片组合在一起。 供体贴花和接受体贴花使用临时粘合剂粘合在一起，并且移除供体底物。 然后用合适的溶剂除去临时粘合剂。 还描述了由具有多个纳米结构的薄催化层的重建电极贴片制成的催化剂涂覆的质子交换膜和由催化剂涂覆的扩散介质。
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3.发明申请公开(公告)号：US20100291473A1
公开(公告)日：2010-11-18
申请号：US12718330
申请日：2010-03-05
申请人： Chunxin Ji , Steven G. Goebel , Matthew Dioguardi
发明人： Chunxin Ji , Steven G. Goebel , Matthew Dioguardi
CPC分类号： H01M4/8814 , H01M4/8807 , H01M4/881 , H01M4/8828 , H01M2008/1095
摘要： A method of making a reconstructed electrode having a plurality of nanostructured thin catalytic layers is provided. The method includes combining a donor decal comprising at least one nanostructured thin catalytic layer on a substrate with an acceptor decal comprising a porous substrate and at least one nanostructured thin catalytic layer. The donor decal and acceptor decal are bonded together using a temporary adhesive, and the donor substrate is removed. The temporary adhesive is then removed with appropriate solvents. Catalyst coated proton exchange membranes and catalyst coated diffusion media made from the reconstructed electrode decals having a plurality of nanostructured thin catalytic layers are also described.
摘要翻译： 提供了制造具有多个纳米结构的薄催化层的重建电极的方法。 该方法包括将包含至少一个纳米结构的薄催化剂层的施主贴图与包含多孔底物和至少一个纳米结构的薄催化层的受体贴片组合在一起。 供体贴花和接受体贴花使用临时粘合剂粘合在一起，并且移除供体底物。 然后用合适的溶剂除去临时粘合剂。 还描述了由具有多个纳米结构的薄催化层的重建电极贴片制成的催化剂涂覆的质子交换膜和由催化剂涂覆的扩散介质。
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公开(公告)号：US07749637B2
公开(公告)日：2010-07-06
申请号：US11229909
申请日：2005-09-19
CPC分类号： H01M8/0245 , H01M8/0234 , H01M8/0247 , H01M8/04141 , H01M8/04156 , H01M8/04171 , H01M8/04253 , H01M2008/1095
摘要： A fuel cell including a water blocking layer positioned between anode gas flow channels and a gas diffusion media. The blocking layer prevents water from propagating through the gas diffusion media layer and entering the anode flow channels, while allowing gas from the flow channels to flow through the diffusion media layer to the membrane. A water accumulation channel can be provided around the perimeter of the gas diffusion media layer where blocked water is accumulated, and allowed to expand during cell freezing. A porous capillary wick can be provided in the accumulation channel for wicking water to the inlet end of the flow channels where it is used to humidify the anode gas coming into the fuel cell. The wick can have a tapered configuration so that it has a larger diameter at the gas input end of the flow channels.
摘要翻译： 一种燃料电池，包括位于阳极气体流动通道和气体扩散介质之间的阻水层。 阻挡层防止水通过气体扩散介质层传播并进入阳极流动通道，同时允许来自流动通道的气体流过扩散介质层至膜。 可以在气体扩散介质层的周边周围设置积聚通道，其中堵塞的水被积聚，并允许在细胞冷冻期间膨胀。 可以在积聚通道中提供多孔毛细管芯，用于将水吸收到流动通道的入口端，在那里用于加湿进入燃料电池的阳极气体。 芯可以具有锥形构造，使得其在流动通道的气体输入端处具有较大的直径。
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5.发明授权Diffusion media with continuous micro-porous layers incorporating non-uniformity 有权具有不均匀性的连续微孔层的扩散介质公开(公告)号：US07625661B2
公开(公告)日：2009-12-01
申请号：US11215395
申请日：2005-08-30
申请人： Steven G. Goebel , Chunxin Ji , Jeanette E. O'Hara
发明人： Steven G. Goebel , Chunxin Ji , Jeanette E. O'Hara
CPC分类号： H01M8/023 , H01M8/0245 , H01M8/04291
摘要： A diffusion media and micro-porous media combination for a fuel cell. A diffusion layer is composed of a diffusion media and has a first (electrode) side and an opposite second (flowfield) side, wherein at least one of the first and second sides has a geometric pattern formed therein comprising a multiplicity of mutually spaced apart regions. A micro-porous media fills the multiplicity of regions and a micro-porous layer composed of the micro-porous media is continuously applied to the first surface.
摘要翻译： 用于燃料电池的扩散介质和微孔介质组合。 扩散层由扩散介质组成并具有第一（电极）侧和相对的第二（流场）侧，其中第一和第二侧中的至少一个具有形成在其中的几何图案，其中包括多个相互间隔开的区域 。 微孔介质填充多个区域，并且由微孔介质组成的微孔层连续地施加到第一表面。
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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
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。
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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
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。
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8.发明授权Acrylic fiber bonded carbon fiber paper as gas diffusion media for fuel cell 有权丙烯酸纤维粘结碳纤维纸作为燃料电池的气体扩散介质公开(公告)号：US08343452B2
公开(公告)日：2013-01-01
申请号：US11384706
申请日：2006-03-20
发明人： Chunxin Ji , Gerald J. Fleming , Mark Mathias
CPC分类号： D21H13/50 , D21H13/18 , D21H17/36 , H01M8/0234 , H01M8/0239 , Y02P70/56 , Y10T428/30
摘要： A gas diffusion media for a fuel cell, such as a proton exchange membrane fuel cell, is provided. The gas diffusion media includes carbonizable acrylic pulp fibers instead of conventional phenolic resin as a binder material. The acrylic fibers are mixed with the carbon fiber dispersion during the papermaking step, thus eliminating the phenolic resin impregnation step typically associated with conventional gas diffusion media manufacturing processes. The mat is then cured and carbonized to produce gas diffusion media.
摘要翻译： 提供了用于燃料电池的气体扩散介质，例如质子交换膜燃料电池。 气体扩散介质包括可碳化的丙烯酸纸浆纤维，而不是传统的酚醛树脂作为粘合剂材料。 丙烯酸纤维在造纸步骤期间与碳纤维分散体混合，从而消除通常与常规气体扩散介质制造工艺相关的酚醛树脂浸渍步骤。 然后将垫固化并碳化以产生气体扩散介质。
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公开(公告)号：US20070218344A1
公开(公告)日：2007-09-20
申请号：US11384705
申请日：2006-03-20
申请人： Chunxin Ji , Mark Mathias
发明人： Chunxin Ji , Mark Mathias
CPC分类号： H01M8/0245 , H01M8/04291 , H01M8/1007
摘要： Fuel cells contain diffusion media having vapor-deposited fluorocarbon polymers on a conductive substrate. 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 vapor deposited on the paper to define the hydrophobic areas; hydrophilic areas are those areas uncovered by hydrophobic polymer, or covered by an additionally deposited hydrophilic polymer
摘要翻译： 燃料电池含有在导电基底上具有气相沉积氟碳聚合物的扩散介质。 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。 将诸如氟树脂之类的疏水性聚合物气相沉积在纸上以限定疏水区域; 亲水区域是由疏水性聚合物覆盖的或被额外沉积的亲水性聚合物覆盖的那些区域
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公开(公告)号：US20050233080A1
公开(公告)日：2005-10-20
申请号：US10824032
申请日：2004-04-14
申请人： Chunxin Ji , Michael Schoeneweiss , Mark Mathias , Joerg Roth
发明人： Chunxin Ji , Michael Schoeneweiss , Mark Mathias , Joerg Roth
IPC分类号： B05D1/32 , D21H13/50 , D21H19/20 , D21H19/66 , D21H19/72 , D21H19/84 , H01M4/86 , H01M8/00 , H01M8/10
CPC分类号： H01M8/0239 , D21H13/50 , D21H19/20 , D21H19/66 , D21H19/72 , D21H19/84 , H01M4/8605 , H01M8/0234 , H01M8/0245 , H01M8/1007
摘要： Gas diffusion media for use in fuel cells are provided that contain a pattern of deposited hydrophobic polymer such that less than 100% of the surface of the diffusion media is covered with hydrophobic polymer. The media are made by first wetting a sheet of carbon fiber paper in an aqueous emulsion of the hydrophobic polymer. The wetted sheet is contacted with a pattern member containing one or more openings oriented to correspond to a predetermined or desired pattern of hydrophobic polymer deposition. While still in contact with the pattern member, the sheet is heated or otherwise treated to cause evaporation of the water from the sheet. Evaporation while in contact with the pattern member takes place in such a way that hydrophobic polymer is concentrated in the sheet at the openings of the pattern member by the process of evaporation.
摘要翻译： 提供了用于燃料电池的气体扩散介质，其包含沉积的疏水性聚合物的图案，使得少于100％的扩散介质的表面被疏水聚合物覆盖。 介质通过首先在疏水性聚合物的水乳液中润湿碳纤维纸片而制成。 润湿的片材与包含一个或多个开口的图案构件接触，该开口定向成对应于预定或期望的疏水性聚合物沉积图案。 在仍然与图案构件接触的同时，片材被加热或以其他方式处理以引起水从片材的蒸发。 在与图案构件接触的同时进行蒸发，其方式是通过蒸发过程将疏水性聚合物集中在图案构件的开口处的片材中。
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