公开(公告)号：US20100291467A1

公开(公告)日：2010-11-18

申请号：US12718306

申请日：2010-03-05

Applicant: Chunxin Ji ,  Matthew Dioguardi

Inventor： Chunxin Ji ,  Matthew Dioguardi

IPC: B01J31/06 ,  H01M4/86

CPC classification number: H01M4/8807 ,  B82Y30/00 ,  H01M4/8605 ,  H01M4/8814 ,  H01M4/8817 ,  H01M4/8878 ,  H01M4/8892 ,  H01M2008/1095

Abstract: 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.

Abstract translation: 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）。

公开(公告)号：US20080206615A1

公开(公告)日：2008-08-28

申请号：US11677873

申请日：2007-02-22

Applicant: Paul Nicotera ,  Mark Mathias ,  Chunxin Ji ,  Steven G. Goebel

Inventor： Paul Nicotera ,  Mark Mathias ,  Chunxin Ji ,  Steven G. Goebel

IPC: H01M8/10 ,  B05D3/02

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20060046926A1

公开(公告)日：2006-03-02

申请号：US10925853

申请日：2004-08-25

Applicant: Chunxin Ji ,  Jeanette O'Hara ,  Mark Mathias

Inventor： Chunxin Ji ,  Jeanette O'Hara ,  Mark Mathias

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

CPC classification number: H01M4/8657 ,  H01M4/0471 ,  H01M4/8605 ,  H01M4/8817 ,  H01M8/0234

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20050084742A1

公开(公告)日：2005-04-21

申请号：US10924317

申请日：2004-08-23

Applicant: Anastasios Angelopoulos ,  Chunxin Ji ,  Mark Mathias

Inventor： Anastasios Angelopoulos ,  Chunxin Ji ,  Mark Mathias

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

CPC classification number: H01M8/0202 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0245 ,  H01M2008/1095 ,  Y02P70/56 ,  Y10T428/30

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08802329B2

公开(公告)日：2014-08-12

申请号：US12465913

申请日：2009-05-14

Applicant: Chunxin Ji ,  Matthew Dioguardi

Inventor： Chunxin Ji ,  Matthew Dioguardi

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

CPC classification number: H01M4/881 ,  H01M4/8807 ,  H01M4/8814 ,  H01M4/8828 ,  H01M8/1004 ,  H01M2008/1095 ,  Y02P70/56

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08343452B2

公开(公告)日：2013-01-01

申请号：US11384706

申请日：2006-03-20

Applicant: Chunxin Ji ,  Gerald J. Fleming ,  Margaret Fleming, legal representative ,  Mark Mathias

Inventor： Chunxin Ji ,  Gerald J. Fleming ,  Mark Mathias

IPC: H01M4/86 ,  H01M4/88 ,  H01M4/96 ,  H01M8/02 ,  H01M8/10

CPC classification number: D21H13/50 ,  D21H13/18 ,  D21H17/36 ,  H01M8/0234 ,  H01M8/0239 ,  Y02P70/56 ,  Y10T428/30

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08241818B2

公开(公告)日：2012-08-14

申请号：US10913860

申请日：2004-08-06

Applicant: Chunxin Ji

Inventor： Chunxin Ji

IPC: H01M4/02

CPC classification number: H01M8/0234 ,  H01M8/0239 ,  H01M8/0245 ,  H01M8/04164 ,  H01M8/04291 ,  H01M2008/1095

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20110294037A1

公开(公告)日：2011-12-01

申请号：US12788915

申请日：2010-05-27

Applicant: Chunxin Ji ,  Matthew Dioguardi ,  Sumeet Bhargava

Inventor： Chunxin Ji ,  Matthew Dioguardi ,  Sumeet Bhargava

IPC: H01M8/10 ,  H01M4/02

CPC classification number: H01M4/881 ,  H01M4/8814 ,  H01M4/92 ,  H01M8/1004 ,  Y02P70/56

Abstract: A method of making an electrode is provided. The method includes providing an electrocatalyst decal comprising a carrying substrate having a nanostructured thin catalytic layer thereon; providing a transfer substrate with an adjacent adhesive layer; adhering the nanostructured thin catalytic layer adjacent to the adhesive layer to form a composite structure; removing the carrying substrate from the composite structure; and removing the transfer substrate from the composite structure to form the stand-alone nanostructured thin catalytic film comprising the adhesive layer with the nanostructured thin catalytic layer adhered thereto. A stand alone nanostructured thin catalytic film and methods of constructing electrodes with the stand alone nanostructured thin catalytic films are also described.

Abstract translation: 提供了制造电极的方法。 该方法包括提供一种电催化剂贴花，其中包括在其上具有纳米结构的薄催化剂层的承载基材; 提供具有相邻粘合剂层的转移基板; 将纳米结构的薄催化层附着在粘合剂层上以形成复合结构; 从复合结构中去除承载基底; 以及从复合结构中去除转印衬底以形成独立的纳米结构的薄催化膜，该薄膜包括粘附有纳米结构的薄催化层的粘合剂层。 还描述了独立的纳米结构的薄催化膜和用独立的纳米结构的薄催化膜构建电极的方法。

公开(公告)号：US20100129534A1

公开(公告)日：2010-05-27

申请号：US12692312

申请日：2010-01-22

Applicant: Chunxin JI ,  Vinod Kumar

Inventor： Chunxin JI ,  Vinod Kumar

IPC: H01M4/88

CPC classification number: H01M8/04291 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0245 ,  H01M2250/20 ,  Y02E60/50 ,  Y02P70/56 ,  Y02T90/32

Abstract: Diffusion media for use in PEM fuel cells are provided with silicone coatings. The media are made of a porous electroconductive substrate, a first hydrophobic fluorocarbon polymer coating adhered to the substrate, and a second coating comprising a hydrophobic silicone polymer adhered to the substrate. The substrate is preferably a carbon fiber paper, the hydrophobic fluorocarbon polymer is PTFE or similar polymer, and the silicone is moisture curable.

Abstract translation: 用于PEM燃料电池的扩散介质提供有硅酮涂层。 介质由多孔导电基底，粘附到基底上的第一疏水性碳氟聚合物涂层和第二涂层构成，第二涂层包含粘附到基底上的疏水性硅氧烷聚合物。 基材优选为碳纤维纸，疏水性氟碳聚合物为PTFE或类似聚合物，并且硅氧烷是可湿固化的。

公开(公告)号：US20090148726A1

公开(公告)日：2009-06-11

申请号：US11952491

申请日：2007-12-07

Applicant: Chunxin Ji ,  Jeanette E. Owejan

Inventor： Chunxin Ji ,  Jeanette E. Owejan

IPC: H01M8/02 ,  B05D1/00

CPC classification number: H01M8/0234 ,  H01M8/0239 ,  H01M8/0241

Abstract: A gas diffusion layer for a fuel cell is described. The gas diffusion layer includes a carbon fiber mat having a substantially open structure. Bloomed fibrillated acrylic pulp is added into a microporous layer ink. Alternatively, the bloomed fibrillated acrylic pulp can first be disposed on the carbon fiber mat, with the microporous layer ink added thereafter. When the microporous layer ink/bloomed fibrillated acrylic pulp mixture is coated on the carbon fiber mat, the ink penetrates through the open substrate, and is locked into place by the bloomed acrylic pulp fibers. This allows for a buildup of microporous layer ink on top of the substrate for added thickness when the bloomed fibrillated acrylic pulp sits on top of the mat.

Abstract translation: 对燃料电池用气体扩散层进行说明。 气体扩散层包括具有基本上开放结构的碳纤维垫。 将膨胀的原纤化丙烯酸纸浆加入到微孔层油墨中。 或者，将开花的原纤化丙烯酸纸浆首先设置在碳纤维垫上，然后再加入微孔层油墨。 当微孔层油墨/开花的原纤化丙烯酸浆纸混合物涂覆在碳纤维垫上时，油墨渗透通过开放的基材，并被开花的丙烯酸纸浆纤维锁定就位。 这使得当开花的原纤化丙烯酸浆料位于垫的顶部时，可以在基材的顶部上积累微孔层油墨以增加厚度。