公开(公告)号：US06187467B1

公开(公告)日：2001-02-13

申请号：US09222507

申请日：1998-12-29

申请人： Jiujun Zhang ,  Kevin M. Colbow ,  David P. Wilkinson

发明人： Jiujun Zhang ,  Kevin M. Colbow ,  David P. Wilkinson

IPC分类号： H01M486

CPC分类号： H01M4/8817 ,  H01M4/8807 ,  H01M4/8828 ,  H01M8/1004 ,  H01M8/1009 ,  H01M2300/0082 ,  Y02E60/523

摘要： Liquid feed fuel cell performance can be increased by impregnating electrode substrates with a proton conducting ionomer prior to incorporation of the electrocatalyst, and optionally also after application of the electrocatalyst. Ionomer impregnation is particularly effective for direct methanol fuel cell anodes that comprise carbonaceous substrates.

摘要翻译： 液体进料燃料电池性能可以通过在引入电催化剂之前用质子导电离子交联聚合物浸渍电极基质，以及任选地也可以在施加电催化剂之后来提高。 离子聚合物浸渍对于包含碳质底物的直接甲醇燃料电池阳极是特别有效的。

公开(公告)号：US06613464B1

公开(公告)日：2003-09-02

申请号：US09255428

申请日：1999-02-22

申请人： David P. Wilkinson ,  Mark C. Johnson ,  Kevin M. Colbow ,  Stephen A. Campbell

发明人： David P. Wilkinson ,  Mark C. Johnson ,  Kevin M. Colbow ,  Stephen A. Campbell

IPC分类号： H01M800

CPC分类号： H01M4/926 ,  H01M4/86 ,  H01M4/8605 ,  H01M4/8626 ,  H01M4/96 ,  H01M8/0213 ,  H01M8/1004 ,  H01M8/1007 ,  H01M8/1009 ,  H01M2300/0082

摘要： In an electrochemical fuel cell, a sufficient quantity of catalyst, effective for promoting the reaction of reactant supplied to an electrode, is disposed within the volume of the electrode so that a reactant introduced at a first major surface of the electrode is substantially completely reacted upon contacting the second major surface. Crossover of reactant from one electrode to the other electrode through the electrolyte in an electrochemical fuel cell is thereby reduced.

摘要翻译： 在电化学燃料电池中，在电极的体积内设置足够量的促进反应物供应到电极的催化剂，使得在电极的第一主表面上引入的反应基本上完全反应在 接触第二主表面。 因此，电化学燃料电池中通过电解质从一个电极到另一个电极的反应物交叉交叉。

公开(公告)号：USH2241H1

公开(公告)日：2010-06-01

申请号：US11003635

申请日：2004-12-03

申请人： Kevin M Colbow ,  Rudolf J Coertze ,  Andrew J Henderson ,  Bien H Chiem ,  Robert H Artibise ,  Seungsoo Jung

发明人： Kevin M Colbow ,  Rudolf J Coertze ,  Andrew J Henderson ,  Bien H Chiem ,  Robert H Artibise ,  Seungsoo Jung

IPC分类号： H01M4/00

摘要： A fuel cell electric power generation system using air as both a coolant and an oxidant comprises an electric power generation subsystem, an air filter subsystem, a power and control electronics unit (PEU) subsystem comprising a DC/DC converter, and an air fan subsystem. The subsystems are arranged such that air circulation through the system is improved and the risk of moisture damage to sensitive PEU components is reduced. In one embodiment, the air filter subsystem is positioned ahead of the PEU subsystem, which is positioned ahead of the power generation subsystem, which is positioned ahead of the air fan subsystem in the direction of air flow, such that air is drawn by the air fan subsystem through the air filter subsystem, over the PEU subsystem, and through the electric power generation subsystem providing filtered air to cool the PEU prior to entering the fuel cell stack to provide oxygen for the electrochemical reaction.

公开(公告)号：US06527943B1

公开(公告)日：2003-03-04

申请号：US09435977

申请日：1999-11-08

申请人： Jiujun Zhang ,  Kevin M. Colbow ,  David P. Wilkinson ,  Jens Müller

发明人： Jiujun Zhang ,  Kevin M. Colbow ,  David P. Wilkinson ,  Jens Müller

IPC分类号： G01N27406

CPC分类号： G01N27/4045 ,  H01M8/04194

摘要： The measuring range of a fuel cell based concentration sensor can be extended by decreasing the load across the fuel cell terminals and by increasing the amount of oxidant supplied to the fuel cell. In this way, such a sensor avoids saturation, for example, when measuring methanol concentrations from 0 M to over 4 M in liquid aqueous solution. Such a sensor is suitable for use in measuring fuel concentrations in the recirculating fuel stream of certain fuel cell stacks (for example, direct methanol fuel cell stacks).

摘要翻译： 基于燃料电池的浓度传感器的测量范围可以通过减少燃料电池端子两端的负载和增加供给到燃料电池的氧化剂的量来延长。 以这种方式，这种传感器避免饱和，例如在液体水溶液中测量从0M至超过4M的甲醇浓度时。 这种传感器适用于测量某些燃料电池堆（例如直接甲醇燃料电池堆）的再循环燃料流中的燃料浓度。

公开(公告)号：US06410175B1

公开(公告)日：2002-06-25

申请号：US09191049

申请日：1998-11-12

申请人： Werner Tillmetz ,  David P. Wilkinson ,  Kevin M. Colbow ,  Jean St.-Pierre

发明人： Werner Tillmetz ,  David P. Wilkinson ,  Kevin M. Colbow ,  Jean St.-Pierre

IPC分类号： H01M0800

CPC分类号： H01M8/1009 ,  H01M8/04186 ,  H01M8/04223 ,  H01M8/04302 ,  H01M8/241 ,  H01M2300/0082

摘要： A method of commencing operation of a fuel cell system which includes a fuel reformer is provided. During a start-up period, the same fuel which is used in the feedstock to the reformer is directed to at least a portion of the fuel cells in the system. These fuel cells provide output power by direct oxidation of the fuel, at least until the reformer is operational, producing a hydrogen-containing gas stream suitable for the fuel cells. Thus, useful output power can be obtained from the system without the delay typically associated with start-up of the reformer.

摘要翻译： 提供了包括燃料重整器的燃料电池系统的开始操作的方法。 在启动期间，用于重整器的原料中的相同燃料被引导到系统中的至少一部分燃料电池。 这些燃料电池通过燃料的直接氧化提供输出功率，至少直到重整器可操作，产生适用于燃料电池的含氢气流。 因此，可以从系统获得有用的输出功率，而没有通常与重整器启动相关的延迟。

公开(公告)号：US5874182A

公开(公告)日：1999-02-23

申请号：US939673

申请日：1997-09-29

申请人： David P. Wilkinson ,  Mark C. Johnson ,  Kevin M. Colbow ,  Stephen A. Campbell

发明人： David P. Wilkinson ,  Mark C. Johnson ,  Kevin M. Colbow ,  Stephen A. Campbell

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

CPC分类号： H01M4/926 ,  H01M4/86 ,  H01M4/8605 ,  H01M4/8626 ,  H01M4/96 ,  H01M8/0213 ,  H01M8/1007 ,  H01M8/1009 ,  H01M2300/0082 ,  H01M8/1004

摘要： In an electrochemical fuel cell, a sufficient quantity of catalyst, effective for promoting the reaction of reactant supplied to an electrode, is disposed within the volume of the electrode so that a reactant introduced at a first major surface of the electrode is substantially completely reacted upon contacting the second major surface. Crossover of reactant from one electrode to the other electrode through the electrolyte in an electrochemical fuel cell is thereby reduced.

公开(公告)号：US20090130500A1

公开(公告)日：2009-05-21

申请号：US12119676

申请日：2008-05-13

申请人： Boguslaw M. Wozniczka ,  Alfred N.F. Wong ,  Kevin M. Colbow

发明人： Boguslaw M. Wozniczka ,  Alfred N.F. Wong ,  Kevin M. Colbow

IPC分类号： H01M8/00 ,  H01M8/02

CPC分类号： H01M8/04753 ,  H01M8/0267 ,  H01M8/04089 ,  H01M8/04731 ,  H01M8/0491 ,  H01M8/2404 ,  H01M8/242 ,  H01M2008/1095

摘要： A method of operating a low pressure drop fuel cell stack comprising a plurality of low pressure drop fuel cells wherein during low pressure and low power operation, a heat transfer rate of a cathode flow field plate of each fuel cell is greater than a heat transfer rate of an anode flow field plate of the same fuel cell. Thus, a temperature gradient is created between an anode electrode and a cathode electrode of each fuel cell, as well as reactant fluids in at least one anode flow field and at least one cathode flow field of the same fuel cell.

摘要翻译： 一种操作包括多个低压降燃料电池的低压降燃料电池堆的方法，其中在低压和低功率运行期间，每个燃料电池的阴极流场板的传热速率大于传热速率 的相同燃料电池的阳极流场板。 因此，在每个燃料电池的阳极电极和阴极电极之间产生温度梯度，以及在同一燃料电池的至少一个阳极流场和至少一个阴极流场中的反应物流体。

公开(公告)号：US06777116B1

公开(公告)日：2004-08-17

申请号：US09256386

申请日：1999-02-24

申请人： Jens Müller ,  Peter Urban ,  Regina Wezel ,  Kevin M. Colbow ,  Jiujun Zhang

发明人： Jens Müller ,  Peter Urban ,  Regina Wezel ,  Kevin M. Colbow ,  Jiujun Zhang

IPC分类号： H01M804

CPC分类号： H01M8/1009 ,  H01M8/04186 ,  H01M8/04223 ,  H01M8/241 ,  H01M2300/0082

摘要： Low temperature fuel cells, e.g. solid polymer fuel cells, can operate directly on a fuel comprising dimethyl ether with dimethyl ether being oxidized at the fuel cell anode. Being highly soluble in water, dimethyl ether can be supplied as a liquid aqueous fuel solution. As a fuel, dimethyl ether provides similar power characteristics as methanol but typically with a greater Faradaic efficiency in liquid feed solid polymer fuel cells.

摘要翻译： 低温燃料电池，例如 固体聚合物燃料电池可以直接在包含二甲醚的燃料上直接操作，其中二甲醚在燃料电池阳极处被氧化。 高溶于水的二甲醚可作为液体水性燃料溶液提供。 作为燃料，二甲醚提供与甲醇相似的功率特性，但通常在液体进料固体聚合物燃料电池中具有更大的法拉第效率。

公开(公告)号：US06698278B2

公开(公告)日：2004-03-02

申请号：US10033758

申请日：2001-12-19

申请人： Jiujun Zhang ,  Kevin M. Colbow ,  Alfred Wong ,  Bruce Lin

发明人： Jiujun Zhang ,  Kevin M. Colbow ,  Alfred Wong ,  Bruce Lin

IPC分类号： G01N2500

CPC分类号： H01M8/04194

摘要： In an operating liquid feed fuel cell system, fuel concentration in the fuel stream can be calculated as a function of the observed current, the temperature of the fuel stream entering the fuel cell stack, and the temperature of the fuel cell stack itself, thereby eliminating the need for a separate sensor. Typically, methanol will be used as the fuel and the liquid feed fuel cell system will thus be a direct methanol fuel cell system.

摘要翻译： 在操作的液体进料燃料电池系统中，燃料流中的燃料浓度可以根据观察到的电流，进入燃料电池堆的燃料流的温度和燃料电池堆本身的温度来计算，由此消除 需要一个单独的传感器。 通常，将使用甲醇作为燃料，因此液体进料燃料电池系统将是直接的甲醇燃料电池系统。

公开(公告)号：US6153323A

公开(公告)日：2000-11-28

申请号：US173845

申请日：1998-10-16

申请人： Kevin M. Colbow ,  Jiujun Zhang ,  David P. Wilkinson

发明人： Kevin M. Colbow ,  Jiujun Zhang ,  David P. Wilkinson

IPC分类号： H01M4/88 ,  H01M8/10 ,  H01M8/00

CPC分类号： H01M4/8817 ,  H01M4/8807 ,  H01M4/8828 ,  H01M8/1009 ,  H01M2300/0082 ,  H01M8/1004 ,  Y02E60/523

摘要： Fuel cell performance in liquid feed fuel cells with an electrode comprising a carbonaceous substrate and an electrocatalyst can be increased by oxidizing the carbon substrate, particularly by electrochemical methods in acidic aqueous solution, prior to incorporation of the electrocatalyst. The treated substrate may thereafter be advantageously impregnated with a proton conducting ionomer to prevent excessive penetration of the applied catalyst into the substrate. The treatment method is particularly effective for direct methanol fuel cell anodes.

摘要翻译： 在含有碳质基质和电催化剂的电极的液体进料燃料电池中的燃料电池性能可以通过在引入电催化剂之前，特别是通过电化学方法在酸性水溶液中氧化碳底物来提高。 此后处理的基材可有利地用质子导电离聚物浸渍，以防止所施加的催化剂过度渗透到基材中。 该处理方法对直接甲醇燃料电池阳极特别有效。