Apparatus and methods for sensor-less optimization of methanol concentration in a direct methanol fuel cell system
    31.
    发明授权
    Apparatus and methods for sensor-less optimization of methanol concentration in a direct methanol fuel cell system 有权
    直接甲醇燃料电池系统中无甲醇浓度优化的装置和方法

    公开(公告)号:US06824899B2

    公开(公告)日:2004-11-30

    申请号:US10040502

    申请日:2001-11-09

    IPC分类号: H01M800

    CPC分类号: H01M8/04194 H01M8/04291

    摘要: Apparatus and methods for regulating methanol concentration in a direct methanol fuel cell system without the need for a methanol concentration sensor. One or more operating characteristics of the fuel cell, such as the potential across the load, open circuit potential, potential at the anode proximate to the end of the fuel flow path or short circuit current of the fuel cell, are used to actively control the methanol concentration.

    摘要翻译: 在直接甲醇燃料电池系统中调节甲醇浓度的装置和方法,而不需要甲醇浓度传感器。 燃料电池的一个或多个操作特性,例如负载电位,开路电位,靠近燃料流路端部的阳极电位或燃料电池的短路电流,被用于主动地控制 甲醇浓度。

    Systems and Methods of Securing Immunity to Air CO2 in Alkaline Fuel Cells
    33.
    发明申请
    Systems and Methods of Securing Immunity to Air CO2 in Alkaline Fuel Cells 有权
    确保碱性燃料电池中空气二氧化碳的免疫系统和方法

    公开(公告)号:US20110212370A1

    公开(公告)日:2011-09-01

    申请号:US12862746

    申请日:2010-08-24

    IPC分类号: H01M8/06

    摘要: An air CO2 filtration assembly or system is provided that includes CO2 filters or traps designed and configured with a limited, but high capacity, volume to maximize filtration/absorption of CO2 from an air stream supplied to an alkaline fuel cell to thereby minimize the CO2 level in the air stream fed into the fuel cell cathode. The CO2 filters or traps include at least one thermally regenerative CO2 chemical filter or trap arranged in a tandem configuration with a strongly bonding CO2 chemical filter or trap. The combination of the two types of filters or traps sequentially filter/absorb CO2 from the air stream and reduce the level of CO2 in the air stream fed into the cathode. The air CO2 filtration assembly or system may be used in conjunction with electrochemical purging of the alkaline fuel cell that enables removal of CO2 from the fuel cell by anodic decomposition of accumulated carbonate ions in the fuel cell anode and release of CO2 through the anode exhaust stream.

    摘要翻译: 提供了一种空气CO2过滤组件或系统,其包括设计和配置有限但容量大的二氧化碳过滤器或阱,以最大限度地从供应到碱性燃料电池的空气流中过滤/吸收二氧化碳,从而最小化CO2水平 在进入燃料电池阴极的空气流中。 二氧化碳过滤器或捕集器包括至少一个热再生CO 2化学过滤器或捕集器,其布置成具有强粘结的CO 2化学过滤器或阱的串联配置。 两种类型的过滤器或捕集阱的组合顺序地从空气流中过滤/吸收CO 2并且降低进入阴极的空气流中的CO 2水平。 空气CO 2过滤组件或系统可以与碱性燃料电池的电化学清洗结合使用,其能够通过阳极分解燃料电池阳极中的碳酸根离子并通过阳极排气流释放CO 2从燃料电池中除去CO 2 。

    Conformable fuel cell
    35.
    发明申请
    Conformable fuel cell 失效
    符合要求的燃料电池

    公开(公告)号:US20050196666A1

    公开(公告)日:2005-09-08

    申请号:US10791101

    申请日:2004-03-02

    IPC分类号: H01M4/94 H01M8/02 H01M8/10

    摘要: A conformable fuel cell is provided which includes a basic structure that provides flexibility while providing a high compression along the active surface of the fuel cell's membrane electrode assembly, which can be achieved by an injection-molded frame. A suitable fuel is delivered to the anode aspect of the fuel cell. Effective water management could also be provided by appropriate diffusion layers. The fuel cell can be contour-molded to a desired shape, or can be constructed of an array of flexibly connected individual fuel cells that overall have a curvilinear shape, or can be constructed as a pliable fuel cell that can be incorporated into an application device or an article of clothing.

    摘要翻译: 提供了一种适应性的燃料电池,其包括提供柔性的基本结构,同时沿着燃料电池的膜电极组件的活性表面提供高压缩性,这可以通过注射成型的框架来实现。 合适的燃料被输送到燃料电池的阳极方面。 有效的水管理也可以由适当的扩散层提供。 燃料电池可以被轮廓模制成所需的形状,或者可以由整体上具有曲线形状的柔性连接的单个燃料电池的阵列构成,或者可以被构造为可并入到应用装置中的柔性燃料电池 或一件衣服。

    Metallization of electronic insulators
    36.
    发明授权
    Metallization of electronic insulators 失效
    电子绝缘子金属化

    公开(公告)号:US5368717A

    公开(公告)日:1994-11-29

    申请号:US32959

    申请日:1993-03-17

    IPC分类号: C25D5/56 H05K3/18

    摘要: An electroplated element is formed to include an insulating substrate, a conducting polymer polymerized in situ on the substrate, and a metal layer deposited on the conducting polymer. In one application a circuit board is formed by polymerizing pyrrole on an epoxy-fiberglass substrate in a single step process and then electrodepositing a metal over the resulting polypyrrole polymer. No chemical deposition of the metal is required prior to electroplating and the resulting layer of substrate-polymer-metal has excellent adhesion characteristics. The metal deposition is surprisingly smooth and uniform over the relatively high resistance film of polypyrrole. A continuous manufacturing process is obtained by filtering the solution between successive substrates to remove polymer formed in the solution, by maintaining the solution oxidizing potential within selected limits, and by adding a strong oxidant, such as KMnO.sub.4 at periodic intervals to maintain a low sheet resistivity in the resulting conducting polymer film.

    摘要翻译: 电镀元件形成为包括绝缘基板,在基板上原位聚合的导电聚合物和沉积在导电聚合物上的金属层。 在一个应用中,电路板是通过在环氧树脂 - 玻璃纤维基材上以一步法聚合吡咯然后在所得聚吡咯聚合物上电沉积金属形成的。 在电镀之前不需要金属的化学沉积,并且所得到的基底 - 聚合物 - 金属层具有优异的粘附特性。 金属沉积在聚吡咯的相对高的电阻膜上令人惊讶地平滑和均匀。 通过在连续的底物之间过滤溶液以除去在溶液中形成的聚合物,通过将溶液氧化势保持在选择的范围内,并且通过以周期性间隔加入强氧化剂如KMnO 4以保持低的薄层电阻率来获得连续的制造方法 在所得的导电聚合物膜中。

    Morphology in electrochemically grown conducting polymer films
    37.
    发明授权
    Morphology in electrochemically grown conducting polymer films 失效
    电化学生长导电聚合物膜中的形态

    公开(公告)号:US5108573A

    公开(公告)日:1992-04-28

    申请号:US533551

    申请日:1990-06-05

    IPC分类号: H01B1/12 H01M4/60

    摘要: A conducting polymer film with an improved space filling is formed on a metal electrode surface. A self-assembling monolayer is formed directly on the metal surface where the monolayer has a first functional group that binds to the metal surface and a second chemical group that forms a chemical bonding site for molecules forming the conducting polymer. The conducting polymer is then conventioonally deposited by electrochemical deposition. In one example, a conducting film of polyaniline is formed on a gold electrode surface with an intermediate monolayer of p-aminothiophenol.

    摘要翻译: 在金属电极表面上形成具有改善的空间填充的导电聚合物膜。 直接在金属表面上形成自组装单层,其中单层具有结合金属表面的第一官能团和形成导电聚合物分子的化学键合位点的第二化学基团。 然后通过电化学沉积将导电聚合物固化沉积。 在一个实例中,聚苯胺的导电膜在金电极表面上形成有中间单层对氨基苯硫酚。

    Enzyme electrochemical sensor electrode and method of making it
    38.
    发明授权
    Enzyme electrochemical sensor electrode and method of making it 失效
    ENZYME电化学传感器电极及其制备方法

    公开(公告)号:US5082550A

    公开(公告)日:1992-01-21

    申请号:US448475

    申请日:1989-12-11

    IPC分类号: G01N27/327 C12Q1/00

    CPC分类号: C12Q1/002 Y10S435/817

    摘要: An electrochemical sensor electrode is formed from an electronic conductor coated with a casting solution containing a perfluorosulfonic acid ionomer and a selected enzyme. The selected enzyme catalyzes a reaction between a predetermined substance in a solution and oxygen to form an electrochemically active compound that is detected at the electronic conductor. The resulting perfluorosulfonic acid polymer provides a stable matrix for the enzyme for long lived enzyme activity, wherein only thin coatings are required on the metal conductor. The polymer also advantageously repels interfering substances from contacting the enzyme and contains quantities of oxygen to maintain a sensing capability during conditions of oxygen depletion in the sample. In one particular embodiment, glucose oxidase is mixed with the perfluorosulfonic acid ionomer to form an electrode for glucose detection.

    摘要翻译: 电化学传感器电极由涂覆有含有全氟磺酸离聚物和选定酶的流延溶液的电子导体形成。 所选择的酶催化溶液中的预定物质与氧之间的反应,以形成在电子导体处检测到的电化学活性化合物。 所得的全氟磺酸聚合物为长寿命酶活性的酶提供稳定的基质,其中在金属导体上仅需要薄涂层。 该聚合物还有利地排除干扰物质接触酶,并含有一定量的氧以在样品中的氧耗尽条件下保持感测能力。 在一个具体实施方案中,葡萄糖氧化酶与全氟磺酸离聚物混合以形成用于葡萄糖检测的电极。

    Preventing CO poisoning in fuel cells
    39.
    发明授权
    Preventing CO poisoning in fuel cells 失效
    防止燃料电池中的中毒

    公开(公告)号:US4910099A

    公开(公告)日:1990-03-20

    申请号:US279694

    申请日:1988-12-05

    IPC分类号: H01M8/04

    CPC分类号: H01M8/04089 H01M2300/0082

    摘要: Proton exchange membrane (PEM) fuel cell performance with CO contamination of the H.sub.2 fuel stream is substantially improved by injecting O.sub.2 into the fuel stream ahead of the fuel cell. It is found that a surface reaction occurs even at PEM operating temperatures below about 100.degree. C. to oxidatively remove the CO and restore electrode surface area for the H.sub.2 reaction to generate current. Using an O.sub.2 injection, a suitable fuel stream for a PEM fuel cell can be formed from a methanol source using conventional reforming processes for producing H.sub.2.

    摘要翻译: 质子交换膜(PEM)燃料电池性能与H2燃料流的CO污染通过将O 2喷射到燃料电池前面的燃料流中而显着提高。 发现即使在低于约100℃的PEM操作温度下也发生表面反应,以氧化除去CO并恢复H 2反应的电极表面积以产生电流。 使用O 2注入,可以使用用于生产H 2的常规重整方法从甲醇源形成用于PEM燃料电池的合适的燃料流。