利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

54 条记录 (耗时 0.024 秒)

    Hydrogen storage alloys having a high porosity surface layer
    1.
    发明授权
    Hydrogen storage alloys having a high porosity surface layer 有权
    具有高孔隙率表面层的储氢合金

    公开(公告)号：US06830725B2

    公开(公告)日：2004-12-14

    申请号：US10405008

    申请日：2003-04-01

    申请人： Michael A. Fetcenko ,  Stanford R. Ovshinsky ,  Kwo Young ,  Benjamin Reichman ,  Taihei Ouchi ,  John Koch ,  William Mays

    发明人： Michael A. Fetcenko ,  Stanford R. Ovshinsky ,  Kwo Young ,  Benjamin Reichman ,  Taihei Ouchi ,  John Koch ,  William Mays

    IPC分类号： C22C3000

    CPC分类号： H01M4/383 ,  H01M10/345 ,  Y02E60/324 ,  Y10S420/90

    摘要： Electrochemical and thermal hydrogen storage alloy compositions that provide superior performance, including an electrochemical hydrogen storage alloy that provides superior low temperature discharge characteristics. The alloy compositions include microstructures in the interface region that are highly porous and that include catalytic metallic particles. The microstructures include a large volume fraction of voids having spherical or channel-like shapes and are sufficiently open structurally to facilitate greater mobility of reactive species within the microstructure and in the vicinity of catalytic metallic particles. Greater accessibility to reactive sites accordingly results. The greater mobility of reactive species and/or the greater density of catalytic particles lead to faster kinetics and improved performance (e.g. higher power), especially at low operating temperatures. The microstructures may be formed through inclusion of a microstructure tuning element in the alloy composition, through control of processing conditions and/or through inclusion of etching steps in the post-formation processing of hydrogen storage alloys.

    摘要翻译： 提供优异性能的电化学和热储氢合金组合物，包括提供优异的低温放电特性的电化学储氢合金。 合金组合物包括界面区域中的高度多孔的微结构，并且包括催化金属颗粒。 微结构包括具有球形或通道状形状的大体积分数的空隙，并且在结构上足够开放以促进反应性物质在微结构内和催化金属颗粒附近的更大迁移率。 因此可以更好地获得反应性网站。 活性物质的较大迁移率和/或更大密度的催化剂颗粒导致更快的动力学和改进的性能（例如更高的功率），特别是在低的操作温度下。 可以通过在合金组合物中包含微结构调谐元件，通过控制加工条件和/或通过在储氢合金的后形成处理中包括蚀刻步骤来形成微观结构。

    Hydrogen storage alloys having improved cycle life and low temperature operating characteristics
    4.
    发明授权
    Hydrogen storage alloys having improved cycle life and low temperature operating characteristics 有权
    具有改善循环寿命和低温操作特性的储氢合金

    公开(公告)号：US07393500B2

    公开(公告)日：2008-07-01

    申请号：US10817267

    申请日：2004-04-02

    申请人： Michael A. Fetcenko ,  Kwo Young ,  Stanford R. Ovshinsky ,  Taihei Ouchi

    发明人： Michael A. Fetcenko ,  Kwo Young ,  Stanford R. Ovshinsky ,  Taihei Ouchi

    IPC分类号： C22C30/00 ,  H01M4/38

    CPC分类号： H01M4/383 ,  H01M10/345 ,  Y02E60/324 ,  Y10S420/90

    摘要： Electrochemical and gas phase hydrogen storage alloy compositions that provide superior performance, especially at low temperature, and excellent cycle life characteristics. The alloys of this invention are AB5 type alloys that include a cycle life enhancement element and a low Co concentration. The preferred cycle life enhancement elements include Zr and Si. The cycle life enhancement elements increase the cycle life of the instant alloys by reducing the pulverization of alloy particles upon repeated cycles of charging-discharging or hydriding-dehydriding. The alloys are characterized by low hysteresis on cycling, where hysteresis is measured in terms of mass concentration difference, a parameter related to the activation energy associated with the incorporation of hydrogen into the alloy. The instant alloys are designed to have a low activation energy for hydrogen incorporation and as a result, provide low hysteresis and a more uniform concentration of absorbed hydrogen within the material. As a result, differential lattice expansion effects associated with the absorption of hydrogen are minimized and the tendency for particle pulverization on cycling is minimized. Alloys having a low Co concentration and long cycle life are thus provided for.

    摘要翻译： 电化学和气相储氢合金组合物，特别是在低温下，具有出色的循环寿命特性。 本发明的合金是包括循环寿命增强元件和低Co浓度的AB 5 N 5型合金。 优选的循环寿命增强元件包括Zr和Si。 循环寿命增强元件通过在重复循环充放电或氢化 - 脱氢处理中减少合金颗粒的粉碎来增加本合金的循环寿命。 合金的特征在于循环时的滞后小，其中以质量浓度差为单位测量滞后，这是参与与将氢结合到合金中的活化能相关的参数。 本发明的合金被设计为具有低的氢引入活化能，因此，提供低滞后和在材料内吸收的氢的更均匀的浓度。 结果，与氢的吸收相关的差异晶格膨胀效应被最小化，并且使循环的颗粒粉碎的趋势最小化。 因此提供具有低Co浓度和长循环寿命的合金。

    Hydrogen storage alloys having reduced PCT hysteresis
    7.
    发明申请
    Hydrogen storage alloys having reduced PCT hysteresis 审中-公开
    具有降低的PCT滞后的储氢合金

    公开(公告)号：US20060057019A1

    公开(公告)日：2006-03-16

    申请号：US10942178

    申请日：2004-09-16

    申请人： Kwo Young ,  Michael Fetcenko ,  Stanford Ovshinsky ,  Taihei Ouchi ,  Feng Li ,  Melanie Reinhout

    发明人： Kwo Young ,  Michael Fetcenko ,  Stanford Ovshinsky ,  Taihei Ouchi ,  Feng Li ,  Melanie Reinhout

    IPC分类号： C22C19/03

    CPC分类号： H01M4/383 ,  C01B3/0057 ,  C01B3/0078 ,  H01M4/385 ,  H01M10/345 ,  Y02E60/327

    摘要： A modified A2B7 type hydrogen storage alloy having reduced hysteresis. The alloy consists of a base AxBy hydrogen storage alloy, where A includes at least one rare earth element and also includes magnesium, B includes at least nickel, and the atomic ratio of x to y is between 1:2 and 1:5. The base alloy is modified by the addition of at least one modifier element which has an atomic volume less than about 8 cm3/mole, and is added to the base alloy in an amount sufficient to reduce the absorption/desorption hysteresis of the alloy by at least 10% when compared with the base alloy.

    摘要翻译： 具有降低的滞后的改性的A 2 N 2 B 7型储氢合金。 该合金由一种碱金属的储氢合金组成，其中A包括至少一种稀土元素，并且还包括镁，B至少包括镍，和 x与y的原子比为1：2与1：5之间。 通过添加至少一种具有小于约8cm 3 / mole的原子体积的改性剂元素来改变基础合金，并且以足以减少吸收的量加入到基础合金中 /解吸滞后与基础合金相比至少10％。

    Hydrogen storage powder and process for preparing the same
    8.
    发明授权
    Hydrogen storage powder and process for preparing the same 有权
    储氢粉及其制备方法

    公开(公告)号：US06461766B1

    公开(公告)日：2002-10-08

    申请号：US09575313

    申请日：2000-05-19

    申请人： Kwo Young ,  Michael A. Fetcenko ,  Stanford R. Ovshinsky

    发明人： Kwo Young ,  Michael A. Fetcenko ,  Stanford R. Ovshinsky

    IPC分类号： H01M452

    CPC分类号： H01M4/242 ,  B22F1/0088 ,  B22F9/023 ,  B22F2998/00 ,  C01B3/0031 ,  C01B3/0084 ,  H01M4/04 ,  H01M4/383 ,  Y02E60/327 ,  Y02E60/328 ,  Y02P20/129 ,  C22C1/0491

    摘要： An anti-pyrophoric hydrogen storage material having an engineered surface oxide to enhance initial activation and a method for making the same. The method for making. the hydrogen storage material includes the steps of providing a hydrogen storage powder and oxidizing the powder with a controlled oxidation reaction. In a preferred aspect hereof, the method includes providing a bulk hydrogen storage alloy; hydriding the alloy to form a comminuted material; and oxidizing the surface of the comminuted material with a controlled oxidation reaction. In another preferred aspect hereof, a passivating material is added to the comminuted material prior to the step for oxidizing to enhance initial activation. In still another preferred aspect hereof, at least one sacrificial modifier is provided in the particalized material to enhance initial activation.

    摘要翻译： 具有工程化表面氧化物以增强初始活化的抗自燃氢存储材料及其制备方法。 制作方法。 储氢材料包括提供储氢粉末并用受控氧化反应氧化粉末的步骤。 在本发明的优选方案中，该方法包括提供块体储氢合金; 氢化合金以形成粉碎材料; 并用受控的氧化反应氧化粉碎材料的表面。 在本发明的另一优选方面，在氧化步骤以增强初始活化之前，将钝化材料加入粉碎材料中。 在本发明的另一优选方面，在部分化材料中提供至少一种牺牲改性剂以增强初始活化。