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    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 powder and process for preparing the same
    2.
    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。