Fuel cell hydrogen supply systems using secondary fuel to release stored hydrogen
    71.
    发明授权
    Fuel cell hydrogen supply systems using secondary fuel to release stored hydrogen 有权
    使用二次燃料释放储存的氢的燃料电池氢气供应系统

    公开(公告)号:US06627340B1

    公开(公告)日:2003-09-30

    申请号:US09687718

    申请日:2000-10-13

    IPC分类号: C22C2300

    摘要: Hydrogen propelled fuel cell vehicle system designs that reduce the relative cost of releasing hydrogen from hydrogen storage alloys by providing and/or utilizing secondary sources of heat to supply the heat of desorption of stored hydrogen. The secondary source can include combusting conventional secondary (non-hydrogen) fuels. The fuel supply system uses fundamentally new magnesium-based hydrogen storage alloy materials which for the first time make it feasible and practical to use solid state storage and delivery of hydrogen to power fuel cell vehicles. These exceptional alloys have remarkable hydrogen storage capacity of over 7 weight % coupled with extraordinary absorption kinetics such that the alloy powder absorbs 80% of its total capacity within 1.5 minutes at 300° C. and a cycle life of at least 2000 cycles without loss of capacity or kinetics.

    摘要翻译: 氢驱动的燃料电池车辆系统设计通过提供和/或利用二次热源来减少从储氢合金释放氢的相对成本,以提供储存的氢的解吸热。 次级源可以包括燃烧常规的二次(非氢)燃料。 燃料供应系统采用基本上新的镁基储氢合金材料,首次使固体储存和氢气输送到动力燃料电池车辆变得可行和实用。 这些特殊的合金具有超过7重量%的显着的储氢能力,加上非凡的吸收动力学,使得合金粉末在300℃下在1.5分钟内吸收其总容量的80%,并且循环寿命至少为2000个循环而不损失 容量或动力学。

    Hydrogen storage powder and process for preparing the same
    72.
    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

    IPC分类号: H01M452

    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。

    Hydrogen cooled hydrogen storage unit having maximized cooling efficiency
    75.
    发明授权
    Hydrogen cooled hydrogen storage unit having maximized cooling efficiency 有权
    具有最大化冷却效率的氢冷氢存储单元

    公开(公告)号:US06318453B1

    公开(公告)日:2001-11-20

    申请号:US09558827

    申请日:2000-04-26

    IPC分类号: F28D1500

    摘要: A hydrogen cooled hydrogen storage unit which employs excess hydrogen flow through flow channels between hydrogen storage alloy plates in order to provide convective cooling of the plates. The unit provides for high packing density of the storage materials and ease of expansion of storage capacity by merely adding more storage material plates. Since the hydrogen flows transversely between the plates and does not flow along the entire length of the stack, the cooling flow path of the hydrogen is short, and the temperature differential between any point of the stack and the hydrogen coolant is maximized, which maximizes the cooling efficiency of the unit.

    摘要翻译: 一个氢冷却的氢存储单元,其使用过量的氢气流过储氢合金板之间的流动通道,以便提供板的对流冷却。 该单元通过添加更多的储存材料板提供储存材料的高填充密度和容易扩大存储容量。 由于氢气在板之间横向流动并且不沿堆叠的整个长度流动,所以氢的冷却流动路径短,并且堆叠的任何点与氢气冷却剂之间的温差最大化, 冷却效率的单位。