High storage capacity alloys having excellent kinetics and a long cycle life
    5.
    发明授权
    High storage capacity alloys having excellent kinetics and a long cycle life 失效
    高储存能力的合金具有优异的动力学和较长的循环寿命

    公开(公告)号:US06726783B1

    公开(公告)日:2004-04-27

    申请号:US09573240

    申请日:2000-05-18

    IPC分类号: C22C2300

    摘要: A fundamentally new magnesium-based hydrogen storage alloy material which makes it feasible and practical to use solid state storage and delivery of hydrogen to power internal combustion engine or fuel cell vehicles. These alloys have remarkable hydrogen storage capacity of well over 6 weight percent. The alloys also have extraordinary absorption kinetics such that the alloy absorbs 80 percent of its total capacity within five minutes. The alloys are in particle form where the particles have a size ranging from 30 to 70 microns. The alloys also have a dual phase structure (formed by cooling from the melt at a cooling rate of 103-104° C.). The dual phase structure is such that an intergranular region surrounds a major hydrogen storage phase thus providing the alloys with resistance to sintering during high temperature hydriding/dehydriding cycling thereof. As a result of the dual phase structure, the alloys have an extended cycle life.

    摘要翻译: 一种基本上新的镁基储氢合金材料,其使得固态储存和输送氢气供给内燃机或燃料电池车辆变得可行和实用。 这些合金具有超过6重量%的显着的储氢能力。 该合金还具有非凡的吸收动力学,使得合金在五分钟内吸收其总容量的80%。 该合金是颗粒形式,其中颗粒的尺寸范围为30至70微米。 合金还具有双相结构(通过以10 -3℃-10℃的冷却速率从熔体中冷却形成)。 双相结构使得晶间区域围绕主储氢阶段,从而在高温氢化/脱氢循环期间使合金具有耐烧结性。 作为双相结构的结果,合金具有延长的循环寿命。