摘要:
An inexpensive, highly catalytic material preferably formed by a leaching process. The catalyst comprises a finely divided metal particulate and a support. The active material may be a nickel and/or nickel alloy particulate having a particle size less than about 100 Angstroms. The support may be one or more metal oxides.
摘要:
A novel method for forming powder of a hydrogen storage alloy without the need for further mechanical processing. The alloy powder may be adapted for use as the negative electrode material of rechargeable electrochemical, hydrogen storage cells. The method includes the step of controlling the hydrogen concentration wihtin the hydrogen storage alloy to form powder where 90% of the particles are less than 250 microns in average dimension.
摘要:
A disordered multicomponent MgNi based electrochemical hydrogen storage material having a microstructure including a substantial volume fraction characterized by intermediate range order and exhibiting extraordinarily high storage capacity and methods of fabricating same.
摘要:
An inexpensive, highly catalytic material preferably formed by a leaching process. The catalyst comprises a finely divided metal particulate and a support. The active material may be a nickel and/or nickel alloy particulate having a particle size less than about 100 Angstroms. The support may be one or more metal oxides.
摘要:
An industrial catalyst having : a support; a plurality of metallic particulates distributed throughout the support; and a metal at least partially covering the surface of the support. A method for making a catalyst including the steps of : forming a support with non-noble metal particulates distributed throughout the support; and at least partially covering the surface of the support with a metal.
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:
Disordered Multicomponent hydrogen storage material characterized by extraordinarily high storage capacity due to a high density of useable hydrogen storage sites (greater than 1023 defect sites/cc) and/or an extremely small crystallite size, as shown on the graph in the figure. The hydrogen storage material can be employed for electrochemical, fuel cell and gas phase applications. The material may be selected from either of the modified LaNi¿5? or modified TiNi families formulated to have a crystallite size of less than 200 Angstroms and most preferably less than 100 Angstroms.
摘要:
High capacity, long cycle life positive electrode modified nickel hydroxide material for use in an alkaline rechargeable electrochemical cell at least one modifier and has modified activation energy, chemical potential and electrical conductivity. Particle size, particle size distribution, electrical conductivity have been controlled by introducing modifier elements throughout the bulk of the active material and by controlling process parameters.
摘要:
Non-uniform heterogeneous powder particles for electrochemical uses, and said powder particles comprising at least two separate and distinct hydrogen storage alloys selected from the group consisting of: Ovonic LaNi5 type alloys, Ovonic TiNi type alloys, and Ovonic MgNi based alloys.
摘要翻译:用于电化学应用的非均匀非均相复合粉末颗粒,包含至少两种分开且不同的储氢合金混合在一起。 第一种储氢合金是具有混合物的材料。 的(Mg x Ni 1-x)aMb,其中b = 0-30at。 %,a + b = 100 at。 %,25 = x = 75 at。 %,M表示选自Ni,Co,Mn,Al,Fe,Cu,Mo,W,Cr,V,Ti,Zr,Sn,Th,Si,Zn,Li,Cd,Na,Pb ,La,Ce,Pr,Nd,Mn和Ca,其中第二储氢合金包含选自以下组分的组分:Ti为0至60%,Zr为0至40%,V为0至60% ,0〜57%的Ni,0〜56%的Cr,0-56%的Cu,0〜15%的Co,0〜20%的Mn,0〜20%的Al,0〜10%的Fe, 0至8%的Mo,0至30%的La和0至30%的Mm,第二合金和第二合金的等于100原子%的组分的总数包封第一合金。 还要求的是:(i)如上制备用于电化学储氢的非均匀的非均相复合颗粒的方法,其包括通过混合和熔化形成第二组分的第二组分的第一组分的合金来形成第一组分, 并用第二部件封装第一部件; (ii)用作镍金属氢化物电极的活性材料的非均匀非均相复合粉末颗粒,其包含至少两种单相TiNi合金,单相LaNi5合金,单一Mg基合金,多相TiNi合金, 相LaNi5合金和多相Mg基合金混合在一起; 和(iii)包含如上所述用于储氢的非均匀非均相复合颗粒的电化学储氢室。