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    ELECTROCHEMICALLY STABILIZED CaNi 5? ALLOYS AND ELECTRODES
    1.
    发明公开
    ELECTROCHEMICALLY STABILIZED CaNi 5? ALLOYS AND ELECTRODES 审中-公开
    电化学稳定化CANI5合金和PADS

    公开(公告)号：EP1190459A1

    公开(公告)日：2002-03-27

    申请号：EP00928423.3

    申请日：2000-04-27

    申请人： ENERGY CONVERSION DEVICES, INC.

    发明人： OVSHINSKY, Stanford, R. ,  YOUNG, Rosa, T.

    IPC分类号： H01M4/58 ,  H01M4/32 ,  H01M4/52 ,  H01M4/02 ,  C22C19/03

    CPC分类号： H01M4/385 ,  H01M4/383 ,  H01M10/345 ,  Y10S420/90

    摘要： An electrochemically stabilized Ca-Ni hydrogen storage alloy material for use as the active negative electrode material of an alkaline electrochemical cell. The alloy material includes at least one modifier element which stabilizes the alloy material from degradation during electrochemical cycling in an alkaline cell, by protecting calcium within the alloy and preventing dissolution of calcium into the alkaline electrolyte. The alloy has the formula (Ca1-x-yMxNi2y)Ni5-zQz, where M is at least one element selected from the group consisting of misch metal, rare earth metals, zirconium and mixtures of Zr with Ti or V, Q is at least one element selected from the group consisting of Si, Al, Ge, Sn, In, Cu, Zn, Co, and mixtures thereof, x ranges between about o.o2 and o.2, y ranges between about 0.02 and 0.4, and z ranges from about 0.05 to about 1.00.

    MODIFIED MAGNESIUM BASED HYDROGEN STORAGE ALLOYS
    5.
    发明授权
    MODIFIED MAGNESIUM BASED HYDROGEN STORAGE ALLOYS 有权
    修改于镁基合金储氢

    公开(公告)号：EP1243041B1

    公开(公告)日：2007-02-07

    申请号：EP00979211.0

    申请日：2000-11-20

    申请人： ENERGY CONVERSION DEVICES, INC.

    发明人： OVSHINSKY, Stanford, R. ,  YOUNG, Rosa, T.

    IPC分类号： H01M4/46 ,  C22C23/00 ,  C01B3/00 ,  H01M4/38

    CPC分类号： C01B3/0031 ,  B22F2998/00 ,  C01B3/0047 ,  C22C1/0408 ,  C22C23/00 ,  C22C23/06 ,  H01M4/383 ,  H01M4/46 ,  H01M8/065 ,  Y02E60/327 ,  Y10S420/90 ,  B22F9/10

    摘要： A magnesium based hydrogen storage alloy powder which is useful as a hydrogen supply material for powering internal combustion engine or fuel cell vehicles. The alloy contains greater than about 85 atomic percent magnesium, about 2-8 atomic percent nickel, about 0.5-5 atomic percent aluminum and about 2-7 atomic percent rare earth metals or mixtures of rare earth metals. The rare earth elements may be Misch metal and may predominantly contain Ce and/or La. The alloy may also contain about 0.5-5 atomic percent silicon. The alloys can be modified to store more than 4 wt.%, preferably more than 4.5 wt.%, most preferably more than 5 wt.% hydrogen, with a reduced hydride bond strength (i.e. about 64 kJ/mole) which allows for economic recovery of the stored hydrogen. Also, they have a plateau pressure about two times greater than pure Mg and comparable bond energies and plateau pressures to Mg2Ni alloys, while reducing the amount of incorporated nickel by 25-30 atomic %. This reduced nickel content greatly reduces cost of the alloy. Also, while the kinetics of the alloy are improved over pure Mg, the storage capacity of the alloy is significantly greater than the 3.6 wt.% of Mg2Ni material.

    MODIFIED MAGNESIUM BASED HYDROGEN STORAGE ALLOYS
    6.
    发明公开
    MODIFIED MAGNESIUM BASED HYDROGEN STORAGE ALLOYS 有权
    修改于镁基合金储氢

    公开(公告)号：EP1243041A2

    公开(公告)日：2002-09-25

    申请号：EP00979211.0

    申请日：2000-11-20

    申请人： ENERGY CONVERSION DEVICES, INC.

    发明人： OVSHINSKY, Stanford, R. ,  YOUNG, Rosa, T.

    IPC分类号： H01M4/46

    CPC分类号： C01B3/0031 ,  B22F2998/00 ,  C01B3/0047 ,  C22C1/0408 ,  C22C23/00 ,  C22C23/06 ,  H01M4/383 ,  H01M4/46 ,  H01M8/065 ,  Y02E60/327 ,  Y10S420/90 ,  B22F9/10

    摘要： A magnesium based hydrogen storage alloy powder which is useful as a hydrogen supply material for powering internal combustion engine or fuel cell vehicles. The alloy contains greater than about 85 atomic percent magnesium, about 2-8 atomic percent nickel, about 0.5-5 atomic percent aluminum and about 2-7 atomic percent rare earth metals or mixtures of rare earth metals. The rare earth elements may be Misch metal and may predominantly contain Ce and/or La. The alloy may also contain about 0.5-5 atomic percent silicon. The alloys can be modified to store more than 4 wt.%, preferably more than 4.5 wt.%, most preferably more than 5 wt.% hydrogen, with a reduced hydride bond strength (i.e. about 64 kJ/mole) which allows for economic recovery of the stored hydrogen. Also, they have a plateau pressure about two times greater than pure Mg and comparable bond energies and plateau pressures to Mg2Ni alloys, while reducing the amount of incorporated nickel by 25-30 atomic %. This reduced nickel content greatly reduces cost of the alloy. Also, while the kinetics of the alloy are improved over pure Mg, the storage capacity of the alloy is significantly greater than the 3.6 wt.% of Mg2Ni material.