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    Method for production of hydrogen storage alloy for use in alkaline storage batteries
    2.
    发明授权
    Method for production of hydrogen storage alloy for use in alkaline storage batteries 失效
    用于碱性蓄电池的储氢合金的制造方法

    公开(公告)号：US07078126B2

    公开(公告)日：2006-07-18

    申请号：US10334287

    申请日：2002-12-31

    申请人： Teruhiko Imoto ,  Masutaka Ouchi ,  Yohei Hirota ,  Kikuko Kato ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    发明人： Teruhiko Imoto ,  Masutaka Ouchi ,  Yohei Hirota ,  Kikuko Kato ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    IPC分类号： H01M4/32 ,  H01M4/52 ,  H01M4/58

    CPC分类号： H01M4/26 ,  C01B3/0031 ,  H01M4/242 ,  H01M4/366 ,  H01M4/383 ,  H01M4/385 ,  H01M10/345 ,  Y02E60/124 ,  Y02E60/327 ,  Y02P70/54 ,  Y10S420/90

    摘要： A method of producing a hydrogen storage alloy, for use in alkaline storage batteries, includes two steps. A first step involves preparing alloy particles having a CaCu5-type crystal structure and the compositional formula MmNixCoyMnzM1−z, wherein M represents at least one element selected from the group consisting of aluminum (Al) and copper (Cu), 3.0≦x≦5.2, 0≦y≦1.2, 0.1≦z≦0.9, and 4.4≦x+y+z≦5.4. A second step involves immersing the alloy particles in an acid treating solution containing a cobalt compound and a copper compound, each in the amount of 0.1 to 5.0% by weight based on the weight of the alloy particles, and an organic additive to remove oxide films from and to reductively deposit cobalt and copper on a surface of each alloy particle to form a surface region surrounding a bulk region and having a graded composition. When the sum in percentage of numbers of cobalt (Co) atoms and copper (Cu) atoms present in the surface region is given by a and that in the bulk region by b, the relationship a/b≧1.3 is satisfied.

    摘要翻译： 制备用于碱性蓄电池的储氢合金的方法包括两个步骤。 第一步涉及制备具有CaC 5 O 5 - 型晶体结构的合金颗粒，并且组成式M m N i x Co y S y N z 其中M表示选自铝（Al）和铜（Cu）中的至少一种元素，3.0 <= x <= 5.2,0 <= y <= 1.2,0.1 <= z <= 0.9，4.4 <= x + y + z <= 5.4。 第二步骤是将合金颗粒浸入包含钴化合物和铜化合物的酸处理溶液中，各自以合金颗粒重量计为0.1〜5.0重量％，除去氧化物膜的有机添加剂 从而在每个合金颗粒的表面上还原性地沉积钴和铜以形成围绕体区域并具有渐变组成的表面区域。 当存在于表面区域中的钴（Co）原子和铜（Cu）原子的数量的总和由a给出，并且在体积区域中由b给出时，满足a / b> = 1.3的关系。

    Hydrogen absorbing alloy electrode and process for producing same
    3.
    发明授权
    Hydrogen absorbing alloy electrode and process for producing same 失效
    吸氢合金电极及其制造方法

    公开(公告)号：US06342318B1

    公开(公告)日：2002-01-29

    申请号：US09460426

    申请日：1999-12-14

    申请人： Yohei Hirota ,  Nobuyuki Higashiyama ,  Teruhiko Imoto ,  Kikuko Kato ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    发明人： Yohei Hirota ,  Nobuyuki Higashiyama ,  Teruhiko Imoto ,  Kikuko Kato ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    IPC分类号： H01M458

    CPC分类号： H01M4/383 ,  C01B3/0078 ,  H01M4/02 ,  H01M4/0471 ,  H01M4/242 ,  H01M10/345 ,  H01M2300/0014 ,  Y02E60/327 ,  Y10S420/90

    摘要： A hydrogen absorbing alloy electrode is provided which has an excellent oxygen gas absorbing capacity and further improved in charge-discharge cycle characteristics and high-rate discharge characteristics. The electrode contains a powder prepared by mixing a hydrogen absorbing alloy powder with a powder of at least one complex oxide selected from the group consisting of a ZrO2—Y2O3 solid solution, ZrO2—CaO solid solution, CeO2—Gd2O3 solid solution, CeO2—La2O3 solid solution, ThO2—Y2O3 solid solution, Bi2O3—Y2O3 solid solution, Bi2O3—Gd2O3 solid solution, Bi2O3—Nb2O3 solid solution and Bi2O3—WO3 solid solution. Preferably the electrode contains 0.1 to 10 wt. % of the complex oxide powder based on the combined amount of the two powders.

    摘要翻译： 提供一种具有优异的氧气吸收能力并进一步提高充放电循环特性和高放电特性的吸氢合金电极。 电极含有通过将吸氢合金粉末与选自ZrO 2 -Y 2 O 3固溶体，ZrO 2-CaO固溶体，CeO 2 -Gd 2 O 3固溶体，CeO 2 -La 2 O 3中的至少一种复合氧化物的粉末混合而制备的粉末 固溶体，ThO2-Y2O3固溶体，Bi2O3-Y2O3固溶体，Bi2O3-Gd2O3固溶体，Bi2O3-Nb2O3固溶体和Bi2O3-WO3固溶体。 优选地，电极含有0.1-10wt。 基于两种粉末的组合量的复合氧化物粉末的％。

    Hydrogen absorbing alloy electrode and process for producing same
    4.
    发明授权
    Hydrogen absorbing alloy electrode and process for producing same 有权
    吸氢合金电极及其制造方法

    公开(公告)号：US06329100B1

    公开(公告)日：2001-12-11

    申请号：US09468297

    申请日：1999-12-21

    申请人： Teruhiko Imoto ,  Yohei Hirota ,  Kikuko Kato ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    发明人： Teruhiko Imoto ,  Yohei Hirota ,  Kikuko Kato ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    IPC分类号： H01M458

    CPC分类号： H01M4/383 ,  Y10S420/90

    摘要： A hydrogen absorbing alloy electrode is provided which is improved in hydrogen gas absorbing ability and in low-temperature discharge characteristics. The electrode contains a hydrogen absorbing alloy having a crystal structure of the CaCu5 type and represented by the stoichiometric ratio ABx, the hydrogen absorbing alloy being represented by MmNiaCobAlcMd wherein Mm is a misch metal, M is Mn and/or Cu, the atomic ratios a, b, c and d are in the respective ranges of 3.0≦a≦5.2, 0≦b≦1.2, 0.1≦c≦0.9, 0.1≦d≦0.8, wherein X is the sum of the atomic ratios a, b, c, and d, such that, X=a+b+c+d and, is in the range of 4.4≦X≦5.4. More specifically, the electrode contains a hydrogen absorbing alloy powder at least 5.0 in X, and a hydrogen absorbing alloy powder less than 5.0 in X.

    摘要翻译： 提供一种吸氢合金电极，其提高氢气吸收能力和低温放电特性。 该电极含有具有CaCu5型晶体结构且由化学计量比ABx表示的吸氢合金，该吸氢合金由MmNiaCobAlcMd表示，其中Mm为混合稀土金属，M为Mn和/或Cu，原子比a ，b，c和d分别在3.0 <= a <= 5.2,0 <= b <= 1.2,0.1 <= c <=0.9,0.1≤d≤0.8的范围内，其中X是 原子比a，b，c和d，使得X = a + b + c + d，并且在4.4 <= X <= 5.4的范围内。 更具体地说，电极含有X至少为5.0的吸氢合金粉末，X中的吸氢合金粉末小于5.0。

    Hydrogen storage alloy for use in alkaline storage batteries and method for production thereof
    5.
    发明授权
    Hydrogen storage alloy for use in alkaline storage batteries and method for production thereof 失效
    用于碱性蓄电池的储氢合金及其制造方法

    公开(公告)号：US06576367B1

    公开(公告)日：2003-06-10

    申请号：US09720615

    申请日：2000-12-26

    申请人： Teruhiko Imoto ,  Masutaka Ouchi ,  Yohei Hirota ,  Kikuko Kato ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    发明人： Teruhiko Imoto ,  Masutaka Ouchi ,  Yohei Hirota ,  Kikuko Kato ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    IPC分类号： H01M458

    CPC分类号： H01M4/26 ,  C01B3/0031 ,  H01M4/242 ,  H01M4/366 ,  H01M4/383 ,  H01M4/385 ,  H01M10/345 ,  Y02E60/124 ,  Y02E60/327 ,  Y02P70/54 ,  Y10S420/90

    摘要： A hydrogen storage alloy, for use in alkaline storage batteries, having a CaCu5-type crystal structure and represented by the compositional formula MmNixCoyMnzMl-z (wherein M represents at least one element selected from the group consisting of aluminum (Al) and copper (Cu); x is a nickel (Ni) stoichiometry and satisfies 3.0≦x≦5.2; y is a cobalt (Co) stoichiometry and satisfies 0≦y≦1.2; z is a manganese (Mn) stoichiometry and satisfies 0.1≦z≦0.9; and the sum of x, y and z satisfies 4.4≦x+y+z≦5.4). The hydrogen storage alloy includes a bulk region having a CaCu5-type crystal structure and a substantially uniform composition and a surface region surrounding said bulk region and having a graded composition. When the sum in percentage of numbers of cobalt (Co) atoms and copper (Cu) atoms present in the surface region is given by a and that in the bulk region by b, the relationship a/b≧1.3 is satisfied.

    摘要翻译： 一种用于碱性蓄电池的储氢合金，其具有CaCu5型晶体结构并由组成式MmNixCoyMnzMl-z表示（其中M表示选自铝（Al）和铜（Cu）中的至少一种元素 ）; x为镍（Ni）化学计量，满足3.0 <= x <= 5.2; y为钴（Co）化学计量，满足0 <= y <= 1.2; z为锰（Mn）化学计量， = z <= 0.9; x，y和z的和满足4.4 <= x + y + z <= 5.4）。 储氢合金包括具有CaCu5型晶体结构和基本上均匀组成的体区域和围绕所述体积区域并具有渐变组成的表面区域。 当存在于表面区域中的钴（Co）原子和铜（Cu）原子的数量的总和由a给出，并且在体积区域中由b给出时，满足a / b> = 1.3的关系。

    Hydrogen absorbing alloy electrode and process for fabricating same
    7.
    发明授权
    Hydrogen absorbing alloy electrode and process for fabricating same 失效
    吸氢合金电极及其制造方法

    公开(公告)号：US06270547B1

    公开(公告)日：2001-08-07

    申请号：US09508696

    申请日：2000-03-29

    申请人： Teruhiko Imoto ,  Kikuko Kato ,  Yohei Hirota ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    发明人： Teruhiko Imoto ,  Kikuko Kato ,  Yohei Hirota ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    IPC分类号： B22F102

    CPC分类号： H01M4/364 ,  B22F1/0003 ,  B22F2998/00 ,  B22F2999/00 ,  H01M4/242 ,  H01M4/383 ,  H01M10/345 ,  B22F1/0014 ,  B22F1/025

    摘要： A hydrogen absorbing alloy electrode characterized in that the electrode consists mainly of a mixture of a first hydrogen absorbing alloy powder A formed on surfaces of particles thereof with a surface layer 22 containing metallic copper or a copper oxide and a second hydrogen absorbing alloy powder B formed on surfaces of particles thereof with a surface layer 24 containing metallic cobalt or a cobalt oxide. The copper-coated hydrogen absorbing alloy powder A affords improved electric conductivity, and the cobalt-coated hydrogen absorbing alloy powder B gives improved ability to absorb and desorb hydrogen, whereby the electrode is improved in different battery characteristics, such as cycle characteristics, high-rate discharge characteristics and infernal pressure characteristics, at the same time.

    摘要翻译： 一种吸氢合金电极，其特征在于，电极主要由形成在其颗粒表面上的第一吸氢合金粉末A与形成有金属铜或氧化铜的表面层22和形成的第二吸氢合金粉末B的混合物组成 在其颗粒的表面上具有含有金属钴或氧化钴的表面层24。 铜包覆的吸氢合金粉末A提供了改善的导电性，并且钴包覆的吸氢合金粉末B提高了吸收和解吸氢的能力，由此电极在不同的电池特性如循环特性， 速率放电特性和地下压力特性，同时。

    Hydrogen absorbing alloy electrode, method of fabricating hydrogen absorbing alloy electrode, and alkali secondary battery
    10.
    发明授权
    Hydrogen absorbing alloy electrode, method of fabricating hydrogen absorbing alloy electrode, and alkali secondary battery 失效
    吸氢合金电极，制备吸氢合金电极的方法和碱二次电池

    公开(公告)号：US06358647B1

    公开(公告)日：2002-03-19

    申请号：US09374998

    申请日：1999-08-16

    申请人： Teruhiko Imoto ,  Kikuko Kato ,  Yasushi Kuroda ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    发明人： Teruhiko Imoto ,  Kikuko Kato ,  Yasushi Kuroda ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Shin Fujitani ,  Koji Nishio

    IPC分类号： H01M438

    CPC分类号： H01M4/383 ,  Y10S420/90

    摘要： In the present invention, a hydrogen absorbing alloy containing at least nickel, cobalt and aluminum, in which the sum a of the respective abundance ratios of cobalt atoms and aluminum atoms in a portion to a depth of 30 Å from its surface and the sum b of the respective abundance ratios of cobalt atoms and aluminum atoms in a bulk region inside thereof satisfy conditions of a/b≧1.30, or a hydrogen absorbing alloy containing at least nickel, cobalt, aluminum and manganese, in which the sum A of the respective abundance ratios of cobalt atoms, aluminum atoms and manganese atoms in a portion to a depth of 30 Å from its surface and the sum B of the respective abundance ratios of cobalt atoms, aluminum atoms and manganese atoms in a bulk region inside thereof satisfy conditions A/B≧1.20 is used for a hydrogen absorbing alloy electrode in an alkali secondary battery.

    摘要翻译： 在本发明中，至少含有镍，钴和铝的吸氢合金，其中钴原子和铝原子的相应丰度比从其表面到深度的一部分的总和a与总和b 在其内部的本体区域中的钴原子和铝原子的相应丰度比满足a / b> = 1.30的条件，或至少含有镍，钴，铝和锰的吸氢合金，其中， 在其表面深度为一部分的钴原子，铝原子和锰原子的丰度比例以及其内部的本体区域中钴原子，铝原子和锰原子的相应丰度比的总和B满足条件 A / B> = 1.20用于碱性二次电池中的吸氢合金电极。