公开(公告)号：US06420068B1

公开(公告)日：2002-07-16

申请号：US09643264

申请日：2000-08-22

申请人： Masutaka Ouchi ,  Yoshihiro Masuda ,  Teruhiko Imoto ,  Kikuko Kato ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Yasuhiko Itoh

发明人： Masutaka Ouchi ,  Yoshihiro Masuda ,  Teruhiko Imoto ,  Kikuko Kato ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Yasuhiko Itoh

IPC分类号： H01M458

CPC分类号： H01M4/383 ,  C01B3/0057 ,  H01M4/242 ,  Y02E60/327 ,  Y10S420/90 ,  Y10T29/49108

摘要： A hydrogen storage alloy electrode containing, as a principal active material, a powder of hydrogen storage alloy having a CaCu5 crystal structure and represented by the formula MmNixCoyMnzMw where M is at least one element selected from aluminum (Al) and copper (Cu), x is between 3.0 and 5.2, y is between 0 and 1.2, z is between 0.1 and 0.9, w is between 0.1 and 0.9, and the sum of x, y, z and w is between 4.4 and 5.4. The hydrogen storage alloy powder particles have a surface region and a bulk region enclosed within the surface region and have a higher nickel content in the surface region than in the bulk region. The hydrogen storage alloy electrode further contains an oxide and/or hydroxide of at least one rare-earth element selected from ytterbium (Yb), samarium (Sm), erbium (Er) and gadolinium (Gd).

摘要翻译： 一种储氢合金电极，其含有具有CaCu5晶体结构并由式MmNixCoyMnzMw表示的储氢合金粉末作为主要活性物质，其中M为选自铝（Al）和铜（Cu）中的至少一种元素，x 在3.0和5.2之间，y在0和1.2之间，z在0.1和0.9之间，w在0.1和0.9之间，x，y，z和w之和在4.4和5.4之间。 储氢合金粉末颗粒具有包围在表面区域内的表面区域和体积区域，并且在表面区域中具有比在块区域中更高的镍含量。 储氢合金电极还含有选自镱（Yb），钐（Sm），铒（Er）和钆（Gd）中的至少一种稀土元素的氧化物和/或氢氧化物。

公开(公告)号：US06395424B1

公开(公告)日：2002-05-28

申请号：US09524259

申请日：2000-03-14

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

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

IPC分类号： H01M458

CPC分类号： H01M4/383 ,  H01M4/0471 ,  H01M4/242 ,  H01M2004/021 ,  H01M2004/027 ,  Y10S420/90

摘要： In the present invention, a hydrogen absorbing alloy obtained by sintering hydrogen absorbing alloy powder containing not less than 50% by weight of particles having a particle diameter of not more than 25 &mgr;m at a temperature of not more than 850° C. is used for a hydrogen absorbing alloy electrode for an alkali storage battery, and the hydrogen absorbing alloy electrode for an alkali storage battery is used as a negative electrode of the alkali storage battery.

摘要翻译： 在本发明中，通过在不高于850℃的温度下烧结含有不少于50重量％粒径不大于25μm的颗粒的吸氢合金粉末而获得的吸氢合金用于 作为碱性蓄电池的负极，使用碱性蓄电池用吸氢合金电极和碱性蓄电池用吸氢合金电极。

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。

公开(公告)号：US06238822B1

公开(公告)日：2001-05-29

申请号：US09147482

申请日：1999-01-07

申请人： Teruhiko Imoto ,  Yoshinori Matsuura ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Mitsuzo Nogami ,  Ikuo Yonezu ,  Koji Nishio

发明人： Teruhiko Imoto ,  Yoshinori Matsuura ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Mitsuzo Nogami ,  Ikuo Yonezu ,  Koji Nishio

IPC分类号： H01M462

CPC分类号： C01B3/0078 ,  B22F2998/00 ,  C01B3/0031 ,  H01M4/383 ,  Y02E60/327 ,  B22F1/0088

摘要： The invention provides a hydrogen absorbing alloy electrode obtained by the step P1 of preparing a hydrogen absorbing alloy powder containing cobalt and nickel, the step P2 of subjecting the surfaces of the alloy particles to a reduction treatment with high-temperature hydrogen by holding the powder in a high-temperature hydrogen atmosphere under the conditions of temperature, pressure and time sufficient to reduce oxides formed in a surface layer portion of each of the alloy particles, not melting the alloy particles and not permitting the alloy particles to absorb hydrogen, the step P3 of treating the resulting powder with an acid or alkali by immersing the powder in an acid or alkaline aqueous solution, followed by suction filtration, washing with water and drying, and the step P4 of applying the resulting power to an electrically conductive substrate and shaping the substrate in the form of the electrode. The electrode thus provided has higher activity than conventionally.

摘要翻译： 本发明提供一种通过制备含有钴和镍的吸氢合金粉末的步骤P1获得的吸氢合金电极，通过将粉末保持在高温氢气中来对合金颗粒的表面进行还原处理的步骤P2 在温度，压力和时间足以减少形成在每个合金颗粒的表层部分中的氧化物的条件下的高温氢气氛，不熔化合金颗粒并且不允许合金颗粒吸收氢，步骤P3 通过将粉末浸渍在酸或碱性水溶液中，然后抽吸过滤，用水洗涤并干燥，用酸或碱处理所得粉末，以及步骤P4将所得功率施加到导电基底上并使 电极形式的衬底。 由此提供的电极比以往更高的活性。

公开(公告)号：US6110304A

公开(公告)日：2000-08-29

申请号：US749531

申请日：1996-11-15

申请人： Mitsuzo Nogami ,  Yoshinori Matsuura ,  Mamoru Kimoto ,  Nobuyuki Higashiyama ,  Mitsunori Tokuda ,  Takahiro Isono ,  Ikuo Yonezu ,  Koji Nishio

发明人： Mitsuzo Nogami ,  Yoshinori Matsuura ,  Mamoru Kimoto ,  Nobuyuki Higashiyama ,  Mitsunori Tokuda ,  Takahiro Isono ,  Ikuo Yonezu ,  Koji Nishio

IPC分类号： B22F9/04 ,  H01M4/38 ,  C22C19/03

CPC分类号： H01M4/383 ,  B22F9/04 ,  B22F2009/041 ,  Y10S420/90

摘要： The hydrogen-absorbing alloy electrode for alkaline storage batteries according to the invention comprises a hydrogen absorbing alloy powder prepared by grinding a strip of hydrogen absorbing alloy produced by solidifying a molten alloy by a roll method and satisfying the following relations:r/t.ltoreq.0.5 (1)60.ltoreq.t.ltoreq.180 (2)30.ltoreq.r.ltoreq.90 (3)wherein r represents the mean particle size (.mu.m) of the hydrogen absorbing alloy powder and t represents the mean thickness (.mu.m) of the strip absorbing alloy. The hydrogen absorbing alloy electrode of this invention features an improved high-rate discharge characteristic at low temperature.

摘要翻译： 根据本发明的碱性蓄电池的吸氢合金电极包括通过研磨通过辊法固化熔融合金而制备的吸氢合金条而制备的吸氢合金粉末，并且满足以下关系：r / t < = 0.5（1）60

公开(公告)号：US5985057A

公开(公告)日：1999-11-16

申请号：US978271

申请日：1997-11-25

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： H01M4/38 ,  H01M4/04

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 .ANG. 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.gtoreq.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 .ANG. 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.gtoreq.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丰度比值与其表面的深度相差30 ANGSTROM的和总和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A 钴酸根，铝原子和锰原子在其表面的深度为30 ANGSTROM的部分中的丰度比和其内部的体区域中钴原子，铝原子和锰原子的丰度比的总和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。