公开(公告)号：US06576368B1

公开(公告)日：2003-06-10

申请号：US09410298

申请日：1999-09-30

申请人： Takeshi Ogasawara ,  Nobuyuki Higashiyama ,  Mutsumi Yano ,  Mamoru Kimoto ,  Yasuhiko Itoh ,  Koji Nishio

发明人： Takeshi Ogasawara ,  Nobuyuki Higashiyama ,  Mutsumi Yano ,  Mamoru Kimoto ,  Yasuhiko Itoh ,  Koji Nishio

IPC分类号： H01M432

CPC分类号： H01M4/52 ,  H01M4/32 ,  Y10T29/49108

摘要： A positive active material for sealed alkaline storage batteries is obtainable by subjecting &bgr;-nickel hydroxide, together with at least one additive selected from yttrium, gadolinium, erbium and ytterbium, and oxides, hydroxides, fluorides and chlorides thereof, to an oxidation treatment with an oxidizing agent in an aqueous alkaline solution. The positive active material contains nickel with a valence number in a range from 2.1 to 3.4.

摘要翻译： 用于密封碱性蓄电池的正极活性材料可以通过将β-氢氧化镍与选自钇，钆，铒和镱的至少一种添加剂及其氧化物，氢氧化物，氟化物和氯化物一起进行氧化处理， 氧化剂在碱性水溶液中。 正极活性物质含有价数为2.1〜3.4的镍。

公开(公告)号：US06849359B1

公开(公告)日：2005-02-01

申请号：US10009737

申请日：2000-07-05

申请人： Takeshi Ogasawara ,  Yoshifumi Magari ,  Mutsumi Yano ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Yasuhiko Itoh

发明人： Takeshi Ogasawara ,  Yoshifumi Magari ,  Mutsumi Yano ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Yasuhiko Itoh

IPC分类号： H01M4/32 ,  H01M4/52 ,  H01M10/30

CPC分类号： H01M4/32 ,  H01M4/52 ,  H01M10/30 ,  Y02E60/124

摘要： A non-sintered nickel electrode for an alkaline storage battery, characterized in that nickel hydroxide particles as active material particles thereof contain a cobalt having a valence of 3 to 3.2 as a solid solution element. The nickel electrode has excellent charging capability.

摘要翻译： 一种用于碱性蓄电池的非烧结镍电极，其特征在于作为活性物质颗粒的氢氧化镍颗粒含有作为固溶体元素的3至3.2价的钴。 镍电极具有优良的充电能力。

公开(公告)号：US06479189B1

公开(公告)日：2002-11-12

申请号：US09630458

申请日：2000-08-02

申请人： Takeshi Ogasawara ,  Yoshifumi Magari ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Yasuhiko Itoh

发明人： Takeshi Ogasawara ,  Yoshifumi Magari ,  Nobuyuki Higashiyama ,  Mamoru Kimoto ,  Yasuhiko Itoh

IPC分类号： H01M452

CPC分类号： H01M4/362 ,  H01M4/32 ,  H01M4/50 ,  H01M4/52 ,  H01M10/30 ,  H01M10/34 ,  H01M2010/4292 ,  H01M2300/0014 ,  Y02E60/124

摘要： The sealed alkaline storage battery of this invention includes a nonsintered nickel positive electrode using, as an active material, manganese-containing &agr;-nickel hydroxide including, as a solid-solution element, 15 through 50 wt % of manganese on the basis of a total amount of nickel and manganese; a negative electrode; and an alkaline electrolyte including 0.55 through 0.80 g of water per gram of the manganese-containing &agr;-nickel hydroxide. In this manner, the invention provides an alkaline storage battery exhibiting high positive electrode active material utilization for a large number of charge-discharge cycles.

摘要翻译： 本发明的密封碱性蓄电池包括非烧结镍正极，其使用含锰的α-氢氧化镍作为活性材料，其包含作为固溶体元素的基于总量的15至50重量％的锰 镍和锰的量; 负极; 以及每克含锰的α-氢氧化镍含有0.55〜0.80g水的碱性电解液。 以这种方式，本发明提供了一种在大量充放电循环中具有高正极活性物质利用率的碱性蓄电池。

公开(公告)号：US06284409B1

公开(公告)日：2001-09-04

申请号：US09436036

申请日：1999-11-08

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

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

IPC分类号： H01M458

CPC分类号： H01M4/624 ,  H01M4/242 ,  H01M4/383 ,  H01M4/621 ,  Y10S420/90

摘要： In a pasted hydrogen-absorbing alloy electrode of this invention, an active material layer made from a mixture of a hydrogen-absorbing alloy powder, a composite particle powder including carbon particles and a rare earth compound for partially coating surfaces of the carbon particles, and a binder is formed on a current collector. When this pasted hydrogen-absorbing alloy electrode is used in an alkaline storage battery, the alkaline storage battery can attain small increase of the internal pressure during charge, large discharge capacity in high rate discharge and good charge-discharge cycle performance.

摘要翻译： 在本发明的粘贴吸氢合金电极中，由吸氢合金粉末，含有碳粒子的复合粒子粉末和稀土类化合物的混合物构成的活性物质层，用于部分地涂覆碳粒子的表面，以及 在集电体上形成粘合剂。 当这种粘贴的储氢合金电极用于碱性蓄电池时，碱性蓄电池可以在充电期间内部压力小，放电容量大，充放电循环性能好。

公开(公告)号：US06444362B2

公开(公告)日：2002-09-03

申请号：US09833632

申请日：2001-04-13

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：US06242133B1

公开(公告)日：2001-06-05

申请号：US09333935

申请日：1999-06-16

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

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

IPC分类号： H01M458

CPC分类号： H01M4/622 ,  H01M4/242 ,  H01M4/62 ,  Y10T29/49115

摘要： A hydrogen-absorbing alloy electrode for an alkaline secondary battery. The electrode is prepared by adding a transition metal salt to a paste comprising a hydrogen-absorbing alloy powder and binder. The electrode improves charge-discharge cycle performance and high rate discharge capacity at low temperature of an alkaline secondary battery.

摘要翻译： 一种用于碱性二次电池的吸氢合金电极。 通过将过渡金属盐加入到包含吸氢合金粉末和粘合剂的糊料中来制备电极。 电极提高碱性二次电池的低温充放电循环性能和高放电容量。

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。

公开(公告)号：US06221528B1

公开(公告)日：2001-04-24

申请号：US09333933

申请日：1999-06-16

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

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

IPC分类号： H01M458

CPC分类号： H01M4/044 ,  H01M4/383 ,  Y10S420/90 ,  Y10T29/49115

摘要： A hydrogen-absorbing alloy electrode for an alkaline secondary battery. The electrode is made from a hydrogen-absorbing alloy containing nickel which has been treated with an acidic solution containing a chelating agent for nickel. The hydrogen-absorbing alloy electrode has good activity and a nickel-hydrogen battery having the hydrogen-absorbing alloy electrode as a negative electrode has a large high rate discharge capacity soon after being assembled, and inhibits an increase of internal pressure during discharge.

摘要翻译： 一种用于碱性二次电池的吸氢合金电极。 该电极由含有镍的吸氢合金制成，该合金已用含有镍螯合剂的酸性溶液处理过。 吸氢合金电极具有良好的活性，并且具有作为负极的吸氢合金电极的镍氢电池在组装后不久就具有大的高倍率放电容量，并且抑制放电期间的内部压力增加。

公开(公告)号：US5629000A

公开(公告)日：1997-05-13

申请号：US562150

申请日：1995-11-22

申请人： Yoshinori Matsuura ,  Mitsuzo Nogami ,  Mamoru Kimoto ,  Nobuyuki Higashiyama ,  Yasushi Kuroda ,  Ikuo Yonezu ,  Koji Nishio ,  Toshihiko Saito

发明人： Yoshinori Matsuura ,  Mitsuzo Nogami ,  Mamoru Kimoto ,  Nobuyuki Higashiyama ,  Yasushi Kuroda ,  Ikuo Yonezu ,  Koji Nishio ,  Toshihiko Saito

IPC分类号： H01M4/24 ,  H01M4/38 ,  H01M4/02

CPC分类号： H01M4/383 ,  H01M4/242 ,  Y10S420/90 ,  Y10T29/49115

摘要： A hydrogen-absorbing alloy electrode for metal hydride alkaline batteries uses as hydrogen-absorbing material a powder of a rare earth element-nickel hydrogen-absorbing alloy obtained by pulverizing thin strips of said alloy prepared by single roll process and having an average thickness of 0.08 to 0.35 mm and a minimum size of crystal grains present in the roll-surface size of at least 0.2 .mu.m and a maximum size of crystal grains in the open-surface side of not more than 20 .mu.m. A process for producing the above electrode is also provided. The electrode can provide, when used as negative electrode, metal hydride alkaline batteries which are excellent in both high-rate discharge characteristics at an initial period of charge-discharge cycles and charge-discharge cycle characteristics.

摘要翻译： 用于金属氢化物碱性电池的吸氢合金电极使用通过粉碎由单辊法制备的并且平均厚度为0.08的所述合金的薄带而获得的稀土元素 - 镍吸氢合金的粉末作为吸氢材料 至0.35μm，在辊面尺寸中存在的晶粒的最小尺寸为0.2μm以上，开放面侧的晶粒的最大尺寸为20μm以下。 还提供了制造上述电极的方法。 当用作负极时，电极可以提供在充放电循环的初始阶段和充放电循环特性两种高速放电特性都优异的金属氢化物碱性电池。

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。