公开(公告)号：US5629111A

公开(公告)日：1997-05-13

申请号：US529980

申请日：1995-09-19

申请人： Akifumi Yamawaki ,  Shinsuke Nakahori ,  Motoo Tadokoro ,  Takeo Hamamatsu ,  Yoshitaka Baba

发明人： Akifumi Yamawaki ,  Shinsuke Nakahori ,  Motoo Tadokoro ,  Takeo Hamamatsu ,  Yoshitaka Baba

IPC分类号： H01M4/42 ,  H01M4/32 ,  H01M4/52 ,  H01M10/30 ,  H01M4/58

CPC分类号： H01M4/52

摘要： Fine-grained nickel electrode active material, each of which contributing to electrode reaction; production method of the fine-grained nickel electrode active material; and a nickel alkali storage cell of high capacity which is excellent in over discharge characteristics. In order to produce the fine-grained nickel electrode active material, fine-grained nickel hydroxide is precipitated by adding a given amount of alkali to solution in which at least a nickel compound is dissolved while the solution is stirred. Each of the fine-grained nickel hydroxide has pores with 20 vol % or more of a combined volume of the pores being composed of pores of diameter 60 .ANG. or greater. Next, a given amount of alkali is gradually added to suspension including the fine-grained nickel hydroxide and dissolved cobalt compound so that cobalt hydroxide is precipitated on the external surface of the fine-grained nickel hydroxide. The fine-grained nickel electrode active material is produced in the above mentioned way. Each of the fine-grained nickel electrode active material comprises a nickel hydroxide and cobalt oxide having distorted crystal structure and oxidation number higher than +2. The nickel hydroxide has pores whose diameters are 60 .ANG. or greater. And the volume of such pores amounts to 20 vol % or more of the combined volume of all of the pores.

摘要翻译： 细粒镍电极活性物质，各有助于电极反应; 细粒镍电极活性物质的制备方法; 以及高放电特性优异的高容量镍碱性电池。 为了生产细粒镍电极活性材料，在搅拌溶液的过程中，向至少溶解有镍化合物的溶液中加入规定量的碱，使细粒状氢氧化镍析出。 每种细粒度氢氧化镍具有孔直径为60以上的孔的组合体积的20vol％以上的孔。 接着，向包含细粒度氢氧化镍和溶解的钴化合物的悬浮液中逐渐加入给定量的碱，使得氢氧化钴在细粒状氢氧化镍的外表面析出。 以上述方式制造细粒镍电极活性物质。 每种细粒镍电极活性材料都包含氢氧化镍和氧化钴，晶体结构变形，氧化数高于+2。 氢氧化镍具有直径为60或更大的孔。 这些孔的体积相当于所有孔的组合体积的20体积％以上。

公开(公告)号：US5691086A

公开(公告)日：1997-11-25

申请号：US598598

申请日：1996-02-12

申请人： Yoshitaka Baba ,  Motoo Tadokoro ,  Takeo Hamamatsu ,  Akifumi Yamawaki

发明人： Yoshitaka Baba ,  Motoo Tadokoro ,  Takeo Hamamatsu ,  Akifumi Yamawaki

IPC分类号： H01M4/28 ,  H01M4/32 ,  H01M4/52 ,  H01M10/30 ,  H01M10/34 ,  H01M4/02

CPC分类号： H01M4/28 ,  H01M4/32 ,  H01M4/52 ,  H01M10/30 ,  H01M10/345 ,  Y02E60/124

摘要： A nickel active material for an alkali storage cell whose surface is covered with a cobalt compound, wherein the diffusion and permeation into the nickel hydroxide mother particles of cobalt compound during excessive discharging, which act to reduce the active material efficiency and the excessive discharging characteristics, are prevented. This is achieved by having a covering layer, including one or more of the following metal compounds; an aluminum compound, a magnesium compound, an indium compound and a zinc compound, in addition to a cobalt compound, formed on the surface of a mother particle of nickel hydroxide, and by heat treating the covered mother particles in the presence of alkali and oxygen so as to convert the cobalt compound into a compound of cobalt where an oxidization number of cobalt is greater than 2.

摘要翻译： 一种表面被钴化合物覆盖的碱性蓄电池用镍活性物质，其特征在于，在过量放电中扩散渗透到钴化合物的氢氧化镍母粒中，其作用是降低活性物质效率和过度的放电特性， 被阻止 这通过具有包括一种或多种以下金属化合物的覆盖层来实现; 铝化合物，镁化合物，铟化合物和锌化合物，除了形成在氢氧化镍母体表面上的钴化合物之外，还在碱和氧的存在下热处理被覆盖的母体颗粒 以便将钴化合物转化为钴的化合物，其中钴的氧化数大于2。

公开(公告)号：US5702762A

公开(公告)日：1997-12-30

申请号：US665703

申请日：1996-06-18

申请人： Yoshitaka Baba ,  Motoo Tadokoro ,  Akifumi Yamawaki

发明人： Yoshitaka Baba ,  Motoo Tadokoro ,  Akifumi Yamawaki

IPC分类号： H01M4/32 ,  H01M4/52 ,  B05D7/00 ,  B05D3/12 ,  B05D1/02

CPC分类号： H01M4/32 ,  H01M4/52

摘要： In a method of manufacturing a nickel active material, nickel hydroxide particles coated with cobalt hydroxide are put on the mesh disk 4 of the fluidized granulator 1. Then, hot air is continuously supplied from outside through the hot air inlet 5, while air inside the fluidized granulator 5 is continuously emitted through the air outlet 8. At the same time, the nickel hydroxide particles are stirred with the stirring fan 3 and further dispersed by a hot air current. In this condition, an alkali aqueous solution is sprayed on the nickel hydroxide particles through the spray nozzle 7 by the pump 9. After the spray, the nickel hydroxide particles are further stirred in hot air so as to complete an alkali heat treatment.

摘要翻译： 在制造镍活性物质的方法中，将氢氧化钴颗粒涂覆在流化造粒机1的网盘4上。然后，从外部通过热空气入口5连续地供给热空气，同时， 流化造粒机5通过出气口8连续排出。同时，氢氧化镍颗粒与搅拌风机3一起搅拌并进一步通过热气流分散。 在这种情况下，通过泵9将碱性水溶液通过喷嘴7喷射到氢氧化镍颗粒上。在喷雾之后，将氢氧化镍颗粒在热空气中进一步搅拌，以完成碱热处理。

公开(公告)号：US5940946A

公开(公告)日：1999-08-24

申请号：US849890

申请日：1997-06-17

申请人： Akifumi Yamawaki ,  Motoo Tadokoro

发明人： Akifumi Yamawaki ,  Motoo Tadokoro

IPC分类号： B22F3/11 ,  C25D1/08 ,  H01M4/80 ,  H01M6/10 ,  H01M10/24

CPC分类号： B22F3/1137 ,  B22F3/1103 ,  C25D1/08 ,  H01M4/80 ,  H01M4/808 ,  H01M10/24 ,  H01M6/10 ,  Y10T29/10

摘要： A belt-shaped spongelike organic high polymer sheet is subjected to stretching forces in the longitudinal and lateral directions so as to transform the approximately spindle-shaped organic high polymer units which compose the organic high polymer sheet. After this, a metal is put into voids inside the organic high polymer sheet. Then, the organic high polymer is eliminated by baking it, and the metal is sintered. As a result, a spongelike metal substrate is completed whose carbon content is 0.5% by weight or less and whose metallic lattices have a longer length/shorter length ratio of 1.7 or below. The spongelike metal substrate is filled with electrode active material to form an electrode, which is combined with a counter electrode and a separator, and coiled in the direction of the longer lengths of the lattices to form a coiled electrode assembly. The electrode assembly is used to manufacture an alkali storage cell.

摘要翻译： PCT No.PCT / JP96 / 02993 Sec。 371日期：1997年6月17日 102（e）日期1997年6月17日PCT 1996年10月16日PCT PCT。 公开号WO97 / 15088 日期1997年04月24日一种带状海绵状有机高分子片材在纵向和横向上受到拉伸力，以便转化构成有机高分子聚合物片材的大致心形的有机高分子单元。 之后，将金属放入有机高分子片内的空隙中。 然后，通过焙烧除去有机高分子，并烧结金属。 结果，完成了碳含量为0.5重量％以下且其金属网格具有较长长度/短长度比为1.7以下的海绵状金属基材。 海绵状金属基材填充有电极活性材料，以形成与对电极和隔膜结合的电极，并且沿着较长长度的晶格的方向盘绕以形成线圈电极组件。 电极组件用于制造碱性蓄电池。

公开(公告)号：US06368748B1

公开(公告)日：2002-04-09

申请号：US09531600

申请日：2000-03-20

申请人： Masao Takee ,  Motoo Tadokoro ,  Tadashi Ise ,  Akifumi Yamawaki

发明人： Masao Takee ,  Motoo Tadokoro ,  Tadashi Ise ,  Akifumi Yamawaki

IPC分类号： H01M452

CPC分类号： H01M10/345 ,  H01M4/32 ,  H01M4/52 ,  H01M10/30

摘要： A nickel-metal hydride storage cell is composed of a non-sintered positive electrode which is filled with a nickel active material whose particles are coated with cobalt compound layers of divalent or greater and a metal hydride electrode which is filled with a surface-treated hydrogen-absorbing alloy. In the cell, the positive electrode non-reactive capacity rate (represented by the Equation 1) and the negative electrode charge depth (represented by the Equation 2) after the initial charge/discharge are 16% or lower, and 80% or lower, respectively. This construction makes it possible to take larger actual cell capacity by setting the value of the negative electrode charge depth to the degree which causes no rise in the cell internal pressure, thereby expanding the capacity of the cell. positive electrode non-reactive capacity rate %=(positive electrode theoretical capacity−actual cell capacity)/positive electrode theoretical capacity×100  Eq. 1; negative electrode charge depth %=(negative electrode remaining capacity+actual cell capacity)/negative electrode whole capacity×100  Eq. 2.

摘要翻译： 镍氢蓄电池由非烧结正电极组成，其中填充有用二价以上的钴化合物层涂覆其颗粒的镍活性材料和填充有表面处理氢的金属氢化物电极 吸收合金。 在电池中，初始充放电后的正极非反应容量率（由式1表示）和负极电荷深度（以式2表示）为16％以下，80％以下， 分别。 这种结构使得可以通过将负极电荷深度的值设定为不使电池内部压力升高的程度来获得更大的实际电池容量，从而扩大电池的容量。

公开(公告)号：US06274275B1

公开(公告)日：2001-08-14

申请号：US09285727

申请日：1999-04-05

申请人： Akifumi Yamawaki ,  Motoo Tadokoro

发明人： Akifumi Yamawaki ,  Motoo Tadokoro

IPC分类号： H01M480

CPC分类号： B22F3/1137 ,  B22F3/1103 ,  C25D1/08 ,  H01M4/80 ,  H01M4/808 ,  H01M6/10 ,  H01M10/24 ,  Y10T29/10

摘要： A belt-shaped spongelike organic high polymer sheet is subjected to stretching forces in the longitudinal and lateral directions so as to transform the approximately spindle-shaped organic high polymer units which compose the organic high polymer sheet. After this, a metal is put into voids inside the organic high polymer sheet. Then, the organic high polymer is eliminated by baking it, and the metal is sintered. As a result, a spongelike metal substrate is completed whose carbon content is 0.5% by weight or less and whose metallic lattices have a longer length/shorter length ratio of 1.7 or below. The spongelike metal substrate is filled with electrode active material to form an electrode, which is combined with a counter electrode and a separator, and coiled in the direction of the longer lengths of the lattices to form a coiled electrode assembly. The electrode assembly is used to manufacture an alkali storage cell.

摘要翻译： 带状海绵状有机高分子片材在纵向和横向上受到拉伸力，以便转化构成有机高分子聚合物片材的大致心形的有机高分子单元。 之后，将金属放入有机高分子片内的空隙中。 然后，通过焙烧除去有机高分子，并烧结金属。 结果，完成了碳含量为0.5重量％以下且其金属网格具有较长长度/短长度比为1.7以下的海绵状金属基材。 海绵状金属基材填充有电极活性材料，以形成与对电极和隔膜结合的电极，并且沿着较长长度的晶格的方向盘绕以形成线圈电极组件。 电极组件用于制造碱性蓄电池。

公开(公告)号：US06602640B1

公开(公告)日：2003-08-05

申请号：US09669573

申请日：2000-09-26

申请人： Masaru Kihara ,  Motoo Tadokoro ,  Yoshitaka Baba

发明人： Masaru Kihara ,  Motoo Tadokoro ,  Yoshitaka Baba

IPC分类号： H01M1024

CPC分类号： H01M4/366 ,  H01M4/32 ,  H01M4/52 ,  H01M10/30 ,  Y02E60/124 ,  Y02P70/54

摘要： An alkaline storage battery comprising a positive electrode active material mainly composed of nickel hydroxide, characterized in that the nickel hydroxide is a higher order nickel hydroxide covered with a cobalt compound on the surface thereof or in the vicinity thereof and the higher order nickel hydroxide is provided with at least one compound selected from the group consisting of yttrium compound, erbium compound and ytterbium compound on the surface thereof or in the vicinity

摘要翻译： 一种碱性蓄电池，其特征在于，包括主要由氢氧化镍组成的正极活性物质，其特征在于，所述氢氧化镍是在其表面或其附近被钴化合物覆盖的高级氢氧化镍，提供高级氢氧化镍 与选自钇化合物，铒化合物和镱化合物的至少一种化合物在其表面或附近

公开(公告)号：US06203945B1

公开(公告)日：2001-03-20

申请号：US09109070

申请日：1998-07-02

申请人： Yoshitaka Baba ,  Motoo Tadokoro ,  Takayuki Yano

发明人： Yoshitaka Baba ,  Motoo Tadokoro ,  Takayuki Yano

IPC分类号： H01M432

CPC分类号： H01M4/52

摘要： A nickel hydroxide active material for use in an alkaline storage cell, the active material being essentially composed of nickel hydroxide particles covered with a cobalt compound adhered to their surfaces, wherein the cobalt compound is disordered in a crystal structure and formed in a higher order state containing alkali cation, and wherein the nickel hydroxide is in the form of a higher order nickel compound having an average oxidation value of 2.15 to 2.40.

摘要翻译： 一种用于碱性蓄电池的氢氧化镍活性物质，所述活性物质基本上由附着在其表面上的钴化合物覆盖的氢氧化镍颗粒组成，其中所述钴化合物在晶体结构中无序并形成为高级态 含有碱金属阳离子，其中氢氧化镍为平均氧化值为2.15〜2.40的高级镍化合物的形式。

公开(公告)号：US06605389B2

公开(公告)日：2003-08-12

申请号：US09812696

申请日：2001-03-21

申请人： Yoshitaka Baba ,  Motoo Tadokoro

发明人： Yoshitaka Baba ,  Motoo Tadokoro

IPC分类号： H01M432

CPC分类号： H01M4/366 ,  C01G51/04 ,  C01G53/00 ,  C01G53/04 ,  C01P2004/54 ,  C01P2004/84 ,  C01P2006/40 ,  H01M4/32 ,  H01M4/52 ,  H01M10/30 ,  Y02E60/124 ,  Y02P70/54 ,  Y10T29/49108

摘要： An alkaline storage battery includes a positive electrode active material containing nickel hydroxide as a main component. A part of the surface of the nickel hydroxide is unevenly covered with a cobalt compound having an average oxidation number of larger than +2 and containing alkaline cations. Since only a part of the surface of the nickel hydroxide is covered with the cobalt compound, the nickel hydroxide not covered with the cobalt compound is brought into direct contact with the electrolyte, thus improving the high rate discharging characteristic. Since a part of the surface of the nickel hydroxide is covered with the high-order cobalt compound containing alkaline cations, the high-order cobalt compound with high conductivity produces a highly conductive network within the positive electrode so that the rate of using the active material is improved. In this configuration, the alkaline storage battery with high capacity and excellent high rate discharging characteristic can be provided by using a nickel hydroxide active material which permits nickel hydroxide to be brought into direct contact with an electrolyte regardless with high order cobalt oxide on the surface of nickel hydroxide.

摘要翻译： 碱性蓄电池包括以氢氧化镍为主要成分的正极活性物质。 氢氧化镍表面的一部分不均匀地被平均氧化数大于+2并含有碱性阳离子的钴化合物覆盖。 由于只有一部分氢氧化镍的表面被钴化合物覆盖，所以未被钴化合物覆盖的氢氧化镍与电解质直接接触，从而提高了高放电特性。 由于氢氧化镍表面的一部分被含有碱性阳离子的高级钴化合物覆盖，所以高导电性的高级钴化合物在正极内产生高导电性网络，使得使用活性物质的速率 改进了 在这种结构中，可以通过使用氢氧化镍活性物质来提供具有高容量和优异的高倍率放电特性的碱性蓄电池，氢氧化镍活性物质使得氢氧化镍与电解质直接接触，而不管高阶氧化钴在表面上 氢氧化镍。

公开(公告)号：US06171728B2

公开(公告)日：2001-01-09

申请号：US09110861

申请日：1998-07-07

申请人： Yoshitaka Baba ,  Motoo Tadokoro ,  Takayuki Yano

发明人： Yoshitaka Baba ,  Motoo Tadokoro ,  Takayuki Yano

IPC分类号： H01M452

CPC分类号： H01M4/52 ,  H01M4/32 ,  Y10T29/49115

摘要： A nickel electrode for an alkaline storage cell manufactured by the steps of precipitating cobalt hydroxide on the surface of a first nickel active material essentially composed of nickel hydroxide, subjecting the first nickel active material to heat treatment under the presence of an alkaline solution and oxygen to that the cobalt hydroxide precipitated on the first nickel active material is disordered to its crystal structure and is formed in a higher order cobalt compound containing alkaline cation, and mixing the first nickel active material subjected to the alkali heat treatment with a second nickel hydroxide active material essentially composed of nickel hydroxide without forming any conductive substance of lower in dissolubility to the alkaline solution.

摘要翻译： 一种碱性蓄电池用镍电极，其特征在于，在基本上由氢氧化镍构成的第一镍活性物质的表面析出氢氧化钴，在碱溶液和氧气的存在下进行第一镍活性物质的热处理， 沉淀在第一镍活性材料上的氢氧化钴无定形为其晶体结构，并且形成为含有碱性阳离子的较高级的钴化合物，并将进行碱热处理的第一镍活性材料与第二氢氧化镍活性物质 基本上由氢氧化镍组成，而不形成对碱性溶液具有较低溶解度的任何导电物质。