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1. 发明授权

US07976986B2 Sintered substrate and alkaline storage battery using the substrate 失效
标题翻译：烧结基板和碱性蓄电池使用基板
公开(公告)号：US07976986B2
公开(公告)日：2011-07-12
申请号：US12057825
申请日：2008-03-28
申请人： Chihiro Fujisawa , Atsuya Furuichi , Kazuki Shimozono , Kohei Karasumi , Yasushiro Kudo , Makoto Ochi
发明人： Chihiro Fujisawa , Atsuya Furuichi , Kazuki Shimozono , Kohei Karasumi , Yasushiro Kudo , Makoto Ochi
IPC分类号： H01M4/80 , B22F3/11 , B22F7/04
CPC分类号： H01M4/26 , H01M4/246 , H01M4/801 , H01M10/28 , Y02E60/124 , Y02P70/54 , Y10T29/10 , Y10T428/1209
摘要： A sintered substrate is configured such that pores having a pore size (pore radius) of from 5 μm to 7 μm have a peak volume fraction with respect to the total pore volume of the sintered substrate, and pores having a pore radius of greater than 8.5 μm has a volume fraction of 11% or less with respect to the total pore volume of the sintered substrate. The sintered substrate has a smaller number of large-sized pores than conventional sintered substrates and a more uniform pore size distribution, and therefore shows a sufficient strength even when the porosity is increased. In addition, a cadmium negative electrode employing the sintered substrate shows excellent gas absorption capability and therefore can reduce the internal pressure of the battery during charge.
摘要翻译：烧结基板被构造为使得具有5μm至7μm的孔径（孔半径）的孔相对于烧结基板的总孔体积具有峰体积分数，并且具有大于8.5的孔半径的孔 μm相对于烧结基板的总孔体积的体积分数为11％以下。烧结基板具有比常规烧结基板更小数量的大孔，并且孔尺寸分布更均匀，因此即使当孔隙率增加时也显示出足够的强度。此外，使用烧结基板的镉负极表现出优异的气体吸收能力，因此可以降低充电期间电池的内部压力。

2. 发明授权

US06740449B2 Nickel electrode for alkaline storage battery and method of manufacturing the same 有权
标题翻译：碱性蓄电池用镍电极及其制造方法
公开(公告)号：US06740449B2
公开(公告)日：2004-05-25
申请号：US09813998
申请日：2001-03-22
申请人： Chihiro Fujisawa , Takuya Tamagawa , Yoichiro Shibata
发明人： Chihiro Fujisawa , Takuya Tamagawa , Yoichiro Shibata
IPC分类号： H01M452
CPC分类号： H01M4/366 , H01M4/32 , H01M4/38
摘要： A nickel electrode for an alkaline storage battery is made by filling a conductive porous member with an active material including a main active material layer substantially made of nickel hydroxide and containing cobalt in a state of a solid solution, and a compound layer containing at least one element selected from the group consisting of calcium, aluminum, strontium, scandium, yttrium, and lanthanoide series, the compound layer being formed on a surface of the main active material layer. A metal molar ratio of cobalt contained in the main active material layer to nickel contained in the main active material layer is in a range of 0.5% to 3.0%, and a metal molar ratio of the at least one element contained in the compound layer to nickel contained in the active material is in a range of 0.3% to 5.0%.
摘要翻译：用于碱性蓄电池的镍电极是通过用活性材料填充导电性多孔构件制成的，所述活性材料包括基本上由氢氧化镍制成的主要活性物质层，并且以固溶体状态含有钴，以及含有至少一种选自钙，铝，锶，钪，钇和镧系元素的元素，所述化合物层形成在所述主活性物质层的表面上。主活性物质层中所含的钴与包含在主活性物质层中的镍的金属摩尔比在0.5〜3.0％的范围内，化合物层中含有的至少一种元素的金属摩尔比与活性物质中所含的镍为0.3〜5.0％的范围。

3. 发明授权

US06613107B2 Method of producing nickel electrode for alkaline storage batteries 有权
公开(公告)号：US06613107B2
公开(公告)日：2003-09-02
申请号：US09968000
申请日：2001-10-02
申请人： Takuya Tamagawa , Yoichiro Shibata , Chihiro Fujisawa , Katsuya Ito
发明人： Takuya Tamagawa , Yoichiro Shibata , Chihiro Fujisawa , Katsuya Ito
IPC分类号： H01M600
CPC分类号： H01M4/52 , H01M4/32 , Y10T29/49108 , Y10T29/49115
摘要： A method of producing a nickel electrode for an alkaline storage battery, comprising: an active-material loading step comprising preparing an active-material loaded plate electrode by loading an active-material containing nickel hydroxide as its principal component into the pores of said porous electrically conductive substrate; an immersion step comprising immersing said active-material loaded plate electrode into an impregnation solution comprising an acid salt solution containing at least one element selected from the group consisting of Ca, Sr, Sc, Y, Al, Mn, and lanthanides; and an alkali treatment step comprising forming a hydroxide layer on the surface of the electrode plate by converting the acid salt into a hydroxide by immersing said plate electrode into an alkaline solution; provided that the temperature of the impregnation solution is controlled in a range of from 40 to 90° C., and that the pH value of impregnating solution is controlled to a range of from 4 to 6. Thus, it is provided a nickel electrode free from a drop in battery capacity and yet having excellent high temperature characteristics by controlling the amount of elution of the loaded active material even when immersed in an acid salt solution.

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