公开(公告)号：US20030140483A1

公开(公告)日：2003-07-31

申请号：US10335869

申请日：2003-01-03

申请人： TOSHIBA BATTERY CO., LTD.

发明人： Makoto Wakabayashi ,  Kunihiko Miyamoto ,  Tetsuya Yamane ,  Naomi Bando ,  Kiyoshi Ishitsuka ,  Ken-Ichi Kanno ,  Hidekazu Oppata

IPC分类号： H01M010/04 ,  H01M004/32 ,  H01M004/52 ,  H01M004/62

CPC分类号： H01M4/244 ,  H01M4/32 ,  H01M4/364 ,  H01M4/38 ,  H01M4/52 ,  H01M10/24 ,  H01M10/26 ,  H01M10/42 ,  H01M10/446 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2010/4292 ,  Y10T29/49108

摘要： An alkaline secondary battery which is characterized in that it comprises, a positive electrode containing nickel hydroxide having a value of 0.8null or more in the half-width of a peak in the (101) plane thereof as measured by X-ray powder diffraction (2null) using CunullKnull ray, and 4.0 to 15% by weight of at least one material selected from the group consisting of zinc and zinc compounds, and an alkali electrolyte, the ratio of which to theoretical capacity of the positive electrode being 0.7 to 2.0 cm3/Ah, the weight of the at least one material being one calculated as zinc element and based on the weight of the nickel hydroxide.

摘要翻译： 一种碱性二次电池，其特征在于，其包含通过X射线粉末衍射测定的（101）面中的峰的半值宽度为0.8°以上的氢氧化镍的正极 使用Cu-Kalpha射线，以及4.0〜15重量％的选自锌和锌化合物的至少一种材料和碱电解质，其与正极的理论容量之比为0.7〜 2.0cm 3 / Ah，所述至少一种材料的重量为以锌元素计算的重量，并且基于氢氧化镍的重量。

公开(公告)号：US20010024744A1

公开(公告)日：2001-09-27

申请号：US09749789

申请日：2000-12-28

申请人： TOSHIBA BATTERY CO., LTD.

发明人： Kunihiko Miyamoto ,  Naomi Bando

IPC分类号： H01M004/32

CPC分类号： H01M4/52 ,  H01M10/28 ,  H01M10/342

摘要： Provided is a active material for positive electrode for an alkaline secondary cell, which advantageously exhibits improved overdischarge characteristics, improved utilization of the active material and an improved effect of suppressing the rise in cell internal pressure, a method for producing the same, and an alkaline secondary cell using the above active material for positive electrode, especially a nickel-hydrogen secondary cell. The above active material comprises nickel hydroxide particles each having a surface to which a cobalt oxide sticks, wherein the cobalt oxide contains 20 to 40 % by mole of cobalt(II) oxide, wherein the nickel hydroxide particles form an eutectic together with Co and Zn or/and Y, and the Co content of the eutectic is 2 % by mass or less, and the nickel hydroxide particles have a value of a half width of the peak ascribed to the (101) crystal face diffraction of 0.8null/2null(Cu-Knull) or more as measured by powder X-ray diffractometry.

摘要翻译： 本发明提供一种碱性二次电池用正极活性物质，其有利地具有改善的过放电特性，改善了活性物质的利用率和改善了抑制电池内部压力上升的效果，其制备方法和碱 使用上述活性物质的正极，特别是镍氢二次电池的二次电池。 上述活性物质包括各自具有钴氧化物粘附表面的氢氧化镍颗粒，其中氧化钴含有20-40％（摩尔）氧化钴（II），其中氢氧化镍颗粒与Co和Zn一起形成共晶体 或/和Y，共晶的Co含量为2质量％以下，氢氧化镍粒子的（101）晶面衍射峰值的半值宽度为0.8°/2θ（ Cu-Kalpha）或更多，通过粉末X射线衍射测量。