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    Non-aqueous electrolyte secondary battery
    1.
    发明申请
    Non-aqueous electrolyte secondary battery 审中-公开
    非水电解质二次电池

    公开(公告)号：US20090061311A1

    公开(公告)日：2009-03-05

    申请号：US11887144

    申请日：2006-02-03

    申请人： Masaharu Itaya ,  Atsushi Fukui ,  Shouichirou Sawa ,  Yasuyuki Kusumoto ,  Masahisa Fujimoto

    发明人： Masaharu Itaya ,  Atsushi Fukui ,  Shouichirou Sawa ,  Yasuyuki Kusumoto ,  Masahisa Fujimoto

    IPC分类号： H01M4/62 ,  H01M6/04

    CPC分类号： H01M4/62 ,  H01M4/134 ,  H01M4/386 ,  H01M10/052 ,  H01M10/44 ,  H01M2004/021

    摘要： An object of the invention is to provide a non-aqueous electrolyte secondary battery that allows a good charge/discharge cycle characteristic to be obtained. The non-aqueous electrolyte secondary battery according to the invention includes a negative electrode containing silicon as a negative electrode active material, a positive electrode, and a non-aqueous electrolyte, the average particle size of the negative electrode active material is not less than 5 μm nor more than 20 μm, and the weight of the negative electrode active material is at least 10% of the weight of the non-aqueous electrolyte.

    摘要翻译： 本发明的目的是提供一种能够获得充分/放电循环特性良好的非水电解质二次电池。 根据本发明的非水电解质二次电池包括含有硅作为负极活性物质的负极，正极和非水电解质，负极活性物质的平均粒径不小于5 妈妈也不超过20个，负极活性物质的重量为非水电解质重量的至少10重量％。

    Lithium secondary battery
    4.
    发明申请
    Lithium secondary battery 审中-公开
    锂二次电池

    公开(公告)号：US20070202365A1

    公开(公告)日：2007-08-30

    申请号：US11709252

    申请日：2007-02-22

    申请人： Shouichirou Sawa ,  Kazuyuki Satou ,  Atsushi Fukui ,  Yasuyuki Kusumoto ,  Maruo Kamino

    发明人： Shouichirou Sawa ,  Kazuyuki Satou ,  Atsushi Fukui ,  Yasuyuki Kusumoto ,  Maruo Kamino

    IPC分类号： H01M14/00 ,  H01M4/58 ,  H01M4/62

    CPC分类号： H01M4/134 ,  H01M4/622 ,  H01M4/661 ,  H01M2004/021 ,  H01M2010/4292

    摘要： In a lithium secondary battery using negative electrode active material particles containing silicon, excellent charge-discharge characteristics are achieved and swelling of the negative electrode is minimized. A lithium secondary battery has a positive electrode containing a positive electrode active material, a negative electrode containing an active material layer and a current collector made of a conductive metal foil, and a non-aqueous electrolyte. The active material layer has a binder and active material particles containing silicon, and is formed by sintering the active material layer on a current collector surface in a non-oxidizing atmosphere. The active material particles have an average particle size of from 7.5-15 μm and a particle size distribution such that 60 volume % or more of the active material particles falls within the ±40% range of the average particle size, and the lithium secondary battery has a negative/positive electrode capacity ratio of 1.7 or greater.

    摘要翻译： 在使用含有硅的负极活性物质粒子的锂二次电池中，实现了优异的充放电特性，并使负极的膨胀最小化。 锂二次电池具有包含正极活性物质的正极，含有活性物质层的负极和由导电性金属箔构成的集电体和非水电解质。 活性物质层具有粘合剂和含有硅的活性物质颗粒，并且通过在非氧化性气氛中在集电体表面上烧结活性物质层而形成。 活性物质粒子的平均粒径为7.5〜15μm，粒径分布为60体积％以上的活性物质粒子落入平均粒径的±40％范围内，锂二次电池 负极/正极容量比为1.7以上。

    Negative electrode for lithium secondary battery, method of manufacturing the electrode, and lithium secondary battery
    9.
    发明授权
    Negative electrode for lithium secondary battery, method of manufacturing the electrode, and lithium secondary battery 失效
    锂二次电池用负极，电极的制造方法以及锂二次电池

    公开(公告)号：US08343657B2

    公开(公告)日：2013-01-01

    申请号：US11657092

    申请日：2007-01-24

    申请人： Hiroshi Minami ,  Atsushi Fukui ,  Yasuyuki Kusumoto

    发明人： Hiroshi Minami ,  Atsushi Fukui ,  Yasuyuki Kusumoto

    IPC分类号： H01M4/58

    CPC分类号： H01M4/0435 ,  H01M4/0471 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/621 ,  H01M4/625 ,  H01M4/661

    摘要： In a lithium secondary battery using a negative electrode having a negative electrode mixture layer formed on a surface of a negative electrode current collector, the mixture layer made of a binder and negative electrode active material particles of silicon and/or a silicon alloy, charge-discharge cycle performance is improved without degrading the capacity per unit volume, by making the negative electrode mixture layer sufficiently adhere to the negative electrode current collector. The negative electrode has a negative electrode mixture layer composed of a binder and negative electrode active material particles of silicon and/or a silicon alloy. The negative electrode mixture layer is formed on a surface of the negative electrode current collector by sintering. Negative electrode active material particles are partially embedded in the negative electrode current collector.

    摘要翻译： 在使用在负极集电体的表面形成有负极混合层的负极的锂二次电池中，由粘合剂构成的混合层和硅和/或硅合金的负极活性物质粒子， 通过使负极混合物层充分地粘附到负极集电体，可以提高放电循环性能，而不降低单位体积的容量。 负极具有由粘合剂和硅和/或硅合金的负极活性物质粒子构成的负极混合层。 通过烧结在负极集电体的表面上形成负极合剂层。 负极活性物质粒子部分嵌入负极集电体。

    Lithium secondary battery and method for manufacturing the same
    10.
    发明授权
    Lithium secondary battery and method for manufacturing the same 有权
    锂二次电池及其制造方法

    公开(公告)号：US08338022B2

    公开(公告)日：2012-12-25

    申请号：US11001192

    申请日：2004-12-02

    申请人： Atsushi Fukui ,  Hiroshi Minami ,  Shoichiro Sawa ,  Mariko Torimae ,  Yasuyuki Kusumoto ,  Maruo Kamino

    发明人： Atsushi Fukui ,  Hiroshi Minami ,  Shoichiro Sawa ,  Mariko Torimae ,  Yasuyuki Kusumoto ,  Maruo Kamino

    IPC分类号： H01M2/02

    CPC分类号： H01M10/052 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/134 ,  H01M4/386 ,  H01M4/525 ,  H01M4/622 ,  H01M4/661 ,  H01M4/70 ,  H01M10/0587 ,  H01M2004/021 ,  Y10T29/49108

    摘要： A lithium secondary battery of the present invention comprises a positive electrode formed by disposing a positive-electrode mixture layer containing a positive-electrode active material and a positive-electrode binder, on a surface of a positive-electrode current collector; a negative electrode formed by sintering a negative-electrode mixture layer containing a negative-electrode binder and a negative-electrode active material containing silicon and/or a silicon alloy, disposed on a surface of a negative-electrode current collector; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte; wherein an electrode unit obtained by setting the positive electrode and the negative electrode opposed to each other through the separator and rolling them in spirally rolled state is placed in a cylindrical battery container and wherein a curvature radius of the negative-electrode mixture layer opposed to the positive-electrode mixture layer through the separator in the spirally rolled state is 1.5 mm or larger.

    摘要翻译： 本发明的锂二次电池包括在正极集电体的表面上设置含有正极活性物质和正极粘合剂的正极合剂层而形成的正极， 通过在负极集电体的表面上烧结含有负极粘合剂的负极混合层和含有硅和/或硅合金的负极活性物质而形成的负极， 设置在所述正极和所述负极之间的隔膜; 和非水电解质; 其特征在于，将通过隔板相对的正极和负极通过将螺旋卷绕状态进行轧制而得到的电极单元配置在圆筒状的电池容器中，其中与负极混合层相对的曲率半径 螺旋状卷取状态的正极混合层通过隔膜的厚度为1.5mm以上。