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    Lithium secondary battery and method for producing the same
    1.
    发明授权
    Lithium secondary battery and method for producing the same 有权
    锂二次电池及其制造方法

    公开(公告)号：US09048502B2

    公开(公告)日：2015-06-02

    申请号：US13993892

    申请日：2011-12-07

    申请人： Shouichiro Sawa ,  Atsushi Fukui ,  Yasunori Watanabe ,  Taizou Sunano

    发明人： Shouichiro Sawa ,  Atsushi Fukui ,  Yasunori Watanabe ,  Taizou Sunano

    IPC分类号： H01M10/04 ,  H01M4/134 ,  H01M10/052 ,  H01M10/0587 ,  H01M4/02 ,  H01M4/62

    CPC分类号： H01M10/0431 ,  H01M4/134 ,  H01M4/621 ,  H01M10/0422 ,  H01M10/052 ,  H01M10/0587 ,  H01M2004/021 ,  H01M2004/025 ,  H01M2004/027 ,  H01M2004/028 ,  Y02E60/122

    摘要： A lithium secondary battery and a method for producing the lithium secondary battery. The lithium secondary battery includes a negative electrode 1 in which negative electrode mixture layers 2 and 3 that contain active material particles containing silicon and/or a silicon alloy and a binder are disposed on the surfaces of a current collector 4. A electrode body is formed by spirally winding, from inside to outside, a laminate body; and in an outer end portion of the negative electrode 1, the negative electrode mixture layers 2 and 3 have tapering portions 2a and 3a whose thicknesses decrease toward ends 2b and 3b of the negative electrode mixture layers 2 and 3; and oozing portions 2d and 3d mainly containing the binder are formed at the tips of the tapering portions 2a and 3a of the negative electrode mixture layers 2 and 3.

    摘要翻译： 锂二次电池及其制造方法。 锂二次电池包括负极1，其中在集电体4的表面上设置有负极混合物层2和3，负极混合物层2和3含有含有硅和/或硅合金的活性材料颗粒和粘合剂。电极体形成 通过螺旋卷绕从内到外的层压体; 在负极1的外端部分中，负极合剂层2和3具有朝向负极混合物层2和3的端部2b和3b的厚度减小的锥形部分2a和3a; 并且在负极混合物层2和3的锥形部分2a和3a的尖端处形成主要包含粘结剂的渗出部分2d和3d。

    NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES AND LITHIUM SECONDARY BATTERY
    2.
    发明申请
    NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES AND LITHIUM SECONDARY BATTERY 审中-公开
    锂二次电池和锂二次电池负极

    公开(公告)号：US20110311871A1

    公开(公告)日：2011-12-22

    申请号：US13162144

    申请日：2011-06-16

    申请人： Atsushi Fukui ,  Taizou Sunano

    发明人： Atsushi Fukui ,  Taizou Sunano

    IPC分类号： H01M4/62

    CPC分类号： H01M4/622 ,  H01M4/134 ,  H01M4/386

    摘要： A negative electrode for lithium secondary batteries includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is formed on the negative electrode current collector. The negative electrode active material layer contains a binder and negative electrode active material particles containing at least one of silicon and a silicon alloy. The binder is a polyimide resin formed by imidization of a tetracarboxylic acid or tetracarboxylic anhydride and a diamine. The diamine contains a diamine having at least one hydroxyl group.

    摘要翻译： 锂二次电池用负极包括负极集电体和负极活性物质层。 负极活性物质层形成在负极集电体上。 负极活性物质层含有包含硅和硅合金中的至少一种的粘合剂和负极活性物质粒子。 粘合剂是通过酰胺化四羧酸或四羧酸酐和二胺形成的聚酰亚胺树脂。 二胺包含具有至少一个羟基的二胺。

    CYLINDRICAL LITHIUM SECONDARY BATTERY
    3.
    发明申请
    CYLINDRICAL LITHIUM SECONDARY BATTERY 审中-公开
    圆柱形锂二次电池

    公开(公告)号：US20080241647A1

    公开(公告)日：2008-10-02

    申请号：US12056661

    申请日：2008-03-27

    申请人： Atsushi FUKUI ,  Hidekazu YAMAMOTO ,  Yasuo TAKANO ,  Shouichirou SAWA ,  Taizou SUNANO ,  Maruo KAMINO

    发明人： Atsushi FUKUI ,  Hidekazu YAMAMOTO ,  Yasuo TAKANO ,  Shouichirou SAWA ,  Taizou SUNANO ,  Maruo KAMINO

    IPC分类号： H01M4/50 ,  H01M4/52 ,  H01M4/38 ,  H01M10/36 ,  H01M10/38

    CPC分类号： H01M10/052 ,  H01M2/1653 ,  H01M4/364 ,  H01M4/386 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/622 ,  H01M4/625 ,  H01M2004/021 ,  H01M2010/4292 ,  Y10T29/49115

    摘要： A cylindrical lithium secondary battery includes a positive electrode (1) having a positive electrode mixture layer disposed on a surface of a positive electrode current collector made of a conductive metal foil and containing a positive electrode active material, and a negative electrode (2) having a negative electrode mixture layer disposed on a surface of a negative electrode current collector made of a conductive metal foil and having a negative electrode active material containing silicon particles and/or silicon alloy particles. The amount of the positive electrode active material is 50 mg or less per 1 cm2 of the positive electrode, the average particle size of the silicon particles and/or silicon alloy particles is from 5 μm to 15 μm, and the theoretical electrical capacity ratio of the negative electrode to the positive electrode is 1.2 or greater.

    摘要翻译： 圆筒形锂二次电池包括正极（1），其具有设置在由导电金属箔制成并包含正极活性物质的正极集电体的表面上的正极合剂层，以及负极（2），其具有 设置在由导电金属箔制成的负极集电体的表面上并具有含有硅颗粒和/或硅合金颗粒的负极活性物质的负极合剂层。 正极活性物质的量相对于正极的每1cm 2为50mg以下，硅粒子和/或硅合金粒子的平均粒径为5μm〜15μm ，负极与正极的理论电容比为1.2以上。

    Lithium ion secondary battery
    4.
    发明授权
    Lithium ion secondary battery 有权
    锂离子二次电池

    公开(公告)号：US08277969B2

    公开(公告)日：2012-10-02

    申请号：US12890052

    申请日：2010-09-24

    申请人： Kei Kobayashi ,  Yasuo Takano ,  Taizou Sunano ,  Maruo Kamino

    发明人： Kei Kobayashi ,  Yasuo Takano ,  Taizou Sunano ,  Maruo Kamino

    IPC分类号： H01M2/16

    CPC分类号： H01M10/0587 ,  H01M2/022 ,  H01M2/0225 ,  H01M2/0285 ,  H01M4/134 ,  H01M4/661 ,  H01M10/052

    摘要： A lithium ion secondary battery 1 includes a spirally wound electrode assembly 20 and a cylindrical battery container 10. The spirally wound electrode assembly 20 includes a negative electrode 21, a positive electrode 22 and a separator 23. The negative electrode 21 includes negative-electrode active material layers 21b and 21c containing a negative-electrode active material capable of forming an alloy with lithium. The lithium ion secondary battery 1 includes an urging part 20a. The urging part 20a is disposed in the center of and in contact with the spirally wound electrode assembly 20. The urging part 20a is contractible in diameter. The urging part 20a is configured to urge the spirally wound electrode assembly 20 radially outward at least when contracting in diameter.

    摘要翻译： 锂离子二次电池1包括螺旋卷绕电极组件20和圆筒状电池容器10.螺旋卷绕电极组件20包括负极21，正极22和隔板23.负极21包括负极活性物质 材料层21b和21c包含能够与锂形成合金的负极活性材料。 锂离子二次电池1包括施力部20a。 推动部分20a设置在螺旋卷绕的电极组件20的中心并与之接触。推动部分20a的直径可收缩。 推动部分20a构造成至少在直径收缩时径向向外推动螺旋卷绕的电极组件20。

    LITHIUM SECONDARY BATTERY
    5.
    发明申请
    LITHIUM SECONDARY BATTERY 审中-公开
    锂二次电池

    公开(公告)号：US20120082892A1

    公开(公告)日：2012-04-05

    申请号：US13242514

    申请日：2011-09-23

    申请人： Kei Kobayashi ,  Atsushi Fukui ,  Taizou Sunano ,  Maruo Kamino

    发明人： Kei Kobayashi ,  Atsushi Fukui ,  Taizou Sunano ,  Maruo Kamino

    IPC分类号： H01M10/052

    CPC分类号： H01M4/661 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/662 ,  H01M4/667 ,  H01M10/052 ,  H01M2004/027

    摘要： A lithium secondary battery has a positive electrode, a separator, and a negative electrode having a negative electrode current collector and a negative electrode mixture layer formed on a surface of the negative electrode current collector. The negative electrode mixture layer contains a negative electrode active material including a metal element capable of alloying with lithium. The negative electrode current collector includes a substrate made of a Cu—Fe—P alloy foil, and a surface layer provided on both surfaces of the substrate and made of pure copper. The surface layer has a Vickers hardness of 120 and less than that of the substrate. The negative electrode current collector has a proof stress of 308 MPa.

    摘要翻译： 锂二次电池具有在负极集电体的表面上形成有负极集电体和负极混合层的正极，隔膜和负极。 负极合剂层含有负极活性物质，其包含能够与锂合金化的金属元素。 负极集电体包括由Cu-Fe-P合金箔制成的基板和设置在基板的两面上并由纯铜制成的表面层。 表面层的维氏硬度为120以下，小于基材的维氏硬度。 负极集电体的抗张强度为308MPa。

    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    6.
    发明申请
    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY 有权
    非水电解质二次电池

    公开(公告)号：US20110151338A1

    公开(公告)日：2011-06-23

    申请号：US13059770

    申请日：2009-08-04

    申请人： Hidekazu Yamamoto ,  Atsushi Fukui ,  Taizou Sunano ,  Maruo Kamino

    发明人： Hidekazu Yamamoto ,  Atsushi Fukui ,  Taizou Sunano ,  Maruo Kamino

    IPC分类号： H01M10/056

    CPC分类号： H01M10/052 ,  H01M4/134 ,  H01M4/38 ,  H01M4/386 ,  H01M4/622 ,  H01M6/164 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0034 ,  Y02E60/122

    摘要： The present invention is made to improve charge-discharge cycle performances under high temperature environment in a non-aqueous electrolyte secondary battery using a negative electrode containing a negative electrode active material of particulate silicon and/or silicon alloy and a binding agent.A non-aqueous electrolyte secondary battery according to the present invention includes a positive electrode 11, a negative electrode 12, a separator 13, and a non-aqueous electrolyte, wherein the negative electrode includes a negative electrode active material containing particulate silicon and/or silicon alloy and a binding agent, and the non-aqueous electrolyte contains fluorinated cyclic carbonate and a prescribed diisocyanate compound, and when Li storage volume per unit area of the negative electrode of the non-aqueous electrolyte secondary battery under charging condition is determined as A and the theoretical maximum Li storage volume per unit area of the negative electrode is determined as B, a utilizing rate (%) of negative electrode which is expressed by (A/B)×100 is 45% or less.

    摘要翻译： 本发明的目的在于提高使用含有硅和/或硅合金的负极活性物质的负极和粘合剂的非水电解质二次电池在高温环境下的充放电循环性能。 根据本发明的非水电解质二次电池包括正极11，负极12，隔膜13和非水电解质，其中所述负极包括含有颗粒状硅的负极活性物质和/或 硅合金和粘合剂，非水电解质含有氟化环状碳酸酯和规定的二异氰酸酯化合物，并且当非水电解质二次电池的负极在充电条件下的每单位面积的Li储存容积确定为A 将负极单位面积的理论最大Li储存容量确定为B，由（A / B）×100表示​​的负极的利用率（％）为45％以下。

    LITHIUM ION SECONDARY BATTERY
    7.
    发明申请
    LITHIUM ION SECONDARY BATTERY 有权
    锂离子二次电池

    公开(公告)号：US20110076534A1

    公开(公告)日：2011-03-31

    申请号：US12890052

    申请日：2010-09-24

    申请人： Kei Kobayashi ,  Yasuo Takano ,  Taizou Sunano ,  Maruo Kamino

    发明人： Kei Kobayashi ,  Yasuo Takano ,  Taizou Sunano ,  Maruo Kamino

    IPC分类号： H01M10/0587

    CPC分类号： H01M10/0587 ,  H01M2/022 ,  H01M2/0225 ,  H01M2/0285 ,  H01M4/134 ,  H01M4/661 ,  H01M10/052

    摘要： A lithium ion secondary battery 1 includes a spirally wound electrode assembly 20 and a cylindrical battery container 10. The spirally wound electrode assembly 20 includes a negative electrode 21, a positive electrode 22 and a separator 23. The negative electrode 21 includes negative-electrode active material layers 21b and 21c containing a negative-electrode active material capable of forming an alloy with lithium. The lithium ion secondary battery 1 includes an urging part 20a. The urging part 20a is disposed in the center of and in contact with the spirally wound electrode assembly 20. The urging part 20a is contractible in diameter. The urging part 20a is configured to urge the spirally wound electrode assembly 20 radially outward at least when contracting in diameter.

    摘要翻译： 锂离子二次电池1包括螺旋卷绕电极组件20和圆筒状电池容器10.螺旋卷绕电极组件20包括负极21，正极22和隔板23.负极21包括负极活性物质 材料层21b和21c包含能够与锂形成合金的负极活性材料。 锂离子二次电池1包括施力部20a。 推动部分20a设置在螺旋卷绕的电极组件20的中心并与之接触。推动部分20a的直径可收缩。 推动部分20a构造成至少在直径收缩时径向向外推动螺旋卷绕的电极组件20。

    Lithium secondary battery
    10.
    发明申请
    Lithium secondary battery 失效
    锂二次电池

    公开(公告)号：US20060141359A1

    公开(公告)日：2006-06-29

    申请号：US11316983

    申请日：2005-12-27

    申请人： Toshio Yanagida ,  Hiroshi Minami ,  Taizou Sunano ,  Maruo Kamino

    发明人： Toshio Yanagida ,  Hiroshi Minami ,  Taizou Sunano ,  Maruo Kamino

    IPC分类号： H01M4/58 ,  H01M4/66

    CPC分类号： H01M10/052 ,  H01M4/134 ,  H01M4/382 ,  H01M4/386 ,  H01M10/0431 ,  H01M10/0567 ,  H01M10/4235 ,  H01M2004/021 ,  H01M2010/4292

    摘要： Charge-discharge cycle performance is improved in a lithium secondary battery that adopts a thin film made of silicon or a silicon alloy as its negative electrode active material and has a wound electrode structure. The lithium secondary battery includes: a negative electrode having a current collector and a thin film made of silicon or a silicon alloy as a negative electrode active material, the thin film provided on the current collector; a positive electrode; a separator; the positive and negative electrodes being overlapped with the separator interposed therebetween, and the positive and negative electrodes and the separator being wound around to form an electrode assembly; a non-aqueous electrolyte; and a battery case accommodating the electrode assembly. The ratio of charge capacity per unit area of the negative electrode to theoretical capacity per unit area of the positive electrode is within the range of from 1.9 to 4.4.

    摘要翻译： 在采用由硅或硅合金制成的薄膜作为负极活性物质并具有卷绕电极结构的锂二次电池中，充放电循环性能得到改善。 锂二次电池包括：具有集电体的负极和由硅或硅合金制成的薄膜作为负极活性物质，所述薄膜设置在集电体上; 正极; 分隔符 正极和负极与插入其间的隔膜重叠，并且正极和负极和隔板缠绕在一起形成电极组件; 非水电解质; 以及容纳电极组件的电池壳体。 负极单位面积的电荷容量与正极单位面积的理论容量的比例在1.9〜4.4的范围内。