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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。

    Lithium secondary battery and method for manufacturing the same
    3.
    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：US09070940B2

    公开(公告)日：2015-06-30

    申请号：US14004245

    申请日：2012-03-16

    申请人： Shouichiro Sawa ,  Atsushi Fukui ,  Taizou Sunano

    发明人： Shouichiro Sawa ,  Atsushi Fukui ,  Taizou Sunano

    IPC分类号： H01M4/36 ,  H01M4/131 ,  H01M4/134 ,  H01M4/38 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

    CPC分类号： H01M4/364 ,  H01M4/131 ,  H01M4/134 ,  H01M4/386 ,  H01M4/525 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/021 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

    摘要： A lithium secondary battery with superior cycle performance is provided. The lithium secondary battery includes a negative electrode including a negative electrode active material layer disposed on a negative electrode current collector and containing negative electrode active material particles, negative electrode conductor particles, and a negative electrode binder; a positive electrode containing a positive electrode active material; and a non-aqueous electrolyte. The concentration of the negative electrode conductor particles in a surface layer of the negative electrode active material layer facing away from the negative electrode current collector is higher than the concentration of the negative electrode conductor particles in a center of the negative electrode active material layer.

    摘要翻译： 提供了具有优异循环性能的锂二次电池。 锂二次电池包括负极，其包括设置在负极集电体上并具有负极活性物质粒子，负极导体粒子和负极粘合剂的负极活性物质层， 含有正极活性物质的正极; 和非水电解质。 负极活性物质层的背离负极集电体的表面层中的负极导体粒子的浓度高于负极活性物质层的中心的负极导体粒子的浓度。

    LITHIUM SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME
    4.
    发明申请
    LITHIUM SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME 审中-公开
    锂二次电池及其制造方法

    公开(公告)号：US20110117431A1

    公开(公告)日：2011-05-19

    申请号：US12868305

    申请日：2010-08-25

    申请人： Atsushi Fukui ,  Taizou Sunano ,  Maruo Kamino

    发明人： Atsushi Fukui ,  Taizou Sunano ,  Maruo Kamino

    IPC分类号： H01M4/62 ,  H01M10/00

    CPC分类号： H01M10/052 ,  C08G73/10 ,  C08G73/1085 ,  H01M4/134 ,  H01M4/386 ,  H01M4/525 ,  H01M4/621 ,  H01M4/622 ,  Y02T10/7011 ,  Y10T29/49115

    摘要： A lithium secondary battery including an electrode assembly and a non-aqueous electrolyte impregnated in the electrode assembly, the electrode assembly containing a positive electrode, a negative electrode having a negative electrode current collector and a negative electrode mixture layer formed on the negative electrode current collector, the negative electrode mixture layer containing a binder and negative electrode active material particles, the negative electrode active material particles containing at least one of silicon and a silicon alloy, and a separator interposed between the negative electrode and the positive electrode. The binder contains a polyimide resin having a branch structure formed by imidizing a polyvalent amine having a valency of 3 or more and a tetracarboxylic dianhydride.

    摘要翻译： 一种锂二次电池，包括电极组件和浸渍在电极组件中的非水电解质，包含正极的电极组件，具有负极集电体的负极和形成在负极集电体上的负极混合层 含有粘合剂和负极活性物质粒子的负极混合物层，含有硅和硅合金中的至少一种的负极活性物质粒子以及介于负极和正极之间的隔膜。 粘合剂含有通过酰亚胺化三价以上的多价胺和四羧酸二酐形成的分支结构的聚酰亚胺树脂。

    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    5.
    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：US20100081063A1

    公开(公告)日：2010-04-01

    申请号：US12568332

    申请日：2009-09-28

    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： H01M6/16

    CPC分类号： H01M10/0568 ,  H01M4/0435 ,  H01M4/134 ,  H01M4/621 ,  H01M4/70 ,  H01M10/052 ,  H01M10/0569

    摘要： A non-aqueous electrolyte secondary battery has a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte dissolving a solute in a non-aqueous solvent wherein the negative electrode contains a negative electrode active material containing powdered silicon and/or silicon alloy and a binding agent, and the non-aqueous electrolyte contains a fluorinated cyclic carbonate represented by a general formula (1) below, and wherein when Li storage volume per unit area in the negative electrode during charging is determined as A and the theoretical maximum Li storage volume per unit area in the negative electrode is determined as B, a utilizing rate (%) of negative electrode as expressed by (A/B)×100 is 45% or less.

    摘要翻译： 非水电解质二次电池具有正极，负极，插入在正极和负极之间的隔膜以及将溶质溶解在非水溶剂中的非水电解质，其中负极含有负极 含有硅和/或硅合金粉末和粘合剂的电极活性材料，非水电解质含有下述通式（1）表示的氟化环状碳酸酯，其中当负极中的每单位面积的Li储存容积 在充电期间确定为A，将负极中每单位面积的理论最大Li储存容积确定为B，由（A / B）×100表示​​的负极的利用率（％）为45％以下。

    LITHIUM SECONDARY BATTERY
    6.
    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
    7.
    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。

    Non-aqueous electrolyte secondary battery
    10.
    发明授权
    Non-aqueous electrolyte secondary battery 有权
    非水电解质二次电池

    公开(公告)号：US08802299B2

    公开(公告)日：2014-08-12

    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： H01M6/16 ,  H01M4/13 ,  H01M4/62 ,  H01M10/052 ,  H01M4/134 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/38

    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。