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。

公开(公告)号：US08734991B2

公开(公告)日：2014-05-27

申请号：US12742397

申请日：2008-11-07

申请人： Yasuo Takano ,  Atsushi Fukui ,  Taizo Sunano ,  Maruo Kamino ,  Tetsuo Nakanishi ,  Koichiro Watanabe

发明人： Yasuo Takano ,  Atsushi Fukui ,  Taizo Sunano ,  Maruo Kamino ,  Tetsuo Nakanishi ,  Koichiro Watanabe

IPC分类号： H01M4/13 ,  C01B33/02 ,  H01M4/88

CPC分类号： H01M4/134 ,  B82Y30/00 ,  C01B33/027 ,  C01B33/029 ,  C01B33/03 ,  H01M4/1395 ,  H01M4/62 ,  H01M4/621 ,  H01M4/622 ,  H01M4/624 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/021

摘要： This invention provides a negative electrode material for a rechargeable battery with a nonaqueous electrolyte, characterized in that the negative electrode material contains polycrystalline silicon particles as an active material, the particle diameter of crystallites of the polycrystalline silicon is not less than 20 nm and not more than 100 nm in terms of a crystallite size determined by the Scherrer method from the full width at half maximum of a diffraction line attributable to Si (111) around 2θ=28.4° in an x-ray diffraction pattern analysis, and the true specific gravity of the silicon particles is 2.300 to 2.320.

摘要翻译： 本发明提供一种用于具有非水电解质的可再充电电池的负极材料，其特征在于，所述负极材料含有多晶硅颗粒作为活性材料，所述多晶硅的微晶粒径不小于20nm，而不是更多 以Scherrer法测定的微晶尺寸为100nm以上，衍射线的衍射线的全半宽度可归因于Si（111）在2θ附近; = x = 28.4°，X射线衍射图谱分析， 硅颗粒的重力为2.300〜2.320。

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。

公开(公告)号：US08283075B2

公开(公告)日：2012-10-09

申请号：US12379700

申请日：2009-02-26

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

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

IPC分类号： H01M6/16 ,  H01M4/58

CPC分类号： H01M10/0566 ,  H01M4/131 ,  H01M4/364 ,  H01M10/052

摘要： A non-aqueous electrolyte secondary battery has a positive electrode (1), a negative electrode (2), a separator (3) interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte solution in which a solute is dissolved in a non-aqueous solvent. The negative electrode contains a negative electrode active material capable of alloying with lithium and the non-aqueous solvent of the non-aqueous electrolyte solution contains one ore more fluorinated cyclic carbonates and a carboxylic ester. In addition, the non-aqueous electrolyte solution contains a nitrile compound having a chain saturated hydrocarbon group having two or more carbon atoms.

摘要翻译： 非水电解质二次电池在正极和负极之间具有正极（1），负极（2），隔膜（3）以及溶质溶解的非水电解液 在非水溶剂中。 负极含有能够与锂合金化的负极活性物质，非水电解质溶液的非水溶剂含有一个以上的氟化环状碳酸酯和羧酸酯。 另外，非水电解液含有具有碳原子数为2以上的链饱和烃基的腈化合物。

公开(公告)号：US20110217577A1

公开(公告)日：2011-09-08

申请号：US13040707

申请日：2011-03-04

申请人： Atsushi Fukui ,  Taizou Sunano ,  Maruo Kamino

发明人： Atsushi Fukui ,  Taizou Sunano ,  Maruo Kamino

IPC分类号： H01M4/02 ,  H01M4/38 ,  H01M2/02

CPC分类号： H01M10/052 ,  H01M10/0431

摘要： A lithium secondary battery comprises an electrode assembly and a non-aqueous electrolyte. The electrode assembly is made by winding a negative electrode, a positive electrode, and a separator interposed between the negative and positive electrodes. The negative electrode contains a negative electrode active material that is alloyed with lithium. The non-aqueous electrolyte is impregnated in the electrode assembly. At least one of the negative and positive electrodes is divided into a plurality of electrode units which are arranged at spaces for each other along the winding direction.

摘要翻译： 锂二次电池包括电极组件和非水电解质。 电极组件通过卷绕负极和正极之间的负极和隔膜来制造。 负极含有与锂合金化的负极活性物质。 非水电解质浸渍在电极组件中。 负电极和正极中的至少一个被分成沿着卷绕方向彼此间隔设置的多个电极单元。

公开(公告)号：US20090214938A1

公开(公告)日：2009-08-27

申请号：US12379700

申请日：2009-02-26

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

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

IPC分类号： H01M4/60 ,  H01M6/10

CPC分类号： H01M10/0566 ,  H01M4/131 ,  H01M4/364 ,  H01M10/052

摘要： A non-aqueous electrolyte secondary battery has a positive electrode (1), a negative electrode (2), a separator (3) interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte solution in which a solute is dissolved in a non-aqueous solvent. The negative electrode contains a negative electrode active material capable of alloying with lithium and the non-aqueous solvent of the non-aqueous electrolyte solution contains one ore more fluorinated cyclic carbonates and a carboxylic ester. In addition, the non-aqueous electrolyte solution contains a nitrile compound having a chain saturated hydrocarbon group having two or more carbon atoms.

摘要翻译： 非水电解质二次电池在正极和负极之间具有正极（1），负极（2），隔膜（3）以及溶质溶解的非水电解液 在非水溶剂中。 负极含有能够与锂合金化的负极活性物质，非水电解质溶液的非水溶剂含有一个以上的氟化环状碳酸酯和羧酸酯。 另外，非水电解液含有具有碳原子数为2以上的链饱和烃基的腈化合物。

公开(公告)号：US07556881B2

公开(公告)日：2009-07-07

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： H01M6/10 ,  H01M4/00

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 theoretical capacity per unit area of the negative electrode to charge 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其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。 负极单位面积的理论容量与正极单位面积的充电容量之比在1.9〜4.4的范围内。

公开(公告)号：US20090081556A1

公开(公告)日：2009-03-26

申请号：US12236715

申请日：2008-09-24

申请人： Hidekazu Yamamoto ,  Taizou Sunano ,  Maruo Kamino

发明人： Hidekazu Yamamoto ,  Taizou Sunano ,  Maruo Kamino

IPC分类号： H01M10/26

CPC分类号： H01M10/0569 ,  H01M4/38 ,  H01M4/386 ,  H01M4/387 ,  H01M4/405 ,  H01M6/164 ,  H01M10/052 ,  H01M10/0587 ,  H01M2300/0034 ,  H01M2300/0037

摘要： A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode and a non-aqueous electrolyte. The negative electrode comprises a negative electrode active material to be alloyed with lithium and the non-aqueous electrolyte comprises a non-aqueous solvent containing fluorinated cyclic carbonate and propyl acetate.

摘要翻译： 非水电解质二次电池包括正极，负极，介于正极和负极之间的隔膜和非水电解质。 负极包括与锂合金化的负极活性物质，非水电解质包含含氟化环状碳酸酯和乙酸丙酯的非水溶剂。

公开(公告)号：US20080241703A1

公开(公告)日：2008-10-02

申请号：US12078052

申请日：2008-03-26

申请人： Hidekazu Yamamoto ,  Yasuo Takano ,  Takanobu Chiga ,  Atsushi Fukui ,  Taizou Sunano ,  Maruo Kamino

发明人： Hidekazu Yamamoto ,  Yasuo Takano ,  Takanobu Chiga ,  Atsushi Fukui ,  Taizou Sunano ,  Maruo Kamino

IPC分类号： H01M10/26 ,  H01M4/58

CPC分类号： H01M10/0525 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/134 ,  H01M4/621 ,  H01M4/661 ,  H01M4/70 ,  H01M10/0569 ,  H01M10/0587 ,  H01M2004/021 ,  H01M2300/0025

摘要： A nonaqueous electrolyte secondary battery which includes a positive electrode, a negative electrode and a separator stacked and wound in a cylindrical configuration, and which achieves a high energy density and superior cycle performance characteristics.The nonaqueous electrolyte secondary battery includes a positive electrode containing a positive active material, a negative electrode containing a negative active material, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte containing a solvent and a solute. Those positive electrode, negative electrode and separator are stacked and wound in a cylindrical configuration. Characteristically, the negative active material comprises a material that stores lithium via alloying with lithium, the solvent in the nonaqueous electrolyte contains a fluorinated cyclic carbonate, and the nonaqueous electrolyte has a viscosity of not higher than 2.5 mPas.

摘要翻译： 一种非水电解质二次电池，其包括正极，负极和层叠并以圆筒形构成的隔板，并且具有高能量密度和优异的循环性能特性。 非水电解质二次电池包括含有正极活性物质的正极，含有负极活性物质的负极，插入正极和负极之间的隔膜，以及含有溶剂和溶质的非水电解质。 这些正极，负极和隔板被堆叠并缠绕成圆柱形构造。 特别地，负极活性物质包括通过与锂合金化锂的材料，非水电解质中的溶剂含有氟化环状碳酸酯，非水电解质的粘度不高于2.5mPa·s。

公开(公告)号：US20080241646A1

公开(公告)日：2008-10-02

申请号：US12056559

申请日：2008-03-27

申请人： Shouichiro Sawa ,  Taizou Sunano ,  Maruo Kamino

发明人： Shouichiro Sawa ,  Taizou Sunano ,  Maruo Kamino

IPC分类号： H01M10/36

CPC分类号： H01M10/0587 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0431 ,  H01M10/052 ,  H01M10/0525 ,  Y02T10/7011

摘要： A lithium secondary battery has a wound electrode assembly (5). The wound electrode assembly (5) has a negative electrode (2) having a negative electrode active material layer containing a negative electrode active material capable of alloying with lithium and having a filling density of 2.0 g/cc or less, a positive electrode (1) having a positive electrode active material layer containing a positive electrode active material made of a transition metal composite oxide, a separator (3) disposed between the positive and negative electrodes and having a penetration resistance of 500 g or greater, and a cylindrical hollow space (14) at a winding axis and in the vicinity thereof, wherein the positive electrode (1), the negative electrode (2), and the separator (3) are spirally wound. A columnar center pin (15) having a diameter of from 75% to 95% of the diameter of the hollow space is disposed in the hollow space.

摘要翻译： 锂二次电池具有卷绕电极组件（5）。 卷绕电极组件（5）具有负极（2），其具有负极活性物质层，负极活性物质层含有与锂合金化的负极活性物质，填充密度为2.0g / cc以下，正极（1 ），其具有含有由过渡金属复合氧化物构成的正极活性物质的正极活性物质层，设置在正极和负极之间并具有500g以上的耐渗透性的隔膜（3）和圆筒状中空空间 （14）在卷绕轴及其附近，其中正极（1），负极（2）和隔板（3）螺旋卷绕。 具有中空空间直径的75％至95％直径的柱状中心销（15）设置在中空空间中。