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公开(公告)号：US20050244711A1
公开(公告)日：2005-11-03
申请号：US10519073
申请日：2003-06-25
摘要： A negative electrode for a lithium secondary cell having a collector composed of an electroconductive metal foil and, provided on the surface thereof, an active material layer containing active material particles containing silicon and/or a silicon alloy and a binder, characterized in that the binder has mechanical characteristics of a tensile strength of 50 N/mm2 or more, an elongation at break of 10% or more, a strain energy density of 2.5×10−3 J/mm3 or more and a coefficient of elasticity of 10000 N/mm2 or less, and preferably characterized in that the collector has mechanical characteristics of a tensile strength of 80 N/mm2 or more, a proportional limit 30 N/mm2 or more, an elongation at break of 1.0% or more and an elastic elongation limit of 0.03% or more.
摘要翻译： 一种锂二次电池用负极，其具有由导电性金属箔构成的集电体，在其表面上设有包含含有硅和/或硅合金的活性物质粒子和粘合剂的活性物质层，其特征在于，所述粘合剂 具有拉伸强度为50N / mm 2以上的机械特性，断裂伸长率为10％以上，应变能密度为2.5×10 -3 J / mm 3以上，弹性系数为10000N / mm 2以下，其特征在于，集电体具有抗拉强度为80N的机械特性 / mm 2以上，比例范围为30N / mm 2以上，断裂伸长率为1.0％以上，弹性伸长极限为0.03％以上 。
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公开(公告)号：US20050123829A1
公开(公告)日：2005-06-09
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： H01M4/66 , H01M2/02 , H01M4/134 , H01M4/1395 , H01M4/38 , H01M4/62 , H01M4/70 , H01M10/04 , H01M10/05 , H01M10/052 , H01M10/0587 , H01M4/58
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，其中负极混合层的曲率半径与 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。
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公开(公告)号：US08216720B2
公开(公告)日：2012-07-10
申请号：US10519073
申请日：2003-06-25
摘要： A negative electrode for a lithium secondary cell having a collector composed of an electroconductive metal foil and, provided on the surface thereof, an active material layer containing active material particles containing silicon and/or a silicon alloy and a binder, characterized in that the binder has mechanical characteristics of a tensile strength of 50 N/mm2 or more, an elongation at break of 10% or more, a strain energy density of 2.5×10−3 J/mm3 or more and a coefficient of elasticity of 10000 N/mm2 or less, and preferably characterized in that the collector has mechanical characteristics of a tensile strength of 80 N/mm2 or more, a proportional limit 30 N/mm2 or more, an elongation at break of 1.0% or more and an elastic elongation limit of 0.03% or more.
摘要翻译： 一种锂二次电池用负极，其具有由导电性金属箔构成的集电体，在其表面上设有包含含有硅和/或硅合金的活性物质粒子和粘合剂的活性物质层，其特征在于，所述粘合剂 拉伸强度为50N / mm 2以上，断裂伸长率为10％以上，应变能密度为2.5×10 -3 J / mm 3以上，弹性系数为10000N / mm 2的机械特性 其特征在于，集电体的拉伸强度为80N / mm 2以上，比例范围为30N / mm 2以上，断裂伸长率为1.0％以上，弹性伸长极限为 0.03％以上。
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14.发明授权公开(公告)号：US06946223B2
公开(公告)日：2005-09-20
申请号：US10329571
申请日：2002-12-27
IPC分类号： H01M4/66 , H01M4/134 , H01M4/1395 , H01M4/38 , H01M4/40 , H01M4/62 , H01M4/64 , H01M10/05 , H01M4/58
CPC分类号： H01M4/13 , H01M4/386 , H01M4/405 , H01M4/625 , H01M4/64 , H01M4/661 , H01M10/052 , H01M2004/027
摘要： A negative electrode for lithium secondary battery includes a negative electrode collector having a proportional limit of not less than 2.0 N/mm and having a negative electrode material attached thereon, and the negative electrode material including a material to be alloyed with lithium.
摘要翻译： 锂二次电池用负极包括具有不小于2.0N / mm的比例极限并具有负极材料的负极集电体，负极材料包括与锂合金化的材料。
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公开(公告)号：US20070054190A1
公开(公告)日：2007-03-08
申请号：US11516523
申请日：2006-09-07
申请人： Atsushi Fukui , Hiroshi Minami , Yasuyuki Kusumoto
发明人： Atsushi Fukui , Hiroshi Minami , Yasuyuki Kusumoto
CPC分类号： H01M4/1395 , H01M4/02 , H01M4/0471 , H01M4/38 , H01M4/386 , H01M4/622 , H01M4/625 , H01M10/446 , H01M2004/021 , H01M2004/027 , H01M2010/4292
摘要： A lithium secondary battery has a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode has a negative electrode current collector and a negative electrode mixture layer containing a negative electrode conductive agent, a negative electrode binder, and negative electrode active material particles made of a material containing silicon. The negative electrode mixture layer is sintered and disposed on the negative electrode current collector. The negative electrode active material particles have an average particle size of from 5.0-15.0 μm before being charged. The negative electrode conductive agent is made of a graphite material having an average particle size of from 2.5-15.0 μm. The amount of the graphite material added is from 3-20 mass % with respect to the negative electrode active material. The theoretical electrical capacity ratio of the positive electrode to the negative electrode is 1.0 or less.
摘要翻译： 锂二次电池具有正极，负极和非水电解质。 负极具有含有负极导电剂，负极粘合剂和由含硅材料制成的负极活性物质粒子的负极集电体和负极合剂层。 将负极复合层烧结并设置在负极集电体上。 负极活性物质粒子在充电前的平均粒径为5.0〜15.0μm。 负极导电剂由平均粒径为2.5〜15.0μm的石墨材料制成。 石墨材料的添加量相对于负极活性物质为3-20质量％。 正极与负极的理论电容比为1.0以下。
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公开(公告)号：US09263771B2
公开(公告)日：2016-02-16
申请号：US12295182
申请日：2007-03-28
申请人： Atsushi Fukui , Hiroshi Minami , Yasuyuki Kusumoto
发明人： Atsushi Fukui , Hiroshi Minami , Yasuyuki Kusumoto
CPC分类号： H01M10/0587 , H01M4/134 , H01M2004/021 , Y02E60/122 , Y02P70/54 , Y10T29/49115
摘要： [Problem] An object of the invention is to provide a lithium secondary battery that shows good cycle performance and at the same time prevents a battery thickness increase due to charge-discharge cycles, and a method of manufacturing such a battery.[Means for Solving the Problem] A lithium secondary battery includes a negative electrode (2) having a negative electrode current collector (11) and a negative electrode active material layer (12) disposed on the negative electrode current collector (11), a positive electrode (1) having a positive electrode active material, a separator (3), and a non-aqueous electrolyte. The negative electrode active material layer includes negative electrode active material particles and a negative electrode binder, and the negative electrode active material particles include silicon particles and/or silicon alloy particles. The silicon particles and the silicon alloy particles have a crystallite size of 100 nm or less.
摘要翻译： 发明内容本发明的目的是提供一种显示良好的循环性能并同时防止由于充放电循环引起的电池厚度增加的锂二次电池及其制造方法。 解决问题的手段锂二次电池包括具有负极集电体（11）的负极（2）和设置在负极集电体（11）上的负极活性物质层（12），正极 具有正极活性物质的电极（1），隔膜（3）和非水电解质。 负极活性物质层包括负极活性物质粒子和负极粘合剂，负极活性物质粒子包含硅粒子和/或硅合金粒子。 硅颗粒和硅合金颗粒的微晶尺寸为100nm以下。
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公开(公告)号：US20090305129A1
公开(公告)日：2009-12-10
申请号：US12295182
申请日：2007-03-28
申请人： Atsushi Fukui , Hiroshi Minami , Yasuyuki Kusumoto
发明人： Atsushi Fukui , Hiroshi Minami , Yasuyuki Kusumoto
CPC分类号： H01M10/0587 , H01M4/134 , H01M2004/021 , Y02E60/122 , Y02P70/54 , Y10T29/49115
摘要： [Problem] An object of the invention is to provide a lithium secondary battery that shows good cycle performance and at the same time prevents a battery thickness increase due to charge-discharge cycles, and a method of manufacturing such a battery.[Means for Solving the Problem] A lithium secondary battery includes a negative electrode (2) having a negative electrode current collector (11) and a negative electrode active material layer (12) disposed on the negative electrode current collector (11), a positive electrode (1) having a positive electrode active material, a separator (3), and a non-aqueous electrolyte. The negative electrode active material layer includes negative electrode active material particles and a negative electrode binder, and the negative electrode active material particles include silicon particles and/or silicon alloy particles. The silicon particles and the silicon alloy particles have a crystallite size of 100 nm or less.
摘要翻译： 发明内容本发明的目的是提供一种显示良好的循环性能并同时防止由于充放电循环引起的电池厚度增加的锂二次电池及其制造方法。 解决问题的手段锂二次电池包括具有负极集电体（11）的负极（2）和设置在负极集电体（11）上的负极活性物质层（12），正极 具有正极活性物质的电极（1），隔膜（3）和非水电解质。 负极活性物质层包括负极活性物质粒子和负极粘合剂，负极活性物质粒子包含硅粒子和/或硅合金粒子。 硅颗粒和硅合金颗粒的微晶尺寸为100nm以下。
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公开(公告)号：US20080124631A1
公开(公告)日：2008-05-29
申请号：US11771552
申请日：2007-06-29
CPC分类号： H01M4/134 , H01M4/0404 , H01M4/38 , H01M4/505 , H01M4/525 , H01M4/587 , H01M4/622 , H01M4/625 , H01M4/64 , H01M4/661 , H01M2004/027
摘要： A lithium secondary battery includes an electrode assembly having a positive electrode (1), a negative electrode (2) having a negative electrode current collector and a negative electrode active material layer formed on a surface of the negative electrode current collector and composed of a binder and negative electrode active material particles containing silicon and/or a silicon alloy, and a separator (3) interposed between the electrodes. The electrode assembly is impregnated with a non-aqueous electrolyte. The binder contains a polyimide resin represented by the following chemical formula (1): where R contains at least a benzene ring, and n is within the range of from 10 to 100,000, and the negative electrode active material particles have an average particle size of 5 μm or greater.
摘要翻译： 锂二次电池包括具有正极（1）的电极组件，负极集电体的负极（2）和形成在负极集电体的表面上并由粘合剂构成的负极活性物质层 和含有硅和/或硅合金的负极活性物质粒子，以及夹在电极之间的隔膜（3）。 电极组件浸渍有非水电解质。 粘合剂含有下述化学式（1）表示的聚酰亚胺树脂：其中，R至少含有苯环，n在10〜100,000的范围内，负极活性物质粒子的平均粒径为 5岁以上。
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19.发明授权公开(公告)号：US07297446B2
公开(公告)日：2007-11-20
申请号：US10809848
申请日：2004-03-26
申请人： Atsushi Fukui , Mariko Torimae , Yasuyuki Kusumoto , Hisaki Tarui
发明人： Atsushi Fukui , Mariko Torimae , Yasuyuki Kusumoto , Hisaki Tarui
CPC分类号： H01M4/622 , H01M4/02 , H01M4/0471 , H01M4/386 , H01M4/661 , H01M4/70 , H01M10/052
摘要： A negative electrode for a rechargeable lithium battery which is obtained by sintering under a non-oxidizing atmosphere, in the form of a layer on a surface of a metal foil current collector, an anode mix containing a binder and particles of active material containing silicon and/or a silicon alloy; the negative electrode being characterized in that the metal foil current corrector has projections and recesses on its surface, the projection is shaped to have a recurved side face portion that curves more outwardly as it extends closer to a distal end of the projection, and the binder penetrates into spaces defined by the recurved side face portions.
摘要翻译： 一种用于可再充电锂电池的负极，其通过在金属箔集电器的表面上的非氧化性气氛下以层的形式烧结获得，含有粘合剂的阳极混合物和含有硅的活性材料颗粒， /或硅合金; 所述负极的特征在于，所述金属箔电流校正器在其表面上具有突起和凹部，所述突起被成形为具有弯曲的侧面部分，其在靠近所述突起的远端延伸时更向外弯曲，并且所述粘合剂 穿透由弯曲的侧面部分限定的空间。
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20.发明申请公开(公告)号：US20070172733A1
公开(公告)日：2007-07-26
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
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。
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