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公开(公告)号：US09048502B2
公开(公告)日：2015-06-02
申请号：US13993892
申请日：2011-12-07
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。
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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
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。
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公开(公告)号：US20140004415A1
公开(公告)日：2014-01-02
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
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 hinder; 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，负极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阻碍物的负极活性物质层， 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。
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公开(公告)号：US20130266834A1
公开(公告)日：2013-10-10
申请号：US13993892
申请日：2011-12-07
IPC分类号： H01M10/04
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。
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公开(公告)号：US08101295B2
公开(公告)日：2012-01-24
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
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。
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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。
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公开(公告)号：US20080286654A1
公开(公告)日：2008-11-20
申请号：US12119928
申请日：2008-05-13
CPC分类号： H01M4/38 , H01M4/364 , H01M4/387 , H01M4/583 , H01M4/62 , H01M4/622 , H01M10/052 , H01M2004/021 , H01M2004/027
摘要： A non-aqueous electrolyte secondary battery is composed of a positive electrode, a negative electrode, and a non-aqueous electrolyte, and the negative electrode has a negative electrode composite layer containing a negative electrode active material and a binder formed on a negative electrode current collector. The negative electrode active material contains a complex alloy powder containing tin, cobalt and carbon and graphite powder, and the negative electrode composite layer formed on the negative electrode current collector has percentage of porosity within the range of 5 to 20 volume %.
摘要翻译： 非水电解质二次电池由正极，负极和非水电解质构成，负极具有含有负极活性物质和负极电流形成的粘合剂的负极复合层 集电极。 负极活性物质含有含有锡，钴，碳和石墨粉末的复合合金粉末，负极集电体上形成的负极复合层的孔隙率为5〜20体积％。
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