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    • 4. 发明申请
    • ELECTRODE FOR LITHIUM ION SECONDARY BATTERY
    • 用于锂离子二次电池的电极
    • US20090104529A1
    • 2009-04-23
    • US11916603
    • 2006-07-21
    • Hajime NishinoShuji TsutsumiShinji KasamatsuHideharu TakezawaMikinari Shimada
    • Hajime NishinoShuji TsutsumiShinji KasamatsuHideharu TakezawaMikinari Shimada
    • H01M4/58
    • H01M4/70H01M10/0525Y02E60/122Y02T10/7011
    • An object of the present invention is to provide an electrode for a lithium ion secondary battery that can ensure a high level of safety even when exposed to severe conditions such as a nail penetration test or crush test, and exhibit excellent output characteristics.The present invention relates to an electrode for a lithium ion secondary battery having a material mixture containing active material particles capable of reversibly absorbing and desorbing lithium, and a current collector that carries the material mixture, wherein a surface of the current collector has recessed portions, and an area occupied by the recessed portions accounts for not less than 30% of an a material mixture carrying area of the current collector. The present invention further relates to an electrode for a lithium ion secondary battery wherein, in a cut surface obtained by simultaneously cutting a material mixture and a current collector vertically to an electrode plane, the maximum depth of recessed portions is not less than 1 μm, or a difference between an average thickness of a current collector and a maximum thickness of the current collector is not less than 0.35 μm.
    • 本发明的目的是提供一种锂离子二次电池用电极,即使在暴露于诸如指甲穿透试验或粉碎试验等严酷条件下也能够确保高水平的安全性,并且显示出优异的输出特性。 本发明涉及一种锂离子二次电池用电极,其具有包含能够可逆地吸收和解吸锂的活性物质粒子的材料混合物,以及承载该材料混合物的集电体,其中集电体的表面具有凹部, 并且由凹部占据的面积占集电体的混合物承载面积的30%以上。 本发明还涉及一种锂离子二次电池用电极,其特征在于,在与电极平面垂直地同时切割材料混合物和集电体的切断面中,凹部的最大深度为1μm以上, 或者集电体的平均厚度与集电体的最大厚度的差为0.35μm以上。
    • 5. 发明授权
    • Electrode for lithium ion secondary battery
    • 锂离子二次电池用电极
    • US08883348B2
    • 2014-11-11
    • US11916603
    • 2006-07-21
    • Hajime NishinoShuji TsutsumiShinji KasamatsuHideharu TakezawaMikinari Shimada
    • Hajime NishinoShuji TsutsumiShinji KasamatsuHideharu TakezawaMikinari Shimada
    • H01M4/00H01M4/13H01M4/58H01M10/0525H01M4/70
    • H01M4/70H01M10/0525Y02E60/122Y02T10/7011
    • An object of the present invention is to provide an electrode for a lithium ion secondary battery that can ensure a high level of safety even when exposed to severe conditions such as a nail penetration test or crush test, and exhibit excellent output characteristics.The present invention relates to an electrode for a lithium ion secondary battery having a material mixture containing active material particles capable of reversibly absorbing and desorbing lithium, and a current collector that carries the material mixture, wherein a surface of the current collector has recessed portions, and an area occupied by the recessed portions accounts for not less than 30% of an a material mixture carrying area of the current collector. The present invention further relates to an electrode for a lithium ion secondary battery wherein, in a cut surface obtained by simultaneously cutting a material mixture and a current collector vertically to an electrode plane, the maximum depth of recessed portions is not less than 1 μm, or a difference between an average thickness of a current collector and a maximum thickness of the current collector is not less than 0.35 μm.
    • 本发明的目的是提供一种锂离子二次电池用电极,即使在暴露于诸如指甲穿透试验或粉碎试验等严酷条件下也能够确保高水平的安全性,并且显示出优异的输出特性。 本发明涉及一种锂离子二次电池用电极,其具有包含能够可逆地吸收和解吸锂的活性物质粒子的材料混合物,以及承载该材料混合物的集电体,其中集电体的表面具有凹部, 并且由凹部占据的面积占集电体的混合物承载面积的30%以上。 本发明还涉及一种锂离子二次电池用电极,其特征在于,在与电极平面垂直地同时切割材料混合物和集电体的切断面中,凹部的最大深度为1μm以上, 或者集电体的平均厚度与集电体的最大厚度的差为0.35μm以上。
    • 7. 发明授权
    • Electrode group for battery and non-aqueous electrolyte secondary battery using the same
    • 电极组电池和非水电解质二次电池使用相同
    • US07425386B2
    • 2008-09-16
    • US10664879
    • 2003-09-22
    • Hideharu TakezawaShuji TsutsumiMikinari Shimada
    • Hideharu TakezawaShuji TsutsumiMikinari Shimada
    • H01M2/18H01M6/10H01M2/26
    • H01M10/0431H01M2/0267H01M2/0275
    • An electrode group for a battery including a positive electrode and a negative electrode wound into a spiral with a separator interposed therebetween, wherein the positive electrode includes a positive electrode current collector and positive electrode material mixture layers formed on both sides of the positive electrode current collector, the negative electrode includes a negative electrode current collector and negative electrode material mixture layers formed on both sides of the negative electrode current collector, a lead is connected to at least one of the positive electrode current collector and the negative electrode current collector, and at least one of step portions having difference in level formed in the electrode group by lengthwise ends of the positive electrode, the negative electrode and the separator and the periphery of the lead, respectively, is covered with an insulating member arranged on an inner circumference side or an outer circumference side of a turn of the electrode group.
    • 一种电池用电极组,包括正极和负极,其间插入有隔板,所述正极包括正极集电体和形成在所述正极集电体的两侧的正极合剂层 负极包括在负极集电体的两侧形成的负极集电体和负极复合层,引线与正极集电体和负极集电体中的至少一个连接,在 分别由正极,负极和隔板的长度方向端部以及引线的外周分别在电极组中形成的电平差异的台阶部分中的至少一个被布置在内周侧的绝缘构件 的一个外圈的一个转弯 电极组。