公开(公告)号：US08349518B2

公开(公告)日：2013-01-08

申请号：US13029656

申请日：2011-02-17

申请人： Dae-Young Kim ,  Byoung-Kwang Lee ,  Seung-Jun Choi

发明人： Dae-Young Kim ,  Byoung-Kwang Lee ,  Seung-Jun Choi

IPC分类号： H01M4/64

CPC分类号： H01M4/661 ,  B32B15/01 ,  B32B2307/538 ,  B32B2307/54 ,  B32B2457/10 ,  C22C9/00 ,  C25D3/38 ,  C25D7/0614 ,  H01M4/667 ,  H01M10/052 ,  H01M10/0525 ,  Y10T428/12229 ,  Y10T428/12431 ,  Y10T428/12472 ,  Y10T428/12993

摘要： A copper foil for a current collector of a lithium secondary battery has a crystalline structure, in which a ratio of the sum of texture coefficients of a (111) surface and a (200) surface to the total sum of texture coefficients of the (111), (200) and (220) surfaces is 60 to 85%, a ratio of the texture coefficient of the (111) surface to the total sum of texture coefficients of the (111), (200) and (220) is 18 to 38%, a ratio of the texture coefficient of the (200) surface thereto is 28 to 62%, and a ratio of the texture coefficient of the (220) surface thereto is 15 to 40%. The copper foil has surface roughness (Rz-JIS) of 2 μm or less, weight deviation of 3% or less, tensile strength of 30 to 40 kgf/mm2, elongation of 3 to 20%, and thickness of 1 to 35 μm.

摘要翻译： 用于锂二次电池的集电体的铜箔具有晶体结构，其中（111）表面和（200）表面的织构系数之和与（111）的织构系数的总和的比率 （111），（200）和（220）的织构系数的总和的比例为（18），（200）和（220） （200）表面的织构系数的比例为28〜62％，（220）表面的织构系数的比例为15〜40％。 铜箔的表面粗糙度（Rz-JIS）为2μm以下，重量偏差为3％以下，拉伸强度为30〜40kgf / mm 2，伸长率为3〜20％，厚度为1〜35μm。

公开(公告)号：US20120040241A1

公开(公告)日：2012-02-16

申请号：US12962180

申请日：2010-12-07

申请人： Dae-Young Kim ,  Byoung-Kwang Lee ,  Seung-Jun Choi

发明人： Dae-Young Kim ,  Byoung-Kwang Lee ,  Seung-Jun Choi

IPC分类号： H01M4/66

CPC分类号： H01M4/661 ,  C23F15/00 ,  C25D1/04 ,  C25D3/38 ,  H01M4/75 ,  H01M10/0525

摘要： A copper foil for a current collector of a lithium secondary battery is configured such that a nodule cluster having an inter-nodule aspect ratio of 0.001 to 2 is provided at a matte side formed on one surface of the copper foil, in aspect of a crystal structure, a ratio of a texture coefficient of a (200) surface to a sum of texture coefficients of a (111) surface and the (200) surface is 30 to 80%, the copper foil has a water contact angle of 90° or below, and impurity spots existing at the surface of the copper foil have a maximum diameter of 100 μm or less, and a minimal spacing distance between the impurity spots is 1 cm or more.

摘要翻译： 另外，作为锂二次电池用集电体的铜箔，在铜箔的一面形成的无光泽面上设置结晶长宽比为0.001〜2的结核团， （200）表面的织构系数与（111）面和（200）表面的织构系数之和的比例为30〜80％，铜箔的接触角为90°， 并且存在于铜箔表面的杂质点的最大直径为100μm以下，杂质点之间的最小间隔距离为1cm以上。

公开(公告)号：US20120015206A1

公开(公告)日：2012-01-19

申请号：US13029656

申请日：2011-02-17

申请人： Dae-Young KIM ,  Byoung-Kwang Lee ,  Seung-Jun Choi

发明人： Dae-Young KIM ,  Byoung-Kwang Lee ,  Seung-Jun Choi

IPC分类号： B32B15/01

CPC分类号： H01M4/661 ,  B32B15/01 ,  B32B2307/538 ,  B32B2307/54 ,  B32B2457/10 ,  C22C9/00 ,  C25D3/38 ,  C25D7/0614 ,  H01M4/667 ,  H01M10/052 ,  H01M10/0525 ,  Y10T428/12229 ,  Y10T428/12431 ,  Y10T428/12472 ,  Y10T428/12993

摘要： A copper foil for a current collector of a lithium secondary battery has a crystalline structure, in which a ratio of the sum of texture coefficients of a (111) surface and a (200) surface to the total sum of texture coefficients of the (111), (200) and (220) surfaces is 60 to 85%, a ratio of the texture coefficient of the (111) surface to the total sum of texture coefficients of the (111), (200) and (220) is 18 to 38%, a ratio of the texture coefficient of the (200) surface thereto is 28 to 62%, and a ratio of the texture coefficient of the (220) surface thereto is 15 to 40%. The copper foil has surface roughness (Rz-JIS) of 2 μm or less, weight deviation of 3% or less, tensile strength of 30 to 40 kgf/mm2, elongation of 3 to 20%, and thickness of 1 to 35 μm.

摘要翻译： 用于锂二次电池的集电体的铜箔具有晶体结构，其中（111）表面和（200）表面的织构系数之和与（111）的织构系数的总和的比率 （111），（200）和（220）的织构系数的总和的比例为（18），（200）和（220） （200）表面的织构系数的比例为28〜62％，（220）表面的织构系数的比例为15〜40％。 铜箔的表面粗糙度（Rz-JIS）为2μm以下，重量偏差为3％以下，拉伸强度为30〜40kgf / mm 2，伸长率为3〜20％，厚度为1〜35μm。