公开(公告)号：US20080241647A1

公开(公告)日：2008-10-02

申请号：US12056661

申请日：2008-03-27

申请人： Atsushi FUKUI ,  Hidekazu YAMAMOTO ,  Yasuo TAKANO ,  Shouichirou SAWA ,  Taizou SUNANO ,  Maruo KAMINO

发明人： Atsushi FUKUI ,  Hidekazu YAMAMOTO ,  Yasuo TAKANO ,  Shouichirou SAWA ,  Taizou SUNANO ,  Maruo KAMINO

IPC分类号： H01M4/50 ,  H01M4/52 ,  H01M4/38 ,  H01M10/36 ,  H01M10/38

CPC分类号： H01M10/052 ,  H01M2/1653 ,  H01M4/364 ,  H01M4/386 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/622 ,  H01M4/625 ,  H01M2004/021 ,  H01M2010/4292 ,  Y10T29/49115

摘要： A cylindrical lithium secondary battery includes a positive electrode (1) having a positive electrode mixture layer disposed on a surface of a positive electrode current collector made of a conductive metal foil and containing a positive electrode active material, and a negative electrode (2) having a negative electrode mixture layer disposed on a surface of a negative electrode current collector made of a conductive metal foil and having a negative electrode active material containing silicon particles and/or silicon alloy particles. The amount of the positive electrode active material is 50 mg or less per 1 cm2 of the positive electrode, the average particle size of the silicon particles and/or silicon alloy particles is from 5 μm to 15 μm, and the theoretical electrical capacity ratio of the negative electrode to the positive electrode is 1.2 or greater.

摘要翻译： 圆筒形锂二次电池包括正极（1），其具有设置在由导电金属箔制成并包含正极活性物质的正极集电体的表面上的正极合剂层，以及负极（2），其具有 设置在由导电金属箔制成的负极集电体的表面上并具有含有硅颗粒和/或硅合金颗粒的负极活性物质的负极合剂层。 正极活性物质的量相对于正极的每1cm 2为50mg以下，硅粒子和/或硅合金粒子的平均粒径为5μm〜15μm ，负极与正极的理论电容比为1.2以上。

公开(公告)号：US20130017440A1

公开(公告)日：2013-01-17

申请号：US13352966

申请日：2012-01-18

申请人： Yasuo TAKANO

发明人： Yasuo TAKANO

IPC分类号： H01M4/66 ,  H01M4/04 ,  B05D5/12

CPC分类号： H01M4/70 ,  H01M4/0404 ,  H01M4/136 ,  H01M4/139 ,  H01M4/1397 ,  H01M4/661

摘要： A secondary cell electrode includes a mix layer containing an active substance, a conductive agent, and a binder which is swollen by coexistence with an electrolytic solution and thus has a volume thereof increased; and a current collector formed of a conductive metal foil, the mix layer being located right on the current collector. The current collector has, in a surface thereof, a first concaved portion which is opened and a first convexed portion forming a wall of the first concaved portion; at least a part of a side surface of at least either one of the first concaved portion and the first convexed portion includes at least either one of a second concaved portion and a second convexed portion; and a mixture containing at least either one of the binder, the conductive material and the active substance is put into a space in the first concaved portion.

摘要翻译： 二次电池电极包括含有活性物质，导电剂和粘合剂的混合物，其通过与电解质溶液共存而溶胀，因此其体积增加; 以及由导电金属箔形成的集电体，所述混合层位于集电体上。 集电体在其表面具有开口的第一凹部和形成第一凹部的壁的第一凸部; 第一凹部和第一凸部中的至少一方的侧面的至少一部分包括第二凹部和第二凸部中的至少一方， 并且将包含粘合剂，导电材料和活性物质中的至少一种的混合物放入第一凹部中的空间。