公开(公告)号：US20090017377A1

公开(公告)日：2009-01-15

申请号：US12167600

申请日：2008-07-03

申请人： Yasutaka KOGETSU ,  Tatsuki HIRAOKA ,  Takuhiro NISHIMURA

发明人： Yasutaka KOGETSU ,  Tatsuki HIRAOKA ,  Takuhiro NISHIMURA

IPC分类号： H01M4/24

CPC分类号： H01M4/70 ,  H01M4/02 ,  H01M4/134 ,  H01M4/661 ,  H01M4/78 ,  H01M10/052 ,  H01M2004/021

摘要： A current collector including a substrate, a plurality of projections, and a chipped portion is provided. The substrate is a metal sheet. The projections are formed on the surface of the substrate. The chipped portion is an aggregate of two or more, preferably 2 to 100 of minute projections. The minute projections are formed on the substrate surface, and are the protrusions having the height of below 35% of the average height of the projections. By forming an electrode active material layer on the face of the current collector where the projections are formed to make an electrode, the detachment of the electrode active material layer, and the spread of the detachment are significantly curbed. By using this electrode, a non-aqueous electrolyte secondary battery which have high battery capacity and energy density, excellent charge and discharge cycle characteristics, and which is capable of keeping a high-output stably for a long period of time can be obtained.

摘要翻译： 提供了包括基板，多个突起和切屑部的集流体。 基板是金属板。 突起形成在基板的表面上。 切屑部分是两个或更多个，优选2至100个微小突起的聚集体。 微小突起形成在基板表面上，并且是具有低于突起的平均高度的35％的高度的突起。 通过在形成有突起的集电体的表面上形成电极活性物质层以形成电极，电极活性物质层的分离和分离的扩散被明显地抑制。 通过使用该电极，可以获得具有高电池容量和能量密度，优异的充放电循环特性并且能够长时间稳定地保持高输出的非水电解质二次电池。

公开(公告)号：US20120021285A1

公开(公告)日：2012-01-26

申请号：US13167284

申请日：2011-06-23

申请人： Yasutaka KOGETSU ,  Takuhiro NISHIMURA

发明人： Yasutaka KOGETSU ,  Takuhiro NISHIMURA

IPC分类号： H01M4/134 ,  H01M4/1395

CPC分类号： H01M10/0525 ,  H01M4/0402 ,  H01M4/0421 ,  H01M4/386 ,  H01M4/387 ,  H01M4/661 ,  H01M6/40 ,  Y10T29/49108 ,  Y10T29/49112

摘要： A negative electrode for a lithium ion secondary battery includes a current collector and a negative electrode active material layer supported on a surface of the current collector. The negative electrode active material layer includes a plurality of granular particles that include an alloyable active material. The granular particles are supported on a region of the current collector excluding a peripheral region that has a width of 20 μm to 500 μm from the edge thereof.

摘要翻译： 锂离子二次电池用负极包括集电体和负极活性物质层，负极在集电体的表面上。 负极活性物质层包括多个粒状粒子，其包含可合金化的活性物质。 除了从其边缘的宽度为20μm至500μm的周边区域，粒状颗粒被支撑在集电器的区域上。