公开(公告)号：US20150325838A1

公开(公告)日：2015-11-12

申请号：US14411257

申请日：2013-07-01

申请人： Takumi TAMAKI ,  Hiroki NAGAI ,  Tetsuya WASEDA

发明人： Takumi TAMAKI ,  Hiroki NAGAI ,  Tetsuya WASEDA

IPC分类号： H01M4/131 ,  B60L11/18 ,  H01M4/587 ,  H01M4/525 ,  H01M4/505 ,  H01M4/133

CPC分类号： H01M4/131 ,  B60L50/64 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2010/4292 ,  H01M2220/20 ,  Y02E60/122 ,  Y02T10/7011

摘要： A lithium secondary battery includes an electrode body containing a positive electrode and a negative electrode, a non-aqueous electrolytic solution, and a battery case in which the electrode body and the non-aqueous electrolytic solution are housed, wherein the positive electrode includes a positive electrode active material particle of a hollow structure having a shell portion formed of a lamellar lithium transition metal oxide and a hollow portion formed therein, the long diameter of a primary particle of the lithium transition metal oxide based on SEM observation is 1 μm or less, the thickness of the shell portion based on SEM observation is 2 μm or less, the negative electrode is provided with a negative electrode active material particle formed of a carbon material, and a krypton adsorption amount of the negative electrode active material particle is 3.5 m2/g or greater but 4 m2/g or less.

摘要翻译： 锂二次电池包括含有正极和负极的电极体，非水电解液和容纳电极体和非水电解液的电池壳体，其中正极包括正极 具有由层状锂过渡金属氧化物形成的壳体部分和形成在其中的中空部分的中空结构的电极活性物质颗粒，基于SEM观察的锂过渡金属氧化物的一次粒子的长径为1μm以下， 基于SEM观察的壳部的厚度为2μm以下，负极设置有由碳材料形成的负极活性物质粒子，负极活性物质粒子的氪吸附量为3.5m 2 / g以上，4m 2 / g以下。

公开(公告)号：US08703334B2

公开(公告)日：2014-04-22

申请号：US12593412

申请日：2008-03-28

申请人： Shigeto Okada ,  Jun-ichi Yamaki ,  Tetsuya Waseda ,  Motoshi Isono

发明人： Shigeto Okada ,  Jun-ichi Yamaki ,  Tetsuya Waseda ,  Motoshi Isono

IPC分类号： H01M4/13

CPC分类号： H01M4/525 ,  C03C3/14 ,  C03C4/18 ,  H01M4/485 ,  H01M10/052 ,  H01M10/0566

摘要： Electrode active material that is used together with an electrolyte solution having an electrolyte decomposition potential Ve is represented by the general expression LixFeMyO2 and is amorphous. In the expression, x and y are values which independently satisfy 1

摘要翻译： 与具有电解质分解电位Ve的电解液一起使用的电极活性物质由通式LixFeMyO2表示，为非晶态。 在表达式中，x和y分别独立地满足1

公开(公告)号：US20150162640A1

公开(公告)日：2015-06-11

申请号：US14411599

申请日：2013-06-28

申请人： Tetsuya Waseda ,  Takashi Tokunaga

发明人： Tetsuya Waseda ,  Takashi Tokunaga

IPC分类号： H01M10/04 ,  H01M10/0525

CPC分类号： H01M10/0431 ,  H01M4/04 ,  H01M4/587 ,  H01M4/621 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2220/20 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011 ,  Y10T29/49115

摘要： A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode having, on a surface thereof, a negative electrode mixture layer containing a negative electrode active material, a thickening agent and a binder, and a separator. The positive electrode and the negative electrode are coiled together with the separator therebetween. The negative electrode active material has an average particle size of at least 5 μm and not more than 20 μm and has a fines content, defined as the cumulative frequency of the negative electrode active material having a particle size of 3 μm or less, of at least 10% and not more than 50%. The thickening agent has a 1.0% aqueous solution viscosity of at least 4,980 mPa·s. The negative electrode mixture layer is in an unpressed state.

摘要翻译： 非水电解质二次电池包括正极，负极，其表面上含有负极活性物质，增稠剂和粘合剂的负极混合物层和隔膜。 正极和负极与隔板之间卷绕在一起。 负极活性物质的平均粒径为5μm以上且20μm以下，具有细粒量，定义为粒径为3μm以下的负极活性物质的累积频率为 至少10％不超过50％。 增稠剂的1.0％水溶液粘度至少为4980mPa·s。 负极混合物层处于未压制状态。

公开(公告)号：US20140004414A1

公开(公告)日：2014-01-02

申请号：US13927527

申请日：2013-06-26

申请人： Atsushi SUGIHARA ,  Takashi KONO ,  Tetsuya WASEDA ,  Masanori KITAYOSHI ,  Tsubasa MATSUDA ,  Shuji TSUTSUMI ,  Naoyuki WADA

发明人： Atsushi SUGIHARA ,  Takashi KONO ,  Tetsuya WASEDA ,  Masanori KITAYOSHI ,  Tsubasa MATSUDA ,  Shuji TSUTSUMI ,  Naoyuki WADA

IPC分类号： H01M4/133 ,  H01M4/04 ,  H01M4/1393

CPC分类号： H01M4/133 ,  H01M4/02 ,  H01M4/0402 ,  H01M4/0404 ,  H01M4/043 ,  H01M4/1393 ,  H01M4/362 ,  H01M4/62 ,  H01M10/05 ,  H01M10/0525 ,  H01M2004/021

摘要： A non-aqueous electrolyte secondary battery includes a mixture layer of a negative electrode. The mixture layer contains carboxymethyl cellulose. A product of a median diameter (μm) of a negative electrode active material contained in the negative electrode and a ratio of a weight (wt %) of the carboxymethyl cellulose adsorbed on the negative electrode active material to a weight of the negative electrode active material is not less than 2.2 and not larger than 4.2.

摘要翻译： 非水电解质二次电池包括负极的混合层。 混合物层含有羧甲基纤维素。 包含在负极中的负极活性物质的中值粒径（mum）与吸附在负极活性物质上的羧甲基纤维素的重量（wt％）与负极活性物质的重量的比例 不低于2.2，不大于4.2。

公开(公告)号：US20140201982A1

公开(公告)日：2014-07-24

申请号：US14239282

申请日：2011-08-30

申请人： Tetsuya Waseda

发明人： Tetsuya Waseda

IPC分类号： H01M10/058

CPC分类号： H01M10/058 ,  H01M10/0525 ,  H01M10/0587 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T29/49108

摘要： A lithium-ion secondary battery includes a positive electrode plate, a negative electrode plate, and a separator. The positive electrode plate includes a positive electrode collector plate and a positive electrode active material layer formed on the surface of the positive electrode collector plate. The negative electrode plate includes a negative electrode collector plate and a negative electrode active material layer formed on the surface of the negative electrode collector plate. The separator is disposed between the positive electrode plate and the negative electrode plate. The positive electrode plate, the negative electrode plate, and the separator are stacked and wound, and each of them includes a flat portion disposed along a plane and bearing an external load and a curved portion formed to be curved. The positive electrode active material layer includes a flat region corresponding to the flat portion and a curved region corresponding to the curved portion. The density of the positive electrode active material layer in at least a portion of the curved region is higher than the density of the positive electrode active material layer in the flat region.

摘要翻译： 锂离子二次电池包括正极板，负极板和隔膜。 正极板包括在正极集电板的表面上形成的正极集电板和正极活性物质层。 负极板包括在负极集电板的表面上形成的负极集电板和负极活性物质层。 隔板设置在正极板和负极板之间。 正极板，负极板和隔板被堆叠并缠绕，并且它们各自包括沿着平面设置并承载外部负载的平坦部分和形成为弯曲的弯曲部分。 正极活性物质层包括对应于平坦部分的平坦区域和对应于弯曲部分的弯曲区域。 弯曲区域的至少一部分中的正极活性物质层的密度高于平坦区域中的正极活性物质层的密度。