公开(公告)号：US09413010B2

公开(公告)日：2016-08-09

申请号：US13636811

申请日：2011-03-24

申请人： Atsushi Fukui ,  Taizo Sunano ,  Maruo Kamino

发明人： Atsushi Fukui ,  Taizo Sunano ,  Maruo Kamino

IPC分类号： H01M4/62 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M10/052 ,  C08L79/08 ,  C08G73/10

CPC分类号： H01M4/622 ,  C08G73/1067 ,  C08G73/1082 ,  C08L79/08 ,  H01M4/04 ,  H01M4/0404 ,  H01M4/134 ,  H01M4/1395 ,  H01M10/052 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T29/49115

摘要： Provided is a lithium secondary battery in which negative-electrode active material particles containing silicon and/or a silicon alloy are used and which prevents the occurrence of breakage of a binder itself and peel-off of the binder at the interfaces with the negative-electrode active material and the negative-electrode current collector and has a high energy density and an excellent cycle characteristic. The lithium secondary battery includes: a negative electrode in which a negative-electrode active material layer including negative-electrode active material particles containing silicon and/or a silicon alloy and a binder is formed on a surface of electrically conductive metal foil serving as a negative-electrode current collector; a positive electrode; and a nonaqueous electrolyte, wherein the binder contains a polyimide resin including a crosslinked structure formed by imidization of a hexavalent or higher-valent carboxylic acid or an anhydride thereof with a diamine.

摘要翻译： 提供一种锂二次电池，其中使用含有硅和/或硅合金的负极活性物质颗粒，并且防止粘合剂本身的破裂发生和粘合剂在与负极的界面处的剥离 活性物质和负极集电体，具有高能量密度和优异的循环特性。 锂二次电池包括：在作为负极的导电性金属箔的表面上形成有负极活性物质层的负极，负极活性物质层包含含有硅和/或硅合金的负极活性物质粒子和粘合剂 电极集电器; 正极; 和非水电解质，其中所述粘合剂含有通过将六价或更高价羧酸或其酸酐与二胺酰亚胺化而形成的交联结构的聚酰亚胺树脂。

公开(公告)号：US08349491B2

公开(公告)日：2013-01-08

申请号：US12385016

申请日：2009-03-27

申请人： Atsushi Fukui ,  Taizo Sunano ,  Maruo Kamino

发明人： Atsushi Fukui ,  Taizo Sunano ,  Maruo Kamino

IPC分类号： H01M4/62

CPC分类号： H01M10/052 ,  H01M4/134 ,  H01M4/621 ,  H01M4/622 ,  H01M4/661 ,  Y02T10/7011 ,  Y10T29/49115

摘要： A lithium secondary battery contains a negative electrode binder containing a polyimide resin having a structure represented by the following chemical formula (1), and the polyimide resin having a molecular weight distribution such that the weight ratio of a polyimide resin having a molecular weight of less than 100,000 and a polyimide resin having a molecular weight from 100,000 to less than 200,000 is from 50:50 to 90:10: where n is an integer equal to or greater than 1, and R is a functional group represented by the following chemical formula (2) or (3):

公开(公告)号：US20090087731A1

公开(公告)日：2009-04-02

申请号：US12232917

申请日：2008-09-25

申请人： Atsushi Fukui ,  Maruo Kamino

发明人： Atsushi Fukui ,  Maruo Kamino

IPC分类号： H01M2/02

CPC分类号： H01M10/0525 ,  H01M2/0217 ,  H01M4/131 ,  H01M4/134 ,  H01M4/624 ,  H01M10/0569 ,  H01M10/0587 ,  H01M2004/021

摘要： A lithium secondary battery includes: a positive electrode having a positive electrode active material layer disposed on a positive electrode current collector, the positive electrode active material layer containing a positive electrode binder and a positive electrode active material containing a layered lithium-transition metal composite oxide; a negative electrode having a negative electrode current collector and a negative electrode active material layer disposed on the negative electrode current collector, the negative electrode active material layer containing a negative electrode binder and a negative electrode active material containing particles of silicon and/or a silicon alloy; and a non-aqueous electrolyte. Al2O3 particles are firmly adhered to a surface of the lithium-transition metal composite oxide so that a BET specific surface area of the positive electrode active material after the adherence of the Al2O3 particles is from 1.5 times to 8 times greater than that before the adherence of the Al2O3 particles

摘要翻译： 锂二次电池包括：具有设置在正极集电体上的正极活性物质层的正极，包含正极粘合剂的正极活性物质层和含有层状锂过渡金属复合氧化物的正极活性物质 ; 具有负极集电体和设置在负极集电体上的负极活性物质层的负极，含有负极活性物质的负极活性物质层和含有硅和/或硅的粒子的负极活性物质 合金; 和非水电解质。 Al 2 O 3颗粒牢固地粘附到锂 - 过渡金属复合氧化物的表面上，使得在Al 2 O 3颗粒粘附之后的正极活性材料的BET比表面积比粘附前的比例大1.5倍至8倍 Al2O3颗粒

公开(公告)号：US06887623B2

公开(公告)日：2005-05-03

申请号：US10118309

申请日：2002-04-09

申请人： Hiroyuki Fujimoto ,  Hiroko Sanda ,  Takashi Okamoto ,  Toyoki Fujihara ,  Masahiro Iyori ,  Maruo Kamino ,  Shigeki Matsuta

发明人： Hiroyuki Fujimoto ,  Hiroko Sanda ,  Takashi Okamoto ,  Toyoki Fujihara ,  Masahiro Iyori ,  Maruo Kamino ,  Shigeki Matsuta

IPC分类号： H01M4/13 ,  H01M4/40 ,  H01M4/62 ,  H01M4/66 ,  H01M4/70 ,  H01M4/80 ,  H01M10/052

CPC分类号： H01M4/13 ,  H01M4/382 ,  H01M4/386 ,  H01M4/40 ,  H01M4/661 ,  H01M10/052

摘要： An electrode for a rechargeable lithium battery which includes a current collector and a thin film composed of active material that stores and releases lithium and deposited on the current collector, the electrode being characterized in that the current collector has irregularities on its surface and the thin film has spaces extending in a thickness direction of the thin film and configured to increase their width dimensions toward valleys of the irregularities on the current collector surface.

摘要翻译： 一种用于可再充电锂电池的电极，其包括集电器和由存储和释放锂并沉积在集电器上的活性材料构成的薄膜，该电极的特征在于集电器在其表面上具有不规则性，并且薄膜 具有在薄膜的厚度方向上延伸的空间，并将其宽度尺寸增加到集电体表面上的凹凸的谷部。

公开(公告)号：US20130022879A1

公开(公告)日：2013-01-24

申请号：US13639396

申请日：2011-04-28

申请人： Hidekazu Yamamoto ,  Kouhei Tuduki ,  Taizou Sunano ,  Maruo Kamino ,  Youichi Ohashi ,  Minoru Kotato

发明人： Hidekazu Yamamoto ,  Kouhei Tuduki ,  Taizou Sunano ,  Maruo Kamino ,  Youichi Ohashi ,  Minoru Kotato

IPC分类号： H01M10/0564

CPC分类号： H01M10/0567 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/0034 ,  Y02E60/122

摘要： Provided is a nonaqueous electrolyte secondary battery which, even in the case of using a low-viscosity solvent having a narrow potential window, can increase the electrochemical stability of the nonaqueous electrolyte solution and suppress side reactions of the nonaqueous electrolyte solution during charge and discharge to reduce the degradation of the battery characteristics and has an excellent storage characteristic in high-temperature environments and a nonaqueous electrolyte solution for the nonaqueous electrolyte secondary battery. The nonaqueous electrolyte secondary battery includes: a positive electrode containing a positive-electrode active material; a negative electrode containing a negative-electrode active material; and a nonaqueous electrolyte solution containing a solute dissolved in a nonaqueous solvent, wherein the nonaqueous electrolyte solution further contains benzotrifluoride and a diisocyanate compound and the content of benzotrifluoride is 5% by volume or more in the nonaqueous electrolyte solution except the solute.

摘要翻译： 提供一种非水电解质二次电池，即使在使用具有窄势窗的低粘度溶剂的情况下，也能够提高非水电解液的电化学稳定性，抑制非水电解液在充放电期间的副反应 降低电池特性的劣化，并且在高温环境中具有优异的储存特性和用于非水电解质二次电池的非水电解质溶液。 非水电解质二次电池包括：含有正极活性物质的正极; 含有负极活性物质的负极; 以及含有溶解在非水溶剂中的溶质的非水电解液，其中所述非水电解质溶液还含有苯并三氟化物和二异氰酸酯化合物，并且所述非水电解质溶液中除所述溶质以外，所述三氟甲苯的含量为5体积％以上。

公开(公告)号：US08101295B2

公开(公告)日：2012-01-24

申请号：US12056559

申请日：2008-03-27

申请人： Shouichiro Sawa ,  Taizou Sunano ,  Maruo Kamino

发明人： Shouichiro Sawa ,  Taizou Sunano ,  Maruo Kamino

IPC分类号： H01M6/10 ,  H01M2/02 ,  H01M2/18

CPC分类号： H01M10/0587 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0431 ,  H01M10/052 ,  H01M10/0525 ,  Y02T10/7011

摘要： A lithium secondary battery has a wound electrode assembly (5). The wound electrode assembly (5) has a negative electrode (2) having a negative electrode active material layer containing a negative electrode active material capable of alloying with lithium and having a filling density of 2.0 g/cc or less, a positive electrode (1) having a positive electrode active material layer containing a positive electrode active material made of a transition metal composite oxide, a separator (3) disposed between the positive and negative electrodes and having a penetration resistance of 500 g or greater, and a cylindrical hollow space (14) at a winding axis and in the vicinity thereof, wherein the positive electrode (1), the negative electrode (2), and the separator (3) are spirally wound. A columnar center pin (15) having a diameter of from 75% to 95% of the diameter of the hollow space is disposed in the hollow space.

摘要翻译： 锂二次电池具有卷绕电极组件（5）。 卷绕电极组件（5）具有负极（2），其具有负极活性物质层，负极活性物质层含有与锂合金化的负极活性物质，填充密度为2.0g / cc以下，正极（1 ），其具有含有由过渡金属复合氧化物构成的正极活性物质的正极活性物质层，设置在正极和负极之间并具有500g以上的耐渗透性的隔膜（3）和圆筒状中空空间 （14）在卷绕轴及其附近，其中正极（1），负极（2）和隔板（3）螺旋卷绕。 具有中空空间直径的75％至95％直径的柱状中心销（15）设置在中空空间中。

公开(公告)号：US20110200887A1

公开(公告)日：2011-08-18

申请号：US13029774

申请日：2011-02-17

申请人： Kouhei Tuduki ,  Hidekazu Yamamoto ,  Taizou Sunano ,  Maruo Kamino

发明人： Kouhei Tuduki ,  Hidekazu Yamamoto ,  Taizou Sunano ,  Maruo Kamino

IPC分类号： H01M10/02

CPC分类号： H01M10/0567 ,  H01M4/386 ,  H01M10/052

摘要： A non-aqueous electrolyte secondary battery includes a positive electrode (1), a negative electrode (2) containing a negative electrode active material, a separator 3 interposed between the electrodes (1) and (2), and a non-aqueous electrolyte containing a non-aqueous solvent and a solute dissolved in the solvent. The non-aqueous electrolyte contains a compound represented by the following chemical formula (1): wherein n is an integer of from 2 to 6, each R represents a linear saturated hydrocarbon that may be an unsubstituted or may have a substituted group, and the Rs may be the same or different groups.

摘要翻译： 非水电解质二次电池包括正极（1），含有负极活性物质的负极（2），插入电极（1）和（2）之间的隔膜3和含有 非水溶剂和溶解在溶剂中的溶质。 非水电解质含有下述化学式（1）表示的化合物：其中，n为2〜6的整数，R表示可以为未取代的或可具有取代基的直链状饱和烃， Rs可以是相同或不同的组。

公开(公告)号：US20100330424A1

公开(公告)日：2010-12-30

申请号：US12822696

申请日：2010-06-24

申请人： Kei Kobayashi ,  Yasuo Takano ,  Taizou Sunano ,  Maruo Kamino

发明人： Kei Kobayashi ,  Yasuo Takano ,  Taizou Sunano ,  Maruo Kamino

IPC分类号： H01M4/58 ,  H01M4/02

CPC分类号： H01M4/64 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/38 ,  H01M4/62 ,  H01M4/661

摘要： A negative electrode (2) for a lithium secondary battery having a negative electrode current collector (21) having an arithmetical mean surface roughness Ra of 0.01 μm or greater and a negative electrode active material layer (22) formed on the negative electrode current collector (21). The negative electrode active material layer (22) contains a negative electrode active material (22a) including a material capable of alloying with lithium. A conductive layer (23) including a material not intercalating or deintercalating lithium is formed on the negative electrode active material layer.

摘要翻译： 一种具有负极集电体（21）的锂二次电池用负极（2），其具有0.01μm以上的算术平均表面粗糙度Ra和形成在负极集电体上的负极活性物质层（22） 21）。 负极活性物质层（22）含有能够与锂合金化的材料的负极活性物质（22a）。 在负极活性物质层上形成包含不嵌锂或脱嵌锂的材料的导电层（23）。

公开(公告)号：US07767344B2

公开(公告)日：2010-08-03

申请号：US11091942

申请日：2005-03-29

申请人： Toshikazu Yoshida ,  Maruo Kamino

发明人： Toshikazu Yoshida ,  Maruo Kamino

IPC分类号： H01M4/40 ,  H01M4/70 ,  H01M4/58

CPC分类号： H01M10/052 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/405 ,  H01M4/66 ,  H01M4/70 ,  H01M10/0565 ,  H01M2004/021 ,  H01M2004/027

摘要： A lithium secondary battery includes a negative electrode, a positive electrode, and a non-aqueous electrolyte. The negative electrode includes a negative electrode current collector (3b) having an irregular surface and a negative electrode active material layer (3a) formed on the surface. In the lithium secondary battery, the negative electrode active material layer (3a) is composed of a material that alloys with Li; thickness of the negative electrode active material layer (3a) (μm)/10-point mean surface roughness Rz of the negative electrode current collector (3b) (μm) is in the range of from 0.5 to 4; and tensile strength of the negative electrode current collector (3b) (N/mm2) at 25° C.×the negative electrode current collector base thickness (mm)/thickness of the negative electrode active material layer (3a) (μm) on one side of current collector is 2 or greater.

摘要翻译： 锂二次电池包括负极，正极和非水电解质。 负极包括具有不规则表面的负极集电体（3b）和形成在表面上的负极活性物质层（3a）。 在锂二次电池中，负极活性物质层（3a）由与Li合金的材料构成; 负极活性物质层（3a）的厚度（μm）/负极集电体（3b）的10点平均表面粗糙度Rz（μm）在0.5〜4的范围内; 和负极集电体（3b）的拉伸强度（N / mm2）（25℃）×负极集电体基底厚度（mm）/负极活性物质层（3a）的厚度（μm） 集电极侧为2个以上。

公开(公告)号：US20090246632A1

公开(公告)日：2009-10-01

申请号：US12385016

申请日：2009-03-27

申请人： Atsushi Fukui ,  Taizo Sunano ,  Maruo Kamino

发明人： Atsushi Fukui ,  Taizo Sunano ,  Maruo Kamino

IPC分类号： H01M4/62 ,  H01M4/82

CPC分类号： H01M10/052 ,  H01M4/134 ,  H01M4/621 ,  H01M4/622 ,  H01M4/661 ,  Y02T10/7011 ,  Y10T29/49115

摘要： A lithium secondary battery contains a negative electrode binder containing a polyimide resin having a structure represented by the following chemical formula (1), and the polyimide resin having a molecular weight distribution such that the weight ratio of a polyimide resin having a molecular weight of less than 100,000 and a polyimide resin having a molecular weight from 100,000 to less than 200,000 is from 50:50 to 90:10: where n is an integer equal to or greater than 1, and R is a functional group represented by the following chemical formula (2) or (3):

摘要翻译： 锂二次电池包含含有具有由以下化学式（1）表示的结构的聚酰亚胺树脂的负极粘合剂，聚酰亚胺树脂的分子量分布使得分子量较小的聚酰亚胺树脂的重量比 100,000以上，分子量为100,000〜小于20,000的聚酰亚胺树脂为50:50〜90:10，n为1以上的整数，R为下述化学式所示的官能团 （2）或（3）：