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    Negative electrode for nonaqueous secondary battery
    6.
    发明授权
    Negative electrode for nonaqueous secondary battery 有权
    非水二次电池用负极

    公开(公告)号：US08197966B2

    公开(公告)日：2012-06-12

    申请号：US12306973

    申请日：2007-04-18

    申请人： Akihiro Modeki ,  Tomoyoshi Matsushima ,  Masahiro Hyakutake ,  Kiyotaka Yasuda ,  Kayoko Shinzawa ,  Yoshiki Sakaguchi

    发明人： Akihiro Modeki ,  Tomoyoshi Matsushima ,  Masahiro Hyakutake ,  Kiyotaka Yasuda ,  Kayoko Shinzawa ,  Yoshiki Sakaguchi

    IPC分类号： H01M2/16

    CPC分类号： H01M10/0525 ,  H01M4/134 ,  H01M4/386 ,  H01M4/625 ,  H01M2004/021

    摘要： A negative electrode 10 for a nonaqueous secondary battery has an active material layer 12 containing active material particles 12a. The particles 12a are coated at least partially with a metallic material 13 having low capability of lithium compound formation. The active material layer 12 has voids located between the metallic material-coated particles 12a with a void fraction of 15% to 45%. The metallic material 13 on the surface of the particles is preferably present throughout the thickness of the active material layer. The active material particles 12a are preferably of a silicon-based material. The active material layer 12 preferably contains 1% to 3% by weight of an electroconductive carbon material based on the weight of the active material particles 12a.

    摘要翻译： 非水系二次电池用负极10具有含有活性物质粒子12a的活性物质层12。 颗粒12a至少部分地被具有低的锂化合物形成能力的金属材料13涂覆。 活性物质层12具有位于金属材料涂覆颗粒12a之间的空隙，空隙率为15％至45％。 颗粒表面上的金属材料13优选存在于活性材料层的整个厚度上。 活性物质粒子12a优选为硅系材料。 基于活性物质颗粒12a的重量，活性物质层12优选含有1重量％至3重量％的导电碳材料。

    NEGATIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY
    7.
    发明申请
    NEGATIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY 有权
    用于非正常二次电池的负极

    公开(公告)号：US20090202915A1

    公开(公告)日：2009-08-13

    申请号：US12306973

    申请日：2007-04-18

    申请人： Akihiro Modeki ,  Tomoyoshi Matsushima ,  Masahiro Hyakutake ,  Kiyotaka Yasuda ,  Kayoko Shinzawa ,  Yoshiki Sakaguchi

    发明人： Akihiro Modeki ,  Tomoyoshi Matsushima ,  Masahiro Hyakutake ,  Kiyotaka Yasuda ,  Kayoko Shinzawa ,  Yoshiki Sakaguchi

    IPC分类号： H01M2/16 ,  H01M4/02

    CPC分类号： H01M10/0525 ,  H01M4/134 ,  H01M4/386 ,  H01M4/625 ,  H01M2004/021

    摘要： A negative electrode (10) for use in a non-aqueous electrolyte secondary battery comprises an active material layer (12) containing a particle (12a) of an active material. At least a part of the surface of the particle (12a) is coated with a metal material (13) having a poor ability of forming a lithium compound. A void is formed between the particles (12a) that are coated with the metal material (13). The active material layer has a void ratio of 15 to 45%. Preferably, the metal material (13) is present over the entire area of such a part of the surface of the particle that extends in the thickness-wise direction of the active material layer. Also preferably, the particle (12a) of the active material is composed of a silicone material, and the active material layer (12) contains a conductive carbon material in an amount of 1 to 3% by weight relative to the weight amount of the particle (12a) of the active material.

    摘要翻译： 用于非水电解质二次电池的负极（10）包括含有活性物质的粒子（12a）的活性物质层（12）。 颗粒（12a）的表面的至少一部分涂覆有形成锂化合物的能力差的金属材料（13）。 在被金属材料（13）涂覆的颗粒（12a）之间形成空隙。 活性物质层的空隙率为15〜45％。 优选地，金属材料（13）存在于在活性材料层的厚度方向上延伸的颗粒表面的这种部分的整个区域上。 还优选地，活性物质的粒子（12a）由硅酮材料构成，活性物质层（12）相对于粒子的重量为1〜3重量％的导电性碳材料 （12a）的活性物质。

    NEGATIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY
    8.
    发明申请
    NEGATIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY 审中-公开
    用于非正常二次电池的负极

    公开(公告)号：US20090191463A1

    公开(公告)日：2009-07-30

    申请号：US12306990

    申请日：2007-04-18

    申请人： Hitohiko Ide ,  Akihiro Modeki ,  Hideaki Matsushima ,  Daisuke Mukai ,  Kiyotaka Yasuda

    发明人： Hitohiko Ide ,  Akihiro Modeki ,  Hideaki Matsushima ,  Daisuke Mukai ,  Kiyotaka Yasuda

    IPC分类号： H01M4/58 ,  H01M4/29

    CPC分类号： H01M4/134 ,  C25D5/18 ,  C25D5/34 ,  C25D7/00 ,  H01M4/0452 ,  H01M4/29 ,  H01M4/366 ,  H01M4/38 ,  H01M10/052 ,  H01M10/0525

    摘要： A negative electrode 10 for a nonaqueous secondary battery has an active material layer 12 containing active material particles 12a. The particles 12a are coated at least partially with a coat of a metallic material 13 having low capability of lithium compound formation. The active material layer 12 has voids formed between the metallic material-coated particles 12a. When the active material layer 12 is imaginarily divided into equal halves in its thickness direction, the amount of the metallic material 13 is smaller in the half closer to the negative electrode surface than in the other half farther from the negative electrode surface. The weight ratio of [the particles/the metallic material] in the half closer to the negative electrode surface is preferably higher than that in the other half farther from the negative electrode surface.

    摘要翻译： 非水系二次电池用负极10具有含有活性物质粒子12a的活性物质层12。 颗粒12a至少部分地涂覆有具有低的锂化合物形成能力的金属材料13。 活性物质层12在金属材料涂覆颗粒12a之间形成空隙。 当活性物质层12被想象成在其厚度方向上被分成相等的一半时，金属材料13的量比靠近负电极表面的另一半更靠近负电极表面的一半较小。 更靠近负极表面的一半中的[颗粒/金属材料]的重量比优选高于离负极表面更远的另一半的重量比。

    NONAQUEOUS SECONDARY BATTERY AND METHOD OF PRODUCING THE SAME
    9.
    发明申请
    NONAQUEOUS SECONDARY BATTERY AND METHOD OF PRODUCING THE SAME 审中-公开
    非等级二次电池及其制造方法

    公开(公告)号：US20100136437A1

    公开(公告)日：2010-06-03

    申请号：US12593563

    申请日：2007-10-11

    申请人： Takuma Nishida ,  Akihiro Modeki ,  Yoshiki Sakaguchi

    发明人： Takuma Nishida ,  Akihiro Modeki ,  Yoshiki Sakaguchi

    IPC分类号： H01M6/16 ,  H01M6/04 ,  H01M6/00

    CPC分类号： H01M10/0569 ,  H01M4/0404 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/386 ,  H01M4/626 ,  H01M10/0568 ,  Y10T29/49115

    摘要： A nonaqueous secondary battery having a negative electrode containing a silicon active material and a nonaqueous solvent containing a fluorine-containing solvent. The active material layer has a fluorine content of 5 to 30 wt % based on the silicon content after at least 100 charge/discharge cycles at a rate of 50% or more of the battery's capacity. The battery is suitably produced by a method including applying a slurry containing silicon active material particles to a current collector, electroplating the resulting coating layer using a plating bath at a pH higher than 7 to coat at least part of the surface of the particles with copper, acid washing the coating layer to make a negative electrode, assembling the negative electrode together with a positive electrode, a separator, and a nonaqueous electrolyte containing a fluorine-containing solvent into a nonaqueous secondary battery, and subjecting the battery to a first charge operation at a low rate of 0.005 to 0.03 C.

    摘要翻译： 一种具有含有硅活性物质的负极和含有含氟溶剂的非水溶剂的非水系二次电池。 在电池容量的50％以上的情况下，在至少100次充放电循环之后，活性物质层的含氟量为5〜30重量％。 电池适当地通过包括将含有活性物质粒子的浆料施加到集电体上的方法制造，使用pH高于7的电镀浴对所得到的涂层进行电镀以将铜的表面的至少一部分用铜 酸洗涤涂层以制成负极，将负极与正极，隔膜和含有氟的溶剂的非水电解液组装在非水二次电池中，并对电池进行第一充电操作 在0.005至0.03℃的低速率下。