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    LITHIUM SECONDARY BATTERY
    4.
    发明申请
    LITHIUM SECONDARY BATTERY 审中-公开
    锂二次电池

    公开(公告)号：US20150044535A1

    公开(公告)日：2015-02-12

    申请号：US14344125

    申请日：2012-09-24

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Kei Kobayashi ,  Atsushi Fukui ,  Taizou Sunano ,  Maruo Kamino

    IPC: H01M10/04 ,  H01M4/38 ,  H01M4/60 ,  H01M10/052 ,  H01M2/02 ,  H01M4/66

    CPC classification number: H01M10/0431 ,  H01M2/02 ,  H01M2/022 ,  H01M2/024 ,  H01M4/134 ,  H01M4/386 ,  H01M4/602 ,  H01M4/622 ,  H01M4/661 ,  H01M4/662 ,  H01M4/667 ,  H01M10/052 ,  H01M10/0587

    Abstract: A lithium secondary battery which is unlikely to be deformed during charging and discharging. A lithium secondary battery includes a spiral-shaped electrode assembly and a cylindrical battery container. The battery container receives the electrode assembly. The electrode assembly includes a negative electrode, a positive electrode, and a separator. The negative electrode includes a negative electrode collector and a negative electrode active material layer. The negative electrode active material layer is disposed on the negative electrode collector. The negative electrode active material layer contains a negative electrode active material forming an alloy with lithium. The positive electrode faces the negative electrode. The separator is disposed between the negative electrode and the positive electrode. When A is a proof stress of the negative electrode collector multiplied by the thickness thereof and a capacity to be charged per unit area of the negative electrode is represented by B, A≧0.075×B−3 is satisfied.

    Abstract translation: 锂二次电池在充放电时不易变形。 锂二次电池包括螺旋形电极组件和圆柱形电池容器。 电池容器接收电极组件。 电极组件包括负电极，正电极和隔膜。 负极包括负极集电体和负极活性物质层。 负极活性物质层设置在负极集电体上。 负极活性物质层含有与锂形成合金的负极活性物质。 正极面向负极。 隔板设置在负极和正极之间。 当A为负极集电体的校正应力乘以其厚度时，负极的每单位面积的充电能力由B表示，则满足A≥0.075×B-3。

    Nonaqueous electrolyte secondary battery
    5.
    发明授权
    Nonaqueous electrolyte secondary battery 有权

    公开(公告)号：US10297826B2

    公开(公告)日：2019-05-21

    申请号：US15551843

    申请日：2016-02-18

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Kouhei Tuduki ,  Atsushi Fukui

    IPC: H01M4/525 ,  H01M4/48 ,  H01M4/36 ,  H01M4/505 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/52 ,  H01M10/052 ,  H01M4/02

    Abstract: It is an object of the present invention to provide a nonaqueous electrolyte secondary battery with improved output characteristics. An example of an embodiment of the present invention provides a nonaqueous electrolyte secondary battery comprising an electrode assembly having a structure in which a positive electrode plate and a negative electrode plate are stacked with a separator therebetween. The positive electrode plate contains a lithium transition metal oxide containing tungsten as a positive electrode active material and also contains a phosphate compound. The negative electrode plate contains a graphitic carbon material and an amorphous/noncrystalline carbon material as negative electrode active materials and includes a coating of tungsten or a tungsten compound on the surface of the amorphous/noncrystalline carbon material.

    NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES
    10.
    发明申请
    NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES 审中-公开
    用于非电解电解质二次电池的负极电极活性材料

    公开(公告)号：US20160336586A1

    公开(公告)日：2016-11-17

    申请号：US15112793

    申请日：2015-01-22

    Applicant: SANYO ELECTRIC CO., LTD.

    Inventor： Kouhei Tuduki ,  Ayano Toyoda ,  Atsushi Fukui ,  Taizou Sunano

    IPC: H01M4/134 ,  H01M4/62 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/36

    CPC classification number: H01M4/134 ,  H01M4/366 ,  H01M4/386 ,  H01M4/62 ,  H01M10/0525 ,  H01M2004/027

    Abstract: Provided is a negative electrode active material, containing at least silicon, for nonaqueous electrolyte secondary batteries. Since the negative electrode active material contains silicon, the negative electrode active material has high capacity and excellent cycle characteristics. A negative electrode active material for nonaqueous electrolyte secondary batteries contains at least silicon. At least, one portion of the surface of each of primary particles containing silicon is covered with an inert phase made of a silicon compound with a silicon oxidation number higher than that of the silicon, a metal-silicon alloy, or metal. The primary particles containing silicon may form secondary particles. The silicon compound with a silicon oxidation number higher than that of silicon is preferably Li2Si2O5, Li2SiO3, or Li4SiO4. Furthermore, the metal-silicon alloy is preferably FeSi and the metal is preferably Ti. Furthermore, the crystallite size of silicon is 500 Å or less.

    Abstract translation: 提供一种负极活性物质，至少含有硅，用于非水电解质二次电池。 由于负极活性物质含有硅，因此负极活性物质具有高容量和优异的循环特性。 非水电解质二次电池用负极活性物质至少含有硅。 至少有一部分含有硅的一次粒子的表面被硅氧化数高于硅，金属硅合金或金属的硅化合物制成的惰性相覆盖。 含硅的初级颗粒可以形成二次颗粒。 硅氧化数高于硅的硅化合物优选为Li 2 Si 2 O 5，Li 2 SiO 3或Li 4 SiO 4。 此外，金属 - 硅合金优选为FeSi，金属优选为Ti。 此外，硅的微晶尺寸为500以下。

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