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    LITHIUM SECONDARY CELL
    1.
    发明申请
    LITHIUM SECONDARY CELL 审中-公开
    锂二次细胞

    公开(公告)号：US20140045069A1

    公开(公告)日：2014-02-13

    申请号：US14112973

    申请日：2012-04-27

    申请人： Tatsuji Numata ,  Tetsuya Kajita ,  Hiroo Takahashi ,  Daisuke Kawasaki

    发明人： Tatsuji Numata ,  Tetsuya Kajita ,  Hiroo Takahashi ,  Daisuke Kawasaki

    IPC分类号： H01M4/36

    CPC分类号： H01M4/364 ,  H01M4/131 ,  H01M4/136 ,  H01M4/386 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/052 ,  H01M2010/4292

    摘要： Provided is a lithium secondary cell in which elution of manganese from a manganese olivine compound into an electrolyte is suppressed, a high level of safety is obtained, the charge/discharge cycle efficiency and suppression of leakage of manganese during storage can be maintained over a long period, a long lifespan is obtained, a rapid decrease in cell voltage near the end of discharge is suppressed, and output characteristics are enhanced, when a manganese olivine compound having excellent stability during charge/discharge is used as the principal component in the positive electrode active material. The positive electrode contains a positive electrode active material containing an olivine compound represented by LiMm1-aXaPO4 (where X represents Mg and/or Fe, and a represents a value that satisfies 0≦a≦0.3) and a lithium nickel oxide represented by LiNi1-bZbO2 (where Z represents one or more selected from Co, Mn, Al, Mg, and V; and b represents a value that satisfies 0≦b≦0.4), the content of the olivine compound being from 50 to 95 mass %.

    摘要翻译： 本发明提供一种能够抑制锰从锰橄榄石化合物溶解成电解质的锂二次电池，能够获得高水平的安全性，能够在长时间内保持充放电循环效率和锰的泄漏抑制 时间长，寿命长，抑制放电结束附近的电池电压的急剧下降，并且当充放电时的稳定性优异的锰橄榄石化合物作为正极中的主要成分时，能够提高输出特性 活性物质 正极含有含有由LiMm1-aXaPO4（其中X表示Mg和/或Fe，a表示满足0≤a≤0.3的值）的LiMm1-aXaPO4表示的橄榄石化合物的正极活性物质和由LiNi1-aXaPO4表示的锂镍氧化物， bZbO2（其中Z表示选自Co，Mn，Al，Mg和V中的一种或多种; b表示满足0 @ b @ 0.4的值），橄榄石化合物的含量为50〜95质量％。

    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    3.
    发明申请
    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开
    非电解电解质二次电池

    公开(公告)号：US20130101899A1

    公开(公告)日：2013-04-25

    申请号：US13806020

    申请日：2011-06-06

    申请人： Tetsuya Kajita ,  Hiroo Takahashi ,  Ryuichi Kasahara ,  Jiro Iriyama ,  Tatsuji Numata

    发明人： Tetsuya Kajita ,  Hiroo Takahashi ,  Ryuichi Kasahara ,  Jiro Iriyama ,  Tatsuji Numata

    IPC分类号： H01M4/485 ,  H01M10/04 ,  H01M4/525

    CPC分类号： H01M4/485 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/525 ,  H01M10/04 ,  Y10T29/49108

    摘要： There is provided a nonaqueous electrolyte secondary battery having high capacity in which the reduction in the capacity of the battery due to the irreversible capacity in the first charge and discharge is suppressed using a high capacity positive electrode. The nonaqueous electrolyte secondary battery according to the exemplary embodiment includes a positive electrode and a negative electrode including at least one negative electrode active material selected from the group consisting of Si, a Si oxide and carbon, wherein the positive electrode includes a positive electrode active material including an oxide capable of absorbing and releasing lithium and a transition metal oxide, the transition metal oxide being represented by Li2MO2 (wherein M is at least one of Cu and Ni) and including a square-planar coordination MO4 structure, the square-planar coordination MO4 structure forming a one-dimensional chain which shares an edge formed by two opposing oxygen atoms, wherein the relation Z≦Y is satisfied provided that Y represents the first charge capacity of the negative electrode, and Z represents the first charge capacity of the positive electrode.

    摘要翻译： 提供了一种高容量的非水电解质二次电池，其中使用高容量正极抑制了由于第一次充放电中的不可逆容量引起的电池容量的降低。 本实施方式的非水电解质二次电池包括正极和负极，所述正极和负极具有选自由Si，Si氧化物和碳组成的组中的至少一种负极活性物质，其中所述正极包含正极活性物质 包括能够吸收和释放锂的氧化物和过渡金属氧化物，所述过渡金属氧化物由Li2MO2（其中M是Cu和Ni中的至少一种）表示，并且包括正方形协调MO4结构，所述正方形配位 形成共享由两个相对的氧原子形成的边缘的一维链的MO4结构，其中满足关系Z @ Y，其中Y表示负极的第一充电容量，Z表示正极的第一充电容量 电极。

    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    8.
    发明申请
    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开
    非电解电解质二次电池

    公开(公告)号：US20130280594A1

    公开(公告)日：2013-10-24

    申请号：US13977895

    申请日：2011-01-18

    申请人： Tetsuya Kajita ,  Ryuichi Kasahara ,  Jiro Iriyama ,  Tatsuji Numata

    发明人： Tetsuya Kajita ,  Ryuichi Kasahara ,  Jiro Iriyama ,  Tatsuji Numata

    IPC分类号： H01M4/134

    CPC分类号： H01M4/134 ,  H01M4/131 ,  H01M4/36 ,  H01M4/386 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2004/021

    摘要： In a nonaqueous electrolyte secondary battery using silicon and silicon oxide as a negative electrode active material, the charge and discharge cycle characteristics are improved. A nonaqueous electrolyte secondary battery in the exemplary embodiment comprises a sheet-shaped negative electrode comprising a negative electrode active material layer comprising a composite of silicon and silicon oxide formed on a negative electrode current collector, and a sheet-shaped positive electrode comprising a positive electrode active material layer formed on a positive electrode current collector, wherein the negative electrode is disposed opposed to the positive electrode via a separator, a peripheral edge portion of the negative electrode active material layer is disposed within a peripheral edge portion of the positive electrode active material layer, and a relationship of 1.00

    摘要翻译： 在使用硅和氧化硅作为负极活性物质的非水电解质二次电池中，充放电循环特性得到改善。 本实施方式的非水电解质二次电池包括由在负极集电体上形成的由硅和氧化硅构成的复合体的负极活性物质层和包含正极集电体的片状正极的片状负极， 形成在正极集电体上的活性物质层，其中，所述负极经由隔膜与所述正极配置成相对，所述负极活性物质层的周缘部配置在所述正极活性物质的周缘部 当正极的充电容量为a，负极的充电容量为b，b / a = c时，满足1.00