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    LITHIUM SECONDARY CELL
    12.
    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％。

    Method for doping and dedoping lithium into and from negative electrode and method for producing negative electrode for lithium secondary battery
    15.
    发明授权
    Method for doping and dedoping lithium into and from negative electrode and method for producing negative electrode for lithium secondary battery 有权
    从负极中掺杂和去掺杂锂的方法和用于生产锂二次电池的负极的方法

    公开(公告)号：US09123928B2

    公开(公告)日：2015-09-01

    申请号：US14114948

    申请日：2012-04-06

    申请人： Jiro Iriyama ,  Tetsuya Kajita ,  Daisuke Kawasaki ,  Tatsuji Numata

    发明人： Jiro Iriyama ,  Tetsuya Kajita ,  Daisuke Kawasaki ,  Tatsuji Numata

    IPC分类号： H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/485

    CPC分类号： H01M4/0459 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/485 ,  Y02E60/122 ,  Y02P70/54

    摘要： The object of an exemplary embodiment of the invention is to provide a negative electrode having excellent cycle property. An exemplary embodiment of the invention a method for doping and dedoping lithium for the first time after a negative electrode for a lithium secondary battery comprising silicon oxide as an active material is produced, comprising doping the lithium within the following current value range (A) and within the following doped amount range (B); current value range (A): a range of a current value in which a doped amount in which only one peak appears at 1 V or less on the V-dQ/dV curve becomes maximum, wherein the V-dQ/dV curve represents a relationship between voltage V of the negative electrode with respect to a lithium reference electrode and dQ/dV that is a ratio of variation dQ of lithium dedoped amount Q in the negative electrode to variation dV of the voltage V, and doped amount range (B): a range of a doped amount in which only one peak appears at 1 V or less on the V-dQ/dV curve.

    摘要翻译： 本发明的示例性实施方案的目的是提供具有优异的循环性能的负极。 本发明的一个示例性实施方案是制备在包含氧化硅作为活性材料的锂二次电池的负极之后首次掺杂和去掺杂锂的方法，包括在随后的电流值范围（A）和 在下面的掺杂量范围（B）内; 电流值范围（A）：其中在V-dQ / dV曲线上仅出现1V或更小的一个峰值的掺杂量的电流值的范围变得最大，其中V-dQ / dV曲线表示 负极的电压V与锂参比电极之间的关系和作为负极中的脱锂量Q的变化量dQ与电压V的变化dV的比的dQ / dV以及掺杂量范围（B） ：在V-dQ / dV曲线上只有一个峰出现在1V或更小的掺杂量的范围。

    Positive electrode active material for secondary cell, positive electrode for secondary cell using same, and secondary cell
    17.
    发明授权
    Positive electrode active material for secondary cell, positive electrode for secondary cell using same, and secondary cell 有权
    二次电池用正极活性物质，二次电池用正极和二次电池

    公开(公告)号：US07179566B2

    公开(公告)日：2007-02-20

    申请号：US10486150

    申请日：2003-03-07

    申请人： Daisuke Kawasaki ,  Takehiro Noguchi ,  Tatsuji Numata

    发明人： Daisuke Kawasaki ,  Takehiro Noguchi ,  Tatsuji Numata

    IPC分类号： H01M4/58 ,  H01M4/50 ,  H01M4/52

    CPC分类号： H01M10/052 ,  H01M4/1315 ,  H01M4/505 ,  H01M4/525

    摘要： A cathode active material for a secondary battery including a lithium-manganese composite oxide having a spinel structure and represented by the following general formula (I), Lia(MxMn2-x-y-zYyAz)(O4-wZw) (I), wherein 0.5≦x≦1.2, 0≦y, 0≦z, x+y+z

    摘要翻译： 一种二次电池用正极活性物质，其包含具有尖晶石结构并由以下通式（I）表示的锂锰复合氧化物，其中，M 1，M 2， （O 4 -W Z Z）Z 2 O 3 Z 2 O 2 Z 3 Z Z ）（I）其中0.5 <= x <= 1.2,0 <= y，0 <= z，x + y + z <2,0 <= a <= 1.2和0 <= w < M至少包含Co，并且还可以含有选自Ni，Fe，Cr和Cu中的至少一种元素; Y是选自Li，Be，B，Na，Mg，Al，K和Ca中的至少一种元素; A是Ti和Si中的至少一种; Z是F和Cl中的至少一个。 当用于二次电池的阴极活性材料用作二次电池的阴极时，可以在抑制循环之后的容量降低和晶体结构在较高温度下的劣化的可靠性降低的同时，实现更高的操作 。