MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE
    11.
    发明申请
    MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE 审中-公开
    锂二次电池性能优良的材料

    公开(公告)号:US20070292761A1

    公开(公告)日:2007-12-20

    申请号:US11831530

    申请日:2007-07-31

    摘要: Provided is a lithium mixed transition metal oxide having a composition represented by Formula I of LixMyO2 (M, x and y are as defined in the specification) having mixed transition metal oxide layers (“MO layers”) comprising Ni ions and lithium ions, wherein lithium ions intercalate into and deintercalate from the MO layers and a portion of MO layer-derived Ni ions are inserted into intercalation/deintercalation layers of lithium ions (“reversible lithium layers”) thereby resulting in the interconnection between the MO layers. The lithium mixed transition metal oxide of the present invention has a stable layered structure and therefore exhibits improved stability of the crystal structure upon charge/discharge. In addition, a battery comprising such a cathode active material can exhibit a high capacity and a high cycle stability. Further, such a lithium mixed transition metal oxide is substantially free of water-soluble bases, and thereby can provide excellent storage stability, decreased gas evolution and consequently superior high-temperature stability with the feasibility of low-cost mass production.

    摘要翻译: 本发明提供具有由式(I)表示的组成的锂混合过渡金属氧化物(M,x和y分别为 包括Ni离子和锂离子的混合的过渡金属氧化物层(“MO层”),其中锂离子插入和脱离MO层和部分MO层衍生的Ni离子插入到插层中 /脱嵌层锂离子(“可逆锂层”),从而导致MO层之间的互连。 本发明的锂混合过渡金属氧化物具有稳定的层状结构,因此在充放电时显示出晶体结构的稳定性提高。 此外,包含这种阴极活性材料的电池可以表现出高容量和高循环稳定性。 此外,这种锂混合过渡金属氧化物基本上不含水溶性碱,从而可以提供优异的储存稳定性,降低的气体逸出性以及因此优异的高温稳定性以及低成本批量生产的可行性。

    MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE
    12.
    发明申请
    MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE 有权
    锂二次电池性能优良的材料

    公开(公告)号:US20110117662A1

    公开(公告)日:2011-05-19

    申请号:US12893176

    申请日:2010-09-29

    IPC分类号: H01M4/86 G01N31/16

    摘要: Provided is a cathode active material containing a Ni-based lithium mixed transition metal oxide. More specifically, the cathode active material comprises the lithium mixed transition metal oxide having a composition represented by Formula I of LixMyO2 wherein M, x and y are as defined in the specification, which is prepared by a solid-state reaction of Li2CO3 with a mixed transition metal precursor under an oxygen-deficient atmosphere, and has a Li2CO3 content of less than 0.07% by weight of the cathode active material as determined by pH titration. The cathode active material in accordance with the present invention and substantially free of water-soluble bases such as lithium carbonates and lithium sulfates and therefore has excellent high-temperature and storage stabilities and a stable crystal structure. A secondary battery comprising such a cathode active material exhibits a high capacity and excellent characteristics, and can be produced by an environmentally friendly method with low production costs and high production efficiency.

    摘要翻译: 提供含有Ni基锂混合过渡金属氧化物的正极活性物质。 更具体地说,阴极活性材料包括具有由Li x Mn 2 O的式I表示的组成的锂混合过渡金属氧化物,其中M,x和y如说明书中所定义,其通过Li 2 CO 3与混合的固态反应 过氧化物金属前体,并且通过pH滴定测定,Li2CO3含量小于正极活性物质的0.07重量%。 根据本发明的阴极活性材料,基本上不含碳酸锂和硫酸锂等水溶性碱,因此具有优异的高温保存稳定性和稳定的晶体结构。 包含这种正极活性物质的二次电池显示出高容量和优异的特性,并且可以通过环保的方法生产,生产成本低,生产效率高。

    MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE
    13.
    发明申请
    MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE 有权
    锂二次电池性能优良的材料

    公开(公告)号:US20110114873A1

    公开(公告)日:2011-05-19

    申请号:US12896025

    申请日:2010-10-01

    IPC分类号: H01M4/52

    摘要: Provided is a lithium mixed transition metal oxide having a composition represented by Formula I of LixMyO2 (M, x and y are as defined in the specification)having mixed transition metal oxide layers (“MO layers”) comprising Ni ions and lithium ions, wherein lithium ions intercalate into and deintercalate from the MO layers and a portion of MO layer-derived Ni ions are inserted into intercalation/deintercalation layers of lithium ions (“reversible lithium layers”) thereby resulting in the interconnection between the MO layers. The lithium mixed transition metal oxide of the present invention has a stable layered structure and therefore exhibits improved stability of the crystal structure upon charge/discharge. In addition, a battery comprising such a cathode active material can exhibit a high capacity and a high cycle stability. Further, such a lithium mixed transition metal oxide is substantially free of water-soluble bases, and thereby can provide excellent storage stability, decreased gas evolution and consequently superior high-temperature stability with the feasibility of low-cost mass production.

    摘要翻译: 本发明提供具有由Ni x离子和锂离子组成的混合过渡金属氧化物层(“MO层”)的LixMyO2(M,x和y如说明书中所定义)的式I所示组成的锂混合过渡金属氧化物,其中 锂离子从MO层插入和脱嵌,并且将一部分MO层衍生的Ni离子插入到锂离子(“可逆锂层”)的嵌入/脱嵌层中,从而导致MO层之间的互连。 本发明的锂混合过渡金属氧化物具有稳定的层状结构,因此在充放电时显示出晶体结构的稳定性提高。 此外,包含这种阴极活性材料的电池可以表现出高容量和高循环稳定性。 此外,这种锂混合过渡金属氧化物基本上不含水溶性碱,从而可以提供优异的储存稳定性,降低的气体逸出性以及因此优异的高温稳定性以及低成本批量生产的可行性。

    Cathode materials for lithium battery having higher performance
    17.
    发明授权
    Cathode materials for lithium battery having higher performance 有权
    锂电池的阴极材料具有较高的性能

    公开(公告)号:US08951435B2

    公开(公告)日:2015-02-10

    申请号:US11688358

    申请日:2007-03-20

    IPC分类号: H01J7/18 H01M4/88

    摘要: Provided is a cathode material for a lithium secondary battery, comprising a heat-treated mixture of an oxide powder (a) represented by Formula I and an oxide powder (b) represented by Formula II, wherein a mixing ratio of the oxide powder (a):oxide powder (b) is in a range of 30:70 to 90:10, the oxide powder (a) is monolithic particles having a D50 of more than 10 μm, and the oxide powder (b) is agglomerated particles having a D50 of less than 10 μm, and heat treatment is carried out at a temperature of 400° C. or higher. LiCoO2  (I) LizMO2  (II) wherein 0.95

    摘要翻译: 本发明提供一种锂二次电池用正极材料,其特征在于,含有由式I表示的氧化物粉末(a)和式II表示的氧化物粉末(b)的热处理混合物,其中,氧化物粉末(a ):氧化物粉末(b)的比例范围为30:70〜90:10,氧化物粉末(a)为D50大于10μm的整体颗粒,氧化物粉末(b)为具有 D50小于10μm,在400℃以上的温度进行热处理。 LiCoO2(I)LizMO2(II)其中0.95

    High power secondary battery system comprising asymmetric charged cells
    18.
    发明授权
    High power secondary battery system comprising asymmetric charged cells 有权
    包括不对称带电电池的大功率二次电池系统

    公开(公告)号:US08846224B2

    公开(公告)日:2014-09-30

    申请号:US12917631

    申请日:2010-11-02

    摘要: Disclosed herein is a battery system including two or more kinds of cell lines having different charge and discharge characteristics, wherein each cell line includes one or more battery cells connected in series with each other. In the battery system according to the present invention, the battery cells of at least one cell line exhibit a high-rate charge characteristic, whereas the battery cells of at least another cell line exhibit a high-rate discharge characteristic. Consequently, the high-rate charge and discharge characteristics are improved, and the balance between the charge and discharge characteristics is maintained, whereby the battery system according to the present invention is used as a power source having a high power.

    摘要翻译: 这里公开了包括具有不同充电和放电特性的两种或更多种细胞系的电池系统,其中每个电池线包括彼此串联连接的一个或多个电池单元。 在根据本发明的电池系统中,至少一个电池线路的电池单元呈现高速率充电特性,而至少另一个电池线路的电池单元表现出高速率放电特性。 因此,提高了高速率充放电特性,并且保持了充放电特性之间的平衡,由此将根据本发明的电池系统用作具有高功率的电源。