METHOD FOR DOPING AND DEDOPING LITHIUM INTO AND FROM NEGATIVE ELECTRODE AND METHOD FOR PRODUCING NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY
    31.
    发明申请
    METHOD FOR DOPING AND DEDOPING LITHIUM INTO AND FROM NEGATIVE ELECTRODE AND METHOD FOR PRODUCING NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY 有权
    用于将锂离子和负极电极掺入和掺入的方法和用于生产用于锂二次电池的负极的方法

    公开(公告)号:US20140076729A1

    公开(公告)日:2014-03-20

    申请号:US14114948

    申请日:2012-04-06

    IPC分类号: H01M4/04 H01M4/485

    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。

    NEGATIVE ELECTRODE FOR SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    32.
    发明申请
    NEGATIVE ELECTRODE FOR SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开
    用于二次电池的负极及其制造方法和非电解电解质二次电池

    公开(公告)号:US20130244086A1

    公开(公告)日:2013-09-19

    申请号:US13820369

    申请日:2011-08-25

    IPC分类号: H01M4/62 H01M4/66

    摘要: Provided are a negative electrode for a secondary battery realizing satisfactory cycle characteristics and a method for manufacturing the same, and a nonaqueous electrolyte secondary battery having satisfactory cycle characteristics. A negative electrode for a secondary battery formed by bonding a negative electrode active material to a negative electrode collector with a negative electrode binder, in which the negative electrode binder is a polyimide or a polyamide-imide, and the negative electrode collector is a Cu alloy containing at least one metal (a) selected from the group consisting of Sn, In, Mg and Ag and has a conductivity of 50 IACS % or more. The negative electrode for a secondary battery can be manufactured by a method including forming a negative electrode layer containing the negative electrode active material and the precursor of the negative electrode binder on the negative electrode collector; and bonding the negative electrode active material to the negative electrode collector with the negative electrode binder by curing the precursor of the negative electrode binder at 250 to 350° C.

    摘要翻译: 提供一种实现令人满意的循环特性的二次电池用负极及其制造方法以及具有令人满意的循环特性的非水电解质二次电池。 通过将负极活性物质与负极粘合剂(负极粘合剂为聚酰亚胺或聚酰胺 - 酰亚胺)结合的负极活性物质形成的负极,负极集电体为Cu合金 含有选自Sn,In,Mg和Ag中的至少一种金属(a),并且具有50IACS%以上的导电率。 可以通过在负极集电体上形成含有负极活性物质的负极层和负极活性物质的前体的方法来制造二次电池用负极; 并通过在250-350℃固化负极粘合剂的前体,将负极活性物质与负极粘合剂结合。

    SECONDARY BATTERY
    35.
    发明申请
    SECONDARY BATTERY 有权
    二次电池

    公开(公告)号:US20120183843A1

    公开(公告)日:2012-07-19

    申请号:US13498799

    申请日:2010-09-29

    IPC分类号: H01M10/02 H01M4/62 H01M2/02

    摘要: An exemplary embodiment provides a lithium ion secondary battery using a high energy type anode, which enables long-life operation thereof. A secondary battery according to an exemplary embodiment comprises an electrode element in which a cathode and an anode are oppositely disposed, an electrolytic solution, and an outer packaging body which encloses the electrode element and the electrolytic solution inside; wherein the anode is formed by binding an anode active material, which comprises carbon material (a) that can absorb and desorb a lithium ion, metal (b) that can be alloyed with lithium, and metal oxide (c) that can absorb and desorb a lithium ion, to an anode collector with an anode binder; and wherein the electrolytic solution comprises a liquid medium which is hard to generate carbon dioxide at a concentration of 10 to 80 vol %.

    摘要翻译: 一个示例性实施例提供了一种使用高能型阳极的锂离子二次电池,其能够长寿命运行。 根据示例性实施例的二次电池包括阴极和阳极相对设置的电极元件,电解溶液和将电极元件和电解液内包围的外包装体; 其特征在于,所述阳极是通过结合负极活性物质而形成的,所述负极活性物质包含能够吸收和解吸锂离子的碳材料(a),可与锂合金化的金属(b)和可以吸收和解吸的金属氧化物(c) 锂离子,具有阳极粘合剂的阳极集电体; 并且其中所述电解液包含难以产生浓度为10至80体积%的二氧化碳的液体介质。

    Negative electrode for rechargeable battery
    40.
    发明授权
    Negative electrode for rechargeable battery 有权
    可充电电池负极

    公开(公告)号:US06777134B2

    公开(公告)日:2004-08-17

    申请号:US10208962

    申请日:2002-07-31

    IPC分类号: H01M458

    摘要: A negative electrode for a rechargeable battery including: a current collector, a first layer containing a conductive material to occlude and release lithium ion, the first layer formed on the current collector, a second layer containing a metal selected from lithium and lithium alloy, the second layer formed on the first layer, and a third layer containing a lithium ion conductive material, the third layer formed on the second layer. The third layer prevents the lithium and/or the lithium alloy in the second layer from being in contact with the electrolyte and smoothly feeds the lithium to the second layer to improve the efficiency of the negative electrode. The first layer can occlude and release the part of the lithium to be occluded and released, thereby reducing the volume change of the second layer. Such a structure of the negative electrode enables us to enhance cycling efficiency, and to attain long cycle life and good safety.

    摘要翻译: 一种用于可再充电电池的负极,包括:集电器,包含用于封闭和释放锂离子的导电材料的第一层,形成在集电器上的第一层,含有选自锂和锂合金的金属的第二层, 第二层形成在第一层上,第三层包含锂离子传导材料,第三层形成在第二层上。 第三层防止第二层中的锂和/或锂合金与电解质接触,并平稳地将锂馈送到第二层以提高负极的效率。 第一层可以封闭和释放待封闭和释放的锂的部分,从而减少第二层的体积变化。 负极的这种结构使得我们能够提高循环效率,并且获得长的循环寿命和良好的安全性。