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    • 65. 发明公开
    • ELECTRODE INCLUDING POROUS COATING LAYER, METHOD FOR MANUFACTURING SAME, AND ELECTROCHEMICAL DEVICE INCLUDING SAME
    • 具有多孔涂层,工艺用于生产和电化学装置电极,其
    • EP2838140A1
    • 2015-02-18
    • EP12873884.6
    • 2012-12-24
    • LG Chem, Ltd.
    • LEE, Joo-SungKIM, Jong-HunHA, Jeong-MinJIN, Sun-MiRYU, Bo-KyungKIM, Jin-Woo
    • H01M4/13H01M4/66H01M4/36H01M4/139
    • H01M4/13H01M2/166H01M2/1673H01M4/0404H01M4/133H01M4/139H01M4/366H01M4/622H01M4/66H01M2004/021Y02E60/122Y02P70/54
    • The present invention provides an electrode comprising a current collector; an electrode active material layer formed on at least one surface of the current collector and comprising a mixture of electrode active material particles and a first binder polymer; and a porous coating layer formed on the surface of the electrode active material layer, comprising a mixture of inorganic particles and a second binder polymer and having a thickness deviation defined by the following Formula (1), and a manufacturing method thereof: T max - T min / T avg ≤ 0.35
      wherein T max is a maximum thickness of the porous coating layer formed on the surface of the electrode active material layer, T min is a minimum thickness of the porous coating layer and T avg is an average thickness of the porous coating layer.
      The electrode of the present invention can be manufactured by the process of simultaneously drying the electrode active material layer and the porous coating layer, from which the binder polymers of the porous coating layer can be prevented from penetrating into the electrode active material layer so that the excellent qualities of the electrode can be achieved. In addition, uniform porous coating layer can be formed, which ensures the safety of the electrode.
    • 本发明提供了上电极,其包括集电体; 集电体中的至少一种形成的表面上的电极活性材料层和包括电极活性材料粒子和第一粘合剂聚合物的混合物构成; 和多孔涂层形成的电极活性物质层的表面上,其包括和第二粘合剂聚合物的无机粒子的混合物,并且具有由下式(1)所定义的厚度偏差,以及它们的制造方法:T最大 - T最小/ T平均‰¤12:35 worin t最大是形成在电极活性材料层的表面上的多孔涂层的最大厚度,T min是多孔涂层的最小厚度和T的平均值是平均厚度 多孔涂层。 本发明的电极可通过的同时干燥所述电极活性材料层和多孔涂层,从该多孔涂层的粘结剂聚合物可以渗透到电极活性材料层,从而DASS死防止工艺来制造 电极的优秀品质得以实现。 此外,均匀的多孔涂层可以形成,保证了电极的安全性。
    • 69. 发明公开
    • SEPARATOR, MANUFACTURING METHOD THEREOF, AND ELECTROCHEMICAL DEVICE EMPLOYING SAME
    • 分离器,HERSTELLUNGSVERFAHRENDAFÜRUND ELEKTROCHEMISCHE VORRICHTUNG DAMIT
    • EP2736093A2
    • 2014-05-28
    • EP12814413.6
    • 2012-07-20
    • LG Chem, Ltd.
    • LEE, Joo-SungKIM, Jong-HunKIM, Jin-Woo
    • H01M2/16H01M10/058
    • H01M2/1686H01M2/145H01M2/1646H01M2/166H01M2/1673H01M4/485H01M4/5825H01M4/622H01M4/623H01M4/625H01M10/0525Y02E60/122Y02P70/54
    • The separator of the present invention comprises a porous composite having a porous substrate and a first porous coating layer formed on at least one surface of the porous substrate and comprising a mixture of inorganic particles and a first binder polymer; and a second porous coating layer formed on a first surface of the porous composite and comprising a mixture of cathode active material particles, a second binder polymer and a first conductive material, a third porous coating layer formed on a second surface of the porous composite and comprising a mixture of anode active material particles, a third binder polymer and a second conductive material, or both of the second porous coating layer and the third porous coating layer. Also, the separator of present invention may further comprise a fourth porous coating layer formed on at least one outermost surface thereof and comprising a fourth binder polymer. In particular, in the case that an electrode-separator adhesive layer is formed, the active material functions as a passage for transferring lithium ions, thereby preventing the transferring rate of lithium ions from being reduced.
      The separator of the present invention having porous coating layers comprising a conductive material can provide very superior output characteristic in electrochemical devices due to the use of the conductive material and can prevent the penetration of the conductive material into a porous substrate, thereby prohibiting a short circuit due to the use of the conductive material.
    • 本发明的隔膜包括具有多孔基材的多孔复合材料和形成在多孔基材的至少一个表面上并包含无机颗粒和第一粘合剂聚合物的混合物的第一多孔涂层; 以及形成在所述多孔复合材料的第一表面上并包括正极活性物质颗粒,第二粘合剂聚合物和第一导电材料的混合物的第二多孔涂层,形成在所述多孔复合材料的第二表面上的第三多孔涂层, 包括阳极活性材料颗粒,第三粘合剂聚合物和第二导电材料的混合物,或第二多孔涂层和第三多孔涂层的两者。 此外,本发明的隔膜还可以包括形成在其至少一个最外表面上并包含第四粘合剂聚合物的第四多孔涂层。 特别地,在形成电极隔膜粘合剂层的情况下,活性物质用作用于转移锂离子的通道,从而防止锂离子的转移速率降低。 具有导电材料的多孔涂层的本发明的隔膜由于使用导电材料而可以在电化学装置中提供非常优异的输出特性,并且可以防止导电材料渗透到多孔基材中,从而阻止短路 由于使用导电材料。