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    NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD OF THE SAME, AND LITHIUM SECONDARY BATTERY CONTAINING THE SAME
    1.
    发明公开
    NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD OF THE SAME, AND LITHIUM SECONDARY BATTERY CONTAINING THE SAME 审中-公开
    二次电池用负极活性材料的锂，工艺用于生产和锂二次电池

    公开(公告)号：EP2282367A1

    公开(公告)日：2011-02-09

    申请号：EP09738953.0

    申请日：2009-04-28

    申请人： Ls Mtron Ltd. ,  SHOWA DENKO K.K.

    发明人： HAN, Jung-Min ,  OH, Jeong-Hun ,  KIM, Jong-Sung ,  YOUM, Chul ,  HAN, Kyung-Hee ,  TAKEUCHI, Masataka ,  SUDOH, Akinori ,  SOTOWA, Chiaki

    IPC分类号： H01M4/58

    CPC分类号： H01M4/587 ,  H01M4/362 ,  H01M4/364 ,  H01M10/052

    摘要： The present invention relates to a negative electrode active material for a lithium secondary battery, a preparation method thereof, and a lithium secondary battery containing the negative electrode active material. The negative electrode active material for the lithium secondary battery according to the present invention is formed by mixing: a carbon material coated with vapor growth carbon fiber (VGCF) and amorphous graphite; and one or more kinds of other carbon material selected from natural graphite, artificial graphite, amorphous-coated graphite, resin-coated graphite and amorphous carbon. According to the present invention, when the negative electrode active material is prepared, the carbon fiber is uniformly dispersed-throughout the carbon material, and the carbon material is coated with the amorphous graphite and then mixed with other carbon materials, and thus, a high electrode density can be achieved. Accordingly, even with high electrode density, the invention can provide the negative electrode active material with excellent electrochemical properties such as charge/discharge efficiency and cycle characteristics.

    摘要翻译： 本发明涉及一种负极活性物质的锂二次电池，其制备方法，以及含有该负极活性物质的锂二次电池。 用于锂二次电池gemäß到本发明的负极活性材料通过混合而形成：涂布有气相生长碳纤维（VGCF）和非晶质石墨的碳材料; 和其他的碳材料的一种或多种选自天然石墨，人造石墨，非晶质被覆石墨，树脂被覆石墨和无定形碳中选择。 。根据本发明，当制备负电极活性材料，碳纤维均匀地分散，在整个碳材料，并且该碳材料涂覆有非晶质石墨，然后与其他碳材料混合，因此，高 电极密度就可以实现。 如充电/放电效率和循环特性：因此，即使以高电极密度，本发明能够具有优良的电化学性能提供负电极活性材料。

    CATHODE ACTIVE MATERIAL FOR A SECONDARY BATTERY, ELECTRODE FOR A SECONDARY BATTERY AND SECONDARY BATTERY COMPRISING THE SAME, AND A PRODUCTION METHOD THEREFOR
    3.
    发明公开
    CATHODE ACTIVE MATERIAL FOR A SECONDARY BATTERY, ELECTRODE FOR A SECONDARY BATTERY AND SECONDARY BATTERY COMPRISING THE SAME, AND A PRODUCTION METHOD THEREFOR 审中-公开
    阴极活性材料用于二次电池，电极用于生产二次电池与二次电池AND PROCESS

    公开(公告)号：EP2280437A1

    公开(公告)日：2011-02-02

    申请号：EP09734947.6

    申请日：2009-02-19

    申请人： Ls Mtron Ltd.

    发明人： HAN, Kyung-Hee ,  OH, Jeong-Hun ,  KIM, Jong-Sung ,  YOUM, Chul ,  HAN, Jung-Min

    IPC分类号： H01M4/36

    CPC分类号： H01M4/587 ,  C04B35/522 ,  C04B35/532 ,  C04B2235/425 ,  C04B2235/5436 ,  C04B2235/5472 ,  C04B2235/5481 ,  C04B2235/604 ,  C04B2235/608 ,  C04B2235/661 ,  C04B2235/77 ,  H01M4/133 ,  H01M4/366

    摘要： A negative active material for a secondary battery, an electrode for a secondary battery including the same, a secondary battery, and a manufacturing method thereof are disclosed. The negative active material for a secondary battery includes a core carbon material whose edge is partially or entirely coated with a carbide layer, wherein a particle size distribution (PSD) broad value ranges from 0.1 to 0.85 and, when the negative active material is pressed at a pressure of 2 tons, a pore volume rate before and after the compression is 0.2 or greater. A discharge capacity, efficiency, and capacity retention in a long-term cycle can be improved by optimizing the PSB broad value related to a particle distribution among physical properties of a carbon material-based negative active material for a secondary battery, and a pore volume rate of the negative active material before and after compression.

    摘要翻译： 用于二次电池的负极活性材料的电极的二次电池包括相同，二次电池，以及其制造方法进行游离缺失光盘。 用于二次电池的负极活性材料包括芯碳材料，其边缘部分地或完全地涂覆有碳化物层，worin的粒度分布（PSD）宽值范围从0.1至0.85，并且当被按压的负极活性物质 2吨的压力，之前和之后的压缩的孔隙体积率为0.2或更大。 放电容量，效率和容量在一个长期的循环保持率可通过优化涉及一种用于二次电池的基于碳材料的负极活性材料的物理特性中的粒子分布中的PSB宽值和孔隙体积可以提高 所述负极活性物质的速率压缩前后。

    NEGATIVE ACTIVE MATERIAL FOR SECONDARY BATTERY, AND ELECTRODE AND SECONDARY BATTERY INCLUDING THE SAME
    4.
    发明公开
    NEGATIVE ACTIVE MATERIAL FOR SECONDARY BATTERY, AND ELECTRODE AND SECONDARY BATTERY INCLUDING THE SAME 审中-公开
    负极活性材料二次电池电极和二次电池，从而

    公开(公告)号：EP2266157A1

    公开(公告)日：2010-12-29

    申请号：EP08873866.1

    申请日：2008-12-19

    申请人： Ls Mtron Ltd.

    发明人： YOUM, Chul ,  OH, Jeong-Hun ,  KIM, Jong-Sung ,  HAN, Kyung-Hee ,  HAN, Jeong-Min

    IPC分类号： H01M4/36

    CPC分类号： H01M10/0525 ,  H01M4/1393 ,  H01M4/587

    摘要： A negative active material for a secondary battery according to the present invention includes a core carbon material and a carbide layer formed on at least a portion of an edge of the core carbon material, and has a difference (an amount of compression density change) of 0.5g/cc or more between a first compression density measured when a pressure of 63.704 MPa is applied for 2 seconds and a second compression density measured when a pressure of 6.3704 MPa is applied for 2 seconds. A secondary battery manufactured using the negative active material according to the present invention can prevent deterioration of characteristics caused by destruction of the carbide layer during a compression process in the manufacture of an electrode of a secondary battery. As a result, a cycle efficiency and a discharging capacity retention rate at a long cycle can be improved.

    NEGATIVE ACTIVE MATERIAL FOR SECONDARY BATTERY, AND ELECTRODE AND SECONDARY BATTERY INCLUDING THE SAME
    5.
    发明公开
    NEGATIVE ACTIVE MATERIAL FOR SECONDARY BATTERY, AND ELECTRODE AND SECONDARY BATTERY INCLUDING THE SAME 审中-公开
    负极活性材料二次电池电极和二次电池，从而

    公开(公告)号：EP2266156A1

    公开(公告)日：2010-12-29

    申请号：EP08873810.9

    申请日：2008-12-19

    申请人： Ls Mtron Ltd.

    发明人： KIM, Jong-Sung ,  OH, Jeong-Hun ,  YOUM, Chul ,  HAN, Kyung-Hee ,  HAN, Jeong-Min

    IPC分类号： H01M4/36

    CPC分类号： H01M4/587 ,  H01M4/362 ,  H01M10/0525

    摘要： A negative active material for a secondary battery includes a core carbon material, and a carbide layer formed on at least a portion of an edge of the core carbon material, and has a specific surface area ratio of 1.6 or less and a sphericity ratio of 0.6 or more when the negative active material is compressed with a pressure of 1.3 ton per 1 cm2 for 2 seconds. A secondary battery manufactured using the negative active material can prevent deterioration of characteristics caused by destruction of the carbide layer and deformation of core carbon material that may occur during a compression process performed to manufacture an electrode for the secondary battery. As a result, the secondary battery can be improved in aspect of a discharging capacity, a cycle efficiency and a discharging capacity retention rate at a long cycle.