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    • 3. 发明授权
    • Cathode active material and secondary battery comprising the same
    • 阴极活性物质和包含其的二次电池
    • US08084159B2
    • 2011-12-27
    • US12523392
    • 2008-01-18
    • Pil-Kyu ParkYoung-Sun ParkJae-Won Lee
    • Pil-Kyu ParkYoung-Sun ParkJae-Won Lee
    • H01M4/58
    • H01M4/485H01M4/02H01M4/366H01M4/505H01M4/525H01M4/5825H01M10/052H01M10/0525H01M2004/021
    • Disclosed are a cathode active material and a secondary battery including the same. Herein, the cathode active material includes (a) a first lithium-containing metal composite oxide and (b) a second lithium-containing metal composite oxide coated on an entire particle surface of the first lithium-containing metal composite oxide, the second lithium-containing metal composite oxide having a higher resistance and a lower potential vs. lithium potential (Li/Li″ 1) than the first lithium-containing metal composite oxide. In the disclosed cathode active material, an entire surface of a first lithium-containing metal composite oxide is coated with a second lithium-containing metal composite oxide having a high resistance value and a low potential vs. lithium potential. Therefore, during an internal short of a secondary battery, it is possible to slow down the moving rate of a large amount of lithium ions and electrons from an anode to a cathode, and thus to prevent heat generation caused by the occurrence of temporary over-current. Also, it is possible to increase the temperature where a cathode active material is decomposed and gas is generated, and to improve thermal stability by inhibiting side reactions of the cathode active material and electrolyte.
    • 公开了一种正极活性物质和包含该正极活性物质的二次电池。 这里,正极活性物质包含(a)第一含锂金属复合氧化物和(b)涂覆在第一含锂金属复合氧化物的整个颗粒表面上的第二含锂金属复合氧化物, 含有比第一含锂金属复合氧化物更高的电阻和更低的电位对锂电位(Li / Li“1)的含金属复合氧化物。 在所公开的阴极活性材料中,第一含锂金属复合氧化物的整个表面涂覆有具有高电阻值和低电位对锂电势的第二含锂金属复合氧化物。 因此,在二次电池内部短路的情况下,可以将大量的锂离子和电子从阳极向阴极的移动速度减慢,从而能够防止由于临时过热而产生的发热, 当前。 此外,可以增加阴极活性物质分解和产生气体的温度,并且通过抑制正极活性物质和电解质的副反应来提高热稳定性。
    • 5. 发明申请
    • CATHODE ACTIVE MATERIAL AND SECONDARY BATTERY COMPRISING THE SAME
    • 阴极活性材料和包含该活性材料的二次电池
    • US20100028776A1
    • 2010-02-04
    • US12523392
    • 2008-01-18
    • Pil-Kyu ParkYoung-Sun ParkJae-Won Lee
    • Pil-Kyu ParkYoung-Sun ParkJae-Won Lee
    • H01M4/58H01M4/50H01M4/00
    • H01M4/485H01M4/02H01M4/366H01M4/505H01M4/525H01M4/5825H01M10/052H01M10/0525H01M2004/021
    • Disclosed are a cathode active material and a secondary battery including the same. Herein, the cathode active material includes (a) a first lithium-containing metal composite oxide and (b) a second lithium-containing metal composite oxide coated on an entire particle surface of the first lithium-containing metal composite oxide, the second lithium-containing metal composite oxide having a higher resistance and a lower potential vs. lithium potential (Li/Li″ 1) than the first lithium-containing metal composite oxide. In the disclosed cathode active material, an entire surface of a first lithium-containing metal composite oxide is coated with a second lithium-containing metal composite oxide having a high resistance value and a low potential vs. lithium potential. Therefore, during an internal short of a secondary battery, it is possible to slow down the moving rate of a large amount of lithium ions and electrons from an anode to a cathode, and thus to prevent heat generation caused by the occurrence of temporary over-current. Also, it is possible to increase the temperature where a cathode active material is decomposed and gas is generated, and to improve thermal stability by inhibiting side reactions of the cathode active material and electrolyte.
    • 公开了一种正极活性物质和包含该正极活性物质的二次电池。 这里,正极活性物质包含(a)第一含锂金属复合氧化物和(b)涂覆在第一含锂金属复合氧化物的整个颗粒表面上的第二含锂金属复合氧化物, 含有比第一含锂金属复合氧化物更高的电阻和更低的电位对锂电位(Li / Li“1)的金属复合氧化物。 在所公开的阴极活性材料中,第一含锂金属复合氧化物的整个表面涂覆有具有高电阻值和低电位对锂电势的第二含锂金属复合氧化物。 因此,在二次电池内部短路的情况下,可以将大量的锂离子和电子从阳极向阴极的移动速度减慢,从而能够防止由于临时过热而产生的发热, 当前。 此外,可以增加阴极活性物质分解和产生气体的温度,并且通过抑制正极活性物质和电解质的副反应来提高热稳定性。
    • 6. 发明申请
    • ELECTROCHEMICAL DEVICE ENSURING A GOOD SAFETY
    • 电化学设备保证良好的安全
    • US20100021801A1
    • 2010-01-28
    • US12446627
    • 2007-10-22
    • Young-Sun ParkMyoung-Hun LeePil-Kyu ParkEun-Ju Kang
    • Young-Sun ParkMyoung-Hun LeePil-Kyu ParkEun-Ju Kang
    • H01M10/02H01M4/02H01M2/16H01M2/12
    • H01M10/0431H01M2/027H01M2/0275H01M2/0413H01M10/02
    • Disclosed is the structure of a center pin assembly inserted into the winding center of a winding-type electrode assembly of an electrochemical device, which has a case containing the winding-type electrode assembly. The center pin assembly can secure the safety of an electrochemical device when physical impact (e.g. squeezing, shock) is applied from the outside, when the internal temperature rises, and/or when the device is overcharged. The center pin assembly includes a center pin manufactured by winding a planar substrate into a tubular shape, the planar substrate having at least two protrusions formed in an embossing type or at least two discontinuous scores formed in a predetermined shape; and a container placed in a space inside the center pin, the container containing a substance capable of improving the safety of the device.
    • 公开了插入到电化学装置的绕线式电极组件的绕组中心的中心销组件的结构,其具有包含绕组型电极组件的壳体。 当内部温度升高时和/或当装置过度充电时,当从外部施加物理冲击(例如挤压,冲击)时,中心销组件可以确保电化学装置的安全性。 中心销组件包括通过将平面基板卷绕成管状而制造的中心销,所述平面基板具有至少两个以压花形式形成的突起或形成为预定形状的至少两个不连续分数; 以及放置在中心销的空间内的容器,该容器含有能够提高装置安全性的物质。
    • 10. 发明申请
    • SEPARATOR HAVING POROUS COATING LAYER AND ELECTROCHEMICAL DEVICE CONTAINING THE SAME
    • 具有多孔涂层的分离器和包含其的电化学装置
    • US20120088144A1
    • 2012-04-12
    • US13329966
    • 2011-12-19
    • Sang-Young LEEPil-Kyu PARKJong-Hun KIM
    • Sang-Young LEEPil-Kyu PARKJong-Hun KIM
    • H01M2/16
    • H01M10/052H01M2/1646H01M2/1653H01M2/166H01M2/1673H01M4/386H01M4/387H01M4/485H01M4/505H01M4/525H01M4/5825H01M4/587H01M10/0525
    • A separator includes a porous substrate having a plurality of pores, and a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of a plurality of filler particles and a binder polymer. The filler particles include electrode active material particles that are electrochemically oxidized and reduced. The binder polymer includes a copolymer having (a) a first monomer unit with a contact angle to water of 0 to 49° and (b) a second monomer unit with a contact angle to water of 50 to 130°. This separator is useful for an electrochemical device, particularly a lithium secondary battery. This separator ensures improved thermal stability and increased capacity of the electrochemical device. Also, inorganic particles in the porous coating layer formed on the porous substrate are not disintercalated due to excellent peeling resistance of the porous coating layer while the electrochemical is assembled.
    • 分离器包括具有多个孔的多孔基材和形成在多孔基材的至少一个表面上并由多个填料颗粒和粘合剂聚合物的混合物制成的多孔涂层。 填料颗粒包括电化学氧化还原的电极活性材料颗粒。 粘合剂聚合物包括具有(a)与水接触角为0〜49°的第一单体单元和(b)与水接触角为50〜130°的第二单体单元的共聚物。 该分离器对于电化学装置,特别是锂二次电池是有用的。 该分离器确保了电化学装置的热稳定性和增加的容量的改善。 此外,由于在电化学组装时由于多孔涂层的优异的耐剥离性而在多孔基材上形成的多孔涂层中的无机颗粒不会脱嵌。