公开(公告)号：US09318746B2

公开(公告)日：2016-04-19

申请号：US13444004

申请日：2012-04-11

申请人： Dong-Hwan Yu ,  Gun-Ho Kwak ,  In-Sung Uhm ,  Bo-Ra Shin

发明人： Dong-Hwan Yu ,  Gun-Ho Kwak ,  In-Sung Uhm ,  Bo-Ra Shin

IPC分类号： H01M4/66 ,  H01M4/02

CPC分类号： H01M4/667 ,  H01M4/661 ,  H01M4/663 ,  H01M2004/021 ,  H01M2004/028

摘要： Disclosed are a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the positive electrode includes a current collector including a carbon layer disposed on a substrate; and a positive active material layer disposed on the current collector, wherein the carbon layer has a loading level of 0.5 g/m2 to 3 g/m2. The effects of the carbon layer include improving the high power characteristics and the power density by decreasing the internal resistance of an electrode, and to improve the power density by providing uniform current to the positive electrode. The carbon layer may have a thickness of about 1 μm to about 2 μm. The carbon layer may include a carbon-based material of artificial graphite, natural graphite, carbon black, acetylene black, ketjen black, denka black, or combinations thereof.

摘要翻译： 公开了一种用于可再充电锂电池的正电极和包括其的可再充电锂电池，并且正电极包括集电器，该集电器包括设置在基板上的碳层; 以及设置在集电体上的正极活性物质层，其中碳层的负载水平为0.5g / m 3至3g / m 2。 碳层的效果包括通过降低电极的内部电阻来提高高功率特性和功率密度，并且通过向正极提供均匀的电流来提高功率密度。 碳层可以具有约1μm至约2μm的厚度。 碳层可以包括人造石墨，天然石墨，炭黑，乙炔黑，科琴黑，黑黑或其组合的碳基材料。

公开(公告)号：US20120308885A1

公开(公告)日：2012-12-06

申请号：US13444004

申请日：2012-04-11

申请人： Dong-Hwan YU ,  Gun-Ho KWAK ,  In-Sung UHM ,  Bo-Ra SHIN

发明人： Dong-Hwan YU ,  Gun-Ho KWAK ,  In-Sung UHM ,  Bo-Ra SHIN

IPC分类号： H01M4/583 ,  H01M10/02 ,  H01M4/66

CPC分类号： H01M4/667 ,  H01M4/661 ,  H01M4/663 ,  H01M2004/021 ,  H01M2004/028

摘要： Disclosed are a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the positive electrode includes a current collector including a carbon layer disposed on a substrate; and a positive active material layer disposed on the current collector, wherein the carbon layer has a loading level of 0.5 g/m2 to 3 g/m2. The effects of the carbon layer include improving the high power characteristics and the power density by decreasing the internal resistance of an electrode, and to improve the power density by providing uniform current to the positive electrode. The carbon layer may have a thickness of about 1 μm to about 2 μm. When the carbon layer has a thickness within this range, it may achieve the desired effects of a carbon layer. The carbon layer may include a carbon-based material of artificial graphite, natural graphite, carbon black, acetylene black, ketjen black, denka black, or combinations thereof.

摘要翻译： 公开了一种用于可再充电锂电池的正电极和包括其的可再充电锂电池，并且正电极包括集电器，该集电器包括设置在基板上的碳层; 以及设置在集电体上的正极活性物质层，其中碳层的负载水平为0.5g / m 3至3g / m 2。 碳层的效果包括通过降低电极的内部电阻来提高高功率特性和功率密度，并且通过向正极提供均匀的电流来提高功率密度。 碳层可以具有约1μm至约2μm的厚度。 当碳层的厚度在该范围内时，可以实现碳层所需的效果。 碳层可以包括人造石墨，天然石墨，炭黑，乙炔黑，科琴黑，黑黑或其组合的碳基材料。

公开(公告)号：US10177377B2

公开(公告)日：2019-01-08

申请号：US13398957

申请日：2012-02-17

申请人： Dong-Hwan Yu ,  Gun-Ho Kwak ,  Sung-Hoon Kim

发明人： Dong-Hwan Yu ,  Gun-Ho Kwak ,  Sung-Hoon Kim

IPC分类号： H01M4/505 ,  H01M4/525 ,  C01G51/00 ,  C01G53/00 ,  H01M4/131 ,  H01M10/0525 ,  H01M4/02

摘要： A positive active material for a rechargeable lithium battery is a secondary particle formed of an assembly of primary particles of a nickel-based compound. The positive active material has an average particle diameter ranging from 5.5 μm to 7.5 μm and a specific surface area ranging from 0.40 m2/g to 2.0 m2/g. When the positive active material has an average particle diameter ranging from 11 μm to 13 μm, the positive active material has a specific surface area ranging from 0.15 m2/g to 1.0 m2/g. A rechargeable lithium battery includes the positive active material.

公开(公告)号：US20120258366A1

公开(公告)日：2012-10-11

申请号：US13398957

申请日：2012-02-17

申请人： Dong-Hwan YU ,  Gun-Ho Kwak ,  Sung-Hoon Kim

发明人： Dong-Hwan YU ,  Gun-Ho Kwak ,  Sung-Hoon Kim

IPC分类号： H01M4/36 ,  B29B9/12 ,  B05D5/12 ,  B32B5/16

CPC分类号： H01M4/525 ,  C01G51/50 ,  C01G53/50 ,  C01P2002/52 ,  C01P2004/61 ,  C01P2004/84 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/021 ,  Y10T428/2982

摘要： A positive active material for a rechargeable lithium battery is a secondary particle formed of an assembly of primary particles of a nickel-based compound. The positive active material has an average particle diameter ranging from 5.5 μm to 7.5 μm and a specific surface area ranging from 0.40 m2/g to 2.0 m2/g. When the positive active material has an average particle diameter ranging from 11 μm to 13 μm, the positive active material has a specific surface area ranging from 0.15 m2/g to 1.0 m2/g. A rechargeable lithium battery includes the positive active material.

摘要翻译： 用于可再充电锂电池的正极活性材料是由镍基化合物的初级颗粒组合形成的二次颗粒。 正极活性物质的平均粒径为5.5μm〜7.5μm，比表面积为0.40m 2 / g〜2.0m 2 / g。 正极活性物质的平均粒径为11μm〜13μm时，正极活性物质的比表面积为0.15m 2 / g〜1.0m 2 / g。 可充电锂电池包括正极活性材料。