公开(公告)号：US20160181612A1

公开(公告)日：2016-06-23

申请号：US14767655

申请日：2014-12-19

Applicant: LG CHEM, LTD.

Inventor： Su Min Lee ,  Dong Sub Jung ,  Eun Kyung Kim ,  Sang Wook Woo ,  Sun Young Shin

IPC: H01M4/587 ,  H01M10/052 ,  H01M4/133 ,  H01M4/36

CPC classification number: H01M4/587 ,  H01G11/06 ,  H01G11/24 ,  H01G11/28 ,  H01G11/32 ,  H01G11/38 ,  H01G11/42 ,  H01G11/50 ,  H01M4/133 ,  H01M4/364 ,  H01M4/366 ,  H01M10/052 ,  H01M2004/027 ,  Y02E60/13

Abstract: The present invention relates to an anode active material including natural graphite and mosaic coke-based artificial graphite, and a lithium secondary battery including the same. According to an embodiment of the present invention, an anode active material including natural graphite and mosaic coke-based artificial graphite is used, when applied to a lithium secondary battery, intercalation and deintercalation of lithium ions is more facilitated and conductivity of an electrode is improved even if no or little conductive material is used. Furthermore, the increase in conductivity can lead to not only a further improvement in rate performance of a lithium secondary battery but also a reduction in interfacial resistance.

Abstract translation: 本发明涉及包含天然石墨和马来焦碳基人造石墨的负极活性物质和包含该负极活性物质的锂二次电池。 根据本发明的实施方案，使用包括天然石墨和马来焦碳基人造石墨的负极活性材料，当应用于锂二次电池时，更容易地插入和脱嵌锂离子，并且电极的导电性得到改善 即使不使用或少量导电材料。 此外，电导率的增加不仅可以导致锂二次电池的速率性能的进一步改善，而且可以导致界面电阻的降低。

公开(公告)号：US20140227588A1

公开(公告)日：2014-08-14

申请号：US14257094

申请日：2014-04-21

Applicant: LG Chem, Ltd.

Inventor： Hyun Wook Kim ,  Sang Wook Woo ,  Je Young Kim ,  Ki Tae Kim

IPC: H01M4/36 ,  H01M4/60 ,  H01M4/583

CPC classification number: H01M4/366 ,  H01M4/587 ,  H01M4/62 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525

Abstract: Provided are an anode including spherical natural graphite having a surface coated with an amorphous carbon layer, wherein a crystal orientation ratio is in a range of 0.06 to 0.08 at a compressed density of 1.40 g/cc to 1.85 g/cc, and a lithium secondary battery including the anode. Initial efficiency, electrode adhesion, and capacity characteristics of the lithium secondary battery may be improved by using the anode of the present invention in the lithium secondary battery.

Abstract translation: 提供一种阳极，其包括具有被覆无定形碳层的表面的球状天然石墨，其中在1.40g / cc至1.85g / cc的压缩密度下，晶体取向比为0.06至0.08的范围，以及锂二次 包括阳极的电池。 通过在锂二次电池中使用本发明的阳极，可以提高锂二次电池的初始效率，电极附着力和容量特性。