公开(公告)号：US11196043B2

公开(公告)日：2021-12-07

申请号：US16766138

申请日：2018-11-22

Applicant: LG CHEM, LTD.

Inventor： Se Mi Park ,  Je Young Kim ,  Yong Ju Lee ,  Rae Hwan Jo ,  Su Min Lee ,  Jung Hyun Choi

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

Abstract: The present invention relates to a silicon-based particle-polymer composite, which includes silicon-based particles; and a polymer coating layer formed on the silicon-based particles, in which the polymer coating layer includes metal-substituted poly(acrylic acid) in which hydrogen atoms in carboxyl groups of the poly(acrylic acid) chain are substituted with one or more selected from the group consisting of K, Na and Li.

公开(公告)号：US10693140B2

公开(公告)日：2020-06-23

申请号：US16085457

申请日：2017-09-12

Applicant: LG CHEM, LTD.

Inventor： Lilin Piao ,  Eun Kyung Kim ,  Sun Young Shin ,  Su Min Lee ,  Su Yeon Lee ,  Chang Ju Lee

IPC: H01M4/583 ,  H01M4/133 ,  H01M4/587 ,  H01M4/36 ,  H01M2/10 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

Abstract: The present invention relates to a negative electrode and a secondary battery including the same, and particularly, to a negative electrode which includes a negative electrode active material layer including first active material particles each in the form of a secondary particle in which a plurality of primary particles are agglomerated; and second active material particles, wherein the second active material particles have an average particle size (D50) equal to or less than an average particle size (D50) of the primary particles, the first active material particle is artificial graphite, and the second active material particle is a graphite-based particle, and a secondary battery, a battery module, and a battery pack including the same.

公开(公告)号：US10676595B2

公开(公告)日：2020-06-09

申请号：US16274652

申请日：2019-02-13

Applicant: LG CHEM, LTD.

Inventor： Yeon Sik Choi ,  Su Min Lee ,  Chang Hun Yun ,  Gi Dae Choi

IPC: C08K7/06 ,  C08K5/09 ,  C08K7/24 ,  B29B9/16 ,  C08K5/05 ,  C08K5/10 ,  C08K5/20 ,  C08K5/22 ,  C08K3/04 ,  C08J7/06 ,  C08L77/02 ,  C08L77/06

Abstract: Disclosed are methods for combining a thermoplastic polymer with a carbon nanomaterial. More particularly, A method of preparing a thermoplastic polymer combined with a carbon nanomaterial includes combining the carbon nanomaterial with a pyrene derivative by stirring 1 to 40 wt % of a carbon nanomaterial, 1 to 40 wt % of a polycyclic aromatic hydrocarbon derivative, and 20 to 98 wt % of a solvent with a mechanical mixer. According to the present invention, the resulting materials exhibit excellent tensile strength, tensile modulus, electromagnetic shielding effects and anti-static effects, and the like.

公开(公告)号：US09960427B2

公开(公告)日：2018-05-01

申请号：US14320745

申请日：2014-07-01

Applicant: LG Chem, Ltd.

Inventor： Sun Young Shin ,  Sang Wook Woo ,  Eun Kyung Kim ,  Je Young Kim ,  Hyun Wook Kim ,  Su Min Lee

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/133 ,  H01M4/131 ,  H01M4/485 ,  H01M4/587 ,  H01M10/052

CPC classification number: H01M4/625 ,  H01M4/0402 ,  H01M4/131 ,  H01M4/133 ,  H01M4/485 ,  H01M4/587 ,  H01M10/052 ,  H01M2220/30

Abstract: The present invention relates to a conductive material for a secondary battery, including a pitch coated graphene sheet, an anode for a secondary battery including the same, and a lithium secondary battery including the electrode.

公开(公告)号：US20170207497A1

公开(公告)日：2017-07-20

申请号：US15405359

申请日：2017-01-13

Applicant: LG Chem, Ltd.

Inventor： Oh Byong Chae ,  Su Min Lee ,  Eun Kyung Kim ,  Sun Young Shin

IPC: H01M10/44 ,  H02J7/00 ,  G01R31/36 ,  H01M10/0525

Abstract: A charging and discharging method for a lithium secondary battery is provided, wherein, while charging or discharging the lithium secondary battery using a constant current, the charge current or allowable discharge current is modified by measuring the internal resistance of the lithium secondary battery. In the charging and discharging method for a lithium secondary battery according to the present disclosure, the charging time and charge capacity, or the discharge current amount and discharge capacity, may be appropriately harmonized, and thus the method may be usefully used as a charging method and a discharging method for a lithium secondary battery.

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：US20160046794A1

公开(公告)日：2016-02-18

申请号：US14419423

申请日：2014-08-28

Applicant: LG CHEM, LTD.

Inventor： Yeon Sik Choi ,  Su Min Lee ,  Chang Hun Yun ,  Gi Dae Choi

IPC: C08K7/06 ,  C08J7/06

CPC classification number: C08K7/06 ,  B29B9/16 ,  B29B2009/163 ,  C08J7/06 ,  C08J2377/00 ,  C08K3/041 ,  C08K3/042 ,  C08K3/046 ,  C08K5/05 ,  C08K5/09 ,  C08K5/10 ,  C08K5/20 ,  C08K5/22 ,  C08L77/02 ,  C08L77/06

Abstract: Disclosed are a thermoplastic polymer combined with a carbon nanomaterial and a method of preparing the same. More particularly, a thermoplastic polymer combined with carbon nanomaterial, comprising 0.1 to 15 wt % of a carbon nanomaterial, 0.025 to 30 wt % of a polycyclic aromatic hydrocarbon derivative, and 55 to 99.875 wt % of a thermoplastic polymer, wherein the carbon nanomaterial and the polycyclic aromatic hydrocarbon derivative combine through π-π interaction, and the polycyclic aromatic hydrocarbon derivative covalently combines with the thermoplastic polymer, is disclosed. The thermoplastic polymer combined with the carbon nanomaterial and the method of preparing the same, according to the present invention, exhibit excellent tensile strength, tensile modulus, electromagnetic shielding effects and anti-static effects, and the like.

Abstract translation: 公开了与碳纳米材料组合的热塑性聚合物及其制备方法。 更具体地说，与碳纳米材料组合的热塑性聚合物，其包含0.1至15重量％的碳纳米材料，0.025至30重量％的多环芳烃衍生物和55至99.875重量％的热塑性聚合物，其中所述碳纳米材料和 多环芳烃衍生物通过＆amp; 公开了与热塑性聚合物共价结合的多环芳烃衍生物。 根据本发明，与碳纳米材料结合的热塑性聚合物及其制备方法表现出优异的拉伸强度，拉伸模量，电磁屏蔽效果和抗静电效果等。