公开(公告)号：US20190356021A1

公开(公告)日：2019-11-21

申请号：US16462405

申请日：2018-03-16

Applicant: LG Chem, Ltd.

Inventor： Young Min Lim ,  Chul Haeng Lee ,  Kyung Mi Lee

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  C07F5/02

Abstract: An electrolyte for a lithium secondary battery of the present invention may improve high-rate charge and discharge characteristics and high-temperature storage and life characteristics of a lithium secondary battery and may achieve an effect of increasing reversible capacity by simultaneously including lithium bis(fluorosulfonyl)imide (LiFSI) and a second lithium salt, as a lithium salt, while including a second additive as well as a novel borate-based lithium compound, as an additive.

公开(公告)号：US20190198925A1

公开(公告)日：2019-06-27

申请号：US16307751

申请日：2018-01-12

Applicant: LG Chem, Ltd.

Inventor： Jung Hoon Lee ,  Kyoung Ho Ahn ,  Chul Haeng Lee ,  Jeong Woo Oh

IPC: H01M10/0567 ,  H01M10/0525 ,  C08G65/48 ,  C08K3/32 ,  C08J3/09 ,  C07D251/30

Abstract: The present invention relates to a non-aqueous electrolyte solution including a non-aqueous organic solvent, a lithium salt, and an oligomer represented by Formula 1 described in the present specification, and a lithium secondary battery including the same. Since the non-aqueous electrolyte solution according to an embodiment of the present invention may reduce gas, such as CO or CO2, generated in the secondary battery during high-temperature storage, it may further improve high-temperature stability of the lithium secondary battery.

公开(公告)号：US20190148773A1

公开(公告)日：2019-05-16

申请号：US16308724

申请日：2018-01-18

Applicant: LG Chem, Ltd.

Inventor： Ha Eun Kim ,  Young Min Lim ,  Min Jung Kim ,  Chul Haeng Lee

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M10/42

Abstract: The present invention relates to a non-aqueous electrolyte solution which includes an ionizable lithium salt, an organic solvent, and a mixed additive, wherein the organic solvent comprises at least one cyclic carbonate-based organic solvent selected from the group consisting of ethylene carbonate, 1,2-butylene carbonate, 2,3-butylene carbonate, 1,2-pentylene carbonate, 2,3-pentylene carbonate, vinylene carbonate, and fluoroethylene carbonate, and at least one linear carbonate-based organic solvent selected from the group consisting of dimethyl carbonate, diethyl carbonate, dipropyl carbonate, ethylmethyl carbonate, methylpropyl carbonate, and ethylpropyl carbonate, the mixed additive includes vinylene carbonate, 1,3-propylene sulfate, and 1,3-propane sultone in a weight ratio of 1:1:1 to 1:0.5:0.2, and a total amount of the mixed additive is in a range of 1 to 4.5 wt % based on a total weight of the non-aqueous electrolyte solution for a lithium secondary battery, and a lithium secondary battery including the same.

公开(公告)号：US10276893B2

公开(公告)日：2019-04-30

申请号：US15516146

申请日：2015-10-01

Applicant: LG Chem, Ltd.

Inventor： Sol Ji Park ,  Kyoung Ho Ahn ,  Jeong Woo Oh ,  Chul Haeng Lee ,  Yi Jin Jung

IPC: C08G73/02 ,  H01M4/525 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0565

Abstract: The present invention relates to a composition for a gel polymer electrolyte comprising a liquid electrolyte solvent, a lithium salt, a polymerization initiator, and a mixed compound of a first compound and a second compound, and a lithium secondary battery comprising a positive electrode, a negative electrode, a separator, and a gel polymer electrolyte, wherein the gel polymer electrolyte is formed by polymerizing the composition for a gel polymer electrolyte. By comprising a mixed compound of a first compound and a second compound in which the first compound is an amine-based compound comprising polyethylene glycol as a functional group and the second compound is an epoxy-based compound, a composition for a gel polymer electrolyte of the present invention exhibits, when used in a lithium secondary battery, enhanced battery lifespan, excellent high temperature storability, and enhanced battery capacity property by readily inducing a hopping phenomenon.

公开(公告)号：US20190058217A1

公开(公告)日：2019-02-21

申请号：US16080094

申请日：2017-09-01

Applicant: LG Chem, Ltd.

Inventor： Kyoung Ho Ahn ,  Sol Ji Park ,  Jung Hoon Lee ,  Chul Haeng Lee

IPC: H01M10/0565 ,  C08L71/02 ,  H01M2/16 ,  H01M10/0525

Abstract: The present invention relates to a polymer electrolyte, which includes a lithium salt and a copolymer including a fluorine-substituted or unsubstituted polyalkylene ether repeating unit, and a lithium secondary battery including the same.

公开(公告)号：US09947966B2

公开(公告)日：2018-04-17

申请号：US15110187

申请日：2015-09-25

Applicant: LG Chem, Ltd.

Inventor： Young Min Lim ,  Shul Kee Kim ,  Chul Haeng Lee ,  Gwang Yeon Kim

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2220/30 ,  H01M2300/0037

Abstract: The present invention relates to a lithium secondary battery comprising a non-aqueous electrolyte solution comprising lithium bis(fluorosulfonyl)imide (LiFSI) and a phosphazene compound as additives, a positive electrode comprising a lithium-nickel-manganese-cobalt-based oxide as a positive electrode active material, a negative electrode and a separator. According to a non-aqueous electrolyte solution for a lithium secondary battery of the present invention, a rigid SEI layer may be formed at a negative electrode during the initial charging of the lithium secondary battery comprising the same, the output properties of the lithium secondary battery may be improved, and the output properties after storing at high temperature and capacity properties may be increased.

公开(公告)号：US09666901B2

公开(公告)日：2017-05-30

申请号：US14014813

申请日：2013-08-30

Applicant: LG Chem, Ltd.

Inventor： Kyoung Ho Ahn ,  Chul Haeng Lee ,  Doo Kyung Yang ,  Young Min Lim ,  Yu Ha An ,  Min Jung Kim

IPC: H01M10/056 ,  H01M10/0567 ,  H01M10/052

CPC classification number: H01M10/056 ,  H01M10/052 ,  H01M10/0567 ,  H01M2300/0025 ,  Y02T10/7011

Abstract: An additive for an electrolyte solution includes a lithium salt having an oxalato complex as an anion and a compound represented by following Chemical Formula 1. Wherein, a represents C or Si, b represents H or F, and n represents an integer of 1 to 5. A non-aqueous electrolyte solution including the additive and a lithium secondary battery including the electrolyte solution also are provided.

公开(公告)号：US20160329601A1

公开(公告)日：2016-11-10

申请号：US15108981

申请日：2015-09-25

Applicant: LG CHEM, LTD.

Inventor： Shul Kee Kim ,  Chul Haeng Lee ,  Young Min Lim ,  Gwang Yeon Kim

IPC: H01M10/0567 ,  H01M4/525 ,  H01M4/52 ,  H01M4/136 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/505 ,  H01M4/50

CPC classification number: H01M10/0567 ,  H01M4/136 ,  H01M4/502 ,  H01M4/505 ,  H01M4/523 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028 ,  H01M2220/30 ,  H01M2300/0034

Abstract: The present invention relates to a lithium secondary battery comprising a non-aqueous liquid electrolyte comprising lithium bis(fluorosulfonyl)imide (LiFSI) and a fluorinated ether compound as additives, a positive electrode comprising a lithium-nickel-manganese-cobalt-based oxide as a positive electrode active material, a negative electrode and a separator. According to a non-aqueous liquid electrolyte for a lithium secondary battery of the present invention, a rigid SEI layer may be formed at a negative electrode during the initial charging of the lithium secondary battery comprising the same, the output properties of the lithium secondary battery may be improved, and the output properties after storing at high temperature and capacity properties may be increased.

Abstract translation: 锂二次电池本发明涉及一种锂二次电池，其包含包含双（氟磺酰基）酰亚胺锂（LiFSI）和氟化醚化合物作为添加剂的非水电解液，包含锂镍锰钴基氧化物的正极 正极活性物质，负极和隔膜。 根据本发明的锂二次电池用非水电解液，在包含锂二次电池的锂二次电池的初始充电期间，可以在负极上形成刚性SEI层，锂二次电池的输出特性 可以提高储存在高温和容量特性的输出性能。

公开(公告)号：US09472830B2

公开(公告)日：2016-10-18

申请号：US14560139

申请日：2014-12-04

Applicant: LG Chem, Ltd.

Inventor： Kyoung Ho Ahn ,  Chul Haeng Lee ,  Jung Hoon Lee ,  Doo Kyung Yang ,  Young Min Lim

IPC: H01M10/0567 ,  H01M4/131 ,  H01M4/485 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  H01M4/131 ,  H01M4/485 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2220/20 ,  Y02E60/122 ,  Y02T10/7011

Abstract: Disclosed is a lithium secondary battery having improved lifespan characteristics. More particularly, a lithium secondary battery comprising a cathode, an anode, a separator interposed between the cathode and anode, and an electrolyte, wherein the anode comprises lithium titanium oxide (LTO) as an anode active material, the electrolyte comprises a lithium salt; a non-aqueous-based solvent; and (a) a phosphate compound which can prevent gas generation during high-temperature storage, (b) a sulfonate compound which can reduce discharge resistance by forming a low-resistance SEI layer, or a mixture of the compound (a) and the compound (b), is disclosed.

Abstract translation: 公开了具有改善寿命特性的锂二次电池。 更具体地说，包括阴极，阳极，介于阴极和阳极之间的隔膜和电解质的锂二次电池，其中阳极包含作为阳极活性材料的锂钛氧化物（LTO），电解质包含锂盐; 非水系溶剂; 和（a）可以防止在高温储存期间产生气体的磷酸盐化合物，（b）通过形成低电阻SEI层可以降低耐放电性的磺酸盐化合物或化合物（a）和化合物 （b）。

公开(公告)号：US20160028116A1

公开(公告)日：2016-01-28

申请号：US14419547

申请日：2014-09-01

Applicant: LG Chem, Ltd.

Inventor： Kyoung Ho Ahn ,  Chul Haeng Lee ,  Yoo Seok Kim ,  Doo Kyung Yang ,  Young Min Lim ,  Jung Hoon Lee

IPC: H01M10/0567 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0025 ,  H01M2300/0037

Abstract: Provided are a non-aqueous electrolyte including a non-aqueous organic solvent, a lithium salt, and a borate-based compound, and a lithium secondary battery using the same. According to the present invention, a lithium secondary battery having improved cycle characteristics and high-temperature storage stability may be prepared by including a non-aqueous electrolyte which includes at least one borate-based compound as an additive.

Abstract translation: 提供了包含非水有机溶剂，锂盐和硼酸盐基化合物的非水电解质和使用其的锂二次电池。 根据本发明，可以通过包括至少一种硼酸盐化合物作为添加剂的非水电解质来制备具有改善的循环特性和高温储存稳定性的锂二次电池。