公开(公告)号：US20180323471A1

公开(公告)日：2018-11-08

申请号：US16032787

申请日：2018-07-11

Applicant: LG Chem, Ltd.

Inventor： Kyoung-Ho Ahn ,  Chul-Haeng Lee ,  Doo-Kyung Yang ,  Jong-Ho Jeon ,  Yoo-Seok Kim ,  Min-Jung Kim ,  Jung-Hoon Lee ,  Yi-Jin Jung

IPC: H01M10/0567 ,  H01M4/485 ,  H01M4/131 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/058 ,  H01M4/505 ,  H01M4/02

CPC classification number: H01M10/0567 ,  H01M4/131 ,  H01M4/485 ,  H01M4/505 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/058 ,  H01M2004/027 ,  H01M2220/20 ,  H01M2220/30 ,  H01M2300/0028 ,  H01M2300/0085 ,  Y02E60/122 ,  Y02T10/7011

Abstract: Disclosed is a secondary battery including an electrode assembly, which includes a cathode, an anode and a separator interposed therebetween, and an electrolyte, wherein the anode includes lithium titanium oxide (LTO) as an anode active material and the electrolyte contains a phosphate-based compound as an additive.

公开(公告)号：US09711821B2

公开(公告)日：2017-07-18

申请号：US14657361

申请日：2015-03-13

Applicant: LG Chem, Ltd.

Inventor： Chul-Haeng Lee ,  Doo Kyung Yang

IPC: H01M10/04 ,  H01M2/16 ,  H01M10/052 ,  H01M10/058 ,  H01M2/14 ,  H01M2/36 ,  H01M10/0566 ,  H01M2/34

CPC classification number: H01M10/049 ,  H01M2/145 ,  H01M2/1606 ,  H01M2/162 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/1673 ,  H01M2/1686 ,  H01M2/348 ,  H01M2/36 ,  H01M10/052 ,  H01M10/0566 ,  H01M10/058 ,  Y02T10/7011 ,  Y10T29/49108

Abstract: The present invention provides a lithium secondary battery and the preparation thereof, more specifically a lithium secondary battery comprising an electrode assembly having a cathode, an anode, and a separator interposed between the cathode and the anode; and a non-aqueous electrolyte solution impregnated in the electrode assembly, wherein the separator further comprises a layer having a plurality of destroyed capsules dispersed therein, the layer being formed on at least one surface of the separator coming into contact with the cathode and the anode, and the destroyed capsules has a film formed from a binder polymer and inorganic particles dispersed therebetween. The lithium secondary battery of the present invention can be prepared without the separate introducing process of a non-aqueous electrolyte solution, and has a separator exhibiting improved mechanical property and safety.

公开(公告)号：US09590272B2

公开(公告)日：2017-03-07

申请号：US14277146

申请日：2014-05-14

Applicant: LG Chem, Ltd.

Inventor： Yu-Ha An ,  Doo Kyung Yang ,  Chul-Haeng Lee ,  Young-Min Lim ,  Jong-Ho Jeon

IPC: H01M10/0567 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0587 ,  H01M10/0568

CPC classification number: H01M10/0567 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0587 ,  H01M2300/0028 ,  H01M2300/004 ,  Y02E60/122 ,  Y02T10/7011

Abstract: The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery, comprising a sulfolane-based additive; and a lithium secondary battery using the same. The non-aqueous electrolyte solution for a lithium secondary battery according to the present invention comprises an ionizable lithium salt; an organic solvent; and a sulfolane compound of formula (I), the sulfolane compound being present in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the total weight of the lithium salt and the organic solvent. The non-aqueous electrolyte solution for a lithium secondary battery according to the present invention can exhibit superior storage characteristic and life cycle at a high temperature, with maintaining good output characteristic at a low temperature.

Abstract translation: 本发明涉及一种锂二次电池用非水电解液，其包含环丁砜系添加剂， 和使用该二次电池的锂二次电池。 本发明的锂二次电池用非水电解液含有电离锂盐， 有机溶剂; 和式（I）的环丁砜化合物，相对于锂盐和有机溶剂的总重量为100重量份，环丁砜化合物的存在量为0.1〜5重量份。 本发明的锂二次电池用非水电解液可以在高温下表现出优异的储存特性和使用寿命，同时在低温下保持良好的输出特性。