公开(公告)号：EP2662916A4

公开(公告)日：2015-04-29

申请号：EP12856250

申请日：2012-12-06

申请人： LG CHEMICAL LTD

发明人： LEE MIN HEE ,  PARK JUNG HWAN ,  KWON KI YOUNG

IPC分类号： H01M4/505 ,  C01G45/12 ,  H01M4/36 ,  H01M4/525 ,  H01M10/052

CPC分类号： H01M4/366 ,  C01G45/1228 ,  C01G45/125 ,  C01G53/42 ,  C01P2004/82 ,  H01B1/08 ,  H01M4/131 ,  H01M4/362 ,  H01M4/364 ,  H01M4/483 ,  H01M4/485 ,  H01M4/505 ,  H01M4/523 ,  H01M4/525 ,  H01M4/624 ,  H01M10/052 ,  H01M2004/028 ,  H01M2220/20 ,  Y02E60/122 ,  Y02T10/7011 ,  Y10S903/907

摘要： Provided is a composite cathode active material including layered lithium manganese oxide and lithium-containing metal oxide. Also, the present invention provides a secondary battery, a battery module, and a battery pack which have improved power characteristics by including the composite cathode active material.

公开(公告)号：EP3232498A4

公开(公告)日：2018-07-11

申请号：EP16814662

申请日：2016-06-22

申请人： LG CHEMICAL LTD

发明人： SONG CHARLES KISEOK ,  JUNG BYOUNG HYO ,  PARK SEONG EUN ,  YANG DOO KYUNG ,  KWON KI YOUNG

IPC分类号： H01M4/62 ,  C01B17/00 ,  H01M4/13 ,  H01M4/139 ,  H01M4/38 ,  H01M10/052

CPC分类号： H01M4/622 ,  C01B17/00 ,  C08K5/0025 ,  C08K5/541 ,  C08K5/544 ,  H01M4/13 ,  H01M4/139 ,  H01M4/38 ,  H01M4/621 ,  H01M4/8825 ,  H01M10/052 ,  H01M10/399 ,  H01M12/06

摘要： The present invention relates to an electrode for a lithium secondary battery, a method for preparing the same, an electrode assembly for a lithium secondary battery comprising the same, and a lithium secondary battery comprising the same, wherein the electrode comprises an electrode active material, an aqueous binder, a compound represented by Formula 1, and a compound represented by Formula 2. Formula 1 and Formula 2 are the same as set forth in the specification. The electrode for a lithium secondary battery improves the physical properties of the aqueous binder in a manner whereby a cross-linking reaction material is combined with the aqueous binder, so that the electrode can improve initial charge/discharge efficiency and the life span of a lithium secondary battery, preferably a lithium sulfur battery, and improve the area capacity of the electrode.

公开(公告)号：EP3312906A4

公开(公告)日：2018-05-02

申请号：EP17744499

申请日：2017-01-16

申请人： LG CHEMICAL LTD ,  KOREA ADVANCED INST SCI & TECH

发明人： LEE SEONG HO ,  LEE HAESHIN ,  KIM SUN JIN ,  YANG DOO KYUNG ,  KWON KI YOUNG

IPC分类号： H01M2/16 ,  H01M2/14 ,  H01M4/38 ,  H01M10/052

CPC分类号： H01M10/052 ,  H01M2/145 ,  H01M2/162 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/1686 ,  H01M4/38 ,  H01M4/382

摘要： The present invention relates to a separator for a lithium-sulfur battery having a composite coating layer including polydopamine, and a method for preparing the same, and in particular, to a lithium-sulfur battery suppressing lithium polysulfide elution by using a composite coating layer including polydopamine and a conductive material on one surface of a separator. In the lithium-sulfur battery according to the present invention, a porous structure of polydopamine adsorbs lithium polysulfide eluted from a positive electrode preventing elution and diffusion, and by providing additional electric conductivity, a reaction site of a positive electrode active material is provided, and therefore, battery capacity and life time properties are enhanced.

公开(公告)号：EP3206248A4

公开(公告)日：2018-03-21

申请号：EP15856009

申请日：2015-10-30

申请人： LG CHEMICAL LTD

发明人： KOH DONG WOOK ,  PARK EUN KYUNG ,  CHAE JONG HYUN ,  YANG DOO KYUNG ,  KWON KI YOUNG

IPC分类号： H01M10/052 ,  H01M4/04 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/0567 ,  H01M10/058

CPC分类号： H01M10/0565 ,  H01M4/0404 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/364 ,  H01M4/38 ,  H01M4/382 ,  H01M4/587 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/058 ,  H01M2220/20

摘要： The present disclosure relates to a lithium sulfur battery comprising a negative electrode and a positive electrode disposed opposite to each other, a separator positioned between the negative electrode and the positive electrode, and a gel polymer electrolyte positioned between the separator and the positive electrode, wherein the gel polymer electrolyte comprises LiNO 3 . The present disclosure relates to a lithium sulfur battery preventing degeneration caused by a shuttle effect, and the lithium sulfur battery comprises a gel polymer electrolyte configured to inhibit a transfer of a polysulfide-based material to a negative electrode so as to prevent a loss of the polysulfide formed on a positive electrode surface during charge and discharge reactions, whereby, lifespan characteristics of the lithium sulfur battery are capable of being enhanced.

公开(公告)号：EP3312139A4

公开(公告)日：2018-07-18

申请号：EP17810448

申请日：2017-01-25

申请人： LG CHEMICAL LTD

发明人： PARK JI HEE ,  SOHN KWON NAM ,  YANG DOO KYUNG ,  KWON KI YOUNG

IPC分类号： C01B21/082 ,  C01B32/182 ,  H01M4/133 ,  H01M4/587 ,  H01M10/052

CPC分类号： C01B21/082 ,  C01B32/182 ,  H01M4/133 ,  H01M4/587 ,  H01M10/052

摘要： The present invention relates to a self-assembled composite of carbon nitride and graphene oxide, and in particular, to including a self-assembled composite prepared by heat treating a mixed solution dissolving melamine, tri-thiocyanuric acid and graphene oxide (GO) in a positive electrode of a lithium-sulfur battery to suppress elution of lithium polysulfide. According to the present invention, the self-assembled composite containing a pyridinic group in large quantities and having improved conductivity adsorbs lithium polysulfide eluted from a positive electrode during charge and discharge and performs a role of preventing diffusion of the lithium polysulfide, and therefore, lithium-sulfur battery capacity and lifecycle properties can be enhanced by suppressing a shuttle reaction.