公开(公告)号：US11264618B2

公开(公告)日：2022-03-01

申请号：US16568947

申请日：2019-09-12

Applicant: LG Chem, Ltd.

Inventor： Yong-Hee Lee ,  Dong-Hyeon Kang ,  In-Sung Uhm ,  Sung-Joong Kang ,  Min-Chul Jang ,  Byoung-Kuk Son ,  Dong-Chan Lee

IPC: H01M4/74 ,  H01M4/75 ,  H01M4/78 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/0587

Abstract: A lithium metal electrode includes a current collector having a surface irregularity structure, a lithium metal layer disposed outside of the surface irregularity structure except the uppermost surface of the surface irregularity structure in the current collector, an electron-insulating protective layer disposed outside of the lithium metal layer, and a lithium ion-isolating layer disposed (1) on the uppermost surface of the surface irregularity structure of the current collector, or (2) on the uppermost surface of the surface irregularity structure of the current collector, on the uppermost surface of the lithium metal layer, and on the uppermost surface of the electron-insulating protective layer, wherein the electron-insulating protective layer includes a non-porous layer transporting lithium ions and having no pores, and a polymer porous layer disposed outside thereof. A lithium secondary battery and flexible secondary battery including the lithium metal electrode are also provided.

公开(公告)号：US10770758B2

公开(公告)日：2020-09-08

申请号：US15766157

申请日：2016-10-21

Applicant: LG Chem, Ltd.

Inventor： In-Sung Uhm ,  Je-Young Kim ,  Jong-Hwa Choi ,  Suk-In Noh ,  Dong-Chan Lee

IPC: H01M10/0587 ,  H01M2/14 ,  H01M2/02 ,  H01M4/74 ,  H01M10/058 ,  H01M4/13 ,  H01M2/16 ,  H01M2/18 ,  H01M4/583 ,  H01M4/66 ,  H01M4/75 ,  H01M10/0525 ,  H01M4/02

Abstract: Disclosed is a cable-type secondary battery, including: a winding core having guide portions formed by intaglio or relief in a spiral shape on the surface thereof; a sheet-type first inner electrode formed on the outside of the winding core surface between the guide portions by spiral winding; a sheet-type first separation layer formed on the outside of the first inner electrode by spiral winding; a sheet-type second inner electrode formed on the outside of the first separation layer by spiral winding; a second separation layer formed on the outside of the second inner electrode by spiral winding; and an outer electrode formed on the outside of the second separation layer by spiral winding.

公开(公告)号：US20190058223A1

公开(公告)日：2019-02-21

申请号：US16079797

申请日：2017-12-14

Applicant: LG Chem, Ltd.

Inventor： In-Sung Uhm ,  Sung-Joong Kang ,  Jae-Hyun Lee

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/75 ,  H01M4/78 ,  H01M4/66

Abstract: The present disclosure relates to cable type secondary battery, including: a cable-type core portion; a positive electrode wire wound helically to surround the outer surface of the cable-type core portion with a predetermined spacing, and including a first porous coating layer formed on the outer surface thereof; and a negative electrode wire wound helically to surround the outer surface of the cable-type core portion alternately with the wound positive electrode wire to correspond to the predetermined interval, and including a second porous coating layer formed on the outer surface thereof.

公开(公告)号：US20180287212A1

公开(公告)日：2018-10-04

申请号：US15765932

申请日：2017-01-09

Applicant: LG Chem, Ltd.

Inventor： In-Sung Uhm ,  Yo-Han Kwon ,  Je-Young Kim ,  Suk-In Noh ,  Dong-Chan Lee

IPC: H01M10/0587 ,  H01M10/04 ,  H01M2/18 ,  B65H55/00 ,  B65H54/44 ,  B21C47/02

Abstract: Disclosed is a method for manufacturing a cable-type secondary battery, which includes successively supplying a first electrode member, a separator ribbon and a second electrode member around a rod-shaped winding core, wherein a width of the first electrode member and a width of the second electrode member are respectively smaller than a winding circumference, and a width of the separator ribbon is greater than the winding circumference.

公开(公告)号：US20210234218A1

公开(公告)日：2021-07-29

申请号：US17051974

申请日：2019-10-18

Applicant: LG Chem, Ltd.

Inventor： Yo-Han Kwon ,  Joonwon Lim ,  In-Sung Uhm ,  Jae-Hyun Lee

IPC: H01M50/126 ,  H01M50/105 ,  H01M50/136 ,  H01M50/184 ,  H01M50/117

Abstract: Provided are a film for covering an entire outer surface of a secondary battery electrode assembly and a method for manufacturing the same, wherein the film comprises a mechanical support layer, a reduced graphene oxide layer disposed on an outer surface of the mechanical support layer, and a sealant layer disposed on an outer surface of the reduced graphene oxide layer, wherein reduced graphene oxide sheets of the reduced graphene oxide layer form electrostatic interaction between adjacent ones of the reduced graphene oxide sheets.

公开(公告)号：US10923772B2

公开(公告)日：2021-02-16

申请号：US15766997

申请日：2017-02-06

Applicant: LG Chem, Ltd.

Inventor： Yo-Han Kwon ,  In-Sung Uhm ,  Je-Young Kim ,  Young-Ji Yuk

IPC: H01M10/0587 ,  H01M4/13 ,  H01M4/75 ,  H01M2/02 ,  H01M10/058 ,  H01M4/62 ,  H01M10/056 ,  H01M2/34 ,  H01M10/0565

Abstract: The present disclosure provides a cable-type secondary battery which includes: at least one inner electrode; a separation layer formed to surround the outer surface of the inner electrode and configured to prevent a short of the electrodes; a sheet-type outer electrode surrounding the separation layer or the inner electrode and formed by spiral winding; and a polymer electrolyte coating layer formed to surround the sheet-type outer electrode, wherein the sheet-type outer electrode is formed by spiral winding to avoid an overlap.

公开(公告)号：US20200058928A1

公开(公告)日：2020-02-20

申请号：US16344473

申请日：2018-05-18

Applicant: LG Chem, Ltd.

Inventor： Ju-Ryoun Kim ,  Min-Kyu You ,  In-Sung Uhm

IPC: H01M4/139 ,  H01M10/052 ,  H01M4/04 ,  H01M4/80 ,  H01M4/74

Abstract: Provided is a method for manufacturing a flexible electrode, including the steps of: (i) coating a porous current collector having a plurality of pores with an active material slurry having a solid content of 30-50% and drying the active material slurry to form an active material coating layer; (ii) coating an active material slurry having a solid content of 30-50% on the active material coating layer formed from the preceding step and drying the active material slurry to form an additional active material coating layer; and (iii) repeating step (ii) n times (1≤n≤5) to form multiple active material coating layers, thereby forming an electrode active material layer in the pores and on the surface of the porous current collector in a non-press mode. A flexible electrode obtained from the method and a lithium secondary battery including the flexible electrode are also provided.

公开(公告)号：US10476098B2

公开(公告)日：2019-11-12

申请号：US15518634

申请日：2015-11-02

Applicant: LG Chem, Ltd.

Inventor： Yo-Han Kwon ,  In-Sung Uhm ,  Je-Young Kim

IPC: H01M10/04 ,  H01M2/18 ,  H01M4/75 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2/02 ,  H01M4/66 ,  H01M4/78 ,  H01M10/052 ,  H01M10/0565 ,  H01M4/02

Abstract: Provided is a multilayer cable-type secondary battery including: a first electrode assembly including one or more first inner electrodes, a first separation layer surrounding outer surfaces of the first inner electrodes to prevent short circuit of electrodes and a sheet-type first outer electrode spirally wound to surround the first separation layer; a third separation layer surrounding the first electrode assembly to prevent short circuit of electrodes; and a second electrode assembly including one or more second inner electrodes surrounding an outer surface of the third separation layer, a second separation layer surrounding outer surfaces of the second inner electrodes to prevent short circuit of electrodes and a sheet-type second outer electrode spirally wound to surround the second separation layer.

公开(公告)号：US20180254462A1

公开(公告)日：2018-09-06

申请号：US15756832

申请日：2016-09-05

Applicant: LG Chem, Ltd.

Inventor： Yo-Han Kwon ,  Suk-In Noh ,  In-Sung Uhm ,  Je-Young Kim

IPC: H01M2/16 ,  H01M10/056 ,  H01M10/058 ,  H01M4/13 ,  H01M4/62 ,  H01M4/74

CPC classification number: H01M2/1673 ,  H01M4/13 ,  H01M4/62 ,  H01M4/667 ,  H01M4/74 ,  H01M4/78 ,  H01M10/0422 ,  H01M10/0436 ,  H01M10/052 ,  H01M10/056 ,  H01M10/058

Abstract: The present disclosure provides a cable-type secondary battery which includes: a cable-type electrode assembly comprising an inner electrode and a separation layer surrounding the outer surface of the inner electrode to prevent a short-circuit between electrodes; and a sheet-form outer electrode surrounding the outer surface of the cable-type electrode assembly, and satisfies the mathematical formula of C≥W (wherein C is the circumference of the section perpendicular to the longitudinal direction of the cable-type electrode assembly, and W is the width of the sheet-form outer electrode).

公开(公告)号：US20170237109A1

公开(公告)日：2017-08-17

申请号：US15518634

申请日：2015-11-02

Applicant: LG Chem, Ltd.

Inventor： Yo-Han Kwon ,  In-Sung Uhm ,  Je-Young Kim

IPC: H01M10/04 ,  H01M2/18 ,  H01M10/0525 ,  H01M10/0587

CPC classification number: H01M10/0422 ,  H01M2/024 ,  H01M2/028 ,  H01M2/18 ,  H01M4/66 ,  H01M4/75 ,  H01M4/78 ,  H01M10/0413 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/0587 ,  H01M2004/025 ,  H01M2220/20 ,  H01M2300/0085 ,  Y02E60/122

Abstract: Provided is a multilayer cable-type secondary battery including: a first electrode assembly including one or more first inner electrodes, a first separation layer surrounding outer surfaces of the first inner electrodes to prevent short circuit of electrodes and a sheet-type first outer electrode spirally wound to surround the first separation layer; a third separation layer surrounding the first electrode assembly to prevent short circuit of electrodes; and a second electrode assembly including one or more second inner electrodes surrounding an outer surface of the third separation layer, a second separation layer surrounding outer surfaces of the second inner electrodes to prevent short circuit of electrodes and a sheet-type second outer electrode spirally wound to surround the second separation layer.