公开(公告)号：US11196038B2

公开(公告)日：2021-12-07

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

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：US20210313587A1

公开(公告)日：2021-10-07

申请号：US17285006

申请日：2019-12-03

Applicant: LG Chem, Ltd.

Inventor： Yo-Han Kwon ,  Sang-Young Lee ,  Ju-Myung Kim ,  In-Sung Uhm ,  Jae-Hyun Lee ,  Joonwon Lim

IPC: H01M4/66 ,  H01M10/0525 ,  H01M10/647 ,  H01M50/46

Abstract: A flexible electrode includes: a current collector; an electrode layer positioned at a top of the current collector; a first support layer positioned at a top of the electrode layer; and a second support layer positioned at a bottom of the current collector, wherein each of the first support layer and the second support layer is a conductive coating layer-containing porous polymer substrate including a porous polymer substrate, and a conductive coating layer positioned on a surface of the porous polymer substrate and including a conductive material and a dispersing agent, and the porous polymer substrate is a non-woven web provided with a plurality of polymer fibers and a pore structure interconnected by the plurality of polymer fibers.

公开(公告)号：US20210050600A1

公开(公告)日：2021-02-18

申请号：US16641057

申请日：2018-11-08

Applicant: LG Chem, Ltd. ,  Ulsan National Institute of Science and Technology

Inventor： In-Sung Uhm ,  Sang-Young Lee ,  Sung-Joong Kang ,  Jeong-A Kim ,  Je-Young Kim ,  Ju-Myung Kim ,  Yong-Hee Lee ,  Jae-Hyun Lee

IPC: H01M4/80 ,  H01M4/66 ,  H01M4/13 ,  H01M4/36 ,  H01G11/28 ,  H01G11/30 ,  H01G11/52 ,  H01G11/86

Abstract: Disclosed are an electrode having a three-dimensional structure, the electrode including: a porous nonwoven web including a plurality of polymer fibers that form an interconnected porous network; an active material composite positioned among the polymer fibers and including active material particles and a first conductive material; and a second conductive material positioned on an outer surface of the active material composite, wherein the interconnected porous network is filled homogeneously with the active material composite and the second conductive material to form a super lattice structure, and an electrochemical device including the electrode having a three-dimensional structure.

公开(公告)号：US10770732B2

公开(公告)日：2020-09-08

申请号：US15767024

申请日：2016-10-21

Applicant: LG Chem, Ltd.

Inventor： In-Sung Uhm ,  Je-Young Kim ,  Jong-Hwa Choi ,  Suk-In Noh ,  Young-Ji Yuk

IPC: H01M4/74 ,  H01M4/66 ,  H01M4/75 ,  H01M10/04 ,  H01M10/0587 ,  H01M10/052 ,  H01M2/18 ,  H01M4/62 ,  H01M10/0525 ,  H01M2/02

Abstract: Disclosed is a cable-type secondary battery, including: a winding core; an inner electrode support wound on the outside of the winding core in the form of a spaced spring so that the winding core may be exposed partially; a sheet-type first inner electrode formed on the outside of the exposed winding core 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：US10673047B2

公开(公告)日：2020-06-02

申请号：US15772300

申请日：2017-02-06

Applicant: LG Chem, Ltd.

Inventor： In-Sung Uhm ,  Je-Young Kim ,  Suk-In Noh ,  Young-Ji Yuk ,  Dong-Chan Lee

IPC: H01M2/18 ,  H01M4/75 ,  H01M10/058 ,  H01M2/02 ,  H01M4/139 ,  H01M2/16 ,  H01M10/0525

Abstract: The present disclosure relates to a cable type secondary battery which includes: a cable type electrode assembly including an inner electrode, a separator layer formed to surround the outer surface of the inner electrode and preventing a short-circuit between electrodes, and an outer electrode formed to surround the separator layer; a taping layer formed by spirally winding a sheet type tape so that it surrounds the outer surface of the cable type electrode assembly; and a packaging formed to surround the outer surface of the taping layer. According to the present disclosure, it is possible to prevent separation of the separator layer or the outer electrode, and thus to reinforce the bending characteristics of the cable type secondary battery.

公开(公告)号：US10361461B2

公开(公告)日：2019-07-23

申请号：US15549575

申请日：2016-02-11

Applicant: LG Chem, Ltd.

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

IPC: H01M4/00 ,  H01M10/0587 ,  H01M4/75 ,  H01M10/058 ,  H01M2/02 ,  H01M4/66 ,  H01M4/74 ,  H01M4/78 ,  H01M10/04 ,  H01M10/0525 ,  H01M4/02

Abstract: A cable type secondary battery includes an inner electrode support; and a sheet-like inner electrode—separation layer—outer electrode complex which is spirally wound around the outer side of the inner electrode support. The inner electrode—separation layer—outer electrode complex is formed such that an inner electrode, a separation layer, and an outer electrode are compressed integrally. According to one embodiment, an electrode and a separation layer are bonded integrally so that the separation layer in close contact with the electrode absorbs electrolyte so as to induce a uniform supply of the electrolyte to an outer electrode active material layer, thereby increasing the stability and performance of a cable type secondary battery. In addition, the cable type secondary battery has a sheet-like electrode, whereby the resistance of the cable type secondary battery is reduced and the performance of the battery may be improved.

公开(公告)号：US20180323418A1

公开(公告)日：2018-11-08

申请号：US15772300

申请日：2017-02-06

Applicant: LG Chem, Ltd.

Inventor： In-Sung Uhm ,  Je-Young Kim ,  Suk-In Noh ,  Young-Ji Yuk ,  Dong-Chan Lee

IPC: H01M2/18 ,  H01M10/0525 ,  H01M10/058 ,  H01M4/139 ,  H01M4/75 ,  H01M2/16

CPC classification number: H01M2/18 ,  H01M2/026 ,  H01M2/029 ,  H01M2/1673 ,  H01M4/139 ,  H01M4/75 ,  H01M10/0525 ,  H01M10/058 ,  H01M2002/0205 ,  Y02E60/122 ,  Y02T10/7011

Abstract: The present disclosure relates to a cable type secondary battery which includes: a cable type electrode assembly including an inner electrode, a separator layer formed to surround the outer surface of the inner electrode and preventing a short-circuit between electrodes, and an outer electrode formed to surround the separator layer; a taping layer formed by spirally winding a sheet type tape so that it surrounds the outer surface of the cable type electrode assembly; and a packaging formed to surround the outer surface of the taping layer. According to the present disclosure, it is possible to prevent separation of the separator layer or the outer electrode, and thus to reinforce the bending characteristics of the cable type secondary battery.

公开(公告)号：US20180309153A1

公开(公告)日：2018-10-25

申请号：US15765663

申请日：2016-09-09

Applicant: LG Chem, Ltd.

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

IPC: H01M10/04 ,  H01M10/0587 ,  H01M2/08 ,  H01M4/75

CPC classification number: H01M10/0409 ,  H01M2/08 ,  H01M4/75 ,  H01M10/04 ,  H01M10/0431 ,  H01M10/0468 ,  H01M10/058 ,  H01M10/0587 ,  H01M2004/025

Abstract: The present disclosure relates to a cable-type secondary battery having improved performance and capable of alleviating stress caused by external force. The present disclosure provides provided a sheet-type electrode assembly which includes: an electrode array including an inner electrode, a first separator, a double-sided electrode, a second separator and an outer electrode stacked successively; and a support layer formed integrally on at least one surface of the electrode array by compression, and a cable-type secondary battery including the same.

公开(公告)号：US20180301762A1

公开(公告)日：2018-10-18

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 ,  H01M10/0565 ,  H01M4/13 ,  H01M2/34 ,  H01M4/75

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：US20180294532A1

公开(公告)日：2018-10-11

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 ,  H01M10/0525 ,  H01M4/66 ,  H01M4/583 ,  H01M4/75 ,  H01M2/16 ,  H01M2/18

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.