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：US20210234217A1

公开(公告)日：2021-07-29

申请号：US15734836

申请日：2019-10-21

Applicant: LG Chem, Ltd.

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

IPC: H01M50/126 ,  H01M50/117 ,  H01M50/131 ,  H01M50/107 ,  H01M50/183

Abstract: A packaging for a flexible secondary battery improves the vapor barrier performance and flexibility of the flexible secondary battery. The packaging is in a shape of a tube that is wrapped around an outer surface of an electrode assembly, and includes a mechanical support layer; a reduced graphene oxide layer disposed on the mechanical support layer and including a plurality of reduced graphene oxide sheets; a heat shrink layer disposed on the reduced graphene oxide layer; and a sealant layer disposed on the heat shrink layer, wherein the plurality of reduced graphene oxide sheets in the reduced graphene oxide layer forms electrostatic interaction between adjacent sheets of the plurality of reduced graphene oxide sheets. A flexible secondary battery including the packaging is also provided.

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.