公开(公告)号：US20210367263A1

公开(公告)日：2021-11-25

申请号：US17056683

申请日：2019-06-14

Applicant: LG CHEM, LTD.

Inventor： Jung-Pil LEE ,  Sung-Joong KANG ,  Eun-Bee KIM ,  Ji-Hoon RYU ,  Suk-Woo LEE ,  Jae-Hyun LEE

IPC: H01M10/056 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/62

Abstract: A solid electrolyte membrane for a solid-state battery and a battery comprising the same is provided. The battery may comprise lithium metal as a negative electrode active material. The solid electrolyte membrane comprises an inhibiting layer, which is preferably capable of inhibiting growth of lithium dendrite, because it includes an effective amount of a dendrite growth-inhibiting material, which is capable of ionizing lithium deposited in the form of metal. Thus, when lithium metal is used as a negative electrode for a solid-state battery comprising the solid electrolyte membrane, it is possible to delay and/or inhibit growth of lithium dendrite, and thus to effectively prevent an electrical short-circuit caused by dendrite growth.

公开(公告)号：US20210320332A1

公开(公告)日：2021-10-14

申请号：US17267583

申请日：2020-03-18

Applicant: LG CHEM, LTD.

Inventor： Jung-Pil LEE ,  Eun-Bee KIM ,  Ji-Hoon RYU ,  Suk-Woo LEE

IPC: H01M10/0565 ,  H01M10/0525

Abstract: Provided is a solid electrolyte membrane including a support member, such as a porous sheet, embedded in an electrolyte membrane, wherein the support member is coated with an inhibiting material for inhibiting growth of lithium dendrite. Thus, the solid electrolyte membrane has excellent physical strength, such as puncture strength, and improved durability. In addition, the solid electrolyte membrane has an effect of inhibiting lithium dendrite growth. Thus, when the solid electrolyte membrane is applied to a lithium metal battery including lithium metal as a negative electrode material, there is provided an effect of improving the life characteristics of the battery.

公开(公告)号：US20210202990A1

公开(公告)日：2021-07-01

申请号：US17058394

申请日：2019-12-06

Applicant: LG CHEM, LTD.

Inventor： Jung-Pil LEE ,  Sung-Joong KANG ,  Eun-Bee KIM ,  Ji-Hoon RYU ,  Suk-Woo LEE

IPC: H01M10/0565 ,  H01M10/0525

Abstract: The present disclosure relates to a solid electrolyte membrane including a polymer electrolyte material and a porous polymer sheet which form a composite with each other in such a manner that the pores of the porous polymer sheet filled with the polymer electrolyte material, and a method for manufacturing the same. Since the porous polymer material and the solid electrolyte material form a composite with each other, it is possible to obtain a solid electrolyte membrane having excellent strength and a small thickness of 50 μm or less, and thus to improve the energy density of a battery.

公开(公告)号：US20210242446A1

公开(公告)日：2021-08-05

申请号：US16972171

申请日：2019-08-20

Applicant: LG CHEM, LTD.

Inventor： Guilong JIN ,  Sung-Joong KANG ,  Eun-Bee KIM ,  Ji-Hoon RYU ,  Suk-Woo LEE ,  Jung-Pil LEE

IPC: H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0585 ,  H01M10/0565 ,  H01M10/052

Abstract: The present disclosure relates to an electrode assembly for an all-solid-state battery with improved safety, and more particularly, to an electrode assembly of a new structure designed to prevent the damage of a solid electrolyte layer caused by a step formed in a negative electrode layer due to changes in thickness of the negative electrode layer, such as an increase or decrease in thickness at part of the negative electrode layer, during charging/discharging. The electrode assembly is characterized by comprising a protective layer having an opening, interposed between the negative electrode and the solid electrolyte layer.

公开(公告)号：US20210336294A1

公开(公告)日：2021-10-28

申请号：US17264604

申请日：2019-12-19

Applicant: LG CHEM, LTD.

Inventor： Eun-Bee KIM ,  Jung-Pil LEE ,  Ji-Hoon RYU ,  Suk-Woo LEE

IPC: H01M10/0565 ,  B32B37/10 ,  B32B37/18 ,  B32B5/02 ,  B32B27/12 ,  B32B27/28 ,  B32B37/06

Abstract: The present disclosure relates to an electrolyte membrane for an all-solid-state battery, an all-solid-state battery comprising the electrolyte membrane and a method for manufacturing the solid electrolyte membrane. The solid electrolyte membrane may be obtained by stacking a first protective layer, a first film-type solid electrolyte material, a porous substrate, a second film-type solid electrolyte material and a second protective layer successively to prepare a laminate structure; and carrying out pressurization of the laminate structure so that the first and the second solid electrolyte materials may be pressed into the porous substrate and the pores of the porous substrate may be filled with the solid electrolyte materials.

公开(公告)号：US20210280908A1

公开(公告)日：2021-09-09

申请号：US17260058

申请日：2019-10-10

Applicant: LG CHEM, LTD.

Inventor： Ji-Hoon RYU ,  Eun-Bee KIM ,  Suk-Woo LEE ,  Jung-Pil LEE

IPC: H01M10/0565 ,  H01M10/0585 ,  H01M10/0525 ,  H01M10/0562

Abstract: A composite electrolyte membrane according to the present disclosure includes a phase change layer on a surface in contact with an electrode, for example, a positive electrode. The phase change layer includes a filler, and a physically isolated area between the positive electrode and the composite electrolyte membrane, known as a dead space, is filled with the filler that is liquefied by heat resulting from the increased internal temperature of the battery, thereby reducing the interfacial resistance between the electrolyte membrane and the electrode.