公开(公告)号：US11848437B2

公开(公告)日：2023-12-19

申请号：US16643782

申请日：2018-12-20

Applicant: LG CHEM, LTD.

Inventor： Sun-Young Shin ,  Jun-Hyuk Song ,  Yong-Ju Lee ,  Je-Young Kim

IPC: H01M4/133 ,  H01M4/38 ,  H01M4/66 ,  H01M4/48 ,  H01M4/134 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/02

CPC classification number: H01M4/133 ,  H01M4/134 ,  H01M4/366 ,  H01M4/386 ,  H01M4/48 ,  H01M4/587 ,  H01M4/663 ,  H01M10/0525 ,  H01M2004/027

Abstract: A negative electrode including: a negative electrode current collector; and a negative electrode active material layer on at least one surface of the negative electrode current collector. The negative electrode is pre-lithiated and the negative electrode active material layer includes a silicon-based material and a carbonaceous material. In addition, a graphene sheet having 2 layers to 15 layers is on the negative electrode active material layer. The negative electrode is advantageous in terms of storage and safety. A lithium secondary battery using the negative electrode shows reduced initial irreversibility, and thus provides increased efficiency.

公开(公告)号：US11742549B2

公开(公告)日：2023-08-29

申请号：US16641750

申请日：2019-03-20

Applicant: LG CHEM, LTD.

Inventor： Oh-Byong Chae ,  Sang-Wook Woo ,  Je-Young Kim

IPC: H01M50/46 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0569 ,  H01M50/449 ,  H01M50/403 ,  H01M4/02

CPC classification number: H01M50/46 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/525 ,  H01M4/621 ,  H01M10/0525 ,  H01M10/0569 ,  H01M50/403 ,  H01M50/449 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028

Abstract: A separator including: a porous polymer substrate having a plurality of pores; and a coating layer formed on at least one surface of the porous polymer substrate, and including a plurality of lithium-containing composite particles and a binder positioned on the whole or a part of the surface of the lithium-containing composite particles to connect and fix the lithium-containing composite particles with each other, wherein the lithium-containing composite particles includes a lithiated compound and a passivation film formed on the surface of the lithiated compound, and the passivation film includes a solid electrolyte interface (SEI). A lithium secondary battery including the separator and a method for manufacturing the lithium secondary battery are also provided.

公开(公告)号：US11424440B2

公开(公告)日：2022-08-23

申请号：US16632645

申请日：2018-12-19

Applicant: LG CHEM, LTD.

Inventor： Sun-Young Shin ,  Yong-Ju Lee ,  Je-Young Kim

IPC: H01M4/133 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

Abstract: Provided is a negative electrode active material including secondary particles assembled from silicon composite primary particles represented by Mg—SiOx (0

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：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：US20180006289A1

公开(公告)日：2018-01-04

申请号：US15636920

申请日：2017-06-29

Applicant: LG Chem, Ltd.

Inventor： Jong-Heon Seol ,  Jin-Young Son ,  Hyung-Suk Cho ,  Sin-Young Jung ,  Yoon-Jung Choi ,  Yo-Jin Kim ,  Je-Young Kim ,  Sung-Joon Park ,  Jung-Keun Yoo ,  Sang-Hoon Choy

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/66 ,  H01M4/88 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/04 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/139 ,  H01M4/622 ,  H01M4/663 ,  H01M4/667 ,  H01M4/668 ,  H01M4/8828 ,  H01M4/8896 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: Disclosed is a positive electrode for a lithium secondary battery which uses a positive electrode active material containing secondary particles with a relatively weak particle strength to improve the adhesion between a positive electrode mixture layer and a current collector, and the positive electrode includes a positive electrode current collector; a primer coating layer including a first polymer binder and a first conductive material, having surface roughness (Ra) of 85 nm to 300 nm and formed on at least one surface of the positive electrode current collector; and a positive electrode mixture layer formed on an upper surface of the primer coating layer and including a positive electrode active material containing secondary particles with a compressive breaking strength of 1 to 15 MPa, a second polymer binder and a second conductive material.

公开(公告)号：US09780367B2

公开(公告)日：2017-10-03

申请号：US14771041

申请日：2014-05-07

Applicant: LG Chem, Ltd.

Inventor： Je-Young Kim ,  Hyun-Chul Kim ,  Yong-Ju Lee

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/583 ,  H01M4/62 ,  H01M4/13 ,  H01M4/48 ,  H01M10/052 ,  H01M4/02

CPC classification number: H01M4/386 ,  H01M4/04 ,  H01M4/0428 ,  H01M4/13 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/483 ,  H01M4/583 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/027

Abstract: Disclosed herein is a non-carbon-based anode active material for lithium secondary batteries, including: a core containing silicon (Si); and silicon nanoparticles formed on the surface of the core. The non-carbon-based anode active material is advantageous in that the increase in the volume expansion during charging-discharging can be prevented by the application of silicon nanoparticles, and in that SiOx(x

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.

公开(公告)号：US09660289B2

公开(公告)日：2017-05-23

申请号：US14484472

申请日：2014-09-12

Applicant: LG Chem, Ltd.

Inventor： Yo-Han Kwon ,  Hye-Ran Jung ,  Eun-Kyung Kim ,  Je-Young Kim ,  In-Chul Kim ,  Hyo-Mi Kim

IPC: H01M4/00 ,  H01M10/04 ,  H01M2/14 ,  H01M4/02 ,  H01M4/13 ,  H01M4/64 ,  H01M10/052 ,  H01M10/058 ,  H01M4/66 ,  H01M4/78 ,  H01M10/0565 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/04 ,  H01M4/131 ,  H01M4/36 ,  H01M4/62 ,  H01M4/80 ,  H01M10/0525

CPC classification number: H01M10/0422 ,  H01M2/14 ,  H01M4/02 ,  H01M4/0409 ,  H01M4/0416 ,  H01M4/043 ,  H01M4/13 ,  H01M4/131 ,  H01M4/366 ,  H01M4/622 ,  H01M4/623 ,  H01M4/64 ,  H01M4/661 ,  H01M4/662 ,  H01M4/663 ,  H01M4/664 ,  H01M4/667 ,  H01M4/669 ,  H01M4/78 ,  H01M4/80 ,  H01M10/04 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/0567 ,  H01M10/0569 ,  H01M10/058 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A sheet-form electrode for a secondary battery includes a current collector, an electrode active material layer formed on one surface of the current collector, a porous polymer layer formed on the electrode active material layer, and a first porous supporting layer formed on the porous polymer layer. The sheet-form electrode can have supporting layers on at least one of the surfaces thereof to exhibit surprisingly improved flexibility and prevent the release of the electrode active material layer from a current collector even if intense external forces are applied to the electrode, thereby preventing the decrease of battery capacity and improving the cycle life characteristic of the battery.