公开(公告)号：US20170309475A1

公开(公告)日：2017-10-26

申请号：US15513473

申请日：2015-10-26

Applicant: LG CHEM, LTD.

Inventor： Tae-Su KIM ,  Jin-Soo LEE ,  Bu-Gon SHIN ,  Ki-Eun SUNG ,  Dae-Han SEO

IPC: H01L21/02 ,  H01M4/131 ,  C01D15/02 ,  H01M10/0525 ,  B23K26/00

CPC classification number: H01L21/02098 ,  B23K26/356 ,  C01D15/02 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/139 ,  H01M10/052 ,  H01M10/0525 ,  H01M2010/4292

Abstract: The present invention relates to an electrode manufacturing method, an electrode manufactured thereby, and a battery comprising the same, the electrode manufacturing method comprising the steps of: applying an electrode active material onto a collector; and radiating a laser such that the end of an electrode active material layer, which has been obtained by applying the electrode active material, becomes straight, thereby removing the electrode active material.The present invention is advantageous in that the difference in area between active materials applied to the positive and negative electrodes, respectively, is minimized, thereby increasing the capacity and improving the stability of the battery.

公开(公告)号：US20170301900A1

公开(公告)日：2017-10-19

申请号：US15513367

申请日：2015-10-26

Applicant: LG CHEM, LTD.

Inventor： Tae-Su KIM ,  Ki-Eun SUNG ,  Jin-Soo LEE ,  Bu-Gon SHIN ,  Sang-Ik LEE ,  Dae-Won LEE

IPC: H01M2/14 ,  H01M2/16 ,  B23K26/402 ,  B23K26/38 ,  B23K26/082 ,  B23K101/36 ,  B23K103/16

CPC classification number: H01M2/145 ,  B23K26/082 ,  B23K26/38 ,  B23K26/402 ,  B23K2101/36 ,  B23K2103/172 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/1686 ,  H01M10/052

Abstract: The present invention relates to a method for cutting a separation membrane for a battery, in which the separation membrane is cut by laser radiation on the separation membrane, wherein the pulse repetition rate of the laser is 10 to 500 kHz; a separation membrane manufactured by the method; and a battery comprising the separation membrane. The present invention, in contrast with physical cutting, has the advantage of being capable of cutting a separation membrane for a battery so as to have a uniform cut surface, which was impossible by conventional physical cutting methods.

公开(公告)号：US20210328305A1

公开(公告)日：2021-10-21

申请号：US17362519

申请日：2021-06-29

Applicant: LG CHEM, LTD.

Inventor： Tae-Su KIM ,  Ki-Eun SUNG ,  Jin-Soo LEE ,  Bu-Gon SHIN ,  Sang-Ik LEE ,  Dae-Won LEE

IPC: H01M50/403 ,  H01M50/411 ,  H01M50/431 ,  H01M50/449 ,  B23K26/082 ,  B23K26/38 ,  B23K26/402

Abstract: The present invention relates to a method for cutting a separation membrane for a battery, in which the separation membrane is cut by laser radiation on the separation membrane, wherein the pulse repetition rate of the laser is 10 to 500 kHz; a separation membrane manufactured by the method; and a battery comprising the separation membrane. The present invention, in contrast with physical cutting, has the advantage of being capable of cutting a separation membrane for a battery so as to have a uniform cut surface, which was impossible by conventional physical cutting methods.