公开(公告)号：US20210151732A1

公开(公告)日：2021-05-20

申请号：US16952354

申请日：2020-11-19

Applicant: SAMSUNG SDI CO., LTD. ,  Korea University Research and Business Foundation

Inventor： Won-Gi AHN ,  Yongho KIM ,  Jin Seok PARK ,  Juhye BAE ,  Hyeri EOM ,  Min-young JEONG ,  Hyun Wook JUNG

IPC: H01M4/04 ,  B05D1/36 ,  H01M4/62 ,  B05C5/02

Abstract: A slot die for manufacturing a rechargeable battery electrode includes a first block with a chamber to accommodate an active material slurry, a second block facing and attached to the first block, a shim between the first and second blocks and including facing end portions, and a slot between the first and second blocks, and between the facing end portions, the slot including a first side defined by the first block, and a second side defined by the second block and facing the first side. Each of the end portions of the shim includes a width adjuster protruding to a second reference point from a first reference point in a width direction by a first adjusting width, extending to a third reference point from the second reference point at a first angle with respect to a discharging direction, and having a first adjusting length in the discharging direction.

公开(公告)号：US20190160485A1

公开(公告)日：2019-05-30

申请号：US16023270

申请日：2018-06-29

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Hyun Wook JUNG ,  Byoung Jin Chun ,  Kwan Young Lee ,  Jin Seok Park ,  Gi Wook Lee ,  Won Gi Ahn

IPC: B05C5/02

Abstract: A slot coating apparatus having an improved coating bead region is disclosed. An embodiment of the invention provides a slot coating apparatus configured to coat a coating liquid containing a high concentration of particles over a substrate, where the slot coating apparatus includes: a first slot die that is arranged at a downstream side of the coating liquid; a second slot die that is arranged at an upstream side of the coating liquid and is positioned facing the first slot die; a coating bead cover that extends from one side of the first slot die along a movement direction of the substrate; and a pressure adjustment device that is disposed at the second slot die side and is configured to form a pressure gradient between the downstream and the upstream.

公开(公告)号：US20240055575A1

公开(公告)日：2024-02-15

申请号：US18230009

申请日：2023-08-03

Applicant: SAMSUNG SDI CO., LTD. ,  Korea University Research and Business Foundation of Korea University

Inventor： Gwangwon PARK ,  Won-Gi AHN ,  Min-young JEONG ,  Taeil LEE ,  Juhye BAE ,  Jin Seok PARK ,  Hyun Wook JUNG ,  Kwan Young LEE

IPC: H01M4/04 ,  H01M4/13 ,  H01M4/139

CPC classification number: H01M4/0404 ,  H01M4/13 ,  H01M4/139 ,  H01M2004/027

Abstract: A method of preparing a negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the negative electrode, and the method of preparing the negative electrode may include preparing an active material layer on a current collector so that a coated portion in which the active material layer is formed and an uncoated region in which an active material is not formed are alternatively arranged, the active material, wherein the coated portion is formed by coating a first negative active material layer composition having a capillary number of about 0.25 to about 1.50 on the current collector and coating a second negative active material layer composition having a capillary number of about 0.28 to about 1.50 on the first negative active material layer composition.

公开(公告)号：US20180333684A1

公开(公告)日：2018-11-22

申请号：US15768431

申请日：2016-11-24

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Jung-hyun LEE ,  Hyun Wook JUNG ,  Sung-Joon PARK ,  Won-gi AHN ,  Wanseok CHOI ,  Yong Woo LEE

IPC: B01D69/12 ,  B01D67/00 ,  B01D71/56 ,  C02F1/44 ,  B05C5/02

CPC classification number: B01D69/125 ,  B01D61/02 ,  B01D67/00 ,  B01D67/0006 ,  B01D67/0095 ,  B01D69/10 ,  B01D69/12 ,  B01D71/06 ,  B01D71/56 ,  B05C5/0254 ,  C02F1/44 ,  Y02A20/131

Abstract: The present invention relates to a preparation process for a thin film composite (TFC) membrane (hereinafter TFC membrane), and provides a method for the preparation of a membrane through a one-step process using a dual (double layer)-slot coating technique. In the dual (double layer)-slot coating process according to the present invention, a TFC membrane can be prepared by: forming a double-solution layer through a one-step process of performing simultaneous applying/contact of two immiscible solutions, in which two kinds of reactive organic monomers are dissolved, on a porous support; and synthesizing a selective layer through a crosslinking reaction between the organic monomers at an interface of the double layer.