公开(公告)号：US20250083177A1

公开(公告)日：2025-03-13

申请号：US18826598

申请日：2024-09-06

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Junhyeok KWAK ,  Kyubuem CHOI ,  Seung-Hun HAN ,  Moonju CHO

IPC: B05C5/02 ,  H01M50/426 ,  H01M50/434 ,  H01M50/446 ,  H01M50/46

Abstract: A slot die coater including a bottom and top die coupled in a top-bottom direction, the bottom and top die forming a coated portion by coating an active material slurry on an electrode substrate, and discharging a ceramic insulating material to a boundary of the coated portion and an uncoated portion; and a spacer including an active material discharge portion between the bottom and top die and providing an active material discharge port that discharges the active material slurry, and a ceramic material discharge portion providing a ceramic discharge port that discharges the ceramic insulating material, wherein the active material discharge port is at a center of the electrode substrate, the ceramic discharge port is on sides of the active material discharge port, and the ceramic discharge port forms the ceramic insulation layer by overlapping the ceramic insulation layer on the coated portion at ends.

公开(公告)号：US20240372089A1

公开(公告)日：2024-11-07

申请号：US18773371

申请日：2024-07-15

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Mihwa YANG ,  Moonju CHO ,  Minjae KIM ,  Beomkwon KIM

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/505 ,  H01M10/0525

Abstract: A lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolyte located therebetween. The positive electrode active material includes a lithium cobalt-based active material and a lithium nickel cobalt-based active material, wherein the lithium cobalt-based active material is larger in size and amount than the lithium nickel cobalt-based active material, and the lithium nickel cobalt-based active material is a one-body positive electrode active material.

公开(公告)号：US20210305561A1

公开(公告)日：2021-09-30

申请号：US17211650

申请日：2021-03-24

Applicant: Samsung SDI Co., Ltd.

Inventor： Mihwa YANG ,  Moonju CHO ,  Minjae KIM ,  Beomkwon KIM

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525

Abstract: A lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolyte located therebetween. The positive electrode active material includes a lithium cobalt-based active material and a lithium nickel cobalt-based active material, wherein the lithium cobalt-based active material is larger in size and amount than the lithium nickel cobalt-based active material, and the lithium nickel cobalt-based active material is a one-body positive electrode active material.