公开(公告)号：US20200152981A1

公开(公告)日：2020-05-14

申请号：US16682907

申请日：2019-11-13

Applicant: Samsung SDI Co., Ltd.

Inventor： Jongmin KIM ,  Donghyun KIL ,  Wooyoung YANG ,  Seung Joon LEE

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

Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based composite oxide including a secondary particle in which a plurality of plate-shaped primary particles are agglomerated; and a lithium manganese composite oxide having at least two crystal lattice structures, wherein the secondary particle has a regular array structure in which (003) planes of the primary particles are oriented in a vertical direction with respect to the surface of the secondary particle.

公开(公告)号：US20240385247A1

公开(公告)日：2024-11-21

申请号：US18667091

申请日：2024-05-17

Applicant: SAMSUNG SDI CO., LTD. ,  Research & Business Foundation SUNGKYUNKWAN UNIVERSITY

Inventor： Seung Joon LEE ,  Jea Woan LEE ,  Ho Seok PARK ,  Jun Su KIM ,  Yoon Bin KIM ,  Yun Sang JOE

IPC: G01R31/36 ,  G01R31/385

Abstract: The present disclosure relates to a jig for measuring a 3-electrode voltage. The jig can measure charging and discharging voltages of a secondary battery in an environment similar to that of an actually used secondary battery by minimizing air contact and electrolyte use of a battery cell. In an embodiment, disclosed is a jig for measuring a 3-electrode voltage that comprises a jig body including a receiving part for mounting a secondary battery in which an electrode assembly is accommodated inside a case. The jig also includes a jig door that opens or closes a side of the jig body in which the receiving part is located. The jig further includes a cathode electrode that is mounted to the jig body, with the cathode electrode including a part being electrically connected to a cathode electrode tab protruding from upper portion of the secondary battery mounted in the receiving part, and with a part of the cathode electrode protruding to outside of the jig. An anode electrode is mounted to the jig body, with the cathode electrode being electrically connected to a conductive member electrically connected to the case of the secondary battery, and the cathode electrode having a part protruding to outside of the jig. A reference electrode penetrates a top plate of the jig body, is inserted into an electrolyte in a core of the secondary battery mounted in the receiving part, and protrudes upward from the jig body.