LITHIUM SECONDARY BATTERY

The present invention relates to a secondary battery comprising: an electrode assembly in which a cathode plate, an anode plate, and a separator interposed between the cathode plate and the anode plate are wound in one direction; a battery can for accommodating the electrode assembly; and a sealing...

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Bibliographic Details
Main Authors LEE, Myung An, LEE, Byoung Gu, RYU, Duk Hyun, KIM, Sue Jin, LEE, Kwan Hee
Format Patent
LanguageEnglish
French
Korean
Published 20.04.2023
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Summary:The present invention relates to a secondary battery comprising: an electrode assembly in which a cathode plate, an anode plate, and a separator interposed between the cathode plate and the anode plate are wound in one direction; a battery can for accommodating the electrode assembly; and a sealing material for sealing an open end portion of the battery can, wherein the cathode plate includes a cathode active material including discrete particles, discrete particle-like particles, or a combination thereof, and the Dmin of the cathode active material is 1.0 ㎛ or more. La présente invention concerne une batterie secondaire comprenant : un ensemble électrode dans lequel une plaque de cathode, une plaque d'anode et un séparateur interposé entre la plaque de cathode et la plaque d'anode sont enroulés dans une direction ; un boîtier de batterie destiné à recevoir l'ensemble électrode ; et un matériau d'étanchéité destiné à fermer hermétiquement une partie d'extrémité ouverte du boîtier de batterie, la plaque de cathode comprenant un matériau actif de cathode contenant des particules discrètes, des particules de type particules discrètes ou une combinaison de celles-ci, et le Dmin du matériau actif de cathode étant supérieur ou égal à 1. 0 ㎛. 본 발명은, 양극판, 음극판, 상기 양극판과 음극판 사이에 개재된 분리막이 일 방향으로 권취된 전극 조립체와, 상기 전극 조립체가 수납되는 전지 캔, 및 상기 전지 캔의 개방 단부를 밀봉하는 밀봉체를 포함하는 이차 전지에 관한 것으로, 상기 양극판은 단입자, 유사-단입자 또는 이들의 조합을 포함하는 양극 활물질을 포함하고, 상기 양극 활물질의 Dmin이 1.0㎛ 이상이다.
Bibliography:Application Number: WO2022KR15619