LITHIUM SECONDARY BATTERY

The present invention relates to a lithium secondary battery. The lithium secondary battery comprises: a cathode comprising a cathode active material represented by following formula 1, a plate-like conductive agent, and a spherical conductive agent; an anode comprising an anode active material; and...

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Main Authors PARK, Dohyung, CHA, Jungwook, LEE, Kunwoo, WON, Jungyeon, KIM, Dongjin, KIM, Eun Jung
Format Patent
LanguageEnglish
French
Korean
Published 09.08.2018
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Summary:The present invention relates to a lithium secondary battery. The lithium secondary battery comprises: a cathode comprising a cathode active material represented by following formula 1, a plate-like conductive agent, and a spherical conductive agent; an anode comprising an anode active material; and an electrolyte, wherein the cathode has a W value defined by following formula 1 of 1.0 to 1.5. [Formula 1] LiaNixCoyMezO2 (where 0.9 ≤ a ≤ 1.1, 0.5 ≤ x ≤ 0.90, 0.05 ≤ y ≤ 0.5, 0.01 ≤ z ≤ 0.5, x + y + z =1, and Me is Mn or Al.) La présente invention concerne une batterie secondaire au lithium. La batterie secondaire au lithium comprend : une cathode comprenant un matériau actif de cathode représenté par la formule suivante 1, un agent conducteur de type plaque, et un agent conducteur sphérique ; une anode comprenant un matériau actif d'anode ; et un électrolyte, la cathode ayant une valeur W définie par la formule suivante 1 de 1,0 à 1,5. Formule 1 : LiaNixCoyMezO2 (où 0,9 ≤ a ≤ 1,1, 0,5 ≤ x ≤ 0,90, 0,05 ≤ y ≤ 0,5, 0,01 ≤ z ≤ 0,5, x + y + z = 1, et où Me représente Mn ou Al). 리튬 이차 전지에 관한 것으로서, 이 리튬 이차 전지는 하기 화학식 1의 양극 활물질, 판상 도전재 및 구형 도전재를 포함하는 양극; 음극 활물질을 포함하는 음극; 및 전해질을 포함하며, 상기 양극은 하기 식 1로 정의되는 W값이 1.0 내지 1.5이다. [화학식 1] LiaNixCoyMezO2 (상기 화학식 1에서, 0.9 ≤ a ≤ 1.1, 0.5 ≤ x ≤ 0.90, 0.05 ≤ y ≤ 0.5, 0.01 ≤ z ≤ 0.5, x + y + z =1, Me는 Mn 또는 Al임)
Bibliography:Application Number: WO2017KR13629