ANODE FOR SECONDARY BATTERY AND SECONDARY BATTERY INCLUDING SAME

An anode for a secondary battery according to an embodiment of the present invention comprises: an anode current collector; a first active material layer obtained by coating a first anode slurry containing a first anode active material on the anode current collector; and a second active material lay...

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Bibliographic Details
Main Authors PIAO, Lilin, WOO, Sangwook
Format Patent
LanguageEnglish
French
Korean
Published 03.02.2022
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Summary:An anode for a secondary battery according to an embodiment of the present invention comprises: an anode current collector; a first active material layer obtained by coating a first anode slurry containing a first anode active material on the anode current collector; and a second active material layer obtained by coating a second anode slurry containing a second anode active material on the first anode material layer, wherein the first anode active material contains natural graphite having an inner pore volume of 0.6*10-3cm3/g to 2.5*10-3cm3/g and the second anode active material contains artificial graphite. La présente invention porte, selon un mode de réalisation, sur une anode pour une batterie secondaire, ladite anode comprenant : un collecteur de courant d'anode ; une première couche de matériau actif obtenue par revêtement d'une première bouillie d'anode contenant un premier matériau actif d'anode sur le collecteur de courant d'anode ; et une seconde couche de matériau actif obtenue par revêtement d'une seconde bouillie d'anode contenant un second matériau actif d'anode sur la première couche de matériau d'anode, le premier matériau actif d'anode contenant du graphite naturel ayant un volume de pore interne de 0,6*10-3cm3/g à 2,5*10-3cm3/g et le second matériau actif d'anode contenant du graphite artificiel. 본 발명의 일 실시예에 따른 이차전지용 음극은, 음극 집전체; 상기 음극 집전체 상에 제1 음극 활물질이 포함된 제1 음극 슬러리가 도포된 제1 활물질층; 및 상기 제1 활물질층 상에 제2 음극 활물질이 포함된 제2 음극 슬러리가 도포된 제2 활물질층을 포함하고, 상기 제1 음극 활물질은 내부 기공 용적은 0.6*10-3cm3/g 이상 2.5*10-3cm3/g 이하인 천연 흑연을 포함하고, 상기 제2 음극 활물질은 인조 흑연을 포함한다.
Bibliography:Application Number: WO2021KR09282