JELLY-ROLL TYPE ELECTRODE ASSEMBLY COMPRISING ANODE IN WHICH ANODE MIXTURES COMPRISING ACTIVE MATERIALS OF DIFFERENT COMPOSITIONS ARE FORMED ON BOTH SURFACES OF CURRENT COLLECTOR, SECONDARY BATTERY COMPRISING SAME, AND DEVICE COMPRISING SECONDARY BATTERY

Provided are a jelly-roll type electrode assembly, a secondary battery comprising same, and a device comprising the secondary battery, the jelly-roll type electrode assembly being wound in a state in which a separator having a long sheet structure is interposed between a sheet-type cathode and a sheet-type anode, wherein the anode has anode mixtures respectively formed on both surfaces of an anode current collector, and when the surface of the anode current collector, which is to be inwardly wound during winding for forming the electrode assembly, is a first surface and the surface to be outwardly wound is a second surface, a first anode mixture coated on the first surface comprises at least 70 wt% of artificial graphite as an active material on the basis of the total weight of the active material, and a second anode mixture coated on the second surface comprises at least 70 wt% of natural graphite as an active material on the basis of the total weight of the active material. Ensemble électrode de type roulé, batterie secondaire comprenant celui-ci, et dispositif comprenant la batterie secondaire, l'ensemble électrode de type roulé étant enroulé dans un état dans lequel un séparateur ayant une longue structure de feuille est interposé entre une cathode de type feuille et une anode de type feuille, l'anode ayant des mélanges d'anode respectivement formés sur les deux surfaces d'un collecteur de courant d'anode, et lorsque la surface du collecteur de courant d'anode, qui doit être enroulé vers l'intérieur pendant l'enroulement pour former l'ensemble électrode, est une première surface et la surface à enrouler vers l'extérieur est une seconde surface, un premier mélange d'anode étalé sur la première surface comprend au moins 70 % en poids de graphite artificiel en tant que matériau actif sur la base du poids total du matériau actif, et un second mélange d'anode étalé sur la seconde surface comprend au moins 70 % en poids de graphite naturel en tant que matériau actif sur la base du poids total du matériau actif. 시트형의 양극과 음극 사이에 긴 시트 구조의 분리막이 개재된 상태로 권취되어 있는 젤리-롤형 전극조립체에 있어서, 상기 음극은 음극 집전체의 양면에 각각 음극 합제가 형성되어 있으며, 상기 음극 집전체에서, 전극조립체를 형성하기 위한 권취시 내측으로 감기는 면을 제 1 면, 외측으로 감기는 면을 제 2 면이라고 할 때, 제 1 면에 코팅되는 제 1 음극 합제는 활물질로서 인조 흑연이 활물질 전체 중량을 기준으로 70중량% 이상으로 포함되며, 제 2 면에 코팅되는 제 2 음극 합제는 활물질로서, 천연 흑연이 활물질 전체 중량을 기준으로 70중량% 이상으로 포함되는 젤리-롤형 전극조립체, 이를 포함하는 이차전지, 및 이차전지를 포함하는 디바이스를 제공한다.