COMPOSITE ANODE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

The present invention relates to a composite anode and a secondary battery comprising same, the composite anode comprising: a silicon-containing structure; a first carbon material; a second carbon material; and a conductive material, wherein the first carbon material has a specific surface area (BET...

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Bibliographische Detailangaben
Hauptverfasser: CHOI, Ick Kyu, CHU, Hee Young, CHOI, Yoon Young, OH, Doo Ri, SOH, Hyun, CHO, Yun Gu
Format: Patent
Sprache:eng ; fre ; kor
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Zusammenfassung:The present invention relates to a composite anode and a secondary battery comprising same, the composite anode comprising: a silicon-containing structure; a first carbon material; a second carbon material; and a conductive material, wherein the first carbon material has a specific surface area (BET) value of 1.5 m 2/g or less, the rate of the change in specific surface area (m 2/g) to the increase in particle size (㎛) is -0.07 to -0.04 m 2/㎛·g, and the area occupied by pores in the cross section of the first carbon material is 10% or less. La présente invention concerne une anode composite et une batterie rechargeable la comprenant, l'anode composite comprenant : une structure contenant du silicium ; un premier matériau carboné ; un second matériau carboné ; et un matériau conducteur, le premier matériau carboné possédant une valeur de surface spécifique (BET) de 1,5 m2/g ou moins, le taux du changement de surface spécifique (m2/ g) par rapport à l'augmentation de la taille de particules (µm) est de -0,07 à -0,04 m 2/µm et la surface occupée par des pores dans la section transversale du premier matériau de carbone est inférieure ou égale à 10 %. 본 발명은 실리콘-함유 구조체; 제1 탄소 재료; 제2 탄소 재료; 및 도전재;를 포함하고, 상기 제1 탄소 재료는 1.5 m 2/g 이하의 비표면적(BET) 값을 갖고, 입자 크기(㎛)의 증가에 대한 비표면적(m 2/g)의 변화율이 -0.07 내지 -0.04 m 2/㎛ㅇg이고, 제1 탄소 재료의 단면 중 기공이 차지하는 면적이 10% 이하인, 복합 음극, 및 이를 포함한 이차전지에 관한 것이다.