NEGATIVE ELECTRODE FOR SECONDARY BATTERY, SLURRY FOR NEGATIVE ELECTRODE, AND METHOD FOR MANUFACTURING NEGATIVE ELECTRODE

The objective of the present invention is to provide a negative electrode for a secondary battery having improved lifespan characteristics, a slurry for the negative electrode, and a method for manufacturing the negative electrode. The negative electrode for a secondary battery contains at least a g...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUBARA, Keiko, TAKAMUKU, Akira
Format:	Patent
Sprache:	eng ; fre ; kor
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	The objective of the present invention is to provide a negative electrode for a secondary battery having improved lifespan characteristics, a slurry for the negative electrode, and a method for manufacturing the negative electrode. The negative electrode for a secondary battery contains at least a graphite-based material and a silicon-based material as a negative electrode active material, and a conductive material, the graphite-based material includes an assembly of artificial graphite and natural graphite, at least a portion of the natural graphite in the assembly is partially flaked to form a flaked portion, and the flaked portion is in contact with the silicon-based material or another assembly of artificial graphite and natural graphite, or is complexed with the silicon-based material. L'objectif de la présente invention est de fournir une électrode négative pour une batterie secondaire présentant des caractéristiques de durée de vie améliorées, une suspension pour l'électrode négative et un procédé de fabrication de l'électrode négative. L'électrode négative pour une batterie secondaire contient au moins un matériau à base de graphite et un matériau à base de silicium en tant que matériau actif d'électrode négative et un matériau conducteur, le matériau à base de graphite comprenant un ensemble de graphite artificiel et de graphite naturel, au moins une partie du graphite naturel dans l'ensemble étant partiellement transformée en flocons pour former une partie en flocons et la partie en flocons étant en contact avec le matériau à base de silicium ou un autre ensemble de graphite artificiel et de graphite naturel ou étant complexée avec le matériau à base de silicium. 수명 특성이 개선된 이차전지용 음극, 음극용 슬러리, 및 음극의 제조 방법을 제공하는 것을 과제로 한다. 이차전지용 음극은, 음극 활물질로서의 흑연계 재료 및 규소계 재료와, 도전재를 적어도 함유하고, 흑연계 재료가 인조 흑연과 천연 흑연의 조립체를 포함하고, 조립체 중의 적어도 일부의 천연 흑연이 부분적으로 박편화되어 박편화 부분을 형성하고 있고, 박편화 부분이 규소계 재료 혹은 다른 인조 흑연과 천연 흑연의 조립체와 접촉하고 있거나 또는 규소계 재료와 복합화하고 있다.