POROUS CATHOD ACTIVE MATERIAL FOR LITHIUM RECHARGEABLE BATTERY AND PREPARATION METHOD THEREOF

The present invention relates to a positive electrode active material for a lithium battery having a porous structure and a producing method. The positive electrode active material for a lithium battery according to the present invention is porous structure particles having pores distributed through...

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Bibliographische Detailangaben
Hauptverfasser:	LIM, KYU SUN, MUN, JAE WOONG, CHOI, SEUNG UN, LEE, JI WON, LEE, A RAM, KANG, DO SOON
Format:	Patent
Sprache:	eng ; 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 present invention relates to a positive electrode active material for a lithium battery having a porous structure and a producing method. The positive electrode active material for a lithium battery according to the present invention is porous structure particles having pores distributed throughout an interior region of second particles formed by agglomerates of first particles. A specific surface area is large because a distribution form of the pores is a radial, thereby electrolyte introduction inside pores is easy, moving resistance of lithium ions is reduced, and thus a secondary battery having high output properties can be produced. 본 발명에 따른 리튬전지용 양극활물질은 1차 입자의 응집체로 형성된 2차 입자의 내부 영역 전반에 걸쳐 기공이 분포하는 다공성 구조의 입자로서, 상기 기공의 분포형태가 방사형을 이루고 있음으로써, 넓은 비표면적을 가질 수 있으며, 이로 인해 전해액의 기공내부로 유입되는 것이 용이해져 리튬이온의 이동 저항이 감소함으로써 고출력 특성을 갖는 이차전지의 제조를 가능하게 할 수 있다.