Positive electrode for lithium secondary battery preparing method thereof and lithium secondary battery comprising the same

A new structure of positive electrode for a secondary battery which comprises a double-layered different positive electrode active material layers, a manufacturing method thereof, and a lithium secondary battery including the same are provided. The positive electrode comprises: a positive current co...

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Bibliographische Detailangaben
Hauptverfasser: KIM KI JUN, SON DONG HO, KANG KI SUK, PARK JI WON
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:A new structure of positive electrode for a secondary battery which comprises a double-layered different positive electrode active material layers, a manufacturing method thereof, and a lithium secondary battery including the same are provided. The positive electrode comprises: a positive current collector; a first layer disposed on at least one surface of a positive electrode current collector and including a first positive electrode active material; and a second layer disposed on the first layer and including a second positive electrode active material. The first positive electrode active material and the second positive electrode active material are each independently represented by chemical formula 1, Li_xNi_yM_(1-y)O_2. The first positive electrode active material and the second positive electrode active material are different from each other. In the formula, the detailed description of the invention is referred to definitions for x, y, and M. 양극 집전체; 상기 양극 집전체의 적어도 일면 상에 배치되고, 제1 양극 활물질을 포함하는 제1층; 및 상기 제1층 상에 배치되고, 제2 양극 활물질을 포함하는 제2층;을 포함하고, 상기 제1 양극 활물질 및 상기 제2 양극 활물질은 서로 독립적으로 하기 화학식 1로 표시되고, 상기 제1 양극 활물질 및 상기 제2 양극 활물질은 서로 상이한, 이차전지용 양극, 이의 제조방법 및 이를 포함하는 리튬 이차전지가 제공된다: LixNiyM1-yO2 상기 식에서, 상기 식에서, x, y, 및 M에 대한 정의는 발명의 상세한 설명을 참조한다.