10-05-2018 дата публикации
Номер: KR1020180048131A
Автор:
LEE, JUN KYU,
KA, BOK HYUN,
SEO, NA RI,
SHEEM, KYEU YOON,
LEE, JIN HYON,
CHOI, EUN HYUNG
Принадлежит:
The present invention relates to a lithium secondary battery with excellent energy density. According to the present invention, the lithium secondary battery comprises: a cathode including a cathode current collector, and a cathode active material layer formed in the cathode current collector and including a carbon-based cathode active material, wherein a degree of divergence (DD) value defined as formula 1, DD (degree of divergence) = (I_a/I_total) X 100, is 19 to 60; an anode including an anode current collector, and an anode active material layer formed in the anode current collector and including an anode active material and a porous structured additive, wherein a content of the porous structured additive is 0.01 to 2 weight percent with respect to 100 weight percent of the anode active material layer; and an electrolyte. In formula 1, I_a is a sum of peak intensity appeared at a non-planar angle during XRD measurement by using CuK_&alpha and I_total is a sum of peak intensity appeared ...
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