L&f Co., Ltd.

Sun Hye Lim

Sang Hoon Jeon

Ji Sun An

Sung Kyun Chang

Su An Choi

Doe Hyoung Kim

Joo Hyeong Woo

Jaeshin Shin

Jeongsoo Son

Jihye Ku

Hye Yun Jung

Ji Hyun Shin

Jae Yeoung Park

Disclosed is an active material for a secondary battery, the active material containing aggregates, each including a plurality of single particles, or a mixture of the aggregates with non-aggregated single particles, the active material including a first region having a relatively high content of an additional element (X) and a second region having a relatively low content of the additional element (X), wherein the first region is at least one region of a grain boundary formed whereby the surfaces of the single particles constituting the aggregate contact one another and a void (pore or gap) between the single particles, and/or a surface region of each single particle, wherein the additional element (X) includes at least one selected from the group consisting of Zr, Ti, Al, W, B, P, Mn, Ni, Mg, Cr, Ca, V, Sr, Y, F, Zn, Ga, Sn, Ru, Ce, La, and Si.

Secondary battery active material

Disclosed are a cathode active material for a lithium secondary battery including a core containing lithium composite metal oxide, and a coating layer disposed on the core, containing a mixture of lithium oxide, tungsten oxide, boron oxide and phosphorus oxide, and having an amorphous phase, and a lithium secondary battery including the same.

Cathode active material for lithium secondary battery

The present invention relates to a cathode active material, and a lithium secondary battery comprising the same, the present invention provides a cathode active material, represented by the following Chemical Formula 1, wherein I003/I104 ratio is 1.6 or more, and R-factor value represented by the following Formula 1 is 0.40 to 0.44, and c-axis lattice constant (c) and a-axis lattice constant (a) satisfy 3()+5.555&#x2264;(c)&#x2264;3()+5.580:-factor=(102+006)/(101)&#x2003;&#x2003;Formula 1

Cathode active material and lithium secondary battery comprising same

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Daegu, South Korea

Sun Hye Lim