L&f Co., Ltd.

Ji Sun An

Sang Hoon Jeon

Su An Choi

Jun Ho Shin

Bong Jun Jeong

Ho Jun Jeong

Ji Woon Yang

Sung Kyun Chang

Sun Hye Lim

Sung Woo Cho

Chang Min Choi

Joo Hyeong Woo

Su Youn Kwon

Jaeshin Shin

Jeongsoo Son

Mi Hye Yun

Jihye Ku

Yu Jin Sohn

Su Youn Kwong

Hyun Chul Jung

Jin Seong Jeong

Ji Hyun Shin

Disclosed is 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 and having an amorphous phase, wherein the amorphous phase contains lithium oxide, tungsten oxide, and boron oxide in a form of mixture.

Positive electrode active material for lithium secondary battery

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

The present invention relates to a metal oxide powder, a method of preparing the same, and a lithium secondary battery using the same, which comprises:

Metal oxide powder, method for preparing same, and lithium secondary battery comprising same

In an embodiment of the present invention, a positive active material for a lithium secondary battery is represented by Formula 1, and includes a core including a compound having a core portion and a surface portion, and the compound has a lower L3/L2 intensity ratio of Ni in the surface portion than an L3/L2 intensity ratio of Ni in the core portion.Li[LiAD]EO&#x2003;&#x2003;[Formula 1] (In the above formula (1), A is NiCoMn, D is at least one element selected from the group consisting of Na, K, Mg, Ca, Sr, Ni, Co, Ti, Al, B, Si, Sn, Mn, Cr, Fe, V, Zr, Nb, and Mo, E is at least one element selected from the group consisting of P, F, and S, &#x2212;0.05&#x2264;z&#x2264;0.1, 0&#x2264;a&#x2264;0.05, 0&#x2264;b&#x2264;0.05, 0.3&#x2264;&#x3b1;&#x2264;0.9, 0.05&#x2264;&#x3b2;&#x2264;0.4, and 0.05&#x2264;&#x3b3;&#x2264;0.4.) (The L3/L2 intensity ratio of Ni is the oxidation number of Ni measured by electronic energy loss spectroscopy (EELS).).

Positive electrode active material for lithium secondary battery, method for preparing same and lithium secondary battery comprising same

There are provided a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The cathode active material for a lithium secondary battery includes: a compound reversibly intercalating and deintercalating lithium; and a coating layer positioned on at least a portion of a surface of the compound, wherein the coating layer is a composite coating layer containing LiPOand further containing a lithium metal oxide, a metal oxide, and/or a combination thereof, the lithium metal oxide or the metal oxide containing Zr.

Cathode active material for lithium secondary battery, method of preparing the same, and lithium secondary battery containing the same

The present invention relates to a nickel-based composite oxide for a lithium secondary battery, and a lithium secondary battery including the same, and provides a nickel-based composite oxide for a lithium secondary battery, which comprises: a core part; and at least one tunnel connected from the inside of the core part to the outside thereof, wherein the tunnel has a diameter of 100 nm or larger, and the composite oxide further comprises coating layers located inside the tunnel and outside the core part.

Nickel-based composite oxide for lithium secondary battery, and lithium secondary battery including same

There are provided a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The cathode active material for a lithium secondary battery includes: a core made of a compound reversibly intercalating and deintercalating lithium; and a coating layer positioned on at least a portion of a surface of the compound, wherein the coating layer is a composite coating layer containing LiPOand LiF, and further containing a lithium metal compound, a metal oxide, a metal fluoride compound, and/or a combination thereof, and the core is doped with fluorine.

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Daegu, South Korea

Ji Sun An