Lg Chem, Ltd

Lg Energy Solution, Ltd.

Wang-Mo Jung

Sung-Bin Park

Chi-Ho Jo

Hyuck Hur

Ji-Young Park

Min Kwak

Bo-Ram Lee

Sang-Min Park

In-Sun Yoo

Dae-Hong Kim

Jung-Min Han

Bo-Na Kim

Myung-Ki Lee

Min-Suk Kang

Sang-Wook Lee

Woo-Yeon Kong

Sun-Sik Shin

Hye-Lim Jeon

Geun-Gi Min

Dae-Jin Lee

Kang-Joon Park

Joong-Yeop Do

Gi-Beom Han

Eun-Sol Lho

A negative electrode active material for a secondary battery and a lithium secondary battery including the same. The negative electrode active material for a secondary battery, includes lithium titanium-based composite particles comprising: a lithium titanium oxide represented by LiTiO, wherein x, y and z satisfy 0.1≤x≤4, 1≤y≤5 and 2≤z≤12, Zr doped into the lithium titanium oxide; and an aluminum and sulfur containing compound coated on a surface of the lithium titanium oxide. The aluminum and sulfur containing compound is present in an amount of 0.4 mM to 0.9 mM based on 1M lithium titanium oxide.

Negative electrode active material and lithium secondary battery comprising the same

A negative electrode active material for a secondary battery, including lithium titanium-based composite particles comprising: a lithium titanium oxide represented by LiTiO, wherein x, y and z satisfy 0.1≤x≤4, 1≤y≤5 and 2≤z≤12; Zr doped into the lithium titanium oxide; and an aluminum and sulfur containing compound coated on a surface of the lithium titanium oxide. The lithium titanium-based composite particles include at least one of primary particles or secondary particles formed by agglomeration of the primary particles, and an average particle size of the primary particles of the lithium titanium-based composite particles is in a range of 550 nm to 1.1 μm.

A negative electrode active material including lithium titanium oxide particles, wherein the lithium titanium oxide particles have a Na content of 50 ppm-300 ppm, a K content of 500 ppm-2400 ppm and a crystallite size of 100-200 nm, and a lithium secondary battery including the same.

Negative electrode active material having high output characteristics and lithium secondary battery including the same

Disclosed are a negative electrode active material including lithium titanium oxide particles, wherein the lithium titanium oxide particles have an average particle diameter (D) of 0.5-9 &#x3bc;m, a specific surface area of 3-7 m/g, and a pellet density of 1.7 g/cc or more under a pressure of 64 MPa, and a lithium secondary battery including the same.

The present disclosure relates to a cathode active material for a lithium secondary battery with improved rate characteristics in which a spinel surface structure is formed by fluorine coating on a surface of layered lithium nickel-manganese-cobalt cathode active material and a method for manufacturing the same, and according to the present disclosure, there is provided a lithium secondary battery with improved rate characteristics that may be charged to a capacity close to a full charge in a short time when compared to a related art and thus is suitable for high capacity of a secondary battery.

Cathode active material for lithium secondary battery and method for manufacturing the same

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Daejeon, South Korea

Wang-Mo Jung