Lg Chem, Ltd

Lg Energy Solution, Ltd.

Minsuk Kang

Wang Mo Jung

Sang Min Park

Byung Chun Park

Seong Hoon Kang

Ho Suk Shin

Geungi Min

Sang Wook Lee

Sora Baek

Joon Ho Shin

Sang Beom Lee

Sung Ho Lee

Chul Han Park

Hyelim Jeon

Eunsol Lho

Donghun Lee

Sangeun Kim

Seul Ki Kim

The present disclosure relates to a cathode additive of a lithium secondary battery, and a method for preparing the same. The cathode additive exhibits high irreversible capacity, and may be effectively applied to a battery using an anode material having high energy density. In one embodiment, the cathode additive includes a compound represented by the following Chemical Formula 1:y(LiNiMO)-z(LiCoMO) &#x2003;&#x2003;[Chemical Formula 1]

Additive for cathode, method for preparing the same, cathode including the same, and lithium secondary battery including the same

A method of decomposing a phenol by-product produced in a phenol preparation process, in which acetophenone separated from a distillation column is mixed with tar separated and collected in a decomposition reactor, thereby significantly decreasing viscosity of tar. The decomposition method according to the present invention allows tar to have sufficient viscosity for flowability even at room temperature, whereby transfer and storage of tar may be more smoothly done without using any heating device for transfer of tar.

Method of decomposing by-product in phenol preparation process

There are provided a method of preparing an irreversible additive in which a content of a Li-based by-product such as unreacted lithium oxide generated in a process of preparing lithium nickel-based oxide is decreased, which may significantly reduce gelation of a composition including the irreversible additive, a cathode material including the irreversible additive prepared by the same, and a lithium secondary battery including the cathode material.

Method of preparing irreversible additive included in cathode material for lithium secondary battery, cathode material including irreversible additive prepared by the same, and lithium secondary battery including cathode material

The present disclosure provides a preparing method of a positive electrode additive for a lithium secondary battery capable of reducing the amount of Li-based byproduct and unreacted lithium oxide generated in a preparing process, thereby significantly reducing the amount of gas generated when the electrode is operated.

Method for preparing positive electrode additives of lithium secondary battery

Disclosed herein is a high voltage cathode active material and a method for preparing the same. The cathode active material includes particles of a spinel-type compound having a composition represented by Formula (1) and a carbon-based material present on surfaces of the particles of the spinel-type compound:LiMMnOA&#x2003;&#x2003;(1)

High voltage positive active material and method for preparing the same

Disclosed are a cathode active material including a lithium transition metal oxide based on at least one transition metal selected from the group consisting of Ni, Mn and Co, wherein at least one hetero element selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Bi, Zn and Zr is located at a surface portion of or inside the lithium transition metal oxide, and a secondary battery including the same. The cathode active material according to the present invention includes predetermined hetero elements at a surface thereof and therein, and, as such, a secondary battery based on the cathode active material may exhibit excellent high-speed charge characteristics and lifespan characteristics.

Cathode active material and lithium secondary battery including the same

Disclosed are a transition metal precursor for preparing a lithium composite transition metal oxide, a method for preparing the precursor, and a lithium composite transition metal oxide. The transition metal precursor includes a composite transition metal compound having a composition represented by Formula (1) and a Mn content of 60 to 85 mol %:NiMMn(OH)&#x2003;&#x2003;(1)

Precursor for preparing lithium composite transition metal oxide, method for preparing the precursor, and lithium composite transition metal oxide

Disclosed are a cathode active material for high voltage and a lithium secondary battery including the same. More particularly, a cathode active material including spinel-type compound particles having a composition represented by Formula 1 below;LiMMnOA&#x2003;&#x2003;(1) where a, x and z are defined in a specification of the present invention, and metal oxides or metal hydroxides present on surfaces of the spinel-type compound particles, and a lithium secondary battery including the same.

High voltage positive active material and lithium secondary battery comprising the same

Disclosed is a precursor for preparing a lithium composite transition metal oxide. More particularly, a transition metal precursor, including a composite transition metal compound represented by Formula 1 below, used to prepare a lithium transition metal oxide:NiMMn(O)&#x2003;&#x2003;(1)

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Daejeon, South Korea

Minsuk Kang