Lg Chem, Ltd

Lg Energy Solution, Ltd.

Ho Suk Shin

Sun Sik Shin

Sin Young Park

Jens M Paulsen

Wang Mo Jung

Sang Min Park

Hong Kyu Park

Hong-Kyu Park

Sung Kyun Chang

Byung Chun Park

Seong Hoon Kang

Dong Hun Lee

Geungi Min

Minsuk Kang

Min Kyu You

Hyun Jin Oh

Sung-Kyun Chang

Bo Ram Lee

Sinyoung Park

Joo Hong Jin

Jin Hyung Lim

In Sung Uhm

Seung Tae Hong

Hye Lim Jeon

Jung Min Han

Youngsun Choi

Won Tae Kim

Hyo-Shik Kil

Won Seok Chang

Jong Yeol Yu

Jinhyung Lim

Seoung Chul Ha

Young Geun Lim

The present invention relates to a method of preparing a positive electrode active material precursor for a lithium secondary battery in which particle size uniformity and productivity may be improved by using three reactors, a method of preparing a positive electrode active material for a lithium secondary battery by using the above-prepared positive electrode active material precursor for a lithium secondary battery, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the above-prepared positive electrode active material for a lithium secondary battery.

Method of preparing positive electrode active material precursor for lithium secondary battery

Disclosed are a transition metal precursor for preparation of a lithium transition metal oxide, in which a ratio of tap density of the precursor to average particle diameter D50 of the precursor satisfies the condition represented by Equation 1 below, and a lithium transition metal oxide prepared using the same. 

Transition metal precursor having low tap density and lithium transition metal oxide having high particle strength

The present invention provides a battery cell including: an electrode assembly configured of a positive electrode, a negative electrode, and a separation membrane; and a battery case in which a sealing surplus part is formed at an external circumference in a state that the electrode assembly is built in a receiving unit, wherein the battery case is formed of a sheet-shaped structure having a first surface and a second surface opposite to the first surface, an electrode terminal of the sheet-shaped structure is protruded through one side sealing surplus part of the battery case, and the electrode terminal is in contact with one surface or the other surface opposite to the one surface of the sealing surplus part in a state that the electrode terminal is bent in the first surface direction or the second surface direction of the battery case at the protrude part.

Pouch type battery cell including electrode lead of bending structure

The present invention provides a precursor for the production of a positive electrode active material for a secondary battery comprising: a core composed of transition metal hydroxides including nickel(Ni) and manganese(Mn) and further including anions other than hydroxyl groups(OH), or transition metal hydroxides including nickel(Ni), manganese(Mn) and cobalt(Co) and further including anions other than hydroxyl groups(OH); and a shell composed of transition metal hydroxides including cobalt(Co) and further including anions other than hydroxyl groups(OH), and a positive electrode active material for lithium secondary battery produced using the same.

Precursor for the production of positive electrode active material comprising metal oxides having multilayered structure and positive electrode active material for lithium secondary battery produced using the same

The present invention provides a positive electrode active material for a lithium secondary battery having a core-shell structure which comprises: a core composed of lithium transition metal oxides including nickel(Ni), manganese(Mn) and cobalt(Co); and a shell composed of lithium transition metal oxides including cobalt(Co), wherein an inorganic material layer is further formed by coating on the surface of the shell.

Positive electrode active material for lithium secondary battery comprising lithium metal oxides having multilayered structure and positive electrode comprising the same

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

The present disclosure relates to a positive electrode active material which reduces lithium by-products and improves structural stability and includes a lithium-nickel based transition metal composite oxide in which an alkaline earth metal having oxidation number of +2 is doped and a phosphate coated layer formed on the outer surface of the composite oxide. Accordingly, a second battery including the positive electrode active material has excellent capacity characteristics, and also improves structural stability during charging/discharging and prevents swelling, thereby being capable of exhibiting excellent life characteristics. Therefore, the present invention may be easily applied to industry in need thereof, and particularly to electric vehicles industry requiring high capacity and long-term life characteristics.

Lithium-nickel based positive electrode active material, method of preparing the same, and lithium secondary battery including the same

The present invention provides a precursor for the production of positive electrode active material for a secondary battery comprising: a core containing transition metal hydroxides comprising nickel (Ni) and manganese (Mn), or transition metal hydroxides comprising nickel (Ni), manganese (Mn) and cobalt (Co); and a shell containing transition metal hydroxides comprising cobalt (Co), and a positive electrode active material produced using the same.

Provided are a method of preparing a cathode active material including coating a surface of a lithium transition metal oxide with a lithium boron oxide by dry mixing the lithium transition metal oxide and a boron-containing compound and performing a heat treatment, and a cathode active material prepared thereby. A method of preparing a cathode active material according to an embodiment of the present invention may easily transform lithium impurities present in a lithium transition metal oxide into a structurally stable lithium boron oxide by performing a heat treatment near the melting point of a boron-containing compound. Also, a coating layer may be formed in which the lithium boron oxide is uniformly coated in an amount proportional to the used amount of the boron-containing compound even at a low heat treatment temperature.

Cathode active material for lithium secondary battery

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

Manufacturing method of cathode active material, and cathode active material for lithium secondary battery manufactured thereby

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 is a transition metal precursor used for preparation of lithium composite transition metal oxide, the transition metal precursor comprising a composite transition metal compound represented by the following Formula 1:M(OH)A&#x2003;&#x2003;(1) The transition metal precursor according to the present invention contains a specific anion. A lithium composite transition metal oxide prepared using the transition metal precursor comprises the anion homogeneously present on the surface and inside thereof, and a secondary battery based on the lithium composite transition metal oxide thus exerts superior power and lifespan characteristics, and high charge and discharge efficiency.

Precursor for preparing lithium composite transition metal oxide and method for preparing the same

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

Ho Suk Shin