Lg Chem, Ltd

Lg Energy Solution, Ltd.

Jin Hyung Lim

Wang Mo Jung

Dong Hun Lee

Ho Suk Shin

Joo Hong Jin

Hyun Jin Oh

Seok Koo Kim

Sung Kyun Chang

Song Taek Oh

Sin Young Park

Geun Chang Chung

Sun Kyu Kim

Jung Seok Choi

Sin Kyu Kim

Sun Jung Hwang

Keun Wan An

KeunWan An

The present invention relates to a battery cell in which a foil functioning as a busbar is adopted in the battery cell, and thus, the resistance of the battery cell is reduced to increase the output of the battery cell.

Battery cell to which bus bar is applied

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

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

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

Provided are a positive electrode active material for improving an output and a lithium secondary battery including the same. Particularly, graphite and conductive carbon which have shapes and sizes different from each other, may be simultaneously coated on a mixed positive electrode material of a 3-component system lithium-containing metal oxide having a layered structure and expressed as following Chemical Formula 1 and LiFePOhaving an olivine structure as an conductive material to improve high resistance occurrence and conductivity reduction phenomenon of a 3-component system lithium metal oxide due to a difference between particle sizes and surface areas of the 3-component system lithium-containing metal oxide and LiFePOolivine.LiNiCoMnO, 0&#x2266;&#x3c;0.5, 0&#x3c;&#x3c;1, 0&#x3c;&#x3c;0.5&#x2003;&#x2003;[Chemical formula 1]

Lithium secondary battery positive electrode material for improving output characteristics and lithium secondary battery including the same

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Daejeon, South Korea

Jin Hyung Lim