Lg Chem, Ltd

Seung Jae Yoon

Young Geun Choi

Jong Mo Jung

Jonghyun Chae

Geun Chang Chung

Yourim Yoon

Chul Haeng Lee

Young Cheol Choi

Jong Hyun Chae

You Rim Yoon

Joo Young Choi

Hyun Kyung Do

Jae Kyung Kim

Disclosed is a lithium secondary battery including: (i) a cathode active material including a lithium metal phosphate according to Formula 1 below; (ii) an anode active material including amorphous carbon; and (iii) an electrolyte for lithium secondary batteries including a lithium salt and an ether based solvent, wherein propylene carbonate (PC) is included in an amount of 1 wt % to 60 wt % in the electrolyte for lithium secondary batteries, based on the total weight of the electrolyte,LiM(PO)X&#x2003;&#x2003;(1)

Lithium secondary battery

Disclosed are an electrolyte for lithium secondary batteries including 10 wt % to 90 wt % of an ester based solvent and 10 wt % to 90 wt % of a carbonate based solvent with respect to the total weight of a non-aqueous solvent, and a lithium secondary battery including the same.

Electrolyte for lithium secondary batteries and lithium secondary battery including the same

Disclosed is a lithium secondary battery including (i) a cathode active material including a lithium metal phosphate according to Formula 1 below; and (ii) an anode active material including amorphous carbon,LiM(PO)X&#x2003;&#x2003;(1)

Disclosed are an electrolyte for lithium secondary batteries including a lithium salt and a non-aqueous solvent, in which the non-aqueous solvent includes an ether based solvent and a glyme based solvent and a ratio of the ether based solvent to the glyme based solvent is 20:80 to 60:40 based on the total volume of the non-aqueous solvent, and a secondary battery including the same.

Disclosed is a lithium secondary battery including (i) a cathode active material including a lithium metal phosphate according to Formula 1 below, (ii) an anode active material including amorphous carbon, and (iii) an electrolyte for lithium secondary batteries including a lithium salt and an ether-based solvent,LiM(PO)X&#x2003;&#x2003;(1)

Disclosed is an electrolyte for lithium secondary batteries including a lithium salt and a non-aqueous solvent, in which a silane based material is included in an amount of 0.1 to 20 wt % based on the total weight of the electrolyte, and a lithium secondary battery including the same.

Provided are a method of preparing an electrode assembly, in which both sides of a single current collector are coated to form an anode and a cathode, and the current collector is then bent into a vertical sectional zigzag shape and integrated in a state of disposing a separator at interfaces between facing electrode patterns, an electrode assembly prepared by the above method, and a secondary battery comprising the electrode assembly.

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Daejeon, South Korea

Seung Jae Yoon