Lg Chem, Ltd

Yongsu Choi

Jeong-Ju Cho

Jisang Yu

Hochun Lee

Jonghwan Kim

Ra Young Hwang

Joomi Jeon

Disclosed is a lithium secondary battery comprising a cathode including a lithium-containing transition metal oxide, an anode including a carbon-based material, and a non-aqueous electrolyte with addition of a compound (A) and a compound (B) of formula (1). Incorporation of the compounds (A) and (B) into the electrolyte significantly improves the high-temperature performance and cycle life characteristics of the battery.

Lithium secondary battery of improved high-temperature cycle life characteristics

Disclosed is a lithium secondary battery comprising a cathode including a lithium-containing transition metal oxide, an anode including a carbon-based material, and a non-aqueous electrolyte with addition of a compound of formula (1). Incorporation of the compound (1) into the electrolyte significantly improves the high-temperature performance and cycle life characteristics of the battery.

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Chungcheongbuk-do, South Korea

Yongsu Choi