Samsung Sdi Co., Inc.

In-Tae Mun

Sae-Weon Roh

Jong-Hwa Lee

Yong-Chul Park

Duck-Chul Hwang

Jae-Yul Ryu

So-Hyun Hur

Jeom-Soo Kim

Euy-Young Jung

Eui-Hwan Song

An electrolyte for a rechargeable lithium battery includes a non-aqueous organic solvent; a lithium salt; and an additive including vinylene carbonate, fluoroethylene carbonate, and a nitrile-based compound represented by Formula 1: 

Electrolyte for rechargeable lithium battery and rechargeable lithium battery

A rechargeable lithium battery is provided that includes a negative electrode including a negative active material, a positive electrode including a positive active material, and an electrolyte. The electrolyte includes a lithium salt and a non-aqueous organic solvent including from about 1 to about 20 volume % of a cyclic carbonate and from about 80 to about 99 volume % of a linear carbonate. The positive electrode has an active mass density of about 3.7 g/cc or greater. The rechargeable lithium battery shows improved cycle-life and storage characteristics at high temperatures, and good high rate characteristics.

Rechargeable lithium battery

An electrolyte for a rechargeable lithium battery includes a non-aqueous organic solvent; a lithium salt; and an additive including vinylene carbonate, fluoroethylene carbonate, and a nitrile-based compound represented by Formula 1:  wherein n ranges from 1 to 12 and Rand Rare independently a halogen, a hydrogen, or an alkyl group. Further, the alkyl group can be CH, in which m ranges from 1 to 10. The electrolyte for a rechargeable lithium battery improves storage stability of the rechargeable lithium battery at a high temperature. And, a rechargeable lithium battery including the electrolyte has improved storage stability.

Electrolyte including an additive for rechargeable lithium battery and rechargeable lithium battery including same

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Yongin-si, South Korea

In-Tae Mun