Lg Chem, Ltd

Jun Yong Jeong

Duk Hyun Ryu

Sung Kyun Chang

Seung Tae Hong

Hyeong Jin Kim

Ho Chun Lee

Eun Young Goh

Hyung Keun Lee

Jin Hee Yeon

Jae Hyun Lee

Soon Ho Ahn

Min Chul Jang

Han Ho Lee

Disclosed is a lithium secondary battery, which is low in capacity loss after overdischarge, having excellent capacity restorability after overdischarge and shows an effect of preventing a battery from swelling at a high temperature.

Cathode active material for lithium secondary battery

A secondary battery comprising a battery package which encloses the outer perimeter of the secondary battery and covers the entire outer surface of positive and negative electrodes and a portion of each terminal of the positive and negative electrodes, wherein the battery package is formed of a laminate film comprising an outer polymer layer, an inner aluminum layer and an adhesive layer formed on a portion of the inner surface of the aluminum layer, the aluminum layer of the battery package being electrically connected with either of the positive and negative is provided. Alternatively, at least one electrically conductive metal foil on at least one of the outer upper and lower surfaces of the battery package is provided.

Secondary battery with an improved safety

Disclosed is a method for regulating terminal voltage of a cathode during overdischarge. Also disclosed is a lithium secondary battery, which is low in capacity loss after overdischarge, having excellent capacity restorability after overdischarge and shows an effect of preventing a battery from swelling at a high temperature.

Method for regulating terminal voltage of cathode during overdischarge and cathode active material for lithium secondary battery

Growing community of inventors

Daejeon, South Korea

Jun Yong Jeong