Lg Chem, Ltd

Lg Energy Solution, Ltd.

Industry-University Cooperation Foundation Hanyang University

Seung-Hyun Chung

Je-Young Kim

Yo-Han Kwon

Hye-Ran Jung

Han-su Kim

Bum-Young Jung

Se-Woo Yang

Eun-Suk Park

Jeong-Gil Kim

A-Young Kim

Ju-Hye Song

Ho-Jae Jung

A lithium secondary battery including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a sulfur dioxide-based inorganic electrolyte solution. The negative electrode includes a negative electrode active material which includes a carbon material having a coating comprising titanium oxide (TiO, 0<x<2). The titanium oxide improves the wettability of the carbon material negative electrode to the inorganic electrolyte solution and the charge transfer reaction on the surface and minimizes the interfacial resistance of the carbon material/inorganic electrolyte solution, thereby improving the high-rate charge/discharge characteristics.

Lithium secondary battery comprising inorganic electrolyte solution

The present invention relates to a cable-type secondary battery which can be freely transformed, and more specifically, to a cable-type secondary battery having improved flexibility of the battery by preventing wrinkling, which may occur on a thin metal layer included in packaging. According to the present invention, the flexibility of an electrode can be drastically improved by introducing a support layer on at least one surface of a sheet-type external electrode, and the flexibility of the battery can be improved by forming the support layer, which is the outermost layer of the external electrode, and a polymer resin layer inside the packaging from the same material, and by preventing winkling on the thin metal layer included in the packaging by mutually coupling the support layer and the polymer resin layer.

Cable-type secondary battery

Growing community of inventors

Daejeon, South Korea

Seung-Hyun Chung