Lg Chem, Ltd

Lg Energy Solution, Ltd.

Jungseok Choi

Song Taek Oh

Ji Hye Park

Su Rim Lee

Hyeokmoo Lee

Jae Hyun Lee

Jeonggil Kim

An electrode assembly according to an exemplary embodiment of the present invention includes a cathode plate and an anode plate; a separator disposed between the cathode plate and the anode plate; and coating layers disposed between the separator and the cathode plate and between the separator and the anode plate. The separator includes a first portion that is covered with the coating layer, and a second portion that exposes a surface facing the cathode plate and a surface facing the anode plate, and at least one of the cathode plate and the anode plate includes a positive temperature coefficient (PTC) material.

Electrode assembly and method of stabilizing secondary battery

Disclosed are a cathode active material for high voltage lithium secondary batteries and a lithium secondary battery including the same and, more particularly, the present invention relates to a cathode active material for lithium secondary batteries that includes a lithium transition metal oxide having a lithium molar fraction of greater than 1, containing a relative excess of nickel, and having a composition represented by Formula 1 below, wherein the lithium transition metal oxide has a LiMnO-like structure phase:LiNiCoMnMOA&#x2003;&#x2003;(1)

Cathode active material for high voltage lithium secondary battery and lithium secondary battery including the same

Disclosed are a cathode active material for lithium secondary batteries and a lithium secondary battery including the same and, more particularly, the present invention relates to a cathode active material for lithium secondary batteries that includes a mixture of an overlithiated transition metal oxide represented by Formula 1 below and a lithium composite transition metal oxide represented by Formula 2 below:LiNiMnCoMOA&#x2003;&#x2003;(1)LiNiMnCoM'OA&#x2032;&#x2003;&#x2003;(2)

Cathode active material for lithium secondary battery and lithium secondary battery including the same

Growing community of inventors

Daejeon, South Korea

Jungseok Choi