Abstract: A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are described herein. Specifically, the non-aqueous electrolyte solution for a lithium secondary battery includes a lithium salt, an organic solvent and a compound represented by Formula 1 to form a robust SEI film, thereby improving battery performance: Wherein R1 to R3 are described herein.

Abstract: An electrolyte additive comprising a compound represented by Formula 1 below forms a coating film on an electrode surface in the activation of a secondary battery, thereby the generation of a large amount of gas under a high temperature condition can be prevented, and a cell OCV drop and a decrease in capacity retention rate, which are caused by elution of metal ions from an electrode, can be effectively prevented, resulting in effective improvement in durability, performance and high-temperature safety of the battery, wherein R1, R2, and M are described herein.

Abstract: An energy storage module may include first and second energy storage devices each including: an electrode assembly; an external member accommodating the electrode assembly therein; and electrode leads joined to electrodes provided in the electrode assembly, in which the first and second energy storage devices are stacked in a vertical direction V so that a positive electrode lead of the first energy storage device and a negative electrode lead of the second energy storage device are electrically connected to each other.