abstract |
The present invention relates to an electrolyte solution containing a new additive and a lithium secondary battery comprising the same, in particular, a battery having a large capacity, including an electrolyte solution containing a compound represented by the formula (1), excellent life characteristics and battery performance At the same time, the present invention relates to a lithium secondary battery with markedly improved safety during overcharging.n n n [Formula 1]n n n n n n n n In the formula of Formula 1,n n n R is an alkyl group, benzyl group, phenyl group, or acetyl group. |