| abstract |
The present invention relates to a lithium secondary battery using an ionic liquid as an additive of an electrolyte in a flame retardant additive for batteries, and more particularly, to a lithium secondary battery including a positive electrode, a negative electrode, and an electrolyte, and a piperidinium TFSI (trifluoromethan sulfonyl). imide) Lithium secondary battery using piperidinium TFSI as an electrolyte additive characterized by using an ionic liquid as an electrolyte additive. As a result, piperidinium (TFRI) trifluoromethan sulfonyl imide (TFSI) is used as an electrolyte additive to reduce battery ignition, improve battery performance, improve battery reliability, and largely address doubts about the safety of large-capacity batteries. Therefore, there is an advantage that can accelerate the commercialization time of large capacity batteries. |