Bis(phenyl) methanedisulfonate-based additive and lithium secondary battery comprising the same

• Main Authors: Seo, Jinah, Koh, Myongchun, Park, Eunha, Kang, Yoonsok
• Format: Patent
• Language: English
• Published: 15.06.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

An electrolyte includes: a lithium salt; a non-aqueous solvent; and a disulfonate compound represented by Formula 1:wherein, in Formula 1, R1 and R2 are each independently a fluorine, a cyano group, a nitro group, or a methyl group substituted with at least one fluorine,R11 to R14 are each independently a hydrogen, a deuterium, a fluorine, a hydroxyl group, a cyano group, a nitro group, a substituted or unsubstituted C1-C10 alkyl group, a substituted or unsubstituted C2-C10 alkenyl group, or a substituted or unsubstituted C2-C10 alkynyl group,a1 and a2 are each independently an integer of 1 to 5,a11 and a12 are each independently an integer of 0 to 4, anda sum of a1 and a11 is 5, and a sum of a2 and a12 is 5.