Abstract:
An electrolyte for a lithium secondary battery, the electrolyte including: an organic ester compound represented by Formula 1; an organic solvent; and a lithium salt: wherein, in Formula 1, R1, R2, and R3 are the same or different, and are each independently a group represented by Formula 2: wherein, in Formula 2, R′ is a C1-C10 alkyl group or a C3-C10 cycloalkyl group.
Abstract:
A composite negative active material including a piezoelectric material; and a negative active material. Also a negative electrode including the composite negative active material, and a lithium secondary battery including the negative electrode.
Abstract:
A lithium secondary battery includes a positive electrode; a negative electrode; and an electrolyte disposed between the positive electrode and the negative electrode, wherein the positive electrode includes a positive active material represented by Formula 1, and the electrolyte includes a lithium salt; a non-aqueous solvent; and a phosphite compound represented by Formula 2, wherein the phosphite compound is present in amount of about 0.1 wt % to about 5 wt % based on a total weight of the electrolyte: LixNiyM1-yO2-zAz Formula 1 wherein, in Formula 1, 0.9≤x≤1.2, 0.7≤y≤0.98, and 0≤z
Abstract:
A nonaqueous electrolyte for a lithium secondary battery, the nonaqueous electrolyte including: a fluorine-containing lithium salt, an organic solvent, and an organosilicon compound represented by Formula 1: wherein, in Formula 1, R1 to R3 may be each independently a C1-C10 alkyl group. Also a lithium secondary battery including the nonaqueous electrolyte.
Abstract:
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, and a sum of a1 and a11 is 5, and a sum of a2 and a12 is 5.
Abstract:
A composite negative active material including a piezoelectric material; and a negative active material. Also a negative electrode including the composite negative active material, and a lithium secondary battery including the negative electrode.
Abstract:
An electrolyte for a lithium secondary battery, the electrolyte including: a compound represented by Formula 1; a lithium salt; and an organic solvent, wherein an amount of the compound represented by Formula 1 is less than about 3.0 weight percent, based on a total weight of the electrolyte: wherein, in Formula 1, R1 to R15 are each independently selected from hydrogen, fluorine, a C1-C10 alkyl group, and a C6-C10 aryl group.
Abstract:
A lithium secondary battery includes a positive electrode; a negative electrode; and an electrolyte disposed between the positive electrode and the negative electrode, wherein the positive electrode includes a positive active material represented by Formula 1, and the electrolyte includes a lithium salt; a non-aqueous solvent; and a phosphite compound represented by Formula 2, wherein the phosphite compound is present in amount of about 0.1 wt % to about 5 wt % based on a total weight of the electrolyte: LixNiyM1-yO2-zAz Formula 1 wherein, in Formula 1, 0.9≦x≦1.2, 0.7≦y≦0.98, and 0≦z
Abstract:
A nonaqueous electrolyte for a lithium secondary battery, the nonaqueous electrolyte including: a fluorine-containing lithium salt, an organic solvent, and an organosilicon compound represented by Formula 1: wherein, in Formula 1, R1 to R6 are each independently a C1-C10 alkyl group or a C1-C10 alkoxy group. Also a lithium secondary battery including the nonaqueous electrolyte.
Abstract:
A nonaqueous electrolyte for a lithium secondary battery, the nonaqueous electrolyte including a fluorine-containing lithium salt, an organic solvent, and an organosilicon compound represented by Formula 1: wherein, in Formula 1, R1 to R3 are independently a C1-C10 alkyl group, and n is an integer selected from 1 to 10. Also a lithium secondary battery including the nonaqueous electrolyte.