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 lithium secondary battery including a positive electrode including a positive active material represented by Formula 1; a negative electrode; and an electrolyte disposed between the positive electrode and the negative electrode, the electrolyte including a lithium salt; a nonaqueous solvent; and a cyclic compound represented by Formula 2, wherein an amount of the cyclic compound is less than about 2 percent by weight (wt %) based on a total weight of the electrolyte, wherein, in Formulae 1 and 2, 0.9≤x≤1.2, 0.7≤y≤0.95, 0≤z
Abstract:
An electrolyte for a secondary battery includes a non-aqueous solvent; a lithium salt; and a heterocyclic compound represented by Formula 1: wherein, in Formula 1, R1 and R2 are each independently selected from hydrogen, a halogen group, a cyano group, a hydroxy group, a nitro group, —C(═O)Ra, —C(═O)ORa, —OCO(ORa), —C═N(Ra), a substituted or unsubstituted C1-C20 alkyl group, and a combination thereof, wherein Ra is selected from hydrogen and a C1-C10 alkyl group, and, provided that at least one selected from R1 and R2 is selected from a halogen group, a cyano group, a hydroxy group, a nitro group, —C(═O)Ra, —C(═O)ORa, a substituted or unsubstituted C1-C20 alkyl group, and a combination thereof.
Abstract:
An electrolyte for a secondary battery includes a non-aqueous solvent; a lithium salt; and a heterocyclic compound represented by Formula 1: wherein, in Formula 1, R1 and R2 are each independently selected from hydrogen, a halogen group, a cyano group, a hydroxy group, a nitro group, —C(═O)Ra, —C(═O)ORa, —OCO(ORa), —C═N(Ra), a substituted or unsubstituted C1-C20 alkyl group, and a combination thereof, wherein Ra is selected from hydrogen and a C1-C10 alkyl group, and, provided that at least one selected from R1 and R2 is selected from a halogen group, a cyano group, a hydroxy group, a nitro group, —C(═O)Ra, —C(═O)ORa, a substituted or unsubstituted C1-C20 alkyl group, and a combination thereof.
Abstract:
A refrigerator includes: a main body; a storage room formed inside the main body; an ice maker fixed to the main body, and inside the storage room; and a drawer accommodated in the storage room and configured to be withdrawable in a front direction with respect to the main body to open or close the storage room, wherein the drawer includes: a basket including an ice-making room formed therein and below the ice maker and a top portion opened; and a cover assembly in front of the ice maker and configured to cover the opened top portion of the ice-making room together with the ice maker, the cover assembly comprising a plurality of covers slidingly coupled with the basket and extendable when the basket is pulled out so that the plurality of covers changes in length along the front direction in which the basket is pulled out.
Abstract:
A refrigerator includes an inner case configured to accommodate a refrigerated item therein, an outer case configured to surround the inner case, a heat insulator configured to be at least partially disposed between the inner case and the outer case, and a reinforcing member disposed between the inner case and the outer case to support the outer case and having a fastening part to couple the refrigerator with another refrigerator installed adjacent to the refrigerator by using a connection member, and the fastening part coupled to the connection member to enable alignment between the refrigerator and the another refrigerator.
Abstract:
An electrolyte for a lithium secondary battery, the electrolyte including: a lithium salt, an organic solvent, and an organic fluorinated ether compound represented by Formula 1: CH3—CH2—O—CF2—CHF—R1 Formula 1 wherein, in Formula 1, R1 is a C1-C10 alkyl group, a C3-C10 cycloalkyl group, a C1-C10 fluorinated alkyl group, or a C3-C10 fluorinated cycloalkyl group.
Abstract:
An electrolyte for a lithium secondary battery, the electrolyte including: a lithium salt, an organic solvent, and an organic fluorinated ether compound represented by Formula 1: CF3—R1—O—CF2—CHF—(CH2)n—CF3 Formula 1 wherein, in Formula 1, R1 is a C1-C10 alkylene group, a C3-C10 cycloalkylene group, a C1-C10 fluorinated alkylene group, or a C3-C10 fluorinated cycloalkylene group; and n is an integer of 0 to 10.
Abstract:
A lithium metal battery including: a lithium negative electrode including lithium metal; a positive electrode; and an electrolyte interposed between the lithium negative electrode and the positive electrode, wherein the electrolyte contains non-fluorine substituted ether, which is capable of solvating lithium ions, a fluorine substituted ether represented by the following Formula 1, and a lithium salt, wherein an amount of the fluorine substituted ether represented by Formula 1 is greater than an amount of the non-fluorine substituted ether, R—{O(CH2)a}b—CH2—O—CnF2nH Formula 1 wherein R is —CmF2mH or —CmF2m+1, n is an integer of 2 or greater, m is an integer of 1 or greater, a is an integer of 1 or 2, and b is 0 or 1.
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.