Abstract: A non-aqueous electrolyte solution and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution includes a lithium salt, an organic solvent, and a compound represented by Formula 1 as an additive. The compound has an excellent effect of removing a decomposition product generated from the lithium salt in the electrolyte solution. In some embodiments, a lithium secondary battery including the non-aqueous electrolyte solution has improved high-temperature storage characteristics by alleviating self-discharge.

Abstract: The present invention relates to a gel polymer electrolyte composition for a lithium secondary battery and a secondary battery including the same, and particularly, to a gel polymer electrolyte composition for a lithium secondary battery, which includes a lithium salt, a non-aqueous organic solvent, an ionic liquid, an oligomer having a specific structure, a heat stabilizer, and a polymerization initiator, and a lithium secondary battery in which high-temperature stability is improved by including the same.

Abstract: The present invention relates to an electrolyte for a lithium secondary battery and a lithium secondary battery including the same, the electrolyte including a lithium salt, an additive containing a compound represented by Formula 1, and an organic solvent.

Abstract: A lithium secondary battery is disclosed herein. In some embodiments, a lithium battery includes a positive electrode having a lithium-nickel-cobalt-manganese-based electrode active material wherein nickel has a content of 80 mol % or greater, relative to the other transition metals, a negative electrode including a silicon-based negative electrode active material, a separator, and a non-aqueous electrolyte solution including a non-aqueous organic solvent and a lithium salt, the lithium salt being contained in a concentration of 1.8 M to 5 M, and wherein the lithium salt includes LiPF6 and a lithium bis(fluorosulfonyl)imide.

Abstract: The present invention relates to a composition for a gel polymer electrolyte, in which liquid injection characteristics at room temperature and in an oxygen atmosphere are improved by including a non-fluoride oxygen scavenger as well as a polymerizable oligomer having a polymerizable substituent, and a lithium secondary battery in which capacity retention with cycles is excellent by including a gel polymer electrolyte which is formed by using the composition.

Abstract: The present invention relates to a non-aqueous electrolyte solution including a non-aqueous organic solvent, a lithium salt, and an oligomer represented by Formula 1 described in the present specification, and a lithium secondary battery including the same. Since the non-aqueous electrolyte solution according to an embodiment of the present invention may reduce gas, such as CO or CO2, generated in the secondary battery during high-temperature storage, it may further improve high-temperature stability of the lithium secondary battery.

Abstract: The present invention relates to a composition for a gel polymer electrolyte, a gel polymer electrolyte prepared by polymerizing the same, and a lithium secondary battery including the gel polymer electrolyte, and particularly, to a composition for a gel polymer electrolyte having improved high-temperature safety, a gel polymer electrolyte formed by polymerizing the composition in an inert atmosphere, and a lithium secondary battery including the gel polymer electrolyte.

Abstract: The present invention relates to a non-aqueous electrolyte for lithium secondary battery, and more particularly, to a non-aqueous electrolyte including a lithium salt having a concentration of 4.1 M or more, an organic solvent, and a surfactant.

Abstract: The present invention provides a composition for a gel polymer electrolyte, the composition including: an oligomer represented by Formula 1; an additive; a polymerization initiator; a lithium salt; and a non-aqueous solvent, the additive including at least one compound selected from the group consisting of a substituted or unsubstituted phosphate-based compound and a substituted or unsubstituted benzene-based compound, a gel polymer electrolyte prepared using the same, and a lithium secondary battery.

Abstract: The present invention relates to a composition for a gel polymer electrolyte and a lithium secondary battery including the same, and more specifically, an objective of the present invention is to provide a secondary battery in which, since an isocyanate-containing monomer is introduced to a composition for a gel polymer electrolyte to induce a urethane reaction with LiOH on a surface of a lithium transition metal oxide to form a coating layer including a urethane bond-containing oligomer on the surface of the lithium transition metal oxide, and thereby side reactions caused by HF in the battery are minimized, capacity characteristics are improved, and adhesion between a positive electrode and a separator is enhanced to minimize the swelling phenomenon of the battery.

Abstract: The present invention relates to a composition for a gel polymer electrolyte, a gel polymer electrolyte prepared using the same and an electrochemical device including the same, and specifically provides a composition for a gel polymer electrolyte including an oligomer which includes a compound represented by Formula 1 and a compound represented by Formula 2, provides a gel polymer electrolyte prepared using the same, and provides an electrochemical device including the same.

Abstract: The present invention relates to a gel polymer electrolyte, which includes a matrix polymer and an electrolyte solution impregnated in the matrix polymer, wherein the matrix polymer is formed in a three-dimensional network structure by polymerizing a first oligomer which includes unit A represented by Formula 1 and unit B having a crosslinkable functional group derived from a compound including at least one copolymerizable acrylate group, and a lithium secondary battery including the same.

Abstract: The present invention provides a composition for a gel polymer electrolyte, the composition including a first oligomer represented by Formula 1, a second oligomer including a first repeating unit represented by Formula 2a derived from a styrene monomer, a polymerization initiator, a lithium salt, and a non-aqueous solvent. The present invention also provides a gel polymer electrolyte prepared using the same, and a lithium secondary battery.

Abstract: The present invention provides an electrolyte solution for a lithium secondary battery including an additive, which may prevent a chemical reaction between the electrolyte solution and an electrode by forming a stable solid electrolyte interface (SEI) and a protection layer on the surface of the electrode, and a lithium secondary battery in which life characteristics and high-temperature stability are improved by including the same.

Abstract: The present invention relates to a composition for a gel polymer electrolyte and a gel polymer electrolyte prepared using the same, and specifically provides a composition for a gel polymer electrolyte including a lithium salt, an organic solvent, and a polymer A having an epoxy group represented by Formula 1, and a polymer B having an amine group and a cyanide group represented by Formula 2, wherein the polymers A and B are included in an amount of 1 to 20 wt % based on the total weight of the composition for a gel polymer electrolyte, and wherein a gel polymer electrolyte for a secondary battery can be prepared that includes a polymer network formed by combining the polymer A having an epoxy group represented by Formula 1 and the polymer B having an amine group and a cyanide group represented by Formula 2 in a three-dimensional structure.

Abstract: The present invention relates to an electrolyte for a lithium secondary battery and a lithium secondary battery including the same, and particularly, to an electrolyte for a lithium secondary battery, which includes a lithium salt, an organic solvent, and an oligomer represented by Formula 1 described in the present specification, and a lithium secondary battery in which overall performance is improved by suppressing reactivity with lithium metal by including the electrolyte.

Abstract: An electrolyte for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In an embodiment, an electrolyte for a lithium secondary battery includes a lithium salt, an organic solvent, and an oligomer represented by Formula 1 described in the present specification or a polymer derived from the oligomer represented by Formula 1. A lithium secondary battery including the electrolyte for a lithium secondary battery is improved by suppressing reactivity of lithium metal.

Abstract: Provided are a gel polymer electrolyte including a polymer network, and an electrolyte solution impregnated in the polymer network, wherein the polymer network is formed by combining a first oligomer, which includes unit A derived from a monomer including at least one copolymerizable acrylate or acrylic acid, unit C including urethane, and unit E including alkylene group substituted with one or more fluorine, in a three-dimensional structure, and a lithium secondary battery including the gel polymer electrolyte.

Abstract: The present invention relates to a composition for a gel polymer electrolyte, a gel polymer electrolyte prepared by polymerizing the same, and a lithium secondary battery including the gel polymer electrolyte, and particularly, to a composition for a gel polymer electrolyte having improved high-temperature safety, a gel polymer electrolyte formed by polymerizing the composition in an inert atmosphere, and a lithium secondary battery including the gel polymer electrolyte.

Abstract: The present disclosure provides a non-aqueous liquid electrolyte comprising a non-aqueous organic solvent, a lithium salt, and an additive that is an isocyanate-based compound comprising a carbon-carbon triple bond. By comprising the isocyanate-based compound additive comprising a carbon-carbon triple bond of the present disclosure in the non-aqueous liquid electrolyte, lifespan properties and high temperature durability are capable of being enhanced, and internal resistance of a battery is capable of being reduced.