Abstract: Disclosed is a method of predicting the lithium ion conductivity of a solid electrolyte having a specific composition.

Abstract: Disclosed is a method of screening a solid electrolyte having excellent lithium ion conductivity and stability.

Abstract: A lithium metal halide-based solid electrolyte for an all-solid-state battery with excellent lithium ion conductivity, includes a compound represented by the following Chemical Formula 1. Li6-a(M11-bM2b)X6??[Chemical Formula 1] wherein M1 comprises a group 3 element, a group 4 element or a group 13 element, M2 comprises silicon (Si), germanium (Ge), tin (Sn) or lead (Pb), X comprises chlorine (Cl), bromine (Br) or iodine (I), 0?b?1, and a is a number satisfying the following Mathematical Formula 1.

Abstract: An argyrodite-based solid electrolyte may contain a compound having a novel composition calculated by simulation of Ab initio molecular dynamics (AIMD). The solid electrolyte containing a compound having a novel composition that satisfies a certain range of monoatomic disorder (è) and a certain range of standard deviation (STD) of the size of the area formed as migration paths of Li metals, which are calculated by AIMD simulation, has an advantage of excellent ion conductivity due to promoted diffusion of monoatoms in the area.

Abstract: An annealing method is provided. The annealing method includes preparing a metal oxide structure, annealing the metal oxide structure in a gas atmosphere including nitrogen to fabricate a metal compound structure, an oxygen content of which is lower than that of the metal oxide structure, from the metal oxide structure, and annealing the metal compound structure in a gas atmosphere including oxygen to fabricate a nitrogen-doped metal oxide structure, which has a specific surface area greater than that of the metal oxide structure, from the metal compound structure.

Abstract: An annealing method is provided. The annealing method includes preparing a metal oxide structure, annealing the metal oxide structure in a gas atmosphere including nitrogen to fabricate a metal compound structure, an oxygen content of which is lower than that of the metal oxide structure, from the metal oxide structure, and annealing the metal compound structure in a gas atmosphere including oxygen to fabricate a nitrogen-doped metal oxide structure, which has a specific surface area greater than that of the metal oxide structure, from the metal compound structure.

Abstract: Provided are a mixed cathode active material having improved power characteristics and safety, and a lithium secondary battery including the same. More particularly, the present invention relates to a mixed cathode active material which may assist power in a low SOC range to widen an available state of charge (SOC) range and may simultaneously provide improved safety by blending substituted LFP, in which operating voltage is adjusted by substituting a portion of iron (Fe) with other elements such as titanium (Ti), in order to prevent a rapid increase in resistance of manganese (Mn)-rich having high capacity but low operating voltage in a low SOC range (e.g., a SOC range of 10% to 40%), and a lithium secondary battery including the mixed cathode active material.

Abstract: Disclosed is a cathode active material including a lithium manganese-based oxide. The lithium manganese-based oxide has a spinel structure represented by Formula 1 below and high lithium ion diffusivity since (440) planes are predominantly formed in a crystal structure thereof. Li1+xMyMn2-x-yO4-zQz??(1) In Formula 1, 0?x?0.3, 0?y?1, and 0?z?1, M includes at least one element selected from the group consisting of Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, B, Ca, Zn, Zr, Nb, Mo, Sr, Sb, W, Ti, and Bi, and Q includes at least one element selected from the group consisting of N, F, S, and Cl.

Abstract: The present invention relates to a belt-shaped metal nanostructure in which a wide surface area of catalytically active material can be realized even by a relatively small amount thereof so that it shows an excellent catalytic activity, and a method for preparing same.

Abstract: An object of the present invention is a cathode active material including a lithium manganese-based oxide. The lithium manganese-based oxide has a spinel structure, exhibits core-shell phase transition by which phase transition of a crystal structure occurs from a cubic structure to a tetragonal structure in a direction from the surface of particles to the center of the particles during discharging to the 3V region, and includes a conductive material at the shell to improve electrical conductivity of the tetragonal structure.

Abstract: Disclosed is a cathode active material for secondary batteries, comprising at least one compound selected from the following Formula 1: xLi2MO3*yLiM?O2*zLi3PO4 (1) wherein M is at least one element selected from 1 period or 2 period metals having an oxidation number of +4; M? is at least one element selected from 1 period or 2 period metals having a mean oxidation number of +3; and 0.1?x?0.9, 0.1?y?0.9, 0<z?0.2 and x+y+z=1.

Abstract: Provided are a mixed cathode active material having improved power characteristics and a lithium secondary battery including the same. More particularly, the present invention relates to a mixed cathode active material which may reduce the difference in operating voltage with respect to layered-structure lithium transition metal oxide and may consequently minimize power reduction in a transient region by using LFP having a portion of iron (Fe) substituted with other elements, such as manganese (Mn), (LMFP), in order to prevent a rapid voltage drop in the transient region when layered-structure lithium transition metal oxide and olivine-structured lithium oxide (e.g., LFP) are blended, and a lithium secondary battery including the mixed cathode active material.

Abstract: The present invention relates to a metal nanobelt and a method of manufacturing the same, and a conductive ink composition and a conductive film including the same. The metal nanobelt can be easily manufactured at a normal temperature and pressure without requiring the application of high temperature and pressure, and also can be used to form a conductive film or conductive pattern that exhibits excellent conductivity if the conductive ink composition including the same is printed onto a substrate before a heat treatment or a drying process is carried out at low temperature. Therefore, the metal nanobelt and the conductive ink composition may be applied very appropriately for the formation of conductive patterns or conductive films for semiconductor devices, displays, solar cells in environments requiring low temperature heating. The metal nanobelt has a length of 500 nm or more, a length/width ratio of 10 or more, and a width/thickness ratio of 3 or more.

Abstract: Provided are a mixed cathode active material having improved power characteristics and safety, and a lithium secondary battery including the same. More particularly, the present invention relates to a mixed cathode active material which may assist power in a low SOC range to widen an available state of charge (SOC) range and may simultaneously provide improved safety by blending substituted LFP, in which operating voltage is adjusted by substituting a portion of iron (Fe) with other elements such as titanium (Ti), in order to prevent a rapid increase in resistance of manganese (Mn)-rich having high capacity but low operating voltage in a low SOC range (e.g., a SOC range of 10% to 40%), and a lithium secondary battery including the mixed cathode active material.

Abstract: The present invention relates to a belt-shaped metal nanostructure in which a wide surface area of catalytically active material can be realized even by a relatively small amount thereof so that it shows an excellent catalytic activity, and a method for preparing same. The belt-shaped metal nanostructure comprises a metal nanobelt containing the first metal and a conductive polymer, in the shape of a belt having a nanoscale thickness, a width larger than the thickness and a length larger than the width; and the second metal coupled to one or both planes of the metal nanobelt defined by said width and length.

Abstract: The present invention relates to a metal nanobelt and a method of manufacturing the same, and a conductive ink composition and a conductive film including the same. The metal nanobelt can be easily manufactured at a normal temperature and pressure without requiring the application of high temperature and pressure, and also can be used to form a conductive film or conductive pattern that exhibits excellent conductivity if the conductive ink composition including the same is printed onto a substrate before a heat treatment or a drying process is carried out at low temperature. Therefore, the metal nanobelt and the conductive ink composition may be applied very appropriately for the formation of conductive patterns or conductive films for semiconductor devices, displays, solar cells in environments requiring low temperature heating. The metal nanobelt has a length of 500 nm or more, a length/width ratio of 10 or more, and a width/thickness ratio of 3 or more.