Disclosed are a single-source precursor for synthesizing metal chalcogenide nanoparticles for producing a light absorption layer of solar cells comprising a Group VI element linked as a ligand to any one metal selected from the group consisting of copper (Cu), zinc (Zn) and tin (Sn), metal chalcogenide nanoparticles produced by heat-treating at least one type of the single-source precursor, a method of preparing the same, a thin film produced using the same and a method of producing the thin film.

A cathode active material for a lithium secondary battery includes a lithium-transition metal composite oxide particle having a lattice strain (η) of 0.18 or less, which is calculated. by applying Williamson-Hall method defined by Equation 1 to XRD peaks measured through XRD analysis, and having an XRD peak intensity ratio of 8.9% or less, which is defined by Equation 2. By controlling the lattice strain and XRD peak intensity ratio of the lithium-transition metal composite oxide particle, a lithium secondary battery with improved life-span characteristics as well as output characteristics is provided.

A dielectric film containing an alkaline earth metal oxide having a NaCl type crystal structure as a main component, wherein the dielectric film has a (111)-oriented columnar structure in a direction perpendicular to the surface of the dielectric film, and in a Cu—Kα X-ray diffraction chart of the dielectric film, a half width of the diffraction peak of (111) is in a range of from 0.3° to 2.0°.

Provided are core-shell particles that have high luminous efficiency and are useful as quantum dots, a method for producing the same, and a film produced using the core-shell particles. The core-shell particles of the invention are core-shell particles having a core containing a Group III element and a Group V element; and a shell covering at least a portion of the surface of the core and containing a Group II element and a Group VI element, in which the proportion of the peak intensity ratio of the Group II element with respect to the peak intensity ratio of the Group III element as measured by X-ray photoelectron spectroscopy analysis is 0.25 or higher.

Disclosed is a method of preparing a carbide-derived carbon having high ion mobility for use in a lithium battery anode material, a lithium air battery electrode, a supercapacitor electrode, and a flow capacitor electrode, including thermally treating a carbide compound in a vacuum, thus obtaining a vacuum-treated carbide compound; and thermochemically reacting the vacuum-treated carbide compound with a halogen element-containing gas, thus extracting the element other than carbon from the vacuum-treated carbide compound, wherein annealing can be further performed after thermochemical reaction. This carbide-derived carbon has a small pore distribution, dense graphite fringe, and a large lattice spacing and thus high ion mobility, compared to conventional carbide-derived carbon obtained only by thermochemical reaction with a halogen element-containing gas.

The present invention relates to a positive electrode active material having improved capacity characteristic and life cycle characteristic, and a method of preparing the same, and specifically, to a positive electrode active material for a lithium secondary battery, wherein the positive electrode active material comprises a compound represented by Formula 1 above and allowing reversible intercalation/deintercalation of lithium, and from a crystal structure analysis of the positive electrode active material by a Rietveld method in which space group R-3m is used in a crystal structure model on the basis of an X-ray diffraction analysis, the thickness of MO slab is 2.1275 Å or less, the thickness of inter slab is 2.59 Å or greater, and the cation mixing ratio between Li and Ni is 0.5% or less, and a method of preparing the same.

Uses are disclosed for a new crystalline molecular sieve designated SSZ-102 synthesized using an N,N′-dimethyl-1,4-diazabicyclo[2.2.2]octane dication as a structure directing agent. SSZ-102 has ESV framework topology.

An object of the present invention is to provide a non-aqueous electrolyte secondary battery which has a large charge/discharge capacity, has a small irreversible capacity, and is capable of effectively using an active material.

This object can be achieved by a material for a non-aqueous electrolyte secondary battery anode; a specific surface area determined by a BET method being not greater than 30 m.sup.2/g; an atomic ratio (H/C) of hydrogen atoms to carbon atoms determined by elemental analysis being not greater than 0.1; an average particle size being not greater than 50 μm; and a diffraction intensity ratio (R-value) determined by Equation (1) being not greater than 1.25: (wherein I.sub.max is a maximum value of a 002 diffraction intensity of carbon measured at an angle of diffraction (2θ) within a range of from 20 to 25° as determined by powder X-ray diffraction measured using CuKα rays; I.sub.min is a minimum value of a diffraction intensity measured at an angle of diffraction (2θ) within a range of from 15 to 20° as determined by powder X-ray diffraction; and 135 is a diffraction intensity at an angle of diffraction (2θ) of 35° as determined by powder X-ray diffraction).

The present specification relates to composite metal oxide particles manufactured by reacting two or more metal oxides and a method for manufacturing the same.

A method of making highly an active mixed transition metal oxide material has been developed. The method may include sulfiding the metal oxide material to generate metal sulfides which are used as catalyst in a conversion process such as hydroprocessing. The hydroprocessing may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.