A semiconductor nanoparticle, a production method thereof, and an electroluminescent device including the same. The production method includes: combining a magnesium precursor and an additive with a chalcogen precursor in a reaction medium including an organic solvent and an organic ligand; heating the reaction medium to a reaction temperature; and reacting the magnesium precursor and the chalcogen precursor in the presence of the additive to form a magnesium chalcogenide, wherein the semiconductor nanoparticle comprises the magnesium chalcogenide, wherein the magnesium chalcogenide comprises magnesium; and selenium, sulfur, or a combination thereof, and wherein the additive includes a hydride compound including an alkali metal, calcium, barium, aluminum, or a combination thereof.

The present application relates to copper-doped double perovskites, for example, copper-doped double perovskites of the formula (I) and to uses thereof, for example as low-bandgap materials such as a semiconducting material in a device. The present application also relates to methods of tuning the bandgap of a Cs.sub.2SbAgZ.sub.6 double perovskite (for example, wherein Z is Cl) comprising doping the double perovskite with copper.
Cs.sub.2Sb.sub.1-aAg.sub.1-bCu.sub.2xZ.sub.6  (I)

A functionalized fibrous hierarchical zeolite includes a framework comprising aluminum atoms, silicon atoms, and oxygen atoms, the framework further comprising a plurality of micropores and a plurality of mesopores. The functionalized fibrous hierarchical zeolite is functionalized with at least one amine. A plurality of nanoparticles comprising platinum are immobilized on the framework.

A process may produce mixed oxides including lithium, zirconium, and optionally at least one other than Li and Zr metal, by flame spray pyrolysis. Mixed oxides are obtainable by such a process. Such mixed oxides may be used in lithium ion batteries.

The invention provides a method for producing sheet-like particles of zeolite that cannot be obtained by a top-down method, and provides sheet-like particles of zeolite having an 8-membered oxygen ring structure obtained by the method. A thickness of the sheet-like particles is 1 nm to 100 nm, and an aspect ratio (maximum width/thickness in particles) of the sheet-like particles is 100 or more.

A lithium complex oxide and method of manufacturing the same, more particularly, a lithium complex oxide effective in improving the characteristics of capacity, resistance, and lifetime with reduced residual lithium and with different interplanar distances of crystalline structure between a primary particle locating in an internal part of secondary particle and a primary particle locating on the surface part of the secondary particle, and a method of preparing the same.

A lithium battery including a cathode, an anode, a liquid-impermeable ion-conductive membrane between the cathode and the anode, and an interlayer including a metal-carbon composite between the anode and the liquid-impermeable ion-conductive membrane, wherein the metal-carbon composite includes a carbonaceous material, a metal chemically bonded to the carbonaceous material, and a metal sulfide, a metal fluoride, or a combination thereof chemically bonded to the carbonaceous material.

The composite particle of the present invention includes an alumina particle having a card-house structure which is formed of three or more pieces of plate-like alumina and in which the pieces of plate-like alumina are fixed to each other; and an inorganic coating part provided on a surface of the plate-like alumina.

A CoVO.sub.x composite electrode and method of making is described. The composite electrode comprises a substrate with an average 0.5-5 μm thick layer of CoVO.sub.x having pores with average diameters of 2-200 nm. The method of making the composite electrode involves contacting the substrate with an aerosol comprising a solvent, a cobalt complex, and a vanadium complex. The CoVO.sub.x composite electrode is capable of being used in an electrochemical cell for water oxidation.

A coated particle having excellent thermal expansion control and electrical insulation properties includes a core of a first inorganic compound containing a metal or semimetal element P; and a shell of a second inorganic compound containing a metal or semimetal element Q. The first inorganic compound satisfies 1, and the coated particles satisfy 2 and 3. 1: |dA(T)/dT| is ≥10 ppm/°C at T1 of -200° C. to 1,200° C. A is (an a-axis lattice constant of a crystal in the first inorganic compound)/(a c-axis lattice constant of a crystal in the first inorganic compound). 2: in XPS of a surface of each of the coated particles, a ratio of a number of atoms of Q contained in the shell to a number of atoms of P contained in the core t is 45 to 300. 3: an average particle diameter of each coated particle is 0.1 to 100 .Math.m.