General Research Institute for Nonferrous Metals, China

Beijing, China

General Research Institute for Nonferrous Metals, China

Beijing, China

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Patent
Grirem Advanced Materials Co. and General Research Institute for Nonferrous Metals, China | Date: 2015-08-03

The application relates to fluorescent powder which has a garnet structure and can be effectively excited by ultraviolet light or blue light, a method for preparing the fluorescent powder, and a light emitting device, an image display device and an illumination device comprising the fluorescent powder. A chemical formula of the fluorescent powder is expressed as: (M^(1)a-xM^(2)x)ZrbM^(3)cOd, where M^(1 )is one or two elements selected from Sr, Ca, La, Y, Lu and Gd, Ca or Sr being necessary; M^(2 )is one or two elements selected from Ce, Pr, Sm, Eu, Tb and Dy, Ce being necessary; M^(3 )is at least one element selected from Ga, Si, and Ge, Ga being necessary; and 2.8a3.2, 1.9b2.1, 2.8c3.2, 11.8d12.2, and 0.002x0.6.


Patent
General Research Institute for Nonferrous Metals, China and Grirem Advanced Materials Co. | Date: 2014-08-27

Provided are a Light Emitting Diode (LED) red fluorescent material and a lighting device having the same. The florescent material consists of elements M, A, D, X, L and Z, wherein element M at least contains one or more than one element of Be, Mg, Ca, Sr, Ba and Zn; element A at least contains one or more than one element of B, Al, Ga, In, La, Gd, Lu, Sc and Y; element D at least contains one or more than one element of Si, Ge, C, Sn, Ti, Zr and Hf; element X at least contains one or more than one element of N, O and F; element L at least contains one or more than one element of S, Se and Te; and element Z at least contains one or more than one element of a rare-earth element or a transition-metal element. The fluorescent material in the present disclosure has features of high lighting efficiency, good temperature properties, wide half-width and so on and can be independently used or used in combination with other fluorescent materials to prepare high-performance lighting devices.


Patent
General Research Institute for Nonferrous Metals, China and Grirem Advanced Materials Co. | Date: 2016-05-04

The present disclosure relates to a fluorescent powder and a light-emitting device including the same. The fluorescent powder includes an inorganic compound. The inorganic compound contains components including an element M, an element A, an element D, an element E, and an element R. The element M is selected from Eu, Ce, Mn, Tb, Dy, and Tm, the element A is selected from Mg, Ca, Sr, and Ba, the element D is selected from B, Al, Ga, In, La, Gd, Sc, Lu, and Y, the element E is selected from Si, Ge, Zr, and Hf, and the element R is at least two elements selected from N, O, F, and Cl. In a powder X-Ray Diffraction (XRD) spectrum with CoK radiation, the inorganic compound at least has diffraction peaks within ranges of an Bragg angle (2) from 27.3 to 28.3, 29.7 to 30.7, 41.9 to 42.9, and 43.5 to 44.5. The proposal of the fluorescent powder in the present invention provides more alternatives for the application of green fluorescent powder.


Yang M.,General Research Institute for Nonferrous Metals, China
Journal of Materials Chemistry | Year: 2011

Easy fabrication of nanostructured materials with high porosity and high specific surface area has been drawing much scientific interest. Here, we describe a direct electrodeposition of fern-shaped bismuth dendrites at hydrogen evolution overpotentials without any additive and foreign template. A predeposition step was adopted to adjust and control the nucleation and growth of hydrogen bubbles. Subsequently, the simultaneous electrochemical reductions of Bi 3+ and H + ions were performed at a constant overpotential. Scanning electron microscopy and transmission electron microscopy characterizations showed that the resultant microporous netlike films consisted of fern-shaped single-crystal bismuth dendrites. The formation mechanism was discussed and ascribed to a "stagnant" template effect of hydrogen bubbles, which limited the lateral growth of fern-shaped dendrites. Such a two-step electrodeposition could also be extended to the nanostructure fabrication of other metals and alloys with high hydrogen overpotentials. © The Royal Society of Chemistry 2011.


Yang M.,General Research Institute for Nonferrous Metals, China
Journal of Power Sources | Year: 2013

Spherical PtBi nanoparticles are electrodeposited from aqueous solution according to the preset composition. Their catalytic activities toward methanol electrooxidation are examined by cyclic voltammetry and chronoamperometry in acid media and first in alkaline media. Experimental results show that, methanol electrooxidation has lower onset potentials on PtBi than on Pt in either acid or alkaline media. The improved catalytic activities are due to the electronic effects of bismuth in PtBi. At higher overpotentials, the electrolyte acidity has produced different influences on the kinetics of methanol electrooxidation on PtBi and Pt. In acid media, PtBi is inferior to Pt for methanol oxidation at above 0.460 V, because that fewer continuous Pt sites on PtBi are not enough for the adsorption and dehydrogenation of methanol molecules. In alkaline media, the oxidation current on PtBi becomes much higher than that on Pt at above 0.768 V. The raised current can be credited to the bifunctional mechanism. Bi 2O5 sites on PtBi surface serve for OHad adsorption and Pt sites for methanol dehydrogenation. The better catalytic activity of PtBi nanoparticles in alkaline media suggests their promising application in alkaline direct alcohol fuel cells. © 2012 Elsevier B.V. All rights reserved.


Patent
General Research Institute for Nonferrous Metals, China | Date: 2014-06-20

The present disclosure relates to a fluorescent powder and a light-emitting device including the same. The fluorescent powder includes an inorganic compound. The inorganic compound contains components including an element M, an element A, an element D, an element E, and an element R. The element M is selected from Eu, Ce, Mn, Tb, Dy, and Tm, the element A is selected from Mg, Ca, Sr, and Ba, the element D is selected from B, Al, Ga, In, La, Gd, Sc, Lu, and Y, the element E is selected from Si, Ge, Zr, and Hf, and the element R is at least two elements selected from N, O, F, and Cl. In a powder X-Ray Diffraction (XRD) spectrum with CoK radiation, the inorganic compound at least has diffraction peaks within ranges of an Bragg angle (2) from 27.3 to 28.3, 29.7 to 30.7, 41.9 to 42.9, and 43.5 to 44.5.


Patent
General Research Institute for Nonferrous Metals, China | Date: 2013-09-29

An aluminum alloy material suitable for the manufacture of automotive body panels comprising: Si 0.6 to 1.2 wt %, Mg 0.7 to 1.3 wt %, Zn 0.25 to 0.8 wt %, Cu 0.02 to 0.20 wt %, Mn 0.01 to 0.25 wt %, Zr 0.01 to 0.20 wt %, with the balance being Al and incidental elements, based on the total weight of the aluminum alloy material. The aluminum alloy material satisfies the inequation of: 2.30 wt %(Si+Mg+Zn+2Cu) wt %3.20 wt %.


Patent
General Research Institute for Nonferrous Metals, China | Date: 2014-09-17

The invention relates to a nano silicon-carbon composite negative material for lithium ion batteries and a preparation method thereof. A porous electrode composed of silica and carbon is taken as a raw material, and a nano silicon-carbon composite material of carbon-loaded nano silicon is formed by a molten salt electrolysis method in a manner of silica in-situ electrochemical reduction. Silicon and carbon of the material are connected by nano silicon carbide, and are metallurgical-grade combination, so that the electrochemical cycle stability of the nano silicon-carbon composite material is improved. The preparation method of the nano silicon-carbon composite material provided by the invention comprises the following steps: compounding a porous block composed of carbon and silica powder with a conductive cathode collector as a cathode; using graphite or an inert anode as an anode, and putting the cathode and anode into CaCl_(2) electrolyte or mixed salt melt electrolyte containing CaCl_(2) to form an electrolytic cell; applying voltage between the cathode and the anode; controlling the electrolytic voltage, the electrolytic current density and the electrolytic quantity, so that silica in the porous block is deoxidized into nano silicon by electrolytic reduction, and the nano silicon-carbon composite material for lithium ion batteries is prepared at the cathode.


Patent
General Research Institute for Nonferrous Metals, China | Date: 2012-11-09

The invention relates to a nano silicon-carbon composite negative material for lithium ion batteries and a preparation method thereof. A porous electrode composed of silica and carbon is taken as a raw material, and a nano silicon-carbon composite material of carbon-loaded nano silicon is formed by a molten salt electrolysis method in a manner of silica in-situ electrochemical reduction. Silicon and carbon of the material are connected by nano silicon carbide, and are metallurgical-grade combination, so that the electrochemical cycle stability of the nano silicon-carbon composite material is improved. The preparation method of the nano silicon-carbon composite material provided by the invention comprises the following steps: compounding a porous block composed of carbon and silica powder with a conductive cathode collector as a cathode; using graphite or an inert anode as an anode, and putting the cathode and anode into CaCl_(2 )electrolyte or mixed salt melt electrolyte containing CaCl_(2 )to form an electrolytic cell; applying voltage between the cathode and the anode; controlling the electrolytic voltage, the electrolytic current density and the electrolytic quantity, so that silica in the porous block is deoxidized into nano silicon by electrolytic reduction, and the nano silicon-carbon composite material for lithium ion batteries is prepared at the cathode.


Patent
General Research Institute for Nonferrous Metals, China | Date: 2016-02-24

The present invention discloses an aluminum alloy material suitable for the manufacture of automotive body panels comprising: Si 0.6 to 1.2 wt%, Mg 0.7 to 1.3 wt%, Zn 0.25 to 0.8 wt%, Cu 0.02 to 0.20 wt%, Mn 0.01 to 0.25 wt%, Zr 0.01 to 0.20 wt%, and the balance of Al and incidental elements, based on the total weight of the aluminum alloy material, wherein the aluminum alloy material satisfies the inequation of: 2.30 wt% (Si+Mg+Zn+2Cu) wt%<3.20 wt%. The present invention further provides a method of producing the aluminum alloy material and a final component comprising the aluminum alloy material.

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