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91 results about "Zinc atom" patented technology

Preparation method of nitrogen-doped zinc oxide film

The invention relates to the technical field of zinc oxide preparation, and in particular relates to a preparation method of a nitrogen-doped zinc oxide film. The preparation method comprises: placing a silicon substrate in the reaction cavity of atomic layer deposition (ALD) equipment; introducing gas containing a zinc source into the reaction cavity of the ALD equipment, wherein the zinc atoms in the gas containing the zinc source are adsorbed to the silicon substrate; conveying hydrogen to the reaction cavity of the ALD equipment based on nitrogen as a carrier gas, and simultaneously carrying out plasma discharge; introducing an oxygen-containing source to the reaction cavity of the ALD equipment, wherein the zinc atoms which do not react with nitrogen atoms form zinc-oxygen bonds withthe oxygen atoms in the oxygen-containing source; and repeating the steps, so as to grow the zinc oxide film containing the nitrogen atoms layer by layer. In the preparation method provided by the invention, nitrogen doping is carried out on the zinc oxide film by utilizing the ALD equipment; the method is simple and practicable; by utilizing the characteristic of atomic layer deposition and single-layer cycle growth, the uniform nitrogen doping in the whole film structure can be achieved in the process of zinc oxide film growth so that the doped film is complete in structure and excellent inproperty.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI

Copper-zinc alloy current collector for inhibiting lithium dendrites

The invention relates to a copper-zinc alloy current collector for inhibiting lithium dendrites. A conventional current collector is covered with a layer of copper-zinc alloy, the thickness of the copper-zinc alloy is 10 nm to 1 [mu]m, and the zinc atom content of the copper-zinc alloy is 1-5%. The copper-zinc alloy current collector provides more active sites for lithium metal deposition than theconventional current collector, and a button battery is assembled in a glove box full of argon by using a metal lithium-loaded alloy current collector or a common copper foil as a negative electrodeand adopting a Celgard 2325 diaphragm and metallic lithium as a reference electrode and a counter electrode. Deposition/dissolution experiments are carried out with blue electricity. The current density is 0.5 mA cm<-2>, the voltage lag is significantly increased after the copper foil electrode only circulates for 520 h, and a copper-zinc alloy negative electrode still maintains a small voltage lag after 1000 h circulation. The current collector in the invention is applied to a lithium-lithium iron phosphate a battery, and the electrochemical performances of the battery are obviously better than those of a battery using a metallic lithium negative electrode adopting the common current collector.
Owner:TIANJIN UNIV

Metallo-silicate catalyst (MSC) compositions, methods of preparation and methods of use in partial upgrading of hydrocarbon feedstocks

The invention relates to the preparation of novel bi- or tri metallic silicate micro-porous and/or meso-porous materials based on cerium, nickel, copper and/or zinc on a porous silicate framework matrix to use its molecular sieve effect to target preferentially the acidic organic molecules present in hydrocarbon feedstocks like crude oil, bitumen, VGO and the like. The chosen metals are selected based on their ability to activate steam and transfer oxygen for completing the oxidation of carboxylic compounds or decarboxylating them. These composite materials can be prepared under hydrothermal synthesis conditions in order to produce suitable porous solids where the metals are well dispersed and preferentially distributed inside the channels of the silicate framework where they can interact only with the molecules that can go inside the channels. According to the invention, the metallo-silicate materials are prepared under hydrothermal synthesis conditions Modification of the physical-chemical properties of the porous silicate materials can be accomplished by partial replacement of the silicon atoms by cerium, nickel, copper and/or zinc atoms in the material by isomorphous substitutions of these elements in a synthesis gel or by post-synthesis modifications like ion-exchange or impregnation/deposition. The materials can be used as prepared catalysts for the steam catalytic reduction of the total acid number (TAN) in acidic crude oil feedstocks and in the presence of steam and/or CO2 as oxidizing agent to complete decarboxylation and to keep the metal oxide active sites from reducing and deactivating as well as other partial upgrading reactions.
Owner:PC CUPS LTD +1

High-carrier concentration ultrathin AZO transparent conducting thin film and preparation method thereof

The invention discloses a high-carrier concentration ultrathin AZO transparent conducting thin film and a preparation method thereof. The ultrathin AZO transparent conducting thin film comprises a substrate, a zinc layer and an AZO layer in sequence from top to bottom, wherein the total thickness of the zinc layer and the AZO layer is less than 120nm; the thickness of the zinc layer is 2-10nm; the thickness of the AZO layer is 35-100nm. According to the high-carrier concentration ultrathin AZO transparent conducting thin film and the preparation method thereof, deposition is carried out on the substrate by using magnetron sputtering to obtain the zinc layer and the AZO layer; rapid annealing is carried out on the thin film after the deposition; by virtue of setting the annealing condition, zinc atoms in the zinc layer permeate into the AZO layer and form Zni defects so as to improve the carrier concentration; the deposition temperature of the zinc layer and the AZO layer is not higher than 200 DEG C in the deposition process so that the production energy consumption is saved, the production cost is reduced and the production efficiency is improved; the high-carrier concentration ultrathin AZO transparent conducting thin film and the preparation method thereof are suitable for industrial production. The specific resistance of the high-carrier concentration ultrathin AZO transparent conducting thin film is 13-3.8*10<-4>omega.cm, the carrier concentration is 5.0-13.8*10<20>cm<-3>, and the average transmittance (including the substrate) at the wave section of 380-800nm is 70-88%.
Owner:宁波海燕新材料有限公司
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