Patent application number | Description | Published |
20080274403 | ANODE FOR SECONDARY BATTERY HAVING NEGATIVE ACTIVE MATERIAL WITH NANO-FIBER NETWORK STRUCTURE AND SECONDARY BATTERY USING THE SAME, AND FABRICATION METHOD OF NEGATIVE ACTIVE MATERIAL FOR SECONDARY BATTERY - There is provided a metal oxide having a continuous nano-fiber network structure as a negative active material for a secondary battery. A method for fabricating such negative active material for a secondary battery comprises spinning a mixed solution of a metal oxide precursor and a polymer onto a collector to form composite fibers mixed with the metal oxide precursor and the polymer, thermally compressing or thermally pressurizing the composite fibers, and thermally treating the thermally compressed or thermally pressurized composite fibers to remove the polymer from the composite fiber. | 11-06-2008 |
20090072780 | Photovoltaic-Charged Secondary Battery System - The present invention provides a photovoltaic-charged secondary battery system, in which an electrode for optical power generation and an electrode for charging and discharging generated electrical energy are integrated into a single cell structure, and the potential difference between the electrodes is systematically controlled, thus maximizing the conversion efficiency of optical energy, maximizing the utilization rate of cell energy, and extending the life span of the battery. | 03-19-2009 |
20100002357 | CONDUCTIVE ELECTRODE USING METAL OXIDE FILM WITH NETWORK STRUCTURE OF NANOGRAINS AND NANOPARTICLES, PREPARATION METHOD THEREOF AND SUPERCAPACITOR USING THE SAME - The present invention relates to a porous conducting metal oxide electrode prepared by depositing a porous conducting metal oxide film comprising a conducting metal oxide film layer having a network structure of nanofibers, comprising nanograins or nanoparticles, on at least one surface of a current collector, and a conducting metal oxide coating layer on the network layer of the porous conducting metal oxide through the constant current method or the cyclic voltammetric method, and a high-speed charge/discharge and ultrahigh-capacity supercapacitor using the porous conducting a metal oxide electrode. | 01-07-2010 |
20100033903 | ELECTRODE FOR SUPERCAPACITOR HAVING MANGANESE OXIDE-CONDUCTIVE METAL OXIDE COMPOSITE LAYER, FABRICATION METHOD THEREOF, AND SUPERCAPACITOR COMPRISING SAME - The present invention provides an electrode for a supercapacitor, a fabrication method thereof, and a supercapacitor comprising the same. The electrode exhibits enhanced specific capacitance and electrical conductivity, among others, due to the fact that it comprises a porous composite metal oxide layer which has the structure of a web of entangled nanofibers or has a nanoparticle network structure. | 02-11-2010 |
20100045997 | OXYGEN SENSOR USING PRINCIPLE OF SURFACE PLASMON RESONANCE AND OXYGEN TRANSMISSION RATE MEASUREMENT SYSTEM INCLUDING THE SAME - An oxygen sensor using the principle of surface plasmon resonance, capable of measuring an oxygen concentration in a measurement chamber by detecting a change in resonance angle or refractive index using field enhancement effects, is provided. An oxygen transmission rate measurement system including the oxygen sensor is also provided. In this invention, only a change in voltage is measured at a fixed angle, thus achieving rapid measurement, and also, a single wavelength light source is used, thus reducing the size of the oxygen sensor and oxygen transmission rate measurement system. The oxygen sensor includes a laser diode for emitting light, a polarizer for converting the emitted light into polarized light, a prism for receiving the polarized light from the polarizer and having a sensor substrate provided on one surface thereof so that the polarized light is reflected, an oxygen concentration measurement chamber provided to enclose the sensor substrate so that oxygen a concentration of which is to be measured is contained therein, a photodiode for measuring the amount of light reflected from the prism, and a microcontroller unit for controlling operation of the oxygen sensor and calculating the oxygen concentration. | 02-25-2010 |
20100092866 | ELECTRODE FOR SECONDARY BATTERY, FABRICATION METHOD THEREOF, AND SECONDARY BATTERY COMPRISING SAME - The present invention relates to an electrode for a secondary battery, comprising a collector and a porous electrode active material layer disposed on at least one surface of the collector by spraying metal oxide nanoparticle dispersion, wherein the porous electrode active material comprises one selected from the group consisting of aggregated metal oxide nanoparticles, metal oxide nanoparticles and a mixture thereof, which is capable of undergoing stable high speed charging/discharging cycles under a high-energy-density and high-current condition. | 04-15-2010 |
20100167078 | NANO POWDER, NANO INK AND MICRO ROD, AND THE FABRICATION METHODS THEREOF - Disclosed are a method for fabricating nanopowders, nano ink containing the nanopowders and micro rods, and nanopowders containing nanoparticles, nano clusters or mixture thereof, milled from nano fiber composed of at least one kind of nanoparticles selected from a group consisting of metal, nonmetal, metal oxide, metal compound, nonmetal compound and composite metal oxide, nano ink containing the nanopowders and microrods, the method comprising spinning a spinning solution containing at least one kind of precursor capable of composing at least one kind selected from a group consisting of metal, nonmetal, metal oxide, metal compound, nonmetal compound and composite metal oxide, crystallizing or amorphizing the spun precursor to produce nano fiber containing at least one kind of nanoparticles selected from a group consisting of metal, nonmetal, metal oxide, metal compound, nonmetal compound and composite metal oxide, and milling the nano fiber to fabricate nanopowders containing nanoparticles, nano clusters or mixture thereof. | 07-01-2010 |
20110114953 | TRANSISTOR USING DERIVATIVE POLYMETHYL-METHACRYLATE THIN FILM AS GATE INSULATOR AND PASSIVATION LAYER, AND FABRICATION METHOD THEREOF - Disclosed are a transistor including a gate insulation layer and an organic passivation layer of a polymer thin film, and a fabrication method thereof. The transistor comprises a substrate, a gate electrode formed on the substrate, a gate insulation layer including a polymethacrylic acid thin film, formed on the gate electrode and the substrate, a channel layer formed on the gate insulation layer, source electrode and drain electrode formed on the channel layer so as to expose at least a part of the channel layer, and an organic passivation layer including a polymethacrylic acid thin film, formed on the source electrode, drain electrode and the partially exposed channel layer. The method for fabricating a transistor comprises steps of forming a gate electrode on a substrate, forming a gate insulation layer of a polymethacrylic acid thin film on the gate electrode and the substrate, forming a channel layer on the gate insulation layer, forming source electrode and drain electrode on the channel layer so as to expose at least a part of the channel layer, and forming an organic passivation layer of a polymethacrylic acid thin film on the source electrode, drain electrode and the partially exposed channel layer. | 05-19-2011 |
20110151255 | NANOFIBER AND PREPARATION METHOD THEREOF - A nanofiber, which is prepared by using a fabrication method comprising the steps of spinning a spinning solution prepared by dissolving at least one precursor for metal, metal oxide, or metal complex oxide with a polymer mixture comprising at least two polymers having different molecular weights and glass transition temperatures in a solvent and thermally treating the spun fiber, comprises close-packed nanoparticles of a metal, a metal oxide, a metal complex oxide or a mixture thereof and has excellent structural, thermal, and mechanical stability as well as a uniform fiber-shape. | 06-23-2011 |
20110274906 | SILICON CARBIDE NANOFIBER AND FABRICATION METHOD OF SILICON CARBIDE NANOFIBER USING EMULSION SPINNING - Disclosed is: a single crystalline silicon carbide nanofiber having improved thermal and mechanical stability as well as a large specific surface area which is applicable to a system for purifying exhaust gas, silicon carbide fiber filter, diesel particulate filter having a high temperature stability and may be used in the form of nanostructures such as nanorods and nanoparticles. | 11-10-2011 |
20120042713 | GAS SENSOR USING METAL OXIDE NANOPARTICLES, AND METHOD FOR MANUFACTURING SAME - The present invention provides a gas sensor, including: a sensor substrate provided with an electrode; and a thin layer of sensor material formed by spraying a solution in which metal oxide nanoparticles are dispersed onto the sensor substrate. The gas sensor is advantageous in that a sensor material is formed into a porous thin layer containing metal oxide nanoparticles having a large specific surface area, thus realizing high sensitivity on the ppb scale and a high reaction rate. Further, the gas sensor is advantageous in that it can be manufactured at room temperature, and the thickness of a sensor material can be easily adjusted by adjusting the spray time, so that a thin gas sensor or a thick gas sensor can be easily manufactured. | 02-23-2012 |
20120063058 | COMPOSITE ELECTRODE ACTIVE MATERIAL HAVING M1-xRuxO3 (M=Sr, Ba, Mg), SUPERCAPACITOR USING THE SAME AND FABRICATION METHOD THEREOF - Disclosed are a composite electrode active material and a supercapacitor using the same, and more particularly, an electrode active material having M | 03-15-2012 |
20120100303 | CARBON NANOFIBER INCLUDING COPPER PARTICLES, NANOPARTICLES, DISPERSED SOLUTION AND PREPARATION METHODS THEREOF - Disclosed are amorphous carbon nanofibers including copper nanoparticles or copper alloy nanoparticles, copper composite nanoparticles prepared by grinding the amorphous carbon nanofibers and implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons, a dispersed solution including the copper composite nanoparticles, and preparation methods thereof and the amorphous carbon nanofibers include nanoparticles including copper, copper nanoparticles or copper alloy nanoparticles, and, the copper composite nanoparticles are implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons. | 04-26-2012 |
20120107683 | COMPOSITES OF SELF-ASSEMBLED ELECTRODE ACTIVE MATERIAL-CARBON NANOTUBE, FABRICATION METHOD THEREOF AND SECONDARY BATTERY COMPRISING THE SAME - A composite of electrode active material including aggregates formed by self-assembly of electrode active material nanoparticles and carbon nanotubes, and a fabrication method thereof are disclosed. This composite is in the form of a network in which at least some of the carbon nanotubes connect two or more aggregates that are not directly contacting each other, creating an entangled structure in which a plurality of aggregates and a plurality of carbon nanotube strands are intertwined. Due to the highly conductive properties of the carbon nanotubes in this composite, charge carriers can be rapidly transferred between the self-assembled aggregates. This composite may be prepared by preparing a dispersion in which the nanoparticles and/or carbon nanotubes are dispersed without any organic binders, simultaneously spraying the nanoparticles and the carbon nanotubes on a current collector through electrospray, and then subjecting the composite material formed on the current collector to a heat treatment. | 05-03-2012 |
20120273784 | FABRICATION OF ELECTRONIC AND PHOTONIC SYSTEMS ON FLEXIBLE SUBSTRATES BY LAYER TRANSFER METHOD - A transfer layer includes a transparent substrate. A buffer layer is formed on the transparent substrate that comprises PbO, GaN, PbTiO | 11-01-2012 |
20150160149 | SENSING MATERIAL FOR GAS SENSOR, GAS SENSOR COMPRISING THE SENSING MATERIAL, METHOD OF PREPARING THE SENSING MATERIAL, AND METHOD OF MANUFACTURING THE GAS SENSOR - A sensing material for a gas sensor, a gas sensor including the sensing material, a method of preparing the sensing material, and a method of manufacturing a gas sensor using the sensing material are provided. | 06-11-2015 |
20160041116 | COMPOSITE METAL OXIDE MATERIALS INCLUDING POLYCRYSTALLINE NANOFIBERS, MICROPARTICLES, AND NANOPARTICLES, GAS SENSORS USING THE SAME AS A SENSING MATERIAL THEREOF, AND MANUFACTURING METHODS THEREOF - Provided are a composite metal oxide material, a method of manufacturing the same, and a gas sensor using the same as a sensing material thereof. The composite metal oxide material may include polycrystalline nanofibers and at least one of microparticles and nanoparticles. The use of the composite metal oxide material makes it possible to improve structural, mechanical, thermal, and lifetime stabilities of the gas sensor. Further, the presence of the microparticles and/or nanoparticles allows the gas sensor to have a base resistance lower than that of a nanofiber-based gas sensor. Since the microparticles and/or nanoparticles are attached to the nanofibers, the composite metal oxide material can have an increased mobility of electrons or holes and an increased surface area, and thus, the gas sensor can have fast response/recovery speeds and high gas sensitivity. | 02-11-2016 |