Abstract: Disclosed are a nanocomposite including a catalytic material and a porous support having a structure of a blocky structure, a spherical structure, and a combination thereof and a manufacturing method thereof. The nanocomposite may have improved the lifespan performance while being applied to the oxidation-reduction reaction of a high temperature.

Abstract: Disclosed is a catalyst of a fiber form having improved the lifespan performance while being applied to the oxidation-reduction reaction of a high temperature and a manufacturing method thereof. Particularly, disclosed is a composite nanofiber catalyst including a support having a fiber form and a metal catalyst included in the support and a manufacturing method thereof.

Abstract: A method for preparing an anion adsorbent may be provided, which comprises the steps of: mixing at least two metal salts with each other, thereby forming a stack structure in which cationic compound layers and anionic compound layers containing anions and water of crystallization are alternately stacked on one another; performing a first heat treatment on the stack structure to expand between the cationic compound layers, thereby preparing a preliminary anion adsorbent; and performing a second heat treatment on the preliminary anion adsorbent to remove the anions and the water of crystallization from the anionic compound layers while allowing at least one of the anions to remain, thereby preparing the anion adsorbent.

Abstract: A method for manufacturing a gas sensor may be provided, the method comprising the steps of: preparing a metal nanowire; manufacturing a thermoelectric composite by adding a polymer bead to the metal nanowire, and then mechanically mixing same; manufacturing a thermoelectric layer by hot-pressing the thermoelectric composite; forming a first electrode on the upper surface of the thermoelectric layer, and forming a second electrode on the lower surface of the thermoelectric layer; and disposing a heating catalyst layer on the first electrode.

Abstract: A method for manufacturing a gas sensor may be provided, the method comprising the steps of: preparing a porous base substrate; providing, on the porous base substarte, a source solution having graphene dispersed in a base solvent; manufacturing a graphene-impregnated base substrate by means of a driving process; and forming a first electrode and a second electrode on the graphene-impregnated base substrate.

Abstract: A thermochemical sensor is provided. The thermochemical sensor comprises: a substrate structure comprising a thermoelectric surface having concave portions and convex portions; a base fiber disposed on the thermoelectric surface of the substrate structure; and a catalyst layer that conformally covers the thermoelectric surface of the substrate structure and the base fiber.

Abstract: Provided are a nanostructure network and a method of fabricating the same. The nanostructure network includes nanostructures having a poly-crystalline structure formed by self-assembly of the nanostructures. The method includes preparing a nanostructure solution in which nanostructures are dispersed in a first solvent, forming a nanostructure ink by adding the nanostructure solution into a second solvent having a viscosity higher than that of the first solvent, coating a surface of a substrate with the nanostructure ink, and forming a nanostructure network by evaporating the first solvent and the second solvent included in the nanostructure ink coated on the substrate.

Abstract: The present invention relates to a thermochemical gas sensor including a substrate provided with an insulating layer; a seed layer provided on the insulating layer; a thermoelectric thin film provided on the seed layer; an electrode provided on the thermoelectric thin film; a catalyst layer provided on the electrode and causing exothermic reaction when in contact with gas to be sensed; and an electrode wire electrically connected to the electrode, wherein the thermoelectric thin film is formed of a material including a chalcogenide, wherein the chalcogenide includes one or more chalcogens selected from the group consisting of selenium (Se) and tellurium (Te).

Abstract: The present invention relates to a gas sensor and a manufacturing method thereof. A sensor body of the gas sensor is formed by cutting a multi-layered ceramic/metal platform where a plurality of sequential layer structures of a ceramic dielectric material and metal are layered in a layering direction. The sensor body includes at least one layered body wherein a ceramic dielectric material, a first internal electrode, a ceramic dielectric material, and a second internal electrode are sequentially layered. The first internal electrode and the second internal electrode are exposed through a cut surface by cutting. The first internal electrode is electrically connected to a first electrode terminal disposed on a first side of the sensor body, and the second internal electrode is electrically connected to a second electrode terminal disposed on a second side of the sensor body facing the first side.

Abstract: Disclosed is a method of producing a soft magnetic powder including spraying gas or water into a pure iron bath to prepare a pure iron powder, surface-treating the pure iron powder by milling to increase surface stress of the pure iron powder and make the pure iron powder spherical, and subjecting the surface-treated pure iron powder to reducing thermal treatment to grow surface crystal grains of the pure iron powder and to prepare a soft magnetic powder.

Abstract: Provided is a wideband electromagnetic wave (EMW) absorber including a magnetic composite having a structure in which magnetic particles are dispersed in a polymer resin, and a plurality of conductive lines arranged in the magnetic composite, and a method of manufacturing the same. The wideband EMW absorber can be used for a device configured to emit EMWs and effectively absorb wideband EMWs.

Abstract: Provided are a thermally conductive ceramic-polymer composite in which thermoplastic polymers form a matrix, and planar fragments of thermally conductive ceramic or thermally conductive ceramic powder is uniformly dispersed on a grain boundary between thermoplastic polymer particles, thereby forming a thermal pathway, wherein the thermoplastic polymer particles are formed in a faceted shape, and the average size of the planar fragments of thermally conductive ceramic or thermally conductive ceramic powder is smaller than 1/10 of that of the thermoplastic polymer particles, and a method of preparing the same. Accordingly, since dispersion and interfacial affinity of a thermally conductive ceramic filler are maximized, excellent electrical insulation and excellent thermal conductivity can be exhibited even with a small content of the thermally conductive ceramic filler.

Abstract: The present invention relates to a thermoelectric composite in which a thermoplastic polymer constitutes a matrix, and one or more types of electroconductive materials selected from the group consisting of chalcogen materials and chalcogenides are dispersed at grain boundaries between the thermoplastic polymer particles to form a conductive pathway, wherein an average size of the electroconductive materials is smaller than an average size of the thermoplastic polymer particles, the chalcogen materials are one or more substances selected from the group consisting of sulfur (S), selenium (Se), tellurium (Te), and polonium (Po), the chalcogenides are compounds containing one or more chalcogens selected from the group consisting of S, Se, Te, and Po, and the thermoelectric composite has a thermal conductivity of 0.1 to 0.5 W/m·K. The present invention also relates to a method of preparing the thermoelectric composite.

Abstract: Provided are a thermally conductive ceramic-polymer composite in which thermoplastic polymers form a matrix, and planar fragments of thermally conductive ceramic or thermally conductive ceramic powder is uniformly dispersed on a grain boundary between thermoplastic polymer particles, thereby forming a thermal pathway, wherein the thermoplastic polymer particles are formed in a faceted shape, and the average size of the planar fragments of thermally conductive ceramic or thermally conductive ceramic powder is smaller than 1/10 of that of the thermoplastic polymer particles, and a method of preparing the same. Accordingly, since dispersion and interfacial affinity of a thermally conductive ceramic filler are maximized, excellent electrical insulation and excellent thermal conductivity can be exhibited even with a small content of the thermally conductive ceramic filler.

Abstract: The present invention relates to a thermochemical gas sensor using chalcogenide-based nanowires and a method for same, comprising: a porous alumina template comprising a front surface, a rear surface, and side surfaces and provided with a plurality of pores which penetrate the front surface and the rear surface; a seed layer provided on the rear surface of the porous alumina template for covering the plurality of pores and having electric conductivity; a plurality of chalcogenide-based nanowires provided inside the plurality of pores and coming into contact with the seed layer, which is exposed through the plurality of pores; an electrode provided on the front surface of the porous alumina template and coming into contact with the chalcogenide-based nanowires; an electrode wire for electrically connecting with the electrode; and a porous white gold-alumina composite or a porous palladium-alumina composite provided above the electrode for causing a heat-emitting reaction by coming into contact with a gas to be

Abstract: A solid oxide electrolyte including an oxide represented by Formula 1: (1?a?b)(Ce1-xMaxO2-?)+a(Mb)+b(Mc)??Formula 1 wherein 0<a<0.2, 0<b<0.2, 0<x<0.5, ? is selected so that the Ce1-xMaxO2-? is electrically neutral, Ma is a rare-earth metal, Mb is an oxide, a nitride, or a carbide of aluminum (Al), silicon (Si), magnesium (Mg), or titanium (Ti), or a combination including at least one of the foregoing, and Mc is an oxide of a metal of Groups 6 through 11.

Abstract: A solid oxide electrolyte including an oxygen ion conducting solid solution, wherein the solid solution is represented by Formula 1 below: Zr1-x-y-zMaxMbyMczO2-???Formula 1 wherein x is greater than 0 and less than about 0.3, y is greater than 0 and less than about 0.1, z is greater than 0 and less than about 0.1, ? is selected to make the solid solution ionically neutral, Ma, Mb, and Mc are each independently a metal selected from the group consisting of elements of Groups 3, Groups 5 through 13, and Group 14, and an ionic radius of each of Ma+3, Mb+3, and Mc+3 are different from each other.

Abstract: Provided is a wideband electromagnetic wave (EMW) absorber including a magnetic composite having a structure in which magnetic particles are dispersed in a polymer resin, and a plurality of conductive lines arranged in the magnetic composite, and a method of manufacturing the same. The wideband EMW absorber can be used for a device configured to emit EMWs and effectively absorb wideband EMWs.

Abstract: A solid oxide electrolyte including an oxide represented by Formula 1: (1?a?b)(Ce1-xMaxO2-?)+a(Mb)+b(Mc)??Formula 1 wherein 0<a<0.2, 0<b<0.2, 0<x<0.5, ? is selected so that the Ce1-xMaxO2-? is electrically neutral, Ma is a rare-earth metal, Mb is an oxide, a nitride, or a carbide of aluminum (Al), silicon (Si), magnesium (Mg), or titanium (Ti), or a combination including at least one of the foregoing, and Mc is an oxide of a metal of Groups 6 through 11.

Abstract: A solid oxide electrolyte including an oxygen ion conducting solid solution, wherein the solid solution is represented by Formula 1 below: Zr1-x-y-zMaxMbyMczO2-???Formula 1 wherein x is greater than 0 and less than about 0.3, y is greater than 0 and less than about 0.1, z is greater than 0 and less than about 0.1, ? is selected to make the solid solution ionically neutral, Ma, Mb, and Mc are each independently a metal selected from the group consisting of elements of Groups 3, Groups 5 through 13, and Group 14, and an ionic radius of each of Ma+3, Mb+3, and Mc+3 are different from each other.