Abstract: Provided are a novel nickel foam having a hierarchical pore structure, a method of producing the same, and an application thereof. Unlike a conventional nickel foam, the nickel foam has a well-developed hierarchical pore structure including pores having a size of 4 ?m or less in addition to inherent macropores having a size of 100 ?m to 900 ?m, and thus, may have a significantly large specific surface area. Accordingly, the nickel foam may be variously applied to an electrochemical reaction such as a water electrolysis system and an exhaust gas purification filter.

Abstract: A plated steel wire, according to one aspect of the present invention, comprises: a base steel wire; and a zinc alloy plated layer. The zinc alloy plated layer comprises, in percentage by weight: 1.0% to 3.0% of AI; 1.0% to 2.0% of Mg; 0.5% to 5.0% of Fe; and the balance being Zn and unavoidable impurities, and includes a Zn/MgZn2/AI ternary eutectic structure, a Zn single-phase structure, and an Fe—Zn-AI-based crystal structure, wherein the Fe—Zn-AI-based crystal structure is formed adjacent to the base steel wire, and can have an average thickness of ? to ½ with respect to an average thickness of the zinc alloy plated layer.

Abstract: Provided is a catalyst for oxygen evolution reaction (OER) which has excellent catalytic performance and durability of oxygen evolution reaction (OER) by applying an oxide of divalent titanium having high electrical conductivity as a support, and more particularly, a porous catalyst for oxygen evolution reaction (OER) including a porous titanium oxide support satisfying TiO2?x (0.1?x<2); and a metal hydroxide supported on the titanium oxide support, and a method of preparing the same are provided.

Abstract: The present invention relates to composite particles of a core-shell structure including a metal oxide particle core and a platinum-group transition metal shell, and an electrode for platinum-group transition metal-based electrochemical reactions including an oxygen reduction reaction, the electrode including the composite particles. Specifically, the present invention relates to: composite particles of a core-shell structure including a platinum-group transition metal shell formed on a metal oxide particle core by a photoreduction reaction; a catalyst for platinum-group transition metal-based electrochemical reactions including an oxygen reduction reaction, the catalyst including the composite particles; an electrode for platinum-group transition metal-based electrochemical reactions including an oxygen reduction reaction; a fuel cell; and a platinum-group transition metal-based electrochemical conversion device.

Abstract: The present invention relates to a composite that is-cost-effective, has an excellent catalytic activity, and significantly improves stability compared to a pure platinum catalyst according to the related art. Specifically, the composite according to the present invention contains a carbon support and a binary alloy consisting of platinum and an alkaline earth metal supported on the carbon support which satisfies a specific condition in a Pt 4f X-ray photoelectron spectroscopy (XPS) spectrum of the binary alloy.

Abstract: The present invention provides a method for producing a nitrogen-doped highly graphitic porous carbon body, and a nitrogen-doped highly graphitic porous carbon body produced according to the same. Also, the present invention provides a method for producing a sulfur and nitrogen double-doped highly graphitic porous carbon body, a sulfur and nitrogen double-doped highly graphitic porous carbon body produced according to the same, and an electrode catalyst for a fuel cell and/or a water electrolysis reaction comprising the carbon body.

Abstract: An electrode composed of a substrate including a graphene layer coated on a first metal; and a complex including a second metal deposited on the substrate and a hydroxide of the first metal, where the complex is in the form of core-shell in which the second metal is a core and the hydroxide of the first metal is a shell, and the second metal has a higher standard reduction potential than the first metal. The graphene-coated metal foam of the present invention is the first case that proves not only theoretically but also by experiment that the remarkable catalytic ability reducing other metals (Au, Pt, Ag, and Cu, etc.) with a higher reduction potential than the metal by graphene coated on the metal surface it electroless deposition without additional reductant or electrical reduction conditions is due to the electrical double layer or interfacial dipole induced between the graphene and the metal.

Abstract: Provided are a porous inorganic insulator-sulfur composite and a lithium-sulfur battery including the same. More particularly, provided are a composite having sulfur supported in pores of a porous inorganic insulator, a cathode for lithium-sulfur batteries or an interlayer, which includes the composite, and a lithium-sulfur battery including the cathode or the interlayer.

Abstract: The present invention relates to a method of reducing a metal oxide comprising the steps of preparing a mixture by mixing a metal oxide and a metal hydride (step 1) and reducing the mixture by heat treatment (step 2) and a method of producing a photocatalyst using the same, and The method of reducing a metal oxide of the present invention can easily reduce such metal oxides as TiO2, ZrO2, V2O3, and Fe2O3.

Abstract: An electrode catalyst is configured such that non-noble metal particles, noble metal particles or nitride-doped noble metal particles are supported on a carbon support, wherein the carbon support has a 2D planar crystal structure or a 3D polyhedral crystal structure and is doped with nitrogen, thereby exhibiting increased catalytic activity.

Abstract: Provided are a porous inorganic insulator-sulfur composite and a lithium-sulfur battery including the same. More particularly, provided are a composite having sulfur supported in pores of a porous inorganic insulator, a cathode for lithium-sulfur batteries or an interlayer, which includes the composite, and a lithium-sulfur battery including the cathode or the interlayer.

Abstract: An electrode composed of a substrate including a graphene layer coated on a first metal; and a complex including a second metal deposited on the substrate and a hydroxide of the first metal, where the complex is in the form of core-shell in which the second metal is a core and the hydroxide of the first metal is a shell, and the second metal has a higher standard reduction potential than the first metal. The graphene-coated metal foam of the present invention is the first case that proves not only theoretically but also by experiment that the remarkable catalytic ability reducing other metals (Au, Pt, Ag, and Cu, etc.) with a higher reduction potential than the metal by graphene coated on the metal surface it electroless deposition without additional reductant or electrical reduction conditions is due to the electrical double layer or interfacial dipole induced between the graphene and the metal.

Abstract: The present invention relates to a method of reducing a metal oxide comprising the steps of preparing a mixture by mixing a metal oxide and a metal hydride (step 1) and reducing the mixture by heat treatment (step 2) and a method of producing a photocatalyst using the same, and The method of reducing a metal oxide of the present invention can easily reduce such metal oxides as TiO2, ZrO2, V2O3, and Fe2O3.

Abstract: The present invention relates to a reverse osmosis membrane including: a porous support; and a polyamide active layer formed on the porous support and including zeolite, surface-treated with a compound having at least one functional group selected from a group consisting of an amino group and a glycidyl group, and a method of manufacturing the same.

Abstract: Provided are mesoporous carbon structures and a method for preparing the same. The mesoporous carbon structures have a high surface area, a large pore volume and a large pore size in addition to a small mesopore length. Therefore, when using the mesoporous carbon structures as an anode active material for a lithium secondary battery, it is possible to provide a lithium secondary battery with excellent lithium ion storability and charge/discharge efficiency.

Abstract: The present invention relates to a reverse osmosis membrane including: a porous support; and a polyamide active layer formed on the porous support and including zeolite, surface-treated with a compound having at least one functional group selected from a group consisting of an amino group and a glycidyl group, and a method of manufacturing the same.

Abstract: Provided are organosilica composites based on bis(3-triethoxysilylpropyl)tetrasulfide (TESPTS) or bis(3-triethoxysilylpropyl)disulfide (TESPDS) and containing octadecyltrimethoxy silane (C18TMS) and cetyltrimethylammonium bromide (CTAB), and a method for preparing hollow or porous carbon structures and silica structures using the same. According to the present disclosure, it is possible to obtain hollow or porous carbon structures and silica structures in a more simple and cost-efficient manner. Thus, the resultant structures have a high surface area and a large mesopore volume, so that they may serve as catalyst carriers for fuel cells capable of loading metal catalyst particles having a smaller particle size in a larger amount and in a more homogeneously dispersed state.

Abstract: Disclosed is a method for preparing a platinum/support catalyst or a platinum alloy/support catalyst, including: a) preparing a dispersion solution including urea, a support and a water-soluble salt of at least one metal(s) having catalytic activity; (b) reacting the dispersion solution at high temperature so as to deposit the metal hydroxide particles derived from the at least one metal(s) on the support; and (c) reducing the metal hydroxide particles. The size and distribution of the platinum particles or platinum alloy particles are greatly improved by the use of urea.

Abstract: Provided are organosilica composites based on bis(3-triethoxysilylpropyl)tetrasulfide (TESPTS) or bis(3-triethoxysilylpropyl)disulfide (TESPDS) and containing octadecyltrimethoxy silane (C18TMS) and cetyltrimethylammonium bromide (CTAB), and a method for preparing hollow or porous carbon structures and silica structures using the same. According to the present disclosure, it is possible to obtain hollow or porous carbon structures and silica structures in a more simple and cost-efficient manner. Thus, the resultant structures have a high surface area and a large mesopore volume, so that they may serve as catalyst carriers for fuel cells capable of loading metal catalyst particles having a smaller particle size in a larger amount and in a more homogeneously dispersed state.

Abstract: Disclosed are a method for recycling silica waste and a method for preparing nanoporous material and other valuable silica materials. More specifically, a method for preparing a nanoporous material by recycling silica-containing waste produced from a silica etching process in the synthesis of nanoporous carbon is provided. The present disclosure allows recycling of silica waste in an effective and environment-friendly manner, reduction of consumption of chemical materials, and reduction of chemical waste. Accordingly, the present disclosure enables effective preparation of various valuable nanoporous silica and other silica materials from silica waste released for production of various nanoporous materials.