Abstract:
PROBLEM TO BE SOLVED: To provide a negative electrode active material of high crystallinity, high uniformity and high purity self-supporting metal sulfide-based two-dimensional nanostructure applicable to a secondary battery, and to provide a production method therefor.SOLUTION: The negative electrode active material grows directly, as a metal sulfide-based two-dimensional nanostructure, on a metal substrate by peeling an aggregate composed of a metal sulfide-based material. The production method thereof includes a step for producing an aggregate composed of a metal sulfide-based material, a step for inserting the aggregate into a tube in an electric furnace for pulse laser vapor deposition, a step for inserting a metal substrate into a tube and locating the metal substrate separately from the aggregate, a step for lowering the pressure in the tube to vacuum state and raising the temperature of the electric furnace to 590-610°C, and a step for peeling the aggregate by injecting pulse laser into the tube. The metal sulfide-based material is grown, as a two-dimensional nanostructure, directly on the metal substrate.
Abstract:
PROBLEM TO BE SOLVED: To provide a solid oxide fuel cell containing a nanostructure composite air electrode, and to provide a manufacturing method therefor.SOLUTION: The solid oxide fuel cell includes a) a fuel electrode support, b) a solid electrolyte layer formed on the fuel electrode support, and c) a nanostructure composite air electrode layer formed on the solid electrolyte layer. In the composite air electrode layer, an electrode material and an electrolyte material are mixed in molecule units, but they do not react nor be dissolved to form a single material. A manufacturing method therefor is also provided. A high performance fuel cell capable of low temperature operation and exhibiting excellent stability can be provided.
Abstract:
PROBLEM TO BE SOLVED: To provide a color conversion luminescent sheet and a method of fabricating the same.SOLUTION: The invention provides a color conversion luminescent sheet and a method of fabricating the same, the color conversion luminescent sheet including: an optical sheet having a plurality of protrusions and depressions on a surface thereof; a conductive layer disposed on another surface of the optical sheet; a color conversion luminescent layer deposited on the upper surface of the conductive layer and comprising a mixture of nanofibers and nanobeads having a binder resin and a color conversion luminescent material; and a protective layer on the upper surface of the color conversion luminescent layer, the protective layer having a stacked structure including an organic polymer protective layer and an inorganic thin protective layer.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for reprocessing a metal oxide positive electrode active material for a lithium secondary battery and a method for synthesizing a metal oxide positive electrode active material for a lithium secondary battery by the method for reprocessing.SOLUTION: A method for reprocessing a metal oxide positive electrode active material for a lithium secondary battery according to the present invention includes the steps of: (a) dissolving a positive electrode active material from a waste lithium secondary battery using a sulfuric acid solution containing sulfurous acid gas to form a metal ion-containing solution; (b) injecting a sodium hydroxide solution and an aqueous ammonium solution in the metal ion-containing solution to form an electrode active material precursor; and (c) further filtrating, drying and grinding the electrode active material precursor, thus to obtain a solid-state positive electrode active material precursor. A method for synthesizing a metal oxide positive electrode active material for a lithium secondary battery according to the present invention comprises a step of mixing the electrode active material precursor formed by the method for reprocessing with lithium carbonate or lithium hydroxide, followed by heat treatment, to form a metal oxide positive electrode active material.
Abstract:
PROBLEM TO BE SOLVED: To provide a virtual experimental apparatus for nano element design, and to provide a method therefor.SOLUTION: A virtual experimental apparatus 10 for nano element design includes: a virtual test piece determination unit 100 which determines a virtual experiment material for designing a nano element; a virtual process experiment unit 200 which applies one or more processes to the virtual experiment material determined in the virtual test piece determination unit; and a virtual process analysis unit 300 which analyzes results of each process applied to the virtual experiment material in the virtual process experiment unit. The virtual process analysis unit further includes a multilevel analysis unit which analyzes the results of the processes with one or more particle levels as a reference.
Abstract:
PROBLEM TO BE SOLVED: To provide an object material recognition device and its method.SOLUTION: The object material recognition device includes: a video camera part (100) for imaging a spatial image including various objects that are present in space; an exploring radar part (110) for irradiating the object with incident waves, and receiving space radar information including respective surface reflected waves of surfaces of the objects and respective internal reflected waves returning from the inside of the objects; an information preservation part (140) for preserving reference physical property information respectively corresponding to materials of the objects; and a material recognition processing part (150) for recognizing the material information of each object by utilizing the reference physical property information in the information preservation part (140), the spatial image provided in the video camera part (100) and the space radar information provided in the exploring radar part (110).
Abstract:
A novel and improved method for simultaneously producing 2,4,6-trisilaheptane of the following formula (I) and 1,3-disilabutane of the following formula (II), which are the starting material essential for forming silicon polymers: wherein, R is methyl group or chloro group. (I) (II) The method is characterized by reacting silicon and chloromethylsilanes of the following formula (III) at 250 DEG C.-350 DEG C. and in the presence of copper as a catalyst, exclusively or together with cadmium powder as a co-catalyst. (III)
Abstract:
A polycyanamide compound represented by the general formula (I): (II) wherein A is X is an integer ranging from 10 to 30. This polycyanamide compound of the formula (I) is a photoelectric material and, in this respect, can be used for photovoltaic cells, macromolecular cells and functional elements such as photo sensors.
Abstract:
A "microtuberogenic" form of potatoes can give potato microtubers, e.g. of the "Superior" variety, which can give crop yields comparable with those for natural seed potatoes.
Abstract:
A process for preparing para-aminophenol from nitrobenzene by utilizing electrochemical synthesizing method in high yield for dissolution or dispersion of nitrobenzene in electrolytic bath in which working electrodes are constituted with multi-rotating disk electrode having a plurality of disk electrode and solid polymer electrolyte electrode.