Korea Institute of Energy Research

Hee-Yeon Kim

Seok-yong Hong

Guk-Hyeon Kwon

Nam-Jo Jeong

Seong-Ok Han

Hong-Soo Kim

Guk Hyeon Kwon

Kwang-Sup Song

Seung-Jae Lee

Young-cheol Park

Jong-Ho Moon

Chang-keun Yi

Jong-Soo Park

Young Cheol Park

Tae-Woo Kim

Jeong-gu Yeo

Doo-won Seo

Bo-Yun Jang

Ji-haeng Yu

Seong Ok Han

Ji Yeon Choi

Jung Hyun Lee

In-sub Han

Dong-Kook Kim

Se-young Kim

Dae Keun Lee

Hyunuk Kim

Yeo-Il Yoon

Younghyun Cho

Ko-Yeon Choo

Dong-hyuk Chun

SeungCheol Yang

Young Jik Youn

Ki Sook Lee

Young-hoon Seong

Sung-Il Jeon

Hong Ran Park

Kwang-shik Myung

Seok-Yong Hong

A nitrogen-doped catalyst for oxidative coupling of methane, which is a catalyst for obtaining a C2 hydrocarbon product with high yield, and a method for manufacturing the catalyst are provided. An embodiment of the present inventive concept relates to a nitrogen-doped catalyst for oxidative coupling of methane having a silica support; and sodium tungstate and manganese supported on the support.

Nitrogen-doped catalyst for oxidative coupling reaction of methane, manufacturing method of nitrogen-doped catalyst for oxidative coupling reaction of methane thereby, and method for oxidative coupling reaction of methane using the same

The present invention relates to an electrochemical cell having a channel-type flow-electrode unit. The channel-type flow-electrode structure according to the present invention, which has at least two channel-type flow-electrode units, can significantly reduce manufacturing costs and installation space by reducing the number of parts while extending the electrode capacity to be suitable for large-scale plants for electricity generation, energy storage, desalination, etc. In addition, the channel-type flow-electrode structure can be applied not only to a capacitive flow-electrode device and/or a redox flow battery device, but also to all of the devices for electricity generation, energy storage, and desalination while moving ions or protons.

Electrochemical cell comprising channel-type flowable electrode units

Disclosed is a method of manufacturing carbonized fine cellulose, which enables the formation of carbonized nano-sized cellulose by subjecting cellulose to drying, carbonization, and pulverization by means of shock waves using ultrasonic waves and microbubbles, thus realizing mass producibility, making it possible to fabricate a carbonized nano-sized material having uniform quality, and reducing the manufacturing costs. The carbonized fine cellulose is in the form of a nano-sized uniform carbon powder, and can thus be utilized as a catalyst support in various forms, such as fuel cell electrodes, electrodes of energy storage devices such as supercapacitors or secondary batteries, catalyst supports for micro-nano hybrid reactors, etc.

Method of preparing minute carbonized cellulose and method of preparing catalyst support using the same

Disclosed herein are porous graphene filters, each consisting of a carbon monoatomic layer having small holes formed therein during the graphene formation, a plurality of the porous graphene filters being used to selectively filter a specific material from a mixture of at least two different materials, a method for manufacturing the same, and a filtering apparatus using the same. The method comprises: separately forming a first graphene filter having a first hole of a first size and a second graphene filter having a second hole of a second size, during deposition of carbon atoms generated from a carbon source for formation of graphene, by substituting the carbon atoms, in part, with a substitution atom generated from a substitution source, the second size being larger than the first size; and arranging the first graphene filter and the second graphene filter in a filter body equipped with an inlet and an outlet.

Method for manufacturing porous graphene filter, porous graphene filter manufactured using same, and filter apparatus using porous graphene filter

Disclosed are a large-scale composite synthesis system, a reactor therefor, and a synthesis method using the same, wherein two or more different samples are vaporized in respective vaporizers, and are then fed into a reactor that has a relatively large transverse cross-sectional diameter compared to the connector for transporting the samples in a gas phase and is maintained at a temperature lower than that of the connector, thus producing a powder composite, the composite being synthesized while being electrostatically attached to an adherend surface.

Large-scale composite synthesis system, reactor and composite synthesis method using the same

Disclosed is a method of forming a nitrogen-doped porous graphene envelope. The method of forming the nitrogen-doped porous graphene envelope includes dissolving a nitrogen precursor in an organic precursor and then vaporizing the resulting precursor to thus simultaneously synthesize the graphene envelope and perform nitrogen doping in a single step.

Method of forming nitrogen-doped porous graphene envelope

The present disclosure relates to a metal-organic framework and a method for preparing the same. In accordance with the present disclosure, a metal-organic framework having large specific surface area can be prepared and the prepared porous material exhibits high carbon dioxide and carbon monoxide adsorption characteristics at room temperature.

Metal-organic frameworks and process of preparing the same

Disclosed are a porous graphene member having through-holes formed therein, a method for manufacturing the porous graphene member, and an apparatus for manufacturing the porous graphene member using the method. The method comprises: introducing a carbon source and a substitution reaction source into a deposition furnace; thermally decomposing the carbon source and the substitution reaction source simultaneously to generate carbon atoms and substitution atoms, respectively, wherein the carbon atoms are deposited on a substrate present within the deposition furnace to form a graphene film consisting of a monoatomic layer structure, and during the deposition of carbon atoms, the substitution atoms not only interfere with covalent bonds between the carbon atoms to cause crystal defects, but also substitute for parts of the carbon atoms to in situ form through-holes in the graphene, thereby creating the porous graphene member; and releasing the porous graphene member from the substrate.

Porous graphene member, method for manufacturing same, and apparatus for manufacturing same using the method

Disclosed herein is a method of preparing an alloy catalyst for fuel cells, which is suitable for mass production and can reduce manufacturing costs. The method includes vaporizing at least two catalyst precursors in separate vaporizers; supplying the at least two vaporized catalyst precursors to a reactor while preventing contact therebetween; and synthesizing an alloy catalyst in the reactor. The method can prepare an alloy catalyst through a one-step process unlike typical multi-step methods for preparing catalysts, and can prepare an alloy catalyst at a much lower temperature than the typical methods for preparing alloys, thereby enabling mass production and cost reduction.

Method of preparing alloy catalyst for fuel cells and alloy catalyst for fuel cells prepared by the same

Disclosed are a metal-carbon hybrid composite having a nitrogen-doped carbon surface and a method of manufacturing the same. More particularly, the present invention relates to a method of manufacturing a metal-carbon hybrid composite, wherein the surface of carbon for the metal-carbon hybrid composite may be doped with nitrogen in a single step using a co-vaporization process, and to a metal-carbon hybrid composite having a nitrogen-doped carbon surface manufactured by the method.

Metal-carbon hybrid composite having nitrogen-doped carbon surface and method for manufacturing the same

A method for preparing a carbon dioxide absorbent based on natural biomass, and a carbon dioxide absorbent based on natural biomass that is prepared by the method. The method utilizes alkali metal or alkaline earth metal components, such as Ca, Ma and K, inherent to a natural plant biomass material. The method can provide a carbon dioxide absorbent with improved performance in an environmentally friendly manner at greatly reduced cost.

Method for preparing carbon dioxide absorbent based on natural biomass and carbon dioxide absorbent based on natural biomass prepared by the same

The present disclosure relates to a catalyst having metal catalyst nanoparticles supported on natural cellulose fibers and a method of preparing the same, whereby natural cellulose fibers are subjected to specific pretreatment to increase a surface area and form defects on the surface thereof and metal catalyst nanoparticles are then supported on the cellulose catalyst support in a highly dispersed state, thereby providing improved catalysis while allowing production of the catalyst at low cost. The catalyst may be utilized for various catalytic reactions.

Catalysts having metal nano-particle catalyst supported on surface-treated natural cellulose fibers and preparation method thereof

A composite synthesis method and apparatus, a vaporizer for the composite synthesis apparatus, a vaporizer heater and a composite. In the composite synthesis apparatus using simultaneous vaporization, two or more vaporizers are heated by heaters such that samples vaporized by the vaporizers are supplied into a reactor to synthesize a composite. The apparatus and method may prepare multiple-metal or metal-carbon heterogeneous composites, and may be applied to various metal- and carbon-based adsorbents, absorbents, gas/liquid separation membranes and various catalyst processes. Further, the composite may be applied to various industrial fields through change in metal components or carbon structures.

Method and apparatus for synthetizing composite using simultaneous vaporization, vaporizer for composite synthesis apparatus, vaporizer heater, and composite

A method of preparing a metal-carbon composite of a core-shell structure through simultaneous vaporization, in which a metal particle constitutes a core and carbon constitutes a shell, with the metal-carbon composite prepared in the form of powder and supported on a supporter, and a metal-carbon composite of a core-shell structure prepared by the same. In these methods, the metal-carbon composite of the core-shell structure is prepared through simultaneous vaporization of metal and carbon precursors and does not require separate post-processing. Further, in the metal-carbon composite of the core-shell structure prepared by these methods, a carbon shell covers a portion or the entirety of a surface of a metal core, whereby the metal particles can be prevented from suffering agglomeration, separation or corrosion when subjected to harsh process conditions at high temperatures for long durations under strong acid and alkali conditions, thereby providing high performance and high durability.

Method for preparing metal-carbon composite of core-shell structure through simultaneous vaporization and metal-carbon composite of core-shell structure prepared thereby

The present subject matter provides a method of manufacturing an electrode for a fuel cell, in which nanocarbons are grown on the surface of a substrate for a fuel cell using a process of simultaneously gasifying a platinum precursor and a carbon precursor, and simultaneously core-shell-structured platinum-carbon composite catalyst particles are highly dispersed between nanocarbons The subject matter also provides an electrode for a fuel cell, manufactured by the method. This method is advantageous in that an electrode for a fuel cell having remarkably improved electrochemical performance and durability can be manufactured by a simple process.

Method for manufacturing electrode for fuel cell comprising nanocarbon and core-shell-structured platinum-carbon composite and the electrode for fuel cell manufactured by the same

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Daejeon, South Korea

Hee-Yeon Kim