Hyundai Motor Company

Snu Rdb Foundation

Seoul National University

Institute for Basic Science

Korea Institute of Science and Technology

The Industry & Academic Cooperation in Chungnam National University (iac)

Yung-Eun Sung

Jae Seung Lee

Tae-Yeol Jeon

Sung Jong Yoo

Nak Hyun Kwon

Jungjin Park

Chunjoong Kim

Hee-young Park

Kug-Seung Lee

Hyoung-Juhn Kim

Jong Hyun Jang

Suk Woo Nam

Hee-Young Park

Dirk Henkensmeier

Eun Ae Cho

Taeghwan Hyeon

Hyung Chul Ham

Tae-Hoon Lim

Inchul Hwang

Heejong Shin

Ju Wan Lim

Yong-Hun Cho

Jae-Hyuk Park

Bumwook Roh

Young-Hoon Chung

Jong Sig Lee

Byoung-Hoon Lee

Euiyeon Jung

A catalyst for producing hydrogen peroxide and a preparation method therefor are provided. The catalyst for producing hydrogen peroxide according to the embodiments of the present invention comprises a carbon-based support and a catalyst moiety that is bonded to the carbon-based support and comprises an M-N bonding structure (Mrepresents a transition metal atom). The method for preparing a catalyst for producing hydrogen peroxide according to the embodiments of the present invention comprises preparing a carbon-based support, providing a transition metal atom (M) to the carbon-based support, and doping nitrogen into the carbon-based support.

Catalyst for producing hydrogen peroxide, and preparation method therefor

Provided is an in-situ X-ray analysis apparatus including a potentiostat connected to an in-situ electrochemical cell and configured to adjust voltage, current, and time of the in-situ electrochemical cell or to record information regarding voltage, current, resistance, capacity, and time information of the in-situ electrochemical cell; an X-ray analysis apparatus configured to obtain X-ray diffraction information regarding the in-situ electrochemical cell; and a controller connected to the X-ray analysis apparatus and the potentiostat and configured to provide or receive signals to or from the X-ray analysis apparatus and the potentiostat.

Analysis apparatus interlocking in-situ x-ray diffraction and potentiostat and analyzing methods using the same

A lithium-sulfur secondary battery includes a cathode current collector and a cathode electrode on the cathode current collector. The cathode electrode includes a porous carbon interlayer electrode including a plurality of carbon fibers, metal sulfide catalyst particles dispersed and positioned on the porous carbon interlayer electrode, and sulfur-based active material particles dispersed on the porous carbon interlayer electrode to be attached thereto and including sulfur.

Lithium-sulfur secondary battery

The present disclosure relates to a PtAu nanoparticle catalyst heat-treated in the presence of carbon monoxide (CO) and a method for preparing same. Since the PtAunanoparticle catalyst heat-treated under CO atmosphere has high Pt surface area and superior oxygen reduction reaction (ORR) activity, a high-efficiency, high-quality fuel cell can be achieved by applying the catalyst to a fuel cell.

PtAu nanoparticle catalyst heat-treated in the presence of CO and method for manufacturing the same

The present invention provides a method of synthesizing a nano-sized transition metal catalyst on a carbon support, including dissolving a stabilizer in ethanol thus preparing a mixture solution, adding a support to the mixture solution thus preparing a dispersion solution, dissolving a transition metal precursor in ethanol thus preparing a precursor solution, mixing the precursor solution with the dispersion solution with stirring, and then performing reduction, thus preparing the nano-sized transition metal catalyst. This method enables the synthesis of transition metal nanoparticles supported on carbon powder having a narrow particle size distribution and a wide degree of dispersion through a simple process, and is thus usefully applied to the formation of an electrode material or the like of a fuel cell.

Method of preparing nano-sized catalyst on carbon support

Disclosed is a method for preparing nickel or palladium nanoparticles supported on a carbon support. To a mixture solution wherein a stabilizer is dissolved in 1,2-propanediol, a carbon support is added to prepare a dispersion. Then, a precursor solution wherein a nickel or palladium precursor dissolved in 1,2-propanediol is mixed therewith and stirred. Then, nickel or palladium nanoparticles supported on the carbon support are prepared by reduction. The disclosed method for preparing nickel or palladium nanoparticles supported on a carbon support allows preparation of nanoparticles with narrow particle size distribution and good dispersibility through a simple process and the resulting nickel or palladium nanoparticles may be usefully applied, for example, as electrode materials of fuel cells.

Method for preparing nano-sized metal particles on a carbon support

The present invention features a method for preparing core-shell nanoparticles supported on carbon. In particular, the present invention features a method for preparing core-shell nanoparticles supported on carbon, including: dispersing core nanoparticle powder supported on carbon in ethanol; adding a metal precursor which forms a shell and hydroquinone thereto; and mixing and reducing the same. Preferably, the disclosed method for preparing core-shell nanoparticles supported on carbon enables coating of transition metal nanoparticles including platinum on the surface of core metal nanoparticles at a monolayer level. Prepared core-shell nanoparticles of the present invention may be useful as catalysts or electrode materials of fuel cells.

Synthesis methods of core-shell nanoparticles on a carbon support

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Seoul, South Korea

Yung-Eun Sung