Korea Institute of Science and Technology

Gl Materials Inc.

Eun Ae Cho

Jonghee Han

Hyoung-Juhn Kim

Sung Pil Yoon

Tae Hoon Lim

Suk-Woo Nam

Jong Hyun Jang

Seong Ahn Hong

Heung Yong Ha

Suk Woo Nam

Dirk Henkensmeier

Tae-Hoon Lim

In Hwan Oh

Sung Jong Yoo

In-Hwan Oh

Jaeyoung Lee

Hyung Chul Ham

Seong-Ahn Hong

Soo-Kil Kim

Hee-Young Park

Chang Won Yoon

Yeong Cheon Kim

Sang Jun Kong

Kug-Seung Lee

Hyung Chul Hahm

Kwang Soo Lee

Jin Young Kim

Sang Young Lee

Soo K Kim

Sang Youn Lee

Seok Keun Koh

Sang Hyun Ahn

Yung-Eun Sung

Sun-Hee Choi

Sang Yeop Lee

Shin Ae Song

Dae Ki Choi

Namgee Jung

Hee-young Park

Ui Sik Jeon

Seung Jun Hwang

Hyung Chui Ham

Jeung Woo Lee

Anatoli Maganiouk

Quoc Khanh Dang

Thieu Cam-Anh

Hyoung Juhn Kim

Jun Young Han

Jong Pil Jeong

Jong Hyung Jang

Sung-Goon Kang

Yeon Hye Kwon

Thieu Cam-anh

A polymer electrolyte membrane fuel cell is provided. The polymer electrolyte membrane fuel cell includes a phosphoric acid-doped polyimidazole electrolyte membrane and a complex catalyst. In the complex catalyst, an alloy or mixture of a metal and a chalcogen element is supported on a carbon carrier. The polymer electrolyte membrane fuel cell exhibits further improved long-term operation, power generation efficiency, and operational stability at high temperature. The complex catalyst can be produced by a simple method.

Polymer electrolyte membrane fuel cell including complex catalyst and method for producing the complex catalyst

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

Provided are a perfluorinated sulfonic acid polymer membrane having a porous surface layer, which includes a surface layer and a bottom layer present at the bottom of the surface layer, wherein the surface layer is a porous layer, and the bottom layer is non-porous dense layer, and a method for preparing the same through a solvent evaporation process.

Perfluorinated sulfonic acid polymer membrane having porous surface layer and method for preparing the same

A polybenzimidazole based polymer in which substituted or non-substituted benzyl groups are introduced to the two nitrogen atoms of benzimidazole ring. The benzimidazole ring is not decomposed by the attack of hydroxide ions but shows excellent alkali resistance, and thus maintains high ion conductivity. The polybenzimidazole based polymers are particularly useful for not only solid alkali exchange membrane fuel cells (SAEMFC) but also various industrial fields in which polybenzimidazole based polymers are used.

Dibenzylated polybenzimidazole based polymer and method for preparing the same

Disclosed are a method and an apparatus for an intact evaluation of the unit cells in a fuel cell stack. Since the degradation of the unit cells can be detected intactly, i.e. without disassembly of the stack, the time required for the detection and analysis thereof can be greatly reduced.

Intact method of evaluating unit cells in a fuel cell stack and a device using the same

The present disclosure relates to a method and an apparatus for preparing nanosized metal or alloy nanoparticles by depositing metal or alloy nanoparticles with superior size uniformity on the surface of a powder as a base material by vacuum deposition and then dissolving or melting the base material using a solvent or heat. The method solves the problems of the existing expensive multi-step synthesis method based on chemical reduction and allows effective synthesis of metal or alloy nanoparticles with very uniform size and metal or alloy catalyst nanoparticles supported on carbon at low cost.

Process of preparing carbon-supported metal catalyst by physical deposition

Provided are a ceria-based composition having an undoped or metal-doped ceria and an undoped or metal-doped bismuth oxide, wherein the undoped or metal-doped bismuth oxide is present in an amount equal to or more than about 10 wt % and less than about 50 wt % based on the total weight of the ceria-based composition, and at least one selected from the ceria and the bismuth oxide is metal-doped. The ceria-based composition may ensure high sintering density even at a temperature significantly lower than the known sintering temperature of about 1400&#xb0; C., i.e., for example at a temperature of about 1000&#xb0; C. or lower, and increase ion conductivity as well.

Ceria-based composition including bismuth oxide, ceria-based composite electrolyte powder including bismuth oxide, method for sintering the same and sintered body made thereof

Provided is poly(benzimidazole-co-benzoxazole) having polybenzimidazole to which benzoxazole units are introduced, as a polymer electrolyte material. The polymer electrolyte material has both high proton conductivity and excellent mechanical properties even when it is obtained by in-situ phosphoric acid doping. The polymer electrolyte material may substitute for the conventional phosphoric acid-doped polybenzimidazole in a polymer electrolyte membrane fuel cell, particularly in a high-temperature polymer electrolyte membrane fuel cell.

Poly(benzimidazole-co-benzoxazole) and method for preparing the same

Provided are cardo copolybenzimidazoles, a gas separation membrane using the same and a method for preparing the same. More particularly, provided are cardo copolybenzimidazoles obtained by introducing cardo groups and aromatic ether groups to a polybenzimidazole backbone, a gas separation membrane having significantly improved oxygen permeability by using the same, and a method for preparing the same. The cardo copolybenzimidazoles have improved solubility as compared to the polybenzimidazole polymers according to the related art, show excellent mechanical properties while maintaining thermal stability so as to be formed into a film shape, and provide a gas separation membrane having significantly improved gas permeability, particularly, oxygen permeability.

Cardo copolybenzimidazoles, gas separation membranes and preparation method thereof

Disclosed are an apparatus for portable fuel cell and an operation method thereof, wherein stabilization state after initial operation can be determined using OCV.

Apparatus for portable fuel cells and operating method thereof

Provided are a method of preparing an electrocatalyst for fuel cells in a core-shell structure, an electrocatalyst for fuel cells having a core-shell structure, and a fuel cell including the electrocatalyst for fuel cells. The method may be useful in forming a core and a shell layer without performing a subsequent process such as chemical treatment or heat treatment and forming a core support in which core particles having a nanosize diameter are homogeneously supported, followed by selectively forming shell layers on surfaces of the core particles in the support. Also, the electrocatalyst for fuel cells has a high catalyst-supporting amount and excellent catalyst activity and electrochemical property.

Methods of preparing electrocatalysts for fuel cells in core-shell structure and electrocatalysts

Disclosed is a unit cell of a honeycomb-type solid oxide fuel cell (SOFC) having a plurality of channels. The channels include cathode channels and anode channels. The cathode channels and anode channels are set up alternately in the unit cell. A collector is installed inside each of the cathode channels and the anode channels, and a packing material is packed into the channels having the collector. Disclosed also is a stack including the unit cells and methods for manufacturing the unit cell and the stack.

Unit cell of honeycomb-type solid oxide fuel cell, stack using the unit cell and method manufacturing the unit cell and stack

Disclosed herein is an electrolyte membrane for a fuel cell. The electrolyte membrane includes a blend of polymers with different degrees of sulfonation. The electrolyte membrane can exhibit excellent effects such as improved long-term cell performance and good long-term dimensional stability while at the same time solving the problems of conventional hydrocarbon electrolyte membranes. Further disclosed are a membrane-electrode assembly and a fuel cell including the electrolyte membrane.

Electrolyte membrane for fuel cell including blend of polymers with different degrees of sulfonation, and membrane-electrode assembly and fuel cell including the same

Disclosed is a Ni&#x2014;Al alloy anode for molten carbonate fuel cell made by in-situ sintering the Ni&#x2014;Al alloy. Further, disclosed is a method for preparing the same comprising steps of preparing a sheet with Ni&#x2014;Al alloy powders (S1); and installing the sheet in a fuel cell without any heat treatment for sintering the Ni&#x2014;Al alloy in the sheet and then in-situ sintering the Ni&#x2014;Al alloy in the sheet during a pretreatment process of the cell with the sheet (S2), wherein a reaction activity of the Ni&#x2014;Al alloy anode can be maintained, the method is simple and economic, and a mass production of the Ni&#x2014;Al alloy anode and a scale-up in the method are easy.

Ni-Al alloy anode for molten carbonate fuel cell made by in-situ sintering

Disclosed are a multi-layered electrode for fuel cell and a method for producing the same, wherein the electrode can be operated under non-humidification and normal temperature, the flooding of the electrode catalyst layer can be prevented, and the long-term operation characteristic can be increased due to the prevention of the loss of the electrode catalyst layer.

Multi-layered electrode for fuel cell and method for producing the same

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Jungnang-gu, South Korea

Eun Ae Cho