Korea Institute of Science and Technology

Gl Materials Inc.

Tae-Hoon Lim

Jonghee Han

Sung Pil Yoon

In-Hwan Oh

Eun Ae Cho

Suk-Woo Nam

Hyoung-Juhn Kim

Seong-Ahn Hong

Suk Woo Nam

Heung Yong Ha

Jong Hyun Jang

Sung Jong Yoo

Dirk Henkensmeier

Hyung Chul Ham

Heung-Yong Ha

Sang Jun Kong

Hee-Young Park

Seong Ahn Hong

Jaeyoung Lee

Sang Young Lee

Sang Youn Lee

Eunae Cho

Seok Keun Koh

Sang Hyun Ahn

Daejin Kim

Yung-Eun Sung

Kug-Seung Lee

Hee-young Park

Namgee Jung

Kwang Soo Lee

Hyung Chui Ham

Beom Seok Kang

Jeung Woo Lee

Juno Shim

Soon-Jong Kwak

Jun Young Han

Sang-Yeop Lee

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

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 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

A partially sulfonated polybenzimidazole based polymer for fuel cell membrane is prepared by copolymerizing monomers of 3,3'-diaminobenzidine, isophthalic acid and 5-sulfoisophthalic acid to obtain a partially sulfonated polybenzimidazole, and doping the partially sulfonated polybenzimidazole with inorganic acid.

Partially sulfonated polybenzimidazole based polymer, method for preparing the same, MEA for fuel cell using the polybenzimidazole based polymer and method for preparing the same

Provided is an MEA for fuel cell containing hygroscopic inorganic material such as TEOS (tetraethylorthosilicate), zirconium propoxide or titanium t-butoxide.

MEA for fuel cell, method for preparing the same and fuel cell using the MEA

The present invention, by coating the polymer electrolyte membranes for fuel cells with inorganic thin films via a PECVD method or a reactive sputtering method, reduces the methanol crossover sizably without seriously reducing the ionic conductivity of polymer electrolyte membranes, thereby, when applied to fuel cells, realizes a high performance of fuel cells. A surface of membrane can be coated with inorganic thin films made of inorganic materials, which are for example silicone oxide, titanium oxide, etc., so as to make composite polymer electrolyte membrane. For coating, plasma enhanced chemical vapor deposition method or reactive method can be used.

Method to manufacture composite polymer electrolyte membranes coated with inorganic thin films for fuel cells

Provided is a reinforced matrix for molten carbonate fuel cell, wherein a mechanical strength of the matrix is increased by adding a reinforcing agent having a low melting point.

Reinfored matrix for molten carbonate fuel cell and method for preparing the same

Disclosed is a catalyst for a partial oxidation reforming reaction of fuel in the form of disk having through-hole. In addition, according to the invention, there is provided a fuel reforming apparatus and method using the catalyst. The catalyst for a partial oxidation reforming reaction of fuel according to the invention makes it possible to progress the partial oxidation reforming reaction of fuel smoothly, to improve the efficiency when reforming the fuel and to simplify the fuel reforming reactor. According to the fuel reforming apparatus and method, since the heat of reaction is efficiently controlled and used, a simple on-off operation, reduction of starting time and a stable operational condition are accomplished, which are indispensably required for a fuel reforming system in fuel cells, such as household, portable and car fuel cells.

Catalyst for partial oxidation reforming of fuel and fuel reforming apparatus and method using the catalyst

Disclosed is an electrode having a novel configuration for improving performance of the electrode used in solid-oxide fuel cells, sensors and solid state devices, in which the electrode providing electron conductivity is coated with ion conductive ceramic ceria film, enabling an electron conductive path and an ion conductive path to be independently and continuously maintained, and additionally extending a triple phase boundary where electrode/electrolyte/gas are in contact, and a method for manufacturing the same. The electrode is manufactured by coating the prefabricated electrode for use in a SOFC or sensor with a porous oxygen ion conductive ceramic ceria film by a sol-gel method, whereby the electron conductive material and ion conductive material exist independently, having a new microstructure configuration with a greatly extended triple phase boundary, thus improving electrode performance. Accordingly, such electrode does not require high cost equipment or starting materials, owing to the sol-gel method by which low temperature processes are possible. Moreover, the electrode microstructure can be controlled in an easy manner, realizing economic benefits, and the electrode/electrolyte interfacial resistance and electrode resistance can be effectively decreased, thereby improving performance of electrodes used in SOFCs, sensors and solid state devices.

Electrode having microstructure of extended triple phase boundary by porous ion conductive ceria film coating and method to manufacture the said electrode

The present invention provides an anode for a Molten Carbonate Fuel Cell (MCFC) and a MCFC including the same, particularly an anode for the MCFC coated by a porous ceramic film, when the invention is used, the wettability of the anode to the molten carbonate used as the electrolyte for the MCFC and the amount of impregnated electrolyte will be greatly improved, and thus is very useful in viewpoint that it can prevent any electrolyte loss that is often observed in the long periods of operation of the MCFC, and maintain a high stability of the cell for an extended period of time, compared with the conventional cell. Also, the present invention itself is applicable to an electrode made of Ni-based alloys or metal compounds, which is expected to be competent MCFC materials nowadays, as well as the electrode made of Ni, Ni&mdash;Cr and Ni&mdash;Al alloy used in the present invention.

Anode for molten carbonate fuel cell coated with porous ceramic films

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Seoul, South Korea

Tae-Hoon Lim