Korea Institute of Science and Technology

Hyundai Motor Company

Seong-Ahn Hong

In-Hwan Oh

Heung Yong Ha

Suk-Woo Nam

Tae-Hoon Lim

Jonghee Han

Sung Pil Yoon

Eun Ae Cho

Heung-Yong Ha

Sang Jun Kong

Hyoung-Juhn Kim

Suk Woo Nam

Tae Hoon Lim

Tae Won Lim

Soo Whan Kim

Jong Hyun Lee

Jae Jun Ko

In Hwan Oh

Ki Chun Lee

Ki Young Lee

Jong Myeon Lee

Hyung Chul Ham

Eunae Cho

Soo-Kil Kim

Daejin Kim

Han-Ik Joh

Beom Seok Kang

Sang-Yeoul Ahn

Jeung Woo Lee

Ki-Chun Lee

Hung-Young Ila

Tae Jung Ha

Soon-Jong Kwak

Juno Shim

In-Whan Oh

Yong-Chul Lee

Anatoli Maganiouk

Tae-Won Lim

In-Hwan Oii

Seock-Jac Shin

Sang-Yeop Lee

Se-Kyu Park

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

Disclosed is a hybrid-type power supplying apparatus which may use a fuel cell device as a main power supplier for a robot and a rechargeable battery as an auxiliary power supplier for the robot. In the hybrid-type power supplying apparatus, when the power consumption of the robot exceeds the selected amount of power generation of the fuel cell device, the loads of the rechargeable battery and the fuel cell stack can be managed in such a manner that power is supplied from the rechargeable battery to the robot as an auxiliary power for the robot supplementing the main power for the robot.

Hybrid type power supplying apparatus

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

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

A manufacturing method of Membrane-Electrode-Gasket Assemblies (MEGAs) used for polymer electrolyte fuel cells (PEFCs) is described wherein a polymer electrolyte membrane is formed directly on a electrode. A typical PEFC is constructed by assembling membrane-electrode assembly (MEA), gaskets, and separators. According to the invented method, PEFC is fabricated by assembling separators and MEGA, into which MEA and a gasket are integrated. Compared to the conventional MEA-gasket assemblies, MEGAs are easy to handle and can be mass-produced via a manufacturing process in a series. Moreover, employing MEGAs improves PEFC performance since the membrane thickness of MEGAs is lower than that of the conventional MEA-gasket assemblies.

Method of preparing membrane-electrode-gasket assemblies for polymer electrolyte fuel cells

A method for operating a polymer electrolyte membrane fuel cell at temperatures below the freezing point of water and an apparatus thereof are provided to prevent damage and performance degradation of the membrane-electrode assemblies. Non-humidified gas flows for several seconds before temperature of the polymer electrolyte membrane fuel cell falls below the freezing temperature of water when operation of the polymer electrolyte membrane fuel cell stops. Simultaneously, anode of the polymer electrolyte membrane fuel cell is filled with a solution having a low freezing point to prevent the temperature of a polymer electrolyte membrane fuel cell falling below the freezing point of water due to the lower ambient temperature in the winter. When the polymer electrolyte membrane fuel cell is restarted, the cell performance is not degraded reflecting that the present invention stably preserves the fuel cell.

Method and apparatus for operating polymer electrolyte membrane fuel cell below the freezing point of water

In a method for manufacturing Ni&#x2014;Al alloy powders for electrode materials of fuel cells, in which, using aluminum chloride (AlCl) as a catalyst, powders of Ni and Al, that have been used as electrode materials, are chemically reacted with each other to diffuse the Al into the Ni powders, so that Ni&#x2014;Al alloy powders can be manufactured at a low temperature below fusion points of Ni and Al while maintaining a shape and a size of the existing Ni powders as they are, thus providing a manufacturing process of Ni&#x2014;Al alloy powders that is simple, economical, compatible in working, and ready for scale-up, and in which a conventional manufacturing process of electrode based on Ni is used as it is, so that large sized electrode is manufactured.

Method for manufacturing Ni-Al alloy powders for fuel cells using aluminum chloride

The present invention relates to a humidifier for humidifying reactant gases for a polymer electrolyte fuel cell system, and more particularly, to the humidifier for humidifying reactant gas which adjusts an amount of water for humidification while reducing electric power consumption and size, thereby maintaining an optimal temperature and humidity of the reactant gas supplied to a polymer electrolyte fuel cell. The humidifier for humidifying reactant gases comprises a humidification vessel connected to a reactant gas inlet pipe for supplying reactant gases thereto, a water inlet pipe for supplying water thereto, and a reactant gas supplying pipe for supplying the humidified reactant gas to the fuel cell are connected, respectively, and a sprayer which is installed in the humidification vessel and finely sprays the reactant gases and water which are supplied to the humidification vessel.

Humidifier for humidifying reactant gases for a polymer electrolyte fuel cell system

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

Seong-Ahn Hong