Korea Institute of Science and Technology

Seong Ahn Hong

Tae Hoon Lim

Suk-Woo Nam

Sung Pil Yoon

In Hwan Oh

Eun Ae Cho

Jonghee Han

Heung Yong Ha

Hyoung-Juhn Kim

Jaeyoung Lee

Soo-Kil Kim

Suk Woo Nam

In-Hwan Oh

Jong Hyun Jang

Yeong Cheon Kim

Tae-Hoon Lim

Hyung Joon Choi

Kwang Soo Lee

Hyung Chul Hahm

Sung Jong Yoo

Seong M Jo

Dirk Henkensmeier

Sang Youn Lee

Sung-Yeon Jang

Han-Ik Joh

Ho In Lee

Sang Yeop Lee

Shin Ae Song

Hyung Chui Ham

Seung Jun Hwang

Jae Hyung Cho

Jeung Woo Lee

Seung-Goo Kim

Ui Sik Jeon

Hyeung Dae Moon

Sung-Goon Kang

Jong Hyung Jang

Jong Pil Jeong

Thieu Cam-Anh

Thieu Cam-anh

Disclosed are a platinum (Pt)-free, palladium (Pd)-yttrium (Y) alloy catalyst having superior oxygen reduction reaction activity and stability, a method for preparing the same, and a fuel cell including the catalyst. Since the Pt-free Pd&#x2014;Y catalyst is inexpensive, it may be usefully applicable for fuel cells, particularly polymer electrolyte membrane fuel cells.

Pd-Y alloy catalyst, method for preparing the same, and fuel cell comprising the catalyst

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

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

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

A membrane-electrode assembly (MEA) is prepared by a low-temperature transfer method. A binder-free carbon layer is formed on a transfer substrate so as to avoid decreased performance due to the formation of a skin layer caused by the interfacial segregation of the ionomer or binder.

Method for preparing membrane electrode assembly using low-temperature transfer method, membrane electrode assembly prepared thereby, and fuel cell using the same

Disclosed is a method for fabricating a carbon material, by which carbon fibers or carbon tubes, particularly branched carbon fibers or carbon tubes, are obtained via a so-called self-growing process without using external carbon sources. The carbon material obtained by the method has a large specific surface area and further includes a metal catalyst, and thus may be used in cell materials for a fuel cell or secondary battery, hydrogen storage devices, capacitors, solar cells, display panel or the like.

Method of fabricating carbon material, carbon material prepared by the method, cell material and apparatus using 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

Disclosed is a membrane-electrode assembly (MEA) that prevents an electrolyte membrane from being damaged upon the fabrication of a single cell or a stack of fuel cells. The MEA further includes a guard gasket interposed between conventional gaskets, wherein the guard gasket has a thickness corresponding to 70%-95% of the thickness of the electrolyte membrane. The MEA ensures mechanical protection of the electrolyte membrane, and thus prevents the electrolyte membrane from being damaged by an excessive binding pressure upon the fabrication of a single cell or a stack of fuel cells. Furthermore, the contact resistance between the electrolyte membrane and the catalyst layer and the contact resistance between the gas diffusion layer and the catalyst layer can be minimized, thereby improving the quality of a fuel cell.

Membrane-electrode assembly including guard gasket

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

Disclosed is a separator for a fuel cell made of a metal plate comprising both a cooling water flow field and a gas flow field formed on each surface thereof, wherein the separator consists of the joined metal plates for the cooling water flow fields to face each other, the surfaces of the joined metal plates are coated with TiN, a polymer electrolyte membrane fuel cell comprising the separator and a method for manufacturing the separator.

Separator for fuel cell using a metal plate coated with titanium nitride, method for manufacturing the same, and polymer electrolyte membrane fuel cell comprising the separator

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 reinforced matrix for a molten carbonate fuel cell comprising a porous aluminum support and a lithium aluminate tape-cast on the porous aluminum support. Further, disclosed is a method for preparing the molten carbonate fuel cell comprising the reinforced matrix comprising steps of tape-casting a lithium aluminate on a porous aluminum support so as to prepare a reinforced matrix (S), making a unit cell or a stack of the unit cells using the reinforced matrix (S) and heat treating the unit cell or the stack so as to oxidize aluminum in the support into lithium aluminate (S). According to the present invention, the method is simple and economic, and the mass production of the matrix is easy, and strength of the matrix can be increased effectively and therefore there is no worry about fracture or crack.

Reinforced matrix for molten carbonate fuel cell using porous aluminum support and method for preparing the molten carbonate fuel cell comprising the reinforced matrix

An internal reforming molten carbonate fuel cell having a membrane for intercepting carbonate vapor and hydrated vapor is disclosed. The intercepting membrane is made from nickel or nickel alloy which has a high electrical conductivity, corrosion resistant property in an anode environment, and a low affinity for the carbonate vapor. Due to the presence of the intercepting membrane, the transfer of the carbonate vapors and hydrated vapors to the internal reforming catalyst is markedly retarded to prolong the catalytic activity. As a result, a longer operating molten carbonate fuel cell can be obtained.

Growing community of inventors

Seoul, South Korea

Seong Ahn Hong