Samsung Sdi Co., Inc.

Korea Atomic Energy Research Institute

Kolon Industries, Inc.

Geun-Seok Chai

Myoung-Ki Min

Hee-Tak Kim

Tae-Yoon Kim

Sung-Yong Cho

Sang-Il Han

Kah-Young Song

Jin-Hwa Lee

Soon-Ki Kang

Chan Kwak

Alexey Alexandrovichserov

Soon-Cheol Shin

Chan-Hee Park

Go-Ul Choi

Sang Il Han

Sang-Ii Han

A membrane-electrode assembly for a fuel cell, the membrane-electrode assembly including an electrolyte membrane; an edge protective layer located at generally an edge of the electrolyte membrane; and a catalytic layer including a plate portion contacting the electrolyte membrane and a protruding portion protruding from the plate portion and contacting the edge protective layer.

Membrane-electrode assembly with a protective layer, and fuel cell stack and fabricating method of membrane-electrode assembly

A fuel cell stack includes at least one membrane electrolyte assembly having an electrolyte membrane, an anode on a first surface of the electrolyte membrane, and a cathode on a second surface opposite to the first surface of the electrolyte membrane; and at least one supply member coupled to the electrolyte membrane and configured to supply a conductive material to the electrolyte membrane.

Fuel cell stack

A catalyst layer composition for a fuel cell includes an ionomer cluster, a catalyst, and a solvent including water and polyhydric alcohol; and an electrode for a fuel cell includes a catalyst layer comprising an ionomer cluster having a three-dimensional reticular structure, and a catalyst, a method of preparing a electrode for a fuel cell includes a catalyst layer comprising an ionomer cluster having a three-dimensional reticular structure, and a catalyst, and a membrane-electrode assembly for a fuel cell including the electrode and a fuel cell system including the membrane-electrode assembly.

Catalyst layer composition for fuel cell, electrode for fuel cell, method of preparing electrode for fuel cell, membrane-electrode assembly for fuel cell, and fuel cell system using the membrane-electrode assembly

An electrode for a fuel cell is disclosed. The electrode may include an electrode substrate with a conductive substrate, carbon particles, and a catalyst layer disposed on the electrode substrate. The electrode substrate may include a pore having an average diameter of about 20 &#x3bc;m to about 40 &#x3bc;m and porosity of about 30 volume % to about 80 volume % based on the total volume of the electrode substrate. A membrane-electrode assembly including the electrode and a fuel cell system including the membrane electrode assembly are also disclosed.

Electrode for fuel cell, and membrane-electrode assembly and fuel cell system including same

An electricity generator includes a membrane electrode assembly; a separator coupled to the membrane electrode assembly and including a first region and a second region; and a thermal conductor on one of the first region and the second region.

Electricity generation unit and fuel cell stack

A fuel cell separator and a fuel cell system including the same. The separator includes a main body including a plurality of cell barriers and a flow channel disposed between the cell barriers, and a hydrophilic surface-treatment layer disposed on the bottom surface of the flow channel of the main body. The hydrophilic surface-treatment layer disposed on the bottom surface of the flow channel has a contact angle less than a contact angle of a side surface of at least one of the cell barriers by approximately 10&#xb0; to approximately 60&#xb0;.

Separator for fuel cell, and fuel cell system including same

A membrane-electrode assembly (MEA) for a fuel cell includes a fuel cell electrolyte membrane, an anode disposed at a first side of the electrolyte membrane, and a cathode disposed at a second side of the electrolyte membrane, wherein the cathode has a thickness and an area, the cathode area extending in a plane substantially parallel to a major surface of the electrolyte membrane, the cathode area includes a central area and a peripheral area, the peripheral area extending to lateral edges of the cathode, the central area includes hydrophilic portions and hydrophobic portions, the peripheral area includes hydrophilic portions and hydrophobic portions, and the central area is more hydrophobic than the peripheral area.

Membrane-electrode assembly for fuel cell and fuel cell stack with the same

A fuel cell catalyst includes a platinum-iron (Pt&#x2014;Fe) alloy having an ordered or disordered face-centered cubic structure or face-centered tetragonal structure. The face-centered cubic structure has a lattice constant ranging from about 3.820 &#x212b; to about 3.899 &#x212b; (or from about 3.862 &#x212b; to about 3.880 &#x212b;), and the face-centered tetragonal structure has a first lattice constant ranging from about 3.800 &#x212b; to about 3.880 &#x212b; (or from about 3.810 &#x212b; to about 3.870 &#x212b;) and a second lattice constant ranging from about 3.700 &#x212b; to about 3.810 &#x212b; (or from about 3.710 &#x212b; to about 3.800 &#x212b;). A membrane-electrode assembly can improve cell performance by including the above catalyst having the relatively high activity and selectivity for an oxidant reduction in at least one of an anode or a cathode, and can increase lifespan by inhibiting catalyst poisoning.

Fuel cell catalyst, method of preparing same, and membrane-electrode assembly for fuel cell and fuel cell system including same

A membrane electrode assembly for a fuel cell that secures a flow path of a separator while preventing generation of a pin-hole. The membrane electrode assembly includes an electrolyte membrane for a fuel cell, a microporous layer that is disposed at both surfaces of the electrolyte membrane, a backing layer that is disposed on the microporous layer, and a circumferential edge protective layer that is disposed at an circumferential edge of the electrolyte membrane. An end portion of the microporous layer is positioned further inside of the membrane electrode assembly than an end portion of the backing layer. The circumferential edge protective layer is inserted between the backing layer and the electrolyte membrane.

Membrane electrode assembly for fuel cell and fuel cell stack

A catalyst for a fuel cell including a carrier and an active metal dispersion that is supported in the carrier is disclosed. The catalyst may have a dispersity (Dp) represented by General Formula 1 and that ranges from between about 0.01 to about 1.0.Dispersity (Dp)={/()}*()&#x2003;&#x2003;[General Formula 1]In the General Formula 1, X, X, X, and B are defined the same as described in the specification. A membrane-electrode assembly, and a fuel cell system having the catalyst are also disclosed.

Catalyst for fuel cell, membrane-electrode assembly including same, and fuel cell system including same

A fuel cell stack includes membrane-electrode assemblies and separators that are closely disposed to both sides of the membrane-electrode assembly. Each membrane-electrode assembly includes an electrolyte membrane, an anode electrode that is formed on one surface of the electrolyte membrane, a cathode electrode that is formed on the other surface of the electrolyte membrane, and a protective layer formed at an oxidant inlet region where oxidant is first injected into the respective cathode electrode.

Fuel cell stack having a membrane electrode assembly with a protective layer at an oxidant inlet region

A membrane-electrode assembly for a fuel cell is disclosed. The membrane-electrode assembly may include a polymer electrolyte membrane, an adhesive layer disposed on the polymer electrolyte membrane and a catalyst layer formed, as part of the adhesive layer. The polymer electrolyte membrane, the adhesive layer and the catalyst layer may be positioned between a cathode substrate and an anode substrate. The cathode may include a cathode substrate and the anode may include an anode substrate. A method for manufacturing a membrane-electrode assembly and a system incorporating a membrane-electrode assembly are also disclosed.

Membrane-electrode assembly for fuel cell, method of manufacturing membrane-electrode assembly for fuel cell, and fuel cell system

A fuel cell stack including an electricity generating unit and a pair of end plates is disclosed. The electricity generating unit includes membrane-electrode assemblies and separators interposed between the membrane-electrode assemblies. The separators have recess portions formed on side faces thereof and may be configured to hold an external device for replacement of a single membrane-electrode assembly within the fuel cell stack. The end plates are located sandwiching the electricity generating unit by using fastening members to press the electricity generating unit.

Replacement device for membrane-electrode assembly of fuel cell stack with separators having recess portions

A method of preparing a fuel cell catalyst includes preparing a catalyst precursor solution by mixing a catalyst precursor and a solvent, and subjecting the catalyst precursor solution to radiation of electron beams having energy of less than or equal to 1 MeV. A method of preparing the fuel cell catalyst uses electron beams having low energy so that it can provide a desirable catalyst uniformly in a simple and economical process, as well as releasing few X-rays so that the catalyst can be mass produced.

Method of preparing catalyst for fuel cell

An electrode catalyst for a fuel cell including a carbon-based carrier and an active metal supported in the carrier, for example, an electrode catalyst for a fuel cell includes a carrier and an active metal supported in the carrier, wherein the electrode catalyst has an X value of 95 to 100% in Equation 1.(%)=(XPS measurement value)/(TGA measurement value)&#xd7;100&#x2003;&#x2003;[Equation 1]

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Yongin-si, South Korea

Geun-Seok Chai