Abstract: A method of removing contaminants from a fuel cell catalyst electrode. The method includes providing a getter electrode and a fuel cell catalyst electrode having at least one contaminant to a bath and applying a voltage sufficient to drive the contaminant from the fuel cell catalyst electrode to the getter electrode. Methods of removing contaminants from a membrane electrode assembly of a fuel cell and of improving performance of a fuel cell are also provided.

Abstract: A method of removing contaminants from a fuel cell catalyst electrode. The method includes providing a getter electrode and a fuel cell catalyst electrode having at least one contaminant to a bath and applying a voltage sufficient to drive the contaminant from the fuel cell catalyst electrode to the getter electrode. Methods of removing contaminants from a membrane electrode assembly of a fuel cell and of improving performance of a fuel cell are also provided.

Abstract: A method of making an electrode catalyst material using aqueous solutions. The electrode catalyst material includes a support comprising at least one transition metal and at least one chalcogen disposed on a surface of the transition metal. The method includes reducing a metal powder, mixing the metal powder with an aqueous solution containing at least one inorganic compound of the chalcogen to form a mixture, and providing a reducing agent to the mixture to form nanoparticles of the electrode catalyst. The electrode catalyst may be used in a membrane electrode assembly for a fuel cell.

Abstract: A methanol-tolerant cathode catalyst and a membrane electrode assembly for fuel cells that includes such a cathode catalyst. The cathode catalyst includes a support having at least one transition metal in elemental form and a chalcogen disposed on the support. Methods of making the cathode catalyst and membrane electrode assembly are also described.

Abstract: A digital image transmitter is disclosed herein. The digital image transmitter includes: a sender for transforming a plurality of channels of electrical signals output from a computer to a single channel of optical signal and sending the single channel of optical signal; an optical cable provided with a single optical fiber and sending the single channel of optical signal of the sender through the optical fiber; and a receiver for recovering the single channel of optical signal transmitted through the optical cable to the plurality of channels of electrical signals and outputting the electrical signals to a digital image display device. Therefore, the present invention is capable of increasing productivity and reducing manufacturing and installation costs by simplifying a manufacturing process. Further, the present invention is capable of stably transmitting a high-resolution digital image signal since the skew does not generated during long distance transmission.

Abstract: Provided is a Pt—Ru based quaternary metal anode catalyst for a direct methanol fuel cell (DMFC). The Pt—Ru based quaternary metal anode catalyst has high activity to methanol oxidation and strong resistance to catalyst poisoning due to carbon monoxide (CO), which is a byproduct of the methanol oxidation. Therefore, the Pt—Ru based quaternary metal anode catalyst can give high power density and can replace existing commercial catalysts.

Abstract: A mobile phone capable of deleting a sent short message stored in a receiver's mobile phone and a method of transmitting and deleting a short message using the same are provided. In a method of transmitting and deleting a short message, a sender's mobile phone generates a short message, transmits it, and stores its transmission-related information. A receiver's mobile phone stores the short message. The sender's mobile phone transmits a delete request message to the receiver's mobile phone, requesting deletion of the short message. The receiver's mobile phone searches for the short message in response to the delete request message and deletes the short message from a storage area.

Abstract: Provided is a Pt—Ru based quaternary metal anode catalyst for a direct methanol fuel cell (DMFC). The Pt—Ru based quaternary metal anode catalyst has high activity to methanol oxidation and strong resistance to catalyst poisoning due to carbon monoxide (CO), which is a byproduct of the methanol oxidation.

Abstract: An optical connector module includes: a light emitting device which emits light and a light receiving device which receives light to convert an optical signal into an electrical signal; a connector including an optical fiber for light transmission and an optical fiber for light reception; a housing for coupling the optical module to the connector; and a light transmission device which is installed in the housing.

Abstract: An optical device module including an optical fiber for transmitting light, an optical device for receiving light transmitted through the optical fiber, and a lens member installed between the optical fiber and the optical device, for focusing the light emitted from the optical fiber to the optical device, the lens member having a flat plane facing the optical device and a semi-spherical convex plane facing an end of the optical fiber, and the lens member including a concave portion having a predetermined curvature, for transmitting incident light, formed in the center of the convex plane, a light transmitting region corresponding to the concave portion provided in the center of the flat plane, a first reflecting portion formed on the portion of the convex plane excluding the concave portion, and a second reflecting portion formed on the portion of the flat plane excluding the light transmitting region.