CATALYST FOR FUEL CELL, METHOD FOR MANUFACTURING SAME, AND MEMBRANEELECTRODE ASSEMBLY COMPRISING SAME

    公开(公告)号:US20220263099A1

    公开(公告)日:2022-08-18

    申请号:US17625806

    申请日:2020-12-23

    Inventor: Jung Ho KIM

    Abstract: Disclosed are a catalyst for a fuel cell having excellent performance and durability, a method for manufacturing same, and a membrane-electrode assembly comprising same. The catalyst for a fuel cell of the present invention comprises: a support; and PtCo alloy particles supported on the support, wherein the PtCo alloy particles comprise a transition metal-doped or transition metal-partially alloyed surface that is modified with at least one transition metal selected from the group consisting of V, Cr, Mn, Fe, Ni, Cu, W, and Mo, or a transition metal-doped or transition metal-partially alloyed internal region including the transition metal.

    HUMIDIFIER FOR FUEL CELL AND METHOD FOR MANUFACTURING SAME

    公开(公告)号:US20220255092A1

    公开(公告)日:2022-08-11

    申请号:US17606045

    申请日:2020-06-24

    Abstract: Disclosed are: a humidifier for a fuel cell, which can reliably prevent gas leaks due to repeated operations and shutdowns of a fuel cell and can be manufactured with relatively low manufacturing costs and high productivity as well; and a method for manufacturing same. A humidifier for a fuel cell of the present invention comprises a humidification module and caps coupled to both ends of the humidification module, respectively. The humidification module comprises: a mid-case having a step on the inner peripheral surface thereof; a plurality of hollow fiber membranes in the mid-case; a fixation layer on which ends of the hollow fiber membranes are potted; a bracket which is supported by the step of the mid-case and is in contact with the fixation layer; and a packing member in contact with the bracket and having a groove into which an end of the mid-case is inserted.

    HYDROGENATED PETROLEUM RESIN AND RUBBER COMPOSITION COMPRISING SAME

    公开(公告)号:US20220220243A1

    公开(公告)日:2022-07-14

    申请号:US17635028

    申请日:2020-12-17

    Abstract: The present disclosure relates to a hydrogenated petroleum resin and a rubber composition including the same. The hydrogenated petroleum resin according to the present disclosure not only improves the viscoelastic properties of rubber containing the same, but also has excellent compatibility with rubber, thereby improving the overall physical properties of the rubber. Thus, rubber molded articles manufactured from the rubber composition containing the hydrogenated petroleum resin, for example, tires, have improved grip strength (wet/dry) and reduce an increase in rolling resistance due to the improvement in grip force to simultaneously satisfy two properties of grip force and rolling resistance required as a tire, thereby manufacturing a low-fuel consumption and high-performance tire.

    CATALYST, METHOD FOR PRODUCING SAME, ELECTRODE COMPRISING SAME, MEMBRANE-ELECTRODE ASSEMBLY COMPRISING SAME, AND FUEL CELL COMPRISING SAME

    公开(公告)号:US20210384525A1

    公开(公告)日:2021-12-09

    申请号:US17286892

    申请日:2019-12-16

    Inventor: Jung Ho KIM

    Abstract: Disclosed are a catalyst, a method for producing the catalyst, an electrode comprising the catalyst, a membrane-electrode assembly comprising the electrode, and a fuel cell comprising the membrane-electrode assembly, the catalyst having superb catalytic activity that can be obtained by means of a simple post-treatment process of the raw catalyst. The catalyst according to the present invention comprises a support, and metal particles supported therein, wherein the metal particles comprise main particles and an additional metal layer thereon, and the main particles and additional metal layer comprise the same metal elements. The metal particles have a budding structure or a rod structure by having just a particular latticed active surface of the main particles grow to form the additional metal layer, or a core-shell structure by having the entire latticed active surface of the main particles grow to form the additional metal layer.

    Protective Net for Sports, and Protective Net for Golf, Protective Net for Soccer, Protective Net for Baseball, Protective Net for Tennis, and Protective Net for Volleyball Using the Same

    公开(公告)号:US20210339109A1

    公开(公告)日:2021-11-04

    申请号:US17285474

    申请日:2019-12-18

    Inventor: Sang Hwan KIM

    Abstract: The present invention forms meshes between intersections of synthetic fiber cords while the synthetic fiber cords having a form in which a plurality of synthetic fiber filaments are plied and twisted is crossed in a knotless type, wherein a diameter (d) of the synthetic fiber cord satisfies the Equation (I), a maximum distance (DI) between the intersections adjacent to each other satisfies the Equation (II), and a minimum distance (D2) between the intersections adjacent to each other satisfies the Equation (III).
    Since the present invention is made lightweight with a lower areal density than a conventional protective net for sports and increases rate of hole size with a small diameter of the synthetic fiber cord constituting the protective net, the present invention improves resistance against wind during manufacture of a protective net structure, and has excellent mechanical properties and thus provides excellent resistance against impact applied when a ball flies and bumps. Consequently, the present invention minimizes damage and extends a replacement cycle.
    Further, the present invention improves visibility with the high rate of hole size, and also improves stability by effectively preventing penetration of the ball between the meshes.
    Further, the present invention is easily mounted in the protective net structure and provides excellent flame retardancy and weather resistance.

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