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    CARBON SUBSTRATE COMPRISING CARBON FIBERS UNIDIRECTIONALLY ALIGNED, AND GAS DIFFUSION LAYER EMPLOYING SAME
    11.
    发明公开
    CARBON SUBSTRATE COMPRISING CARBON FIBERS UNIDIRECTIONALLY ALIGNED, AND GAS DIFFUSION LAYER EMPLOYING SAME 审中-公开

    公开(公告)号：EP3893303A1

    公开(公告)日：2021-10-13

    申请号：EP19894160.1

    申请日：2019-12-02

    Applicant: JNTG Co., Ltd.

    Inventor： LEE, Eun Sook ,  JYOUNG, Jy Young ,  KANG, Na Hee ,  KIM, Do Hun ,  KIM, Tae Hyung ,  KIM, Eun Chong ,  KIM, Tae Nyun

    IPC: H01M8/0234 ,  H01M8/0245 ,  H01M4/86 ,  D01F9/12 ,  H01M8/1004

    Abstract: Disclosed are a carbon substrate for a gas diffusion layer of a fuel cell, a gas diffusion layer employing the same, an electrode for a fuel cell, a membrane electrode assembly for a fuel cell, and a fuel cell, wherein the carbon substrate includes a plate-shaped substrate having an upper surface and a lower surface opposite the upper surface, and the plate-shaped substrate includes carbon fibers arranged to extend in one direction (extend unidirectionally) and a carbide of an organic polymer located between the carbon fibers to bind the carbon fibers to each other. Since the carbon substrate according to the present disclosure includes carbon fibers aligned in at least one direction selected from a machine direction (MD) and a cross-machine direction (CMD) by controlling the alignment of carbon fibers, the carbon substrate has excellent mechanical strength, particularly, bending strength, even if its thickness is thin, and thus it is possible to effectively prevent the intrusion phenomenon of the gas diffusion layer into the flow path of the metal separator, and has excellent gas flow characteristics.

    METHOD FOR MANUFACTURING SLURRY FOR MICROPOROUS LAYER FORMATION AND GAS DIFFUSION LAYER INCLUDING MICROPOROUS LAYER MANUFACTURED THEREBY
    14.
    发明公开
    METHOD FOR MANUFACTURING SLURRY FOR MICROPOROUS LAYER FORMATION AND GAS DIFFUSION LAYER INCLUDING MICROPOROUS LAYER MANUFACTURED THEREBY 审中-公开

    公开(公告)号：EP3809503A1

    公开(公告)日：2021-04-21

    申请号：EP19822589.8

    申请日：2019-06-11

    Applicant: Kolon Industries, Inc.

    Inventor： HA, Ji Min ,  YOON, Joon Young ,  YONG, Da Kyoung

    IPC: H01M8/0245 ,  H01M8/0243 ,  H01M8/0234 ,  H01M4/86

    Abstract: In the present invention, a water-based wetting dispersant having an acid value of 5 mg KOH/g or more and an amine value of 10 mg KOH/g or less is used to dilute and disperse black carbon and a hydrophobic fluorine resin in an organic solvent to manufacture a slurry for microporous layer formation. In this regard, the added amount of the water-based wetting dispersant is adjusted to 5 to 30 parts by weight on the basis of 100 parts by weight of black carbon. In the present invention, the slurry is applied to at least one surface of carbon fiber paper and dried to form a microporous layer in which two independent peaks appear as analyzed on a particle size graph, followed by compression and deposition thereof to fabricate a gas diffusion layer including the microporous layer in which two independent peaks appear as analyzed on a particle size graph. With the appearance of two independent peaks on a particle size analysis graph, the gas diffusion layer of the present invention has an excellent drainage function, thereby increasing in the current value of the concentration polarization curve at the equivalent voltage value.

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