中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

11 records (took 0.011 seconds)

    SUPPORTED METAL CATALYST, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING CARRIER
    5.
    发明申请
    SUPPORTED METAL CATALYST, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING CARRIER 有权

    公开(公告)号：US20230085417A1

    公开(公告)日：2023-03-16

    申请号：US17795027

    申请日：2021-02-05

    Applicant: UNIVERSITY OF YAMANASHI ,  NIKKI-UNIVERSAL CO., LTD.

    Inventor： Toshihiro MIYAO ,  Hanako NISHINO ,  Kazutoshi HIGASHIYAMA ,  Makoto UCHIDA ,  Akihiro IIYAMA ,  Kazuya SHIBANUMA ,  Naoto KOIZUMI

    IPC: H01M4/92 ,  H01M4/86 ,  H01M4/88

    Abstract: The present invention provides a supported metal catalyst with excellent effectiveness factor of active metal particles which are also free from deactivation by contacting with ionomer.
    According to the present invention, provided is a supported metal catalyst, comprising a support that is a collective body of conductive particles; and dispersed active metal particles supported on the conductive particles, wherein the conductive particles include a plurality of pores, an average entrance pore diameter of the pores is 1 to 20 nm, a standard deviation of the average entrance pore diameter is equal to or less than 50% of the average entrance pore diameter, a number fraction of the active metal particles supported in a surface layer region of the conductive particles divided by the total number of the active metal particles is equal to or more than 50%, and the surface layer region is a region on a surface of the conductive particles or a region in the pores within a depth of 15 nm from the surface.

    CARRIER METAL CATALYST, MANUFACTURING METHOD THEREOF, AND FUEL CELL
    6.
    发明申请
    CARRIER METAL CATALYST, MANUFACTURING METHOD THEREOF, AND FUEL CELL 有权

    公开(公告)号：US20230049745A1

    公开(公告)日：2023-02-16

    申请号：US17967180

    申请日：2022-10-17

    Applicant: UNIVERSITY OF YAMANASHI

    Inventor： Katsuyoshi KAKINUMA ,  Makoto UCHIDA ,  Akihiro IIYAMA

    IPC: H01M4/92 ,  H01M8/1004

    Abstract: The carrier metal catalyst achieves suppression of internal resistance of a fuel cell. A carrier metal catalyst includes: a carrier powder; and metal fine particles supported on the carrier powder; wherein: the carrier powder is an aggregates of carrier fine particles; the carrier fine particles includes a chained portion structured by a plurality of crystallites being fusion bonded to form a chain; the carrier fine particles include titanium oxide; the carrier fine particles are doped with an element having a valence different from a valence of titanium; the titanium oxide of the carrier powder has an anatase phase/rutile phase ratio of 0.2 or lower; the metal fine particles have a mean particle size of 3 to 10 nm; the metal fine particles include platinum; and a cell resistance measured under standard conditions of a fuel cell prepared using the carrier metal catalyst is 0.090 Ωcm·2 or lower.

    SUPPORTED METAL CATALYST
    8.
    发明公开
    SUPPORTED METAL CATALYST 审中-公开

    公开(公告)号：US20240055616A1

    公开(公告)日：2024-02-15

    申请号：US18259304

    申请日：2021-12-23

    Applicant: UNIVERSITY OF YAMANASHI ,  NIHON KAGAKU SANGYO CO., LTD.

    Inventor： Katsuyoshi KAKINUMA ,  Akihiro IIYAMA ,  Makoto UCHIDA ,  Sumitaka WATANABE ,  Isao AMEMIYA

    IPC: H01M4/92 ,  H01M4/90

    CPC classification number: H01M4/925 ,  H01M4/9075

    Abstract: The present invention provides a supported metal catalyst that has an electric conductivity acceptable as a catalyst and can suppress the generation of hydrogen peroxide.
    According to the present invention, provided is a supported metal catalyst, comprising: a support powder; and metal fine particles supported on the support powder, wherein: the support powder is an aggregate of support fine particles; the support fine particles have a chained portion structured by a plurality of crystallites being fusion-bonded to form a chain; the support fine particles are structured with a metal oxide; the metal oxide contains cerium; and an electric conductivity of the supported metal catalyst is 10−4 S/cm or higher.

    CARRIER METAL CATALYST, MANUFACTURING METHOD THEREOF, AND FUEL CELL
    10.
    发明申请
    CARRIER METAL CATALYST, MANUFACTURING METHOD THEREOF, AND FUEL CELL 审中-公开

    公开(公告)号：US20200243872A1

    公开(公告)日：2020-07-30

    申请号：US16774242

    申请日：2020-01-28

    Applicant: UNIVERSITY OF YAMANASHI

    Inventor： Katsuyoshi KAKINUMA ,  Makoto UCHIDA ,  Akihiro IIYAMA

    IPC: H01M4/92 ,  H01M8/1004

    Abstract: The carrier metal catalyst achieves suppression of internal resistance of a fuel cell. A carrier metal catalyst includes: a carrier powder; and metal fine particles supported on the carrier powder; wherein: the carrier powder is an aggregates of carrier fine particles; the carrier fine particles includes a chained portion structured by a plurality of crystallites being fusion bonded to form a chain; the carrier fine particles include titanium oxide; the carrier fine particles are doped with an element having a valence different from a valence of titanium; the titanium oxide of the carrier powder has an anatase phase/rutile phase ratio of 0.2 or lower; the metal fine particles have a mean particle size of 3 to 10 nm; the metal fine particles include platinum; and a cell resistance measured under standard conditions of a fuel cell prepared using the carrier metal catalyst is 0.090 Ω·cm2 or lower.

Patent Agency Ranking