中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.011 seconds)

    Carrier metal catalyst, manufacturing method thereof, and fuel cell
    1.
    发明授权
    Carrier metal catalyst, manufacturing method thereof, and fuel cell 有权

    公开(公告)号：US11990627B2

    公开(公告)日：2024-05-21

    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

    CPC classification number: H01M4/925 ,  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.

    Fuel cell system and method for its operation
    4.
    发明授权
    Fuel cell system and method for its operation 有权

    公开(公告)号：US10333152B2

    公开(公告)日：2019-06-25

    申请号：US15234688

    申请日：2016-08-11

    Applicant: UNIVERSITY OF YAMANASHI

    Inventor： Makoto Uchida ,  Katsuyoshi Kakinuma ,  Masahiro Watanabe ,  Akihiro Iiyama

    IPC: H01M8/04 ,  H01M4/92 ,  H01M8/04223 ,  H01M8/04225

    Abstract: A fuel cell system and a method of operating the same is provided that is capable of reducing degradation of a cathode catalyst of a fuel cell. A fuel cell system is provided that includes a fuel cell having a catalyst used for an anode, wherein a carrier of the catalyst is composed of a material with a property where electric resistance in an oxygen containing atmosphere is greater than electric resistance in a hydrogen atmosphere; and a control device configured to control the fuel cell, when supply of fuel gas is stopped during stoppage of operation of the fuel cell, to consume all or part of the fuel gas in a fuel gas chamber, followed by introducing oxygen containing gas into the fuel gas chamber.

    Carrier metal catalyst, manufacturing method thereof, and fuel cell
    7.
    发明授权
    Carrier metal catalyst, manufacturing method thereof, and fuel cell 有权

    公开(公告)号：US11502309B2

    公开(公告)日：2022-11-15

    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