Catalyst for solid polymer fuel cell and method for producing same

    公开(公告)号:US10903503B2

    公开(公告)日:2021-01-26

    申请号:US16580154

    申请日:2019-09-24

    摘要: The present invention is a catalyst for a solid polymer fuel cell including: catalyst particles of platinum, cobalt and manganese; and a carbon powder carrier supporting the catalyst particles, wherein the component ratio (molar ratio) of the platinum, cobalt and manganese of the catalyst particles is of Pt:Co:Mn=1:0.06 to 0.39:0.04 to 0.33, and wherein in an X-ray diffraction analysis of the catalyst particles, the peak intensity ratio of a Co—Mn alloy appearing around 2θ=27° is 0.15 or less on the basis of a main peak appearing around 2θ=40°. It is particularly preferred that the catalyst have a peak ratio of a peak of a CoPt3 alloy and an MnPt3 alloy appearing around 2θ=32° of 0.14 or more on the basis of a main peak.

    Method of coating a membrane with a catalyst

    公开(公告)号:US10897048B2

    公开(公告)日:2021-01-19

    申请号:US16343356

    申请日:2017-10-18

    摘要: A method of coating a membrane having a first side and an opposite second side and carried with its second side adhering to a backer film is provided. The method includes coating the first side of the membrane with a catalyst ink or slurry with the second side adhering to the backer film and curing the coating on the first side. The backer film is then removed to expose the second side of the membrane which is fed onto a vacuum conveyor with the coated first side facing the conveyor. The second side of the membrane is then coated with a catalyst ink or slurry and the coating on the second side cured after which the membrane is removed from the vacuum conveyor.

    Fuel cell system and control method for fuel cell system

    公开(公告)号:US10854900B2

    公开(公告)日:2020-12-01

    申请号:US15117956

    申请日:2014-12-17

    发明人: Kiyoshi Hoshi

    摘要: A fuel cell system is configured to generate power by supplying anode gas and cathode gas to a fuel cell. The fuel cell system includes a load connected to the fuel cell and an IV estimation unit configured to change an output current of the fuel cell with a predetermined width by adjusting power supplied to the load during the warm-up of the fuel cell. The fuel cell system is configured to estimate an IV characteristic of the fuel cell on the basis of at least two sets of an output current value and an output voltage value detected while the output current is changed. The fuel cell system includes an IV estimation stop unit configured to stop the execution of the IV estimation on the basis of an output of the fuel cell during the execution of the IV estimation.