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    Membrane electrode assembly
    2.
    发明授权
    Membrane electrode assembly 有权

    公开(公告)号：US10256491B2

    公开(公告)日：2019-04-09

    申请号：US15309942

    申请日：2015-05-20

    Applicant: Johnson Matthey Fuel Cells Limited

    Inventor： Rachel Louise O'Malley

    IPC: H01M8/10 ,  H01M8/1004 ,  H01M4/92

    Abstract: The invention includes a catalysed membrane and membrane electrode assembly. The membrane and membrane electrode assembly comprise an ion-conducting membrane component comprising an ion-conducting membrane, an anode catalyst layer, and a cathode catalyst layer. The anode catalyst layer comprises a first electrocatalyst component comprising a first platinum-containing electrocatalyst and a first carbon support. The first carbon support supports the first platinum-containing electrocatalyst, and the electrochemical platinum surface area in the anode catalyst layer is 5-100 cm2Pt/cm2 of the geometric electrode area of the anode catalyst layer. The cathode catalyst layer comprises a second electrocatalyst component and a second oxygen evolution reaction electrocatalyst. The second electrocatalyst component comprises a second platinum-containing electrocatalyst and a second carbon support, wherein the second carbon support supports the second platinum-containing electrocatalyst component.

    ION-CONDUCTING MEMBRANE
    4.
    发明申请
    ION-CONDUCTING MEMBRANE 审中-公开
    导电膜

    公开(公告)号：US20140315117A1

    公开(公告)日：2014-10-23

    申请号：US14350162

    申请日：2012-10-24

    Applicant: JOHNSON MATTHEY FUEL CELLS LIMITED

    Inventor： Rachel Louise O'Malley ,  Nadia Michele Permogorov ,  Michael Ian Petch

    IPC: H01M8/10

    Abstract: An ion-conducting membrane including a first layer and a second layer, wherein the first layer includes a perfluorosulphonic acid polymer and the second layer includes a sulphonated hydrocarbon polymer, characterised in that the ion-conducting membrane has a total thickness of from 5 μm to 50 μm and the second layer has a total thickness of 2 μm or less is disclosed.

    Abstract translation: 一种离子传导膜，包括第一层和第二层，其中第一层包括全氟磺酸聚合物，第二层包括磺化烃聚合物，其特征在于，离子传导膜的总厚度为5μm至 50μm，第二层的总厚度为2μm以下。

    Use Of Anode Catalyst Layer
    5.
    发明申请
    Use Of Anode Catalyst Layer 有权

    公开(公告)号：US20210143443A1

    公开(公告)日：2021-05-13

    申请号：US17153927

    申请日：2021-01-21

    Applicant: Johnson Matthey Fuel Cells Limited

    Inventor： Rachel Louise O'Malley ,  Enrico Petrucco

    IPC: H01M4/92 ,  H01M8/1004 ,  H01M4/86 ,  B01J21/18 ,  B01J23/648 ,  B01J37/02 ,  H01M8/1018

    Abstract: A method of operating a fuel cell having an anode, a cathode and a polymer electrolyte membrane disposed between the anode and the cathode, includes feeding the anode with an impure hydrogen stream having low levels of carbon monoxide up to 5 ppm, and wherein the anode includes an anode catalyst layer including a carbon monoxide tolerant catalyst material, wherein the catalyst material includes: (i) a binary alloy of PtX, wherein X is a metal selected from the group consisting of rhodium and osmium, and wherein the atomic percentage of platinum in the alloy is from 45 to 80 atomic % and the atomic percentage of X in the alloy is from 20 to 55 atomic %; and (ii) a support material on which the PtX alloy is dispersed; wherein the total loading of platinum group metals (PGM) in the anode catalyst layer is from 0.01 to 0.2 mgPGM/cm2.

    Use of an anode catalyst layer
    8.
    发明授权
    Use of an anode catalyst layer 有权

    公开(公告)号：US10938038B2

    公开(公告)日：2021-03-02

    申请号：US15874000

    申请日：2018-01-18

    Applicant: Johnson Matthey Fuel Cells Limited

    Inventor： Rachel Louise O'Malley ,  Enrico Petrucco

    IPC: H01M4/92 ,  H01M8/1004 ,  H01M4/86 ,  B01J21/18 ,  B01J23/648 ,  B01J37/02 ,  H01M8/1018 ,  B01J23/46 ,  H01M4/88 ,  B01J23/56 ,  B01J23/42 ,  H01M8/04298

    Abstract: A method of operating a fuel cell having an anode, a cathode and a polymer electrolyte membrane disposed between the anode and the cathode, includes feeding the anode with an impure hydrogen stream having low levels of carbon monoxide up to 5 ppm, and wherein the anode includes an anode catalyst layer including a carbon monoxide tolerant catalyst material, wherein the catalyst material includes: (i) a binary alloy of PtX, wherein X is a metal selected from the group consisting of rhodium and osmium, and wherein the atomic percentage of platinum in the alloy is from 45 to 80 atomic % and the atomic percentage of X in the alloy is from 20 to 55 atomic %; and (ii) a support material on which the PtX alloy is dispersed; wherein the total loading of platinum group metals (PGM) in the anode catalyst layer is from 0.01 to 0.2 mgPGM/cm2.

    Catalyst
    9.
    发明申请
    Catalyst 有权

    公开(公告)号：US20210020953A1

    公开(公告)日：2021-01-21

    申请号：US17063788

    申请日：2020-10-06

    Applicant: Johnson Matthey Fuel Cells Limited

    Inventor： Alejandro Martinez Bonastre ,  Geoffrey Hugh Spikes ,  Rachel Louise O'Malley

    IPC: H01M4/88 ,  H01M4/92 ,  H01M4/90 ,  H01M8/1004

    Abstract: A process for preparing a catalyst material, said catalyst material comprising a support material, a first metal and one or more second metals, wherein the first metal and the second metal(s) are alloyed and wherein the first metal is a platinum group metal and the second metal(s) is selected from the group of transition metals and tin provided the second metal(s) is different to the first metal is disclosed. The process comprises depositing a silicon oxide before or after deposition of the second metal(s), alloying the first and second metals and subsequently removing silicon oxide. A catalyst material prepared by this process is also disclosed.

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