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    Membrane, membrane electrode assembly, and water electrolyzer including the same
    6.
    发明授权
    Membrane, membrane electrode assembly, and water electrolyzer including the same 有权

    公开(公告)号：US11560632B2

    公开(公告)日：2023-01-24

    申请号：US16586574

    申请日：2019-09-27

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Jiyoung Park ,  Krzysztof A. Lewinski ,  Sean M. Luopa ,  Andrew J. L. Steinbach

    IPC: C25B1/04 ,  C25B13/08 ,  C25B9/23 ,  C25B11/081 ,  C25B9/73

    Abstract: A water electrolyzer comprises a membrane, a cathode and an anode. The membrane comprises a first membrane layer comprising a first ion-conductive polymer, a second membrane layer comprising a second ion-conductive polymer, and a platinized nanostructured layer disposed between the first layer and the second layer. The platinized nanostructured layer comprises close-packed whiskers having at least one of platinum or platinum oxide disposed thereon. The cathode is disposed on the membrane and comprises a first catalyst consisting essentially of both metallic Pt and Pt oxide. The anode is disposed on the opposite surface of the membrane and comprises a second catalyst comprising at least 95 percent by weight of collectively metallic Ir and Ir oxide, calculated as elemental Ir, based on the total weight of the second catalyst, wherein at least one of metallic Ir or Ir oxide is present. Membranes and methods of making them are also disclosed.

    WATER ELECTROLYZERS
    7.
    发明申请
    WATER ELECTROLYZERS 有权

    公开(公告)号：US20220033982A1

    公开(公告)日：2022-02-03

    申请号：US17309509

    申请日：2019-12-17

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Jiyoung Park ,  Krzysztof A. Lewinski

    IPC: C25B11/093 ,  C25B1/04 ,  C25B9/05 ,  C25B9/23 ,  C25B13/08

    Abstract: A water electrolyzer comprising: a membrane having first and second opposed major surfaces, a thickness extending between the first and second major surfaces; a cathode comprising a first catalyst on the first major surface of the membrane; and an anode comprising a second catalyst on the second major surface of the membrane, wherein the membrane, if planar, has a length direction, an average length, a width direction, an average width, a thickness direction, and an average thickness, wherein the average length and the average width are each greater than the average thickness, wherein the average width is no greater than the average length, wherein the average thickness is defined between first and second major surfaces of the membrane, wherein the average length, the average width, and the average thickness define a membrane volume, wherein has the length direction, the width direction, and the thickness direction are each perpendicular to each other, wherein the membrane volume comprises at least one of metallic Pt or Pt oxide, wherein the membrane volume comprises at least 5 of alternating first and second regions across at least one plane in the membrane, wherein the first region has a first concentration within a 100 micrometer3 cube volume collectively of metallic Pt and Pt oxide that is at least 0.1 microgram/cm3, wherein the second region has a second concentration within a 100 micrometer3 cube volume collectively of metallic Pt and Pt oxide that is not greater than 0.01 microgram/cm3, and wherein the first concentration is at least 10 times greater than the second concentration.

    WATER ELECTROLYZERS
    9.
    发明申请
    WATER ELECTROLYZERS 审中-公开

    公开(公告)号：US20200048782A1

    公开(公告)日：2020-02-13

    申请号：US16497883

    申请日：2018-03-28

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Krzysztof A. Lewinski ,  Sean M. Luopa ,  Jiyoung Park ,  Attila Molnar

    IPC: C25B9/10 ,  C25B1/10 ,  C25B13/04 ,  B01J23/46 ,  B01J23/42 ,  B01J23/54

    Abstract: Water electrolyzer comprising a membrane having first and second opposed major surfaces, a thickness extending between the first and second major surfaces, and first, second, and third regions equally spaced across the thickness, wherein the first region is the closest region to the first major surface, wherein the second region is the closest region to the second major surface, wherein the third region is located between the first and second regions, wherein the first and third regions are each essentially free of both metallic Pt and Pt oxide, and wherein the second region comprises at least one of metallic Pt or Pt oxide; a cathode comprising a first catalyst on the first major surface of the membrane; and an anode comprising a second catalyst on the second major surface of the membrane.

    WATER ELECTROLYZERS
    10.
    发明申请
    WATER ELECTROLYZERS 审中-公开

    公开(公告)号：US20200017980A1

    公开(公告)日：2020-01-16

    申请号：US16497891

    申请日：2018-03-28

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Krzysztof A. Lewinski ,  Jiyoung Park ,  Sean M. Luopa ,  Andrew T. Haug

    IPC: C25B1/10 ,  C25B13/08 ,  C25B9/10 ,  B01J23/42

    Abstract: Water electrolyzer comprising a membrane having first and second opposed major surfaces and comprising at least one of metallic Pt or Pt oxide supported by at least one of nanostructured whiskers (e.g., perylene red nanostructured whiskers), carbon nanotubes (e.g., single wall carbon nanotubes (SWNT) (sometimes referred to as “buckytubes”) or multiple wall carbon nanotubes (MWNT)), fullerenes (sometimes referred to as “buckyballs”), carbon nanofibers, carbon microfibers, graphene, oxide (e.g., at least one of alumina, silica, tin oxide, titania, or zirconia), or clay; a cathode comprising a first catalyst on the first major surface of the membrane; and an anode comprising a second catalyst on the second major surface of the membrane.

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