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.

公开(公告)号：US20210013522A1

公开(公告)日：2021-01-14

申请号：US15733645

申请日：2019-03-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Andrew J.L. Steinbach ,  Amy E. Hester ,  Andrew T. Haug ,  Krzysztof A. Lewinski ,  Sean M. Luopa ,  Grant M. Thoma

IPC: H01M4/92 ,  H01M8/1004 ,  H01M4/86 ,  H01M4/90

Abstract: Catalysts comprising nanostructured elements comprising microstructured whiskers having an outer surface at least partially covered by a catalyst material comprising at least 90 atomic percent collectively Pt, Ni, and Cr, wherein the Pt is present in a range from 32.4 to 35.8 atomic percent, the Ni is present in a range from 57.7 to 63.7 atomic percent, and the Cr is present in a range from 0.5 to 10.0 atomic percent, and wherein the total atomic percent of Pt, Ni, and Cr equals 100. Catalyst described herein are useful, for example, in fuel cell membrane electrode assemblies.

公开(公告)号：US20210008528A1

公开(公告)日：2021-01-14

申请号：US15733646

申请日：2019-03-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Andrew J. L. Steinbach ,  Sean M. Luopa ,  Andrew T. Haug ,  Amy E. Hester ,  Krzysztof A. Lewinski ,  Grant M. Thoma

IPC: B01J23/89 ,  B01J23/46 ,  B01J23/42 ,  B01J37/02 ,  H01M4/86 ,  H01M4/90

Abstract: Catalysts comprising nanostmctured elements comprising microstructured whiskers having an outer surface at least partially covered by a catalyst material comprising at least 90 atomic percent collectively Pt, Ni, and Ru, wherein the Pt is present in a range from 33.9 to 35.9 atomic percent, the Ni is present in a range from 60.3 to 63.9 atomic percent, and the Ru is present in a range from 0.5 to 9.9 atomic percent and wherein the total atomic percent of Pt, Ni, and Ru equals 100. Catalyst described herein are useful, 0 for example, in fuel cell membrane electrode assemblies.

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.

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.