公开(公告)号：US11230626B2

公开(公告)日：2022-01-25

申请号：US16322920

申请日：2017-08-01

Applicant: Simon Fraser University

Inventor： Steven Holdcroft ,  Thomas Weissbach ,  Timothy James Peckham ,  Andrew Wright ,  Benjamin Britton

IPC: C08G73/18 ,  C08J3/24 ,  C08J5/22 ,  C08L79/04 ,  C25B1/04 ,  C25B13/08 ,  C25B9/73 ,  H01M8/1018 ,  H01M8/103

Abstract: Described herein are crosslinked alkylated poly(benzimidazole) and poly(imidazole) polymer materials and devices (e.g., fuel cells, water electrolyzers) including these polymer materials. The polymer materials can be prepared in a convenient manner, allowing for applications such as anion exchange membranes (AEMs). The membranes provide high anion conductivities over a wider range of operating conditions when compared to the analogous membranes that are not cross-linked. The crosslinked polymer materials have improved alkaline stability, when compared to the analogous non-crosslinked polymer materials.

公开(公告)号：US20190169372A1

公开(公告)日：2019-06-06

申请号：US16322920

申请日：2017-08-01

Applicant: Simon Fraser University

Inventor： Steven Holdcroft ,  Thomas Weissbach ,  Timothy James Peckham ,  Andrew Wright ,  Benjamin Britton

IPC: C08G73/18 ,  C08J3/24 ,  C08J5/22 ,  H01M8/103 ,  C25B13/08 ,  C25B1/10

Abstract: Described herein are crosslinked alkylated poly(benzimidazole) and poly(imidazole) polymer materials and devices (e.g., fuel cells, water electrolyzers) including these polymer materials. The polymer materials can be prepared in a convenient manner, allowing for applications such as anion exchange membranes (AEMs). The membranes provide high anion conductivities over a wider range of operating conditions when compared to the analogous membranes that are not cross-linked. The crosslinked polymer materials have improved alkaline stability, when compared to the analogous non-crosslinked polymer materials.

公开(公告)号：US20190382353A1

公开(公告)日：2019-12-19

申请号：US16321414

申请日：2017-07-29

Applicant: Simon Fraser University

Inventor： Steven Holdcroft ,  Jiantao Fan ,  Andrew Wright ,  Benjamin Britton ,  Thomas Weissbach ,  Timothy James Peckham ,  Jonathan William Ward

IPC: C07D233/64 ,  A61P31/00

Abstract: Provided herein are imidazolium polymers having steric hindrance at the 4-position of the imidazole moieties in the polymeric chain. The sterically-protected, N-methylated imidazolium polymers exhibit hydroxide stability in concentrated caustic solutions at elevated temperatures, such as at 100° C. and higher.

公开(公告)号：US11299464B2

公开(公告)日：2022-04-12

申请号：US16321414

申请日：2017-07-29

Applicant: Simon Fraser University

Inventor： Steven Holdcroft ,  Jiantao Fan ,  Andrew Wright ,  Benjamin Britton ,  Thomas Weissbach ,  Timothy James Peckham ,  Jonathan William Ward

IPC: C07D233/64 ,  A61P31/00

Abstract: Provided herein are imidazolium polymers having steric hindrance at the 4-position of the imidazole moieties in the polymeric chain. The sterically-protected, N-methylated imidazolium polymers exhibit hydroxide stability in concentrated caustic solutions at elevated temperatures, such as at 100° C. and higher.