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Robust poly(p-phenylene oxide) anion exchange membranes reinforced with pore-filling technique for water electrolysis

Lookup NU author(s): Dr Zhiming Feng, Dr Gaurav GuptaORCiD, Professor Mohamed MamloukORCiD



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


© 2024 The Authors. Journal of Applied Polymer Science published by Wiley Periodicals LLC. Mechanical robustness and durability are crucial for anion exchange membranes to guarantee the longevity and consistent performance of AEM water electrolysis (AEMWE) systems. In this study, a composite membrane based on the quaternized poly(p-phenylene oxide) (QPPO)/polytetrafluoroethylene (PTFE) was developed. This membrane was fabricated by enhancing the QPPO-based AEM through a pore-filling technique within a porous PTFE structure. The tensile strength of the composite membrane was increased significantly from 16.5 to 31 MPa. The conductivity of the composite membrane was 6.25 mScm−1 lower than 30 mScm−1 of the QPPO-based membrane at 20°C, resulting from the low volume fraction of QPPO in the composite membrane. At 40% RH, the net change mass of the composite membrane is 1.59%, much lower than that of QPPO-based membrane (10.98%) at 40°C. The composite membrane demonstrated a significantly increased lifetime in the working electrolyzer (>200 h) compared with an otherwise identical electrolyzer assembled with a QPPO-based membrane (50 h).

Publication metadata

Author(s): Feng Z, Gupta G, Mamlouk M

Publication type: Article

Publication status: Published

Journal: Journal of Applied Polymer Science

Year: 2024

Pages: Epub ahead of print

Online publication date: 29/02/2024

Acceptance date: 11/02/2024

Date deposited: 19/03/2024

ISSN (print): 0021-8995

ISSN (electronic): 1097-4628

Publisher: John Wiley and Sons Inc.


DOI: 10.1002/app.55340


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