Role of the Ionomer in Supporting Electrolyte-Fed Anion Exchange Membrane Water Electrolyzers.

ABSTRACT: While anion exchange membrane water electrolyzers (AEMWEs) have achieved significant performance advances in recent decades, overpotentials remain high relative to their proton exchange membrane water electrolyzer (PEMWE) counterparts, requiring AEMWE-specific catalyst layer design strategies to further advance this technology. In this work, the role of the ionomer in catalyst layer structure and quality, catalyst layer stability, and ion conduction for supporting electrolyte-fed AEMWEs is assessed for catalyst layers composed of NiFe₂O₄ and PiperION TP85 from Versogen at variable ionomer contents (0-30 wt %) for tests up to 200 h. The results reveal that, for supporting electrolyte-fed AEM devices, the ionomer is not required for ion conduction through the catalyst l

SUBMITTER: Volk EK 

PROVIDER: S-EPMC11808641 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature