Analysis of anion exchange membrane water electrolyzer performance and its evolution over time.

ABSTRACT: Understanding water, evolved gas, and ionic transport in membrane-electrode-assemblies (MEAs) is essential for the development of high performance and durable anion exchange membrane water electrolyzers (AEMWEs). This study evaluates the MEA conditioning process, operating conditions, and short-term stability in a 1 M potassium hydroxide (KOH) electrolyte, focusing on the underlying transport phenomena. We observe a significant initial voltage loss in continuous cell operation, which could be associated with gas bubble accumulation, transport layer or flow field passivation, and changes in the catalyst oxidation state. Further, we investigate the effects of materials and operational configurations, including the membrane type and thickness, and the electrolyte flow rate, including KOH bein

SUBMITTER: Ul Hassan N 

PROVIDER: S-EPMC12721200 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature