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Updated: Jan 8, 2026

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device

Published on: July 20, 2021

アニオン交換膜水電解セルの性能とその経時変化の解析

Noor Ul Hassan¹, Radhika Iyer¹, Andrew Boudreau¹

¹Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO 80401, USA.

|December 24, 2025

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 being fed to both electrodes as well as to the anode only. Furthermore, the effect of membrane drying temperature on ex situ as well as in situ electrochemical performance is evaluated. Finally, we discuss 700 h of AEMWE operation at 1 A/cm², highlighting the underlying degradation phenomena.

キーワード:

電気化学エネルギーシステムエネルギー貯蔵

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Electrochemically and Bioelectrochemically Induced Ammonium Recovery

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Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone

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