AUTHOR=Park Eun Joo , Komini Babu Siddharth , Kim Yu Seung 

TITLE=Gas Permeability Test Protocol for Ion-Exchange Membranes

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.945654

DOI=10.3389/fenrg.2022.945654

ISSN=2296-598X

ABSTRACT=The membrane-based electrolysis of water is a growing topic of interest due to the advantages of employing membranes in hydrogen production efficiency and system safety over the traditional alkaline water electrolysis. Ion exchange membranes with low gas permeability are highly desirable for stable and safe operation of membrane-based water-splitting technologies, hence gas permeability through ion exchange membranes needs to be properly assessed with standardized methods. We address three methods to measure gas permeability of ion exchange membranes, a pressure permeation cell, chronoamperometry microelectrodes, and in situ testing of the membrane electrode assembly, and provide a guideline for choosing the appropriate method for the targeted operating conditions of the water electrolyzers.