Operating Windows and Membrane Conductivity and Resistance of LA-ISMWE (This Work), ISMWE, AWE, and AEMWE (IMAGE)

National Research Council of Science & Technology

Operating Windows and Membrane Conductivity and Resistance of LA-ISMWE (This Work), ISMWE, AWE, and AEMWE

Caption

Conventional alkaline water electrolysis (AWE) employs a porous Zirfon diaphragm with highly concentrated KOH electrolytes (4–7 M), while alkaline anion exchange membrane water electrolysis (AEMWE) uses dense polymer membranes with KOH concentrations up to 1 M. Meta-PBI-based ISMs can compete with AWE. The newly developed ISM in this study exhibits high ionic conductivity not only within the AWE operating range but also within the AEMWE range, reaching world-record performance. For practical applications, low membrane resistance (resistance = thickness/conductivity) is critical, and the ISM developed in this work shows lower resistance than the compared separator membranes.

Credit

Korea Institute of Science and Technology

Usage Restrictions

The sources of photos and research results from KIST must be specified.

License

Original content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.