Alkaline Electrolysis Membrane: IONZERA vs Zirfon

In an alkaline water electrolyser (AWE), the separator membrane sits between the cathode and anode, immersed in concentrated KOH electrolyte (typically 25-30 wt%). Its job is twofold: allow hydroxide ions (OH⁻) to pass freely while preventing the mixing of hydrogen and oxygen gases produced at each electrode.

The separator's area resistance is the dominant factor in cell voltage - a lower-resistance membrane means less energy wasted as heat and more efficient hydrogen production. This is where IONZERA fundamentally outperforms Zirfon.

While Zirfon's ZrO₂-PPS mesh design has served the industry for years, IONZERA represents the next generation of AWE separator technology:

IONZERA's thinner profile (350-410 μm vs Zirfon's 500 μm) offers practical benefits for electrolyser stack design. Thinner membranes mean shorter ionic pathways, more cells per stack length, and reduced stack weight - all important for large-scale AWE deployments.

The mesh-free construction also provides more consistent membrane properties across the active area, reducing the risk of localized hot spots and non-uniform current distribution in large-format cells.

IONZERA is fully compatible with standard AWE operating conditions: 30 wt% KOH electrolyte, operating temperatures up to 45°C, and current densities from 0.2-0.6 A/cm². It drops directly into existing stack designs without requiring frame or process modifications.