IONZERA
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0.1

Ω·cm²

350

μm thick

3x

vs Zirfon

G-Hexa|Made in India
TECHNOLOGYVSFumatech fumapem

IONZERA vs Fumatech fumapem

Fumatech's fumapem ion exchange membranes and IONZERA's porous composite separator represent fundamentally different approaches to water electrolysis. Understand which technology fits your application.

IONZERA0.09–0.1Ω·cm²Mesh-FreeDesign350–410μm thinZeroAsbestosTiO₂+GONanoAWEReady

Two Different Membrane Technologies

Fumatech BWT GmbH (Germany) produces the fumapem product line - dense ion exchange membranes used primarily in PEM (proton exchange membrane) and AEM (anion exchange membrane) electrolysis. These membranes function by selectively transporting ions through a solid polymer electrolyte, with no liquid-filled pores.

IONZERA is a porous composite separator designed specifically for alkaline water electrolysis (AWE). It functions by allowing KOH electrolyte to fill its pore network, with hydroxide ions (OH⁻) transported through the electrolyte-filled pores while gas bubbles are blocked by the membrane's controlled pore structure.

When to Choose IONZERA over fumapem

The choice between a porous AWE separator and an ion exchange membrane depends on your electrolysis system architecture:

Alkaline electrolysis (AWE) systems - IONZERA is purpose-built for KOH-based electrolysis at 0.2–0.6 A/cm², the dominant technology for large-scale hydrogen production
Cost-sensitive projects - AWE with IONZERA avoids the high cost of noble metal catalysts (Pt, Ir) required by PEM systems using fumapem-type membranes
Scale-up to GW capacity - AWE technology with IONZERA scales more economically than PEM, with no precious metal supply chain constraints
Existing AWE infrastructure - IONZERA drops into standard alkaline electrolyser stack designs with no modifications

Nanocomposite Structure

PSU-TiO₂-GO
OH⁻OH⁻OH⁻PSU MatrixTiO₂GO SheetsPores350-410 μm

Technical Comparison

While the two technologies are fundamentally different, comparing key parameters helps engineers understand the trade-offs:

Area resistance: IONZERA 0.09–0.1 Ω·cm² in 30 wt% KOH - comparable to or lower than fumapem ion exchange membranes in their respective electrolytes
Operating medium: IONZERA uses liquid KOH electrolyte (low cost, non-proprietary) vs fumapem requires deionized water (PEM) or dilute KOH (AEM)
Catalyst requirement: AWE with IONZERA uses Ni-based catalysts (~$30/kW) vs PEM with fumapem requires Pt/Ir ($300–500/kW)
Membrane cost: IONZERA's mesh-free construction and India manufacturing provide lower per-m² pricing than fumapem ion exchange membranes

The Scale Argument for AWE + IONZERA

For projects above 10 MW, AWE with IONZERA becomes increasingly attractive compared to PEM with fumapem-type membranes. The elimination of precious metal catalysts, lower membrane costs, and proven long-term durability of alkaline systems make AWE the preferred technology for utility-scale green hydrogen. IONZERA enhances this advantage further with its 3x lower resistance versus conventional AWE separators.

No Noble Metal Catalysts

AWE with IONZERA uses low-cost Ni-based catalysts - no Pt or Ir supply chain risk

Lower System Cost

Porous separator + Ni catalysts delivers lower total electrolyser CapEx than ion exchange membrane systems

Proven AWE Scalability

Alkaline electrolysis technology scales to GW capacity without precious metal constraints

EXPLORE MORE

ComparisonsIONZERA vs Zirfon (Full Comparison)vsPEM vs AWE: When to Choose IONZERAvsEuropean vs Indian AWE MembranesvsIONZERA vs Celgard PP/PE SeparatorsvsCost-Performance Analysis vs Imports
Specs0.09-0.1 Ω·cm²Low Area Resistance Separator for 30wt% KOH350-410 μmThin-Film AWE Separator (350-410 μm)<0.5%Low Gas Crossover (<0.5% H₂ in O₂) Separator
ApplicationsEnergyIONZERA for Alkaline Water Electrolysis (AWE)EnergyIONZERA for Green Hydrogen Production
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