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Home
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Electrolyser Membranes

FAAM-20 - Electrolyser Membrane

FUMATECH BWT GmbH

  • Application in alkaline electrolysis using liquid aqueous KOH
  • Self-activating in the cell after contact with aqueous caustic electrolyte
  • Thermal stability with no oxidation below 250 °C

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Description Vendor

The FAAM-20 is an anion-exchange membrane with a ternary ammonium group, designed for alkaline electrolysis using liquid aqueous KOH (6–12 M KOH). It is characterized by low resistance, high selectivity, and high stability in both acidic and caustic environments. The membrane is supplied in a dry state on a PET backing layer and requires careful handling to avoid damage. It is self-activating in the cell after contact with aqueous caustic electrolyte and can be pretreated with DI water or aqueous KOH. The membrane is suitable for applications requiring high performance in alkaline conditions. It is a non-reinforced membrane with a thickness of 20 μm and is identified by its membrane type and lot number. The membrane is also known for its thermal stability, with no oxidation occurring below 250°C, and its durability under highly alkaline conditions.

Use Cases

  • Alkaline electrolysis using liquid aqueous KOH (6 – 12 M KOH), preferentially at both, anode and cathode side

Capabilities

  • High selectivity
  • High stability in acidic and caustic environment
  • Self-activating in the cell after contact with aqueous caustic electrolyte
  • Expansion when subject to swelling process
  • Hydration level can be controlled by KOH concentration and temperature
FUMATECH BWT GmbH FUMATECH BWT GmbH, a subsidiary of the BWT Group headquartered in Bietigheim-Bissingen, Baden-Württemberg, Germany, specializes in innovative ion-exchange membrane technology serving two key electrochemical application fields: water treatment and energy-related applications including PEM fuel cells, water electrolysis, and redox-flow batteries. Drawing on over 25 years of experience in membrane manufacturing and membrane process technology—from synthesis of raw and auxiliary materials through membrane processing to technical application—FUMATECH has earned particularly high international reputation as a supplier of innovative membranes, the heart of the PEM fuel cell. The company's polymer electrolyte membranes for electrolysis and fuel cell applications, based on PFSA polymer and typically produced in reinforced versions, along with its FAA3 quaternary ammonium-based anion exchange membranes, support water electrolysis and photo-electrolysis research including studies on water-splitting hydrogen and oxygen evolution reactions. FUMATECH's parent company BWT provides complementary water treatment systems specifically designed for hydrogen production, delivering the pure water required for electrolysis processes with the highest hygiene safety and quality standards, positioning the combined FUMATECH-BWT offering as a comprehensive membrane and water treatment solution provider across the growing green hydrogen production and fuel cell technology market.
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