FS-990-PK - Electrolyser Membrane

FUMATECH BWT GmbH

Suitable for electrochemical processes like water electrolysis and redox-flow batteries
Delivered dry (non-activated)
Optionally pre-treated with 10 wt% H₂SO₄ at 70–100 °C
Can also be activated in-situ (for water electrolysis)

The FS-990-PK is a fluorinated cation-exchange membrane with PK reinforcement, featuring a thickness of 90 μm. It is designed for electrochemical processes that require high oxidative stability, such as water electrolysis and redox-flow batteries. This membrane offers low resistance, high mechanical stability, high selectivity, and excellent chemical and oxidative stability. It is delivered in a dry, non-activated form and can be pre-treated with a 10 wt% H₂SO₄ solution at 70–100 °C for at least 6 hours to achieve optimal performance. The membrane is trans-illuminant, with a yellow to beige color, and is delivered on a colorless rigid PET foil. It is important to handle the membrane with care to avoid punctures, creases, or scratches, as these can lead to leaks. The membranes performance is further enhanced by its high ion exchange capacity, low area resistance, and high conductivity in 0.5 M H₂SO₄. It is a reliable choice for applications requiring high efficiency and durability in electrochemical systems.

Use Cases

Water Electrolysis
Redox-Flow Batteries

Capabilities

High oxidative, chemical, and mechanical stability
Low area resistance (<0.25 Ω·cm² in 0.5 M H₂SO₄)
High proton conductivity (>60 mS/cm in 0.5 M H₂SO₄)
Reinforced with PK for enhanced durability
Delivered dry, can be pre-treated or activated in-situ
Trans-illuminant, yellow to beige membrane on PET backing

FUMATECH BWT GmbH

FUMATECH BWT GmbH specializes in membrane manufacturing for fuel cell technology and contributes to the hydrogen economy. The company focuses on sustainable water and power supply through advanced membrane technology. It is a long-standing player in multiple hydrogen markets.

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