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FS-930 Cation Exchange Membrane
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FS-930 Cation Exchange Membrane

Price range: 35.00 € through 195.00 €

Fumatech FS-930 fluorinated cation exchange membrane, engineered for Vanadium Redox Flow Batteries with ultra-low area resistance and near-perfect proton selectivity in a slim 30 µm profile.

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About the product

The FS-930 is a 30 µm fluorinated, unreinforced cation exchange membrane from Fumatech, designed for Vanadium Redox Flow Batteries and other electrochemical processes requiring high oxidative stability under acidic conditions.

Its very low area resistance of <0.1 Ω·cm² (in 0.5 M H₂SO₄) and outstanding proton selectivity of >99% make it one of the highest-performing membranes in the range for minimising ohmic losses. At 30 µm it is thinner than the FS-940, translating directly to lower cell resistance and higher power density. Dimensional swelling in water is kept below 10%, and the burst test >3 bar confirms reliable mechanical integrity under operating pressure.

The membrane is delivered dry in H⁺ form on a PET backing foil. Dry assembly is recommended; if additional cleaning is needed, rinse in DI water or the application solution before use.’

Main application area: Vanadium redox flow batteries (VRFB)

 
To suit your specific research needs, we provide membranes in several formats:
  • Standard Sheets: 12.5 x 12.5 cm and 20 x 30 cm sheets for custom cutting.
  • Pre-Cut for Our Cells:
    • Cut w. alignment holes: For all our single cell test hardware.
    • Cut for X-Stack: Perfectly sized for our X-Stack electrolyser.
    • Cut for S-Stack: Designed for our S-Stack flow battery.
    • Cut with manifold holes: For our 3 and 4-compartment X-Cell.

For other dimensions or specific cut-outs, please make an inquiry. We are happy to provide custom solutions for your project.

Property Unit FS-930
Membrane type   Cation exchange membrane
Appearance / color   Transparent
Backing foil   PET
Reinforcement   None
Counter ion   H⁺ form
Delivery form   Dry
Thickness (dry) µm 25 – 35
Weight per unit area g m⁻² 55 – 75
Area resistance in 0.5 M H₂SO₄ Ω cm² < 0.1
Selectivity 0.1 / 0.5 mol/kg KCl at T = 25 °C % > 99
Dimensional swelling in H₂O at T = 25 °C % < 10
Young’s modulus at 23 °C / 50% r.h. MPa > 200
Tensile strength at 23 °C / 50% r.h. MPa > 25
Elongation at break at 23 °C / 50% r.h. % > 140
Burst test in water at T = 25 °C bar > 3

 

Copied from Fumatech’s offical datasheet

Technical Datasheet fumasep FS-930-onPET_v2-3

Video Guide for Removing Support Film

Support & Inquiry

Do you have specific questions or would you like help in selection and configuration of our product:

FS-930 Cation Exchange Membrane

You are very welcome to contact us in the form here. We are ready to support you in selecting the best solutions for your R&D.

Always include as much information as you can about your project, what type of chemistry you are planning to use, what is the purpose of the equipment  you are interested in. That will make it much easier for us to guide you towards the best solution for your project. 

Your question and Inquiry

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