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The Xion™ PEM-Dyneon-725-50 is a composite PEM that use the 3M Dyneon™ resin with an equivalent weight of 725. It is stable under acidic and neutral conditions. This membrane can be used in fuel cells, electrolyzers, electrodialysis, redox flow batteries, electrochemical compressors, and a wide variety of other devices. All Xion™ membranes have high selectivity, high chemical resistance, and durability. Image on the right side shows the chemical composition of the Dyneon resin.
The Xion™ PEM-Dyneon-725-50 is a reinforced composite ion exchange membrane that provides excellent mechanical strength and stability to a wide variety of ionomer chemistries.
XION Composite DYNEON Membranes are ultra-thin, highly conductive, and highly stable reinforced proton exchange membranes (PEM). The membrane is based on a perfluorosulfonic acid (PFSA) ionomer developed by 3M. The low equivalent weight and modification to the PFSA structure by 3M leads to the highest conductance material compared to traditional PFSA ionomers. A reinforcement layer is integrated into the structure of the membrane to provide enhanced mechanical properties. The enhanced mechanical properties allow Ultra-thin, Ultra-Strong, and Ultra-High-Performance free-standing membranes, i.e. providing higher ionic conductivity without sacrificing strength. XION Composite DYNEON Membranes come in two variations based on the equivalent weight (EW) of the ionomer. 725EW has higher ionic conductivity, but 800EW has greater stability.
|Equivalent Weight (EW)||Thickness (micrometers)||Tensile Strength at 50% RH and 23ºC (MPa)||Conductivity at 50% RH and 70ºC (mS/cm)|
*Membrane properties provided in the table is for reference only in order to show the comparison of different molecular weight Dyneon PFSA polymeric materials.
Current lead time to be expected is 1 - 2 weeks to ship.
|Modulus (MPa)||as high as 600 (measured at 50%RH, 23°C)|
|Tensile Strength - max. (MPa)||40 - 70 (measured at 50%RH, 23°C)|
|Water uptake (wt%)||< 50 (measured after 24h soak in 80°C water)|
|Swelling (%)||< 50 (measured after 24h soak in 80°C water)|
|Area Specific Resistance (ohm cm²)||as low as 0.01 (measured at 100%RH, 70°C)|
|Hydrogen Crossover (mA cm⁻²)||< 2 (measured at 100%RH, 70°C)|
|In-Plane Conductivity (mS/cm)||60 - 300 (measured at 100%RH, 70°C)|
|Water Permeability||as high as 10 (10⁻¹⁰ g s⁻¹ m⁻¹ Pa⁻¹) (ASTM E96)|
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