N-1125 Perfluorosulfonic Acid Proton Exchange Membrane for Vanadium Flow BatteryProduct Type: Vanadium Flow Battery Proton Exchange Membrane
commercial grade product
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LABORATORY PROCUREMENT SUPPORT
For model selection, application fit or configuration confirmation, contact our technical sales team.
E-MAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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This membrane exhibits controlled water uptake and acid capacity sensitive to ambient humidity. Mechanical integrity depends on proper storage to avoid delamination or embrittlement.
- Humidity Sensitivity: Maintain storage atmosphere below 50% relative humidity to prevent excessive water uptake that alters dimensional stability and proton conductivity.
- Mechanical Integrity Risk: Avoid sharp creases or compressive loading during handling to prevent micro-crack formation that reduces vanadium blocking performance.
- Chemical Compatibility: Confirm electrolyte compatibility prior to use, as certain vanadium species and additives can induce swelling or acid capacity drift outside the 1.00 +/- 0.05 meq/g specification.
This membrane must be hydrated prior to cell assembly to achieve target conductivity and water content. Proper alignment and clamping force are critical to prevent leakage and mechanical stress.
Required Equipment: Deionized water bath (60-80°C), Clean flat work surface
- Hydrate membrane
Immerse the membrane in deionized water at 60-80°C for 30 minutes to achieve equilibrium water uptake and acid capacity. - Align membrane in cell stack
Place the hydrated membrane between gaskets with the flow field pattern centered to avoid misalignment that causes local stress concentrations. - Apply clamping force
Tighten cell bolts in a crisscross sequence to a torque of 4-6 N·m to ensure uniform compression without exceeding the elastic modulus limit of 400 MPa. - Leak test assembly
Pressurize the electrolyte circuit to 0.5 bar and confirm no cross-leakage between half-cells before introducing vanadium electrolyte.
How does the 62 μm thickness of the N-1125 membrane affect vanadium ion crossover and durability in a VFB stack?
The 62 μm thickness provides a balance between reduced vanadium ion crossover and improved mechanical durability compared to thinner grades. The membrane achieves a tensile strength ≥30 MPa and elastic modulus ≥400 MPa, with specialty materials incorporated during tape casting to enhance vanadium blocking performance, as stated in the product specifications.
What are the conductivity and acid capacity requirements for this membrane to ensure stable VFB operation?
The N-1125 membrane requires in-plane conductivity ≥0.100 S/cm and normal conductivity ≥0.04 S/cm, with an acid capacity of 1.00 ± 0.05 meq/g. These parameters are critical for maintaining proton transport and stable electrochemical performance in vanadium flow battery applications, as specified in the technical data.
What handling and storage considerations are needed for the N-1125 membrane given its water uptake and content specifications?
The membrane has a water content of 5.0 ± 3.0% and water uptake of 50.0 ± 5.0%, indicating it must be stored in a controlled environment to prevent excessive moisture absorption or drying. Standard packaging ensures protection during transit, but for long-term storage, maintaining consistent humidity and temperature is recommended to preserve dimensional stability and performance.
The N-1125 perfluorosulfonic acid membrane (62 μm, 122 g/m²) offers enhanced mechanical durability with tensile strength ≥30 MPa and improved vanadium blocking, while maintaining high proton conductivity (≥0.100 S/cm) suitable for vanadium redox flow battery applications. However, its narrow water uptake tolerance (±5%) and standard 1m x 1m sheet size require careful hydration control and custom ordering for alternative dimensions.
Positive
- Enhanced Mechanical Durability: The 62 μm thickness with basis weight 122 g/m² provides tensile strength ≥30 MPa and elastic modulus ≥400 MPa, improving operational reliability over thinner membranes.
- High Proton Conductivity: In-plane conductivity ≥0.100 S/cm and normal conductivity ≥0.04 S/cm enable efficient ion transport, critical for VRFB performance.
Trade-offs
- Narrow Water Uptake Tolerance: Water uptake is specified at 50.0 ± 5.0%, requiring precise hydration control to avoid performance degradation from swelling or dehydration.
- Standard Sheet Size Limitation: Supplied as 1 m x 1 m sheets; custom dimensions require separate quotation, potentially extending lead time for non-standard geometries.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
